Error codes for Balu air conditioners are required in order to promptly identify the malfunction and contact a technician to fix it. It should be noted that in some cases the slightest delay becomes critical, so it is better to monitor the appearance of information on the display.

True, the errors of Balu air conditioners directly depend on the series. After all, the equipment differs in software, which means it informs a person about malfunctions in different ways. This means that you should consider all possible codes depending on the series.

Errors using the example of Ballu MFS2

Errors in air conditioners Balu MFS2 series:

• E1, E2, E3, E4 – Ballu air conditioner error, indicating that the temperature sensor has been broken or shorted;
• E6 indicates emergency activation of the external unit protection;
• E8 – Ballu air conditioner error requiring cleaning electrostatic filter;
• P4 – the compressor automatically turned off because an error appeared on the evaporator sensor, which occurs when the temperature threshold is exceeded;
• P5 - this error code for the Ballu air conditioner indicates when an error appears on the condenser sensor;
• P6 will indicate that the defrosting process has started automatically.

The number of codes shows how much information a person receives about the operation of his own equipment.

Accordingly, he can contact specialists at the right time.

Below is the most complete list of error codes and malfunctions found in this equipment in general.

Errors in Balu air conditioner series BSC, BR, BV

• E1, this air conditioner error code appears when the indoor air temperature sensor does not work properly;
• E2 – evaporator temperature sensor error;
• E5 indicates that an error occurred in the outdoor unit, which led to the automatic activation of the protection mode;
• E6 are errors in Balu air conditioners, indicating a malfunction of the fan motor in the indoor unit.

It is immediately clear that the last three episodes have a significantly smaller number of codes. On the one hand, this shows how stable the models are considered. On the other hand, the user receives less information, which often leads to difficult situations and additional diagnostics of cassette air conditioner models.

Air conditioner error codes – helpful information appears on the equipment screen. If you recognize them correctly, you will be able to find out exactly what fault needs to be fixed. Because of this, maintenance takes a minimum of time, which means the owner does not have to suffer from a lack of equipment.

Error codes are needed if your split system is broken, how to fix the problem, what the consumer needs to know, so that you are not cheated at the service center.

Error codes for split systems

Possible breakdowns of refrigeration equipment are determined by error codes; you don’t have to be a specialist to determine the cause of the breakdown by codes

The main directions for troubleshooting are simple... If the error code F-1, F-2, F-3, F-4, F-5, F-6, F-7, etc. is displayed, then the problem must be looked for in the temperature sensors and everything connected to them on the control board does not pass the signal, a break or short circuit.

If error code E-1, E-2, E-3, E-4, E-5, E-6... etc. is displayed. E-0, EL, in this case the air conditioner either starts and works for a while, or does not start at all, then we are looking for a solution to the problem with the operation of the split system in the power part: the reasons are different... from complete failure of the start signal to critical current characteristics for turning off the system .

As an example: the bearing of the indoor unit fan is pinched, the fan impeller rotates but at insufficient speed, the hall sensor or torque sensor does not send a signal to the control board, the split system displays error E 1…E-L after 1-5 minutes, the problem has been found.

Malfunctions and malfunctions of Toshiba air conditioners, we correct errors in the operation of your favorite split system

• Error codes 00, malfunctions related to the air conditioner power supply, critical malfunctions
• Table of faults and possible malfunctions, repair methods and troubleshooting of Toshiba air conditioners
• We repair Toshiba, tables of faults and error codes for professionals, errors from 14 to 22
• toshiba_mul"ti system errors with two or more internal ones... and much more, everything is on this page of the site.

Repairing Toshiba air conditioning systems is easy and simple if you have a service manual; we provide you with a free opportunity to become at least a little smarter.

Toshiba RAV series - air conditioner problems or error codes

Samsung air conditioner control panel

Air conditioner control panel Samsung, is not just a set of buttons that set certain specified functions of the air conditioner, but it is also a programmer that tasks the firmware of the split system board itself.

On the remote control, using certain sequential button presses, you can remove cockroaches and fix Samsung errors.

P/U Fig. 1.

But, if your Samsung still has trouble, - Samsung it's broken, don't rush to call service center for air conditioner repair, try re-flashing the air conditioner board and returning the Samsung split system settings to factory settings.

Samsung - air conditioner fault codes | Samsung board firmware

Sources: error codes of popular air conditioners Error Code Air Conditioner...

welcome to the page with direct links to sources of information about error codes, malfunctions of split systems of industrial and VRV air conditioning systems, the source sites also provide information about chiller systems - fan coils, fault codes and major breakdowns of climate control equipment. Air Conditioner Hardwired Remote Controller System Error Codes.

Mitsubishi, Fujitsu, Acson, Dantex, Mitsubishi-Heavy, Chofu, Akira, General Electric, General Climate, Gree, General-Fujitsu, Sanyo, Daikin, Toshiba, Electrolux, Kentatsu, Neoclima, Midea, McQuay, Panasonic, AUX, West, Whirlpool, Yamaha, Euronord, Pioneer, Mitsubishi-Electric, Hyundai, Dantex classik Toyo, Chigo, DAX, RODA, Renova, Quattroclima, Lessar, Supra, Saturn, Ferroli, Hualing, Tadiran, Daewoo, Airwell, York...

If you didn't find your air conditioner in this long list, don't worry, click on the source link... it's all there.

Error code air conditioning | Error codes, originals pdf file

Damaged thermistor

1) Check the transmission wire. 2) Coordinate with another remote controller. If "EO" is still indicated, replace the internal controller board. If another checkered code appears. Replace the original remote controller. Error codes. Mitsubishi-Electric

P1 Room temperature thermistor abnormality (RT1) 1) Poor thermistor contact 2) Damaged thermistor 1) Check the thermistor. 2) Measure the resistance of the thermistor. The normal resistance should be as follows. 32°F-15k | 86°F ..... 4.3k 50°F...... 9.6k 104°F..... 3.0k 68°F...... 6.3k, If the resistance is normal, replace the internal tip dispatchers. P2 Internal coil thermistor (RT2) abnormality P3 Signal transmission error (The remote controller does not respond to the internal controller signal.) 1) Poor contact of the transmission wire 2) Signal transmit/receive circuit is incorrect. 3) Incorrect operation due to noise wave emitted by other devices

1) Check the transmission wire. 2) Coordinate with another remote controller. If "P3" is still indicated, replace the inner board. If another checkered code appears, replace the original remote controller. 3) Short circuit between and out of CN40 and connect CN40 to the following units. Second unit in double monitoring Second and third units in triple monitoring Sub units in group monitoring P4 Leakage sensor abnormality 1) Bad transmission contact wires

Air conditioners Mitsubishi-Electric | Split system malfunctions, error codes

They break much more often

Frequent breakdowns of budget series air conditioners are due to the fact that split systems of a lower price category break down much more often, since almost all components, parts, and cooler mechanisms are minimized in price.

Error codes for groups of air conditioners - DAX, JAX, Pioneer, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu, Renova - with interchangeable printed circuit boards of the same name.

Whole Group Error Codes budget air conditioners, - DAX, JAX, Pioneer, Hansa, Saturn, Rolsen, Yamatsu, Vitek, Daihatsu, Renova, - with interchangeable printed circuit boards of the same name. Firmware for cooling device boards of these brands by default.

E1 or EL - pay close attention to this malfunction in the operation of the air conditioner, it is usually not related to the quality of the cooler, it is an external system error associated with poor-quality voltage in the power supply network.

Error display code | AUX, DAX, JAX, Pioneer, Hansa, Saturn, Vitek, Rolsen, Yamatsu, Daihatsu

Breakdowns of Mitsubishi-Heavy split systems

Display readings on the Mitsubishi remote control.

EA error code Why doesn't Mitsubishi work? Incorrect installation of the indoor/outdoor unit. exceeds the number of internal switches, connection block, break. Check temperature and pressure sensors...

Error code Eb Split system malfunction. Incorrect installation of the indoor/outdoor unit. (Incorrect installation, check correct connection) Check temperature and pressure sensors...

EU error code Problem. Timed start, delayed start. Check temperature and pressure sensors...

Error code E6 Malfunction. Internal / external, - control board malfunction (signal receiver does not work). Closed when checking

Error code E7 Mitsubishi air conditioner malfunction. Indoor/outdoor, - incorrect signal generation (not correct connection, open circuit, short circuit). Closed when checking

Error code E8 Mitsubishi-Heavy air conditioner malfunction. Internal / external, - control board malfunction (signal receiver does not work).

Mitsubishi-Heavy, we eliminate cooling circuit malfunctions.

Troubleshooting the cooling circuit.

Check temperature and pressure sensors...

Error code E9 Air conditioner malfunction. Internal / external, - incorrect signal formation (incorrect connection, open circuit, short circuit). Check temperature and pressure sensors...

Malfunctions of Mitsubishi-Heavy cooling systems, service manual

Search malfunctions and breakdowns of split systems McQuay/Acson, it is necessary to start with the common causes of equipment breakdowns and failures. Common causes include electrical malfunctions and refrigeration circuit malfunctions.

Name of McQuay/Acson equipment, their analogues and modifications.
McQuay... McQuay and Acson, - possible malfunctions and errors

Carrier air conditioner is broken

If your Carrier air conditioner has broken down, then something extraordinary and beyond reason has really happened.

Carrier are so reliable and durable that it is extremely difficult to break this device even with a strong desire. But, anything can happen... meteorites fall... Carrier split system malfunctions

The main malfunction of LG air conditioners...

As a rule, the main malfunction of LG air conditioners is insufficient mains voltage and power consumption. Chubais are spoiling LG air conditioners. How to fix the breakdown? How to determine a malfunction using blinking indicators. What do these blinkings mean?

You can see how many times this or that indicator light blinked based on the figure above. How to find an error using indicators - LEDs of the indoor unit of air conditioners.

You can see how many times this or that indicator light blinked based on the figure above.

• Error code = 21, as an example in the figure.
• You may have a different error code, but the analogy is clear.
• Error codes for both ordinary split systems and multi-conditioners
• LG with two or more indoor units, examples of error codes taken from the indoor unit of a multi-split system, as an example:

LG - air conditioner error code tables | How to determine the malfunction... LG error codes

Haier air conditioners also break down, as do all household appliances; you can easily determine fault codes and possible errors in split systems of this brand from the fault table given on the page of our website.

The operation algorithm of Haier Electric Corporation air conditioners is so simple that even a novice amateur repairman can figure it out.

If all renovation work carried out consistently, the result simply must be positive.

Haier Electric Corporation error codes

Improper maintenance of the Haier air conditioner is the main malfunction. Crooked hands are the reason why Haier split systems fail.

• Crooked hands are the reason why Haier split systems fail.
• Haier Electric Corporation. Models of the HSU-HVA R2-4 series, air conditioner error codes.
• Model HSU-09/12HVA103/R2 (BD) or their analogues
• Model HDU-24CA03/M(R1) HDU-28CA03/M(R1) HDU-36CA03/M(R1) HDU-42CA03/M(R1)

Haier fault codes | Model HSU-09/12HVA103/R2 or their equivalents

Panasonic, air conditioner repair. We look for and correct system errors. Error codes and malfunctions of Panasonic air conditioners (Panasonic).

Panasonic, how to resolve an unexpected problem

To be fair, we note that Panasonic air conditioners also break down.

Breakdowns and malfunctions in split systems under the well-known multi-national brand National Panasonic, as well as the main malfunctions of split systems, are presented in our article on the repair of coolers of this type.

If your Panasonic blinked like Christmas tree and does not want to execute commands given from the air conditioner control panel, then this article will help you figure out and fix the unexpected problem. Everything is being repaired! Even National Panasonic split systems. To be fair, we note that Panasonic air conditioners also break down.

We look for and correct system errors. Panasonic error codes.

• Panasonic, how to find the error code, it is not difficult to determine if the air conditioner is broken, you need to carefully observe the display and look at the Panasonic error map, there is a picture.

In order to order repair of a Panasonic air conditioner from us, just call our operator and leave a request. ... repair of Panasonic air conditioners. Name of service. Price, rub

Panasonic, air conditioner repair | We look for and correct system errors

Gree, like an air conditioner, is functionally simple, so there are not many error codes. The disadvantages of the simplicity of Gree air conditioners are weak varistors on the control board and insufficient smoothing of currents during voltage surges. A trifle, but this must be kept in mind when repairing air conditioners Gree and their analogues.

Self-diagnosis of Gree air conditioners

The internal self-diagnosis of Gree air conditioners is unified and almost identical in error positions to inexpensive air conditioners, such as Pioneer, General Climate, Lessar and others.

Everything is similar and almost everything can be repaired: you just need to have a little patience and confidence in the success of the repair company. Everything will be fine...

Gree: error and fault codes | Simple repair

Daikin error codes... Malfunctions of these nice Daikin Daichi air conditioners. Air conditioner fault detection table Daikin. Full image size. 2500*2000 link.

Error codes, press the Daikin PU buttons.

Which buttons should I press and when? Schematic version. The split system error code will appear on the screen. It’s very convenient for self-testing. And then there are times when a repair “master” comes and... let’s increase the price for air conditioner repair from the client’s eyes. And there the problem is a cheap one. As an example, wipe the temperature sensor of the indoor unit with a cloth, or simply clean the filter...

Independent search for errors and faults Daikin air conditioners. Pre-repair diagnostics of Daikin split systems.

Daikin error codes | Daikin air conditioner malfunctions

Fujitsu, General-Fujitsu fault codes | Which buttons to press and when? Repair

We look at the book and see... what we need. The Failure Paradox Fujitsu, General-Fujitsu. Fault codes for split systems Fujitsu, General-Fujitsu. Fujitsu, General-Fujitsu, Fuji. Air conditioning fault codes, system error monitoring or System Controller Error Fujitsu. When EE: EE is displayed on the Fujitsu remote control, press the power saving and mode change buttons at the same time for more than 3 seconds. Error codes will be shown on the display.(1) Stop the air conditioner. (2) Press the Master control button and the fan control button simultaneously for 2 seconds or more to start the test run (3) Press the Start/Stop button to stop the test run Error code = 01 Malfunction = Communication error (indoor unit to outdoor unit) Error code = 02 Malfunction = room temperature sensor is open, open Error code = 03 Malfunction = Indoor unit temperature sensor, short circuit Error code = 04 Malfunction = Air conditioner indoor unit temperature sensor is open. Error code = 05 Malfunction = Indoor unit temperature sensor is faulty. Sensor resistance is 10 ohms. Error Code = 06 Fault = Outdoor Heat Exchanger Temperature Sensor Open Error Code = 07 Fault = Outdoor Heat Exchanger Temperature Sensor Short Circuit Error Code = 08 Fault = Power to Connect to Error Source Error Code = 09 Fault = Float Switch Operates Error Code = 0A Fault = Outdoor Unit Temperature Sensor open or open Error code = 0b Malfunction = Temperature sensor of the outdoor unit of the split system - short circuit Composite picture of the service manual Fujitsu, General-Fujitsu. Original. Malfunction = no signal from Fujitsu, not normal Error code = 14 Malfunction = no signal from room sensor 2. Fujitsu outdoor LED unit. When the outside temperature drops, there is not enough pressure in the system. Add freon. error: heat and cooling (REVERSE CYCLE) incorrect Fujitsu connection.

With Gree air conditioners and split systems, repairs are easier than with hi-fay series models.

Self-diagnosis of Gree air conditioners

What explains this, the average person may ask?

The explanation is simple Gree: codes. On Gree air conditioners and split systems, there are not many protection system sensors. Those. everything is simplified.

• Internal self-diagnosis of Gree air conditioners unified and almost identical in error positions to inexpensive air conditioners, such as Pioneer, General Climate, Lessar and others.

You will laugh, but for example, the catalog of Supra air conditioners did not even change the name of the outdoor unit, perhaps you do not have enough skills in Photoshop, perhaps they did not consider it necessary.

In a word, how were Supra air conditioners certified in Russia? It's a mystery to me. Supra Catalog!! In fact. Heh...

Self-diagnosis of Gree air conditioners is, -

• high pressure protection,
• protected from freezing of the evaporator,
• Compressor overload protection,
• Errors in switching the air conditioner during installation, I confuse the wires,
• And errors in the evaporator and condenser temperature sensors.

That's it, you'll agree, not much. Gree, like an air conditioner, is functionally simple, so there are not many error codes.
There are disadvantages of this simplification - these are weak varistors of the control board, insufficient smoothing

Error codes table, continued.

currents during voltage surges. A trifle, but this must be kept in mind when repairing air conditioners Gree and their analogues.

Example: country house country house. When owners leave their dacha, they usually turn off the power to the building using a common switch.
Those. They put it out and that’s it, they calmed down. We arrived... We turned on the lights with the same switch, and the air conditioner, refrigerator, or other Appliances does not work. Why? The answer is simple.

When the power is turned on, current and voltage surges occur with the load.

Varistors that smooth out voltage surges cannot cope with the current load and burn out, burn well with smoke and soot, in the absence of a protective shell, usually together with the fuse of the control board of the internal unit of the split system.

There are “specialists” who use wire when burning a fuse. Is it possible to do this? It’s possible, but then, in addition to the varistors, the control board and the fan motor of the indoor unit will burn out, and... it rushes all the way to the compressor windings of the outdoor unit of the air conditioner.

Fireworks at the dacha. — Expensive repairs.

Troubleshooting and breakdown of the air conditioner, Gree: as usual, we start with codes...

- refrigeration circuit malfunctions,

- malfunction of the electrical part, electrical system. power supply and air conditioner control.
Source:

Error map, mapping. Primary diagnostics of the system.

GREE Air conditioners for semi-industrial, industrial use - error codes.

Error code = E1
Compressor, pressure surges (sound signal).

Error code = E2
Coil faulty

Error code = E3
Low pressure air conditioning compressor triggered (beep sound)

Error code = F0
Faulty room temperature sensor.

Error code = F1
Incorrect sensor resistance.

Error code = F2

• The temperature sensor of the outdoor unit of the air conditioner has tripped.

Error code = F3
The temperature sensor circuit is open.

GREE Split air conditioners Error code...

The cause of the malfunction is the refrigerant system with a high degree of protection, pressure.
code = E1

The Gree LED flashes 1 time.
Indicator - cooling =
Heating indicator =

The cause of the Gree malfunction is frost protection.
code = E2

Air conditioner start LED = LED flashes 2 times.
Indicator - cooling =
Heating indicator =

The cause of the malfunction is the high-temperature protection exhaust compressor.
code = E4

Air conditioner start LED = flashes 4 times
Indicator - cooling =
Heating indicator =

Cause of malfunction - AC overcurrent protection
code = E5

Air conditioner start LED = LED flashes 5 times
Indicator - cooling =
Heating indicator =

The cause of the malfunction is a communication failure between the indoor unit of the air conditioner and the outdoor unit of the split system.
code = E6

Gree air conditioner start LED = flashes 6 times
Indicator - cooling =
Heating indicator =

Cause of malfunction - Anti-high temperature protection
code = E8

Air conditioner start LED = flashes 8 times
Indicator - cooling =
Heating indicator =

Cause of malfunction - No feedback of internal fan motor
code = H6

Air conditioner start LED = flashes 11 times
Indicator - cooling =
Heating indicator =

Cause of malfunction - Jumper cap faulty protection
code = C5

Air conditioner start LED = flashes 15 times
Indicator - cooling =
Heating indicator =

Cause of malfunction - Ambient sensor closed, open, no contact or short circuit
code = F1

Indicator, - cooling = LED flashes 1 time
Heating indicator =

Name of malfunction or sensor failure = Indoor tube open, no contact or short circuit
code = F2

Air conditioner start LED =
Indicator, - cooling = LED flashes 2 times
Heating indicator =

The cause of the malfunction is outdoor sensor ambient open, no contact or short circuit
code = F3

Air conditioner start LED =
Indicator, - cooling = LED flashes 3 times
Heating indicator =

Cause of malfunction - Outer tube sensor is open, no contact or short circuit
code = F4

Air conditioner start LED =
Indicator - cooling = flashes 4 times
Heating indicator =

Name = malfunction or breakdown of the exhaust sensor is open, no contact or short circuit
code = F5

Air conditioner start LED =
Indicator, - cooling = LED flashes 5 times
Heating indicator =

Cause of malfunction, - Beyond the maximum load / frequency reduction
code = F6

Air conditioner start LED =
Indicator - cooling = Blink 6 times
Heating indicator =

Cause of malfunction - For current/frequency output limitation
code = F8

Air conditioner start LED =
Indicator - cooling = flashes 8 times
Heating indicator =

Cause of malfunction - High exhaust gas temperature limit / frequency reduction
code = F9

Air conditioner start LED =
Indicator - cooling flash = 9 times
Heating indicator =

Cause of malfunction - Overvoltage protection for RU
code = PH

Air conditioner start LED =
Indicator - cooling = flashes 11 times
Heating indicator =

The cause of the malfunction is AC circuit fault detection
code = U5

Air conditioner start LED =
Indicator - cooling = flashes 13 times
Heating indicator =

Cause of malfunction - Compressor reverse protection
code = U4

Air conditioner start LED =
Indicator - cooling = flashes 14 times
Heating indicator =

Cause of malfunction - For compressor phase current protection
code = P5

Air conditioner start LED =
Indicator - cooling = flashes 15 times
Heating indicator =

The cause of the malfunction is the input malfunction of the sensor tube
code = b5

Air conditioner start LED =
Indicator - cooling = flashes 19 times
Heating indicator =

Cause of malfunction: - Open DC fan motor is faulty.
code = L3

Air conditioner start LED =
Indicator - cooling = flashes 21 times
Heating indicator =

Cause of malfunction - Output fault or tube sensor failure
code = b7

Air conditioner start LED =
Indicator - cooling = flash 22 times
Heating indicator =

Cause of malfunction - Compressor overload sensor is faulty.
code = FE

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

Cause of malfunction - Defrosting
code = h3

Air conditioner start LED =
Indicator - cooling =
Heating indicator = LED flashes 1 time

The cause of the malfunction is static dust protection cleaning
code = H2

Air conditioner start LED =
Indicator - cooling =
Heating indicator = LED flashes 2 times

Cause of malfunction - Compressor overload protection
code = H3

Air conditioner start LED =
Indicator - cooling =
Heating indicator = LED flashes 3 times

Cause of malfunction - System abnormal protection
code = H4

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 4 times

Cause of malfunction - IPM protection
code = H5

Air conditioner start LED =
Indicator - cooling =
Heating indicator = LED flashes 5 times

Cause of malfunction - PFC protection
code = HC

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 6 times

Cause of malfunction - Compressor loss of protection step
code = H7

Air conditioner start LED =
Indicator - cooling =
Heating indicator flashes = 7 times

Cause of malfunction - Heating against high frequencies temperature drop
code = HO

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 10 times

Cause of malfunction - Startup failure
code = Lc

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 11 times

Cause of malfunction - Phase loss protection compressor
code = U2

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 12 times

Cause of malfunction - Phase current compressor detection circuit faulty
code = U1

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 13 times

Cause of malfunction - Compressor demagnetization protection
code = HE

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 14 times

Cause of malfunction - Loading EEPROM is faulty.
code = EE

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 15 times

The cause of the malfunction is a communication failure between the motherboard and the board driver
code = P6

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 16 times

The cause of the malfunction is a faulty charging capacitor
code = PU

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 17 times

The cause of the malfunction is that the sensor circuit IPM is faulty.
code = P7

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 18 times

The cause of the malfunction is IPM high-temperature protection
code = P8

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 19 times

Cause of malfunction - PN protection voltage drop
code = U3

Air conditioner start LED =
Indicator - cooling = flashes 20 times
Heating indicator =

The cause of the malfunction is low PN voltage protection
code = PL

Air conditioner start LED =
Indicator - cooling =
Heat indicator = flashes 21 times

The cause of the malfunction is the current detection circuit is faulty or the current sensor is faulty or broken.
code = Rs

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

Cause of malfunction - Compressor phase failure protection
code = Ld

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

Cause of malfunction - Compressor or rotary protection blocked
code = LE

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

Cause of malfunction - IPM exceeds temperature limit / frequency decrease
code = EU

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

Cause of malfunction - 4-way reversal valve abnormal
code = U7

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

The cause of the malfunction is disconnection of the exhaust gas temperature sensor
code = U8

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

Cause of fault, - AC zero voltage detection error
code = U9

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

The cause of the malfunction is the frequency temperature difference behind the tubes
code = FA

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

Cause of malfunction - Anti-freeze limit / frequency reduction
code = FH

Air conditioner start LED =
Indicator - cooling =
Heating indicator =

Models: air conditioner repair brands KFR-32GW/BP, KFR-45LW/D, KFR-3502GW/BP, KFR-2501GW, KFR-45LW, KFR-3301GW, KFR-3201GWCPU, KFR-2608GW/BP and other KFR series,PDF fail.

MDV air conditioners have a self-diagnosis system. This means that if the air conditioner malfunctions, it will generate an error code. The error code of the MDV air conditioner is quite easy to identify the problem.
This page provides error codes for various types of MDV equipment:

ERROR CODES FOR MDV HOUSEHOLD SPLIT SYSTEMS
AURORA Series (MDSA)

Display	Error value
E0
E1	EEPROM read error, indoor unit
EZ	No indoor unit fan control
E4	Error on temperature sensor T1 (Troom)
E5	Error on sensor T2 (Boiling)
EU	Refrigerant leak
F1	Error on sensor T4 (Outdoor block, External)
F2	Error on the TK sensor (Outdoor block, Tcondensation)
F3	Error on sensor T5 (Outdoor block, Discharge)
F4	EEPROM reading error, outdoor unit
F5	No outdoor unit fan control
P0	IPM malfunction or overcurrent
P1	Supply voltage is too low or too high
P2	Compressor overheating
P4	Inverter module error

FAIRWIND Series (MDSF)

LED Operation	LED Timer	Display	Error code meaning
Flashes 1 time	Off	E1
Flashes 2 times	Off	E2	Error monitoring signal transition through 0
Flashes 3 times	Off	EZ
Flashes 5 times	Off	E5	Indoor unit thermistor T1 error (air sensor)
Flashes 6 times	Off	E6	Indoor unit thermistor T2 error (pipe sensor)
Flashes 7 times	Off	E7	Outdoor unit thermistor error TZ (only for 24 and 28 kBTU)
Flashes 2 times	Glows	EU	Refrigerant leak detected
Flashes 8 times	Off	E8	reserve
Flashes 9 times	Off	E9	Interunit communication error (24 and 28 kBTU only)

Note: Depending on the air conditioner model, the error code may be displayed on the digital display or LED mode display.

ERROR CODES FOR MDV MULTI-SPLIT SYSTEMS
Outdoor units of the Free Match series (MD*O-**HFN1)

Display	Error value
E0	EEPROM checksum reading error
E2	Interconnect error
EZ	Communication error "control board - inverter board"
E4	Error in outdoor unit temperature sensors
E5
E8	Outdoor unit fan speed control error
F1	Indoor unit A thermistor error
F2	Indoor unit B thermistor error
F3	Indoor unit C error on thermistors
F4	Indoor unit D thermistor error
F5	Indoor unit E thermistor error
P1	Protection according to P high (MD40-28HFN1, MD40-36HFN1, MD50-42HFN1)
P2	Protection according to P low (MD40-28HFN1, MD40-36HFN1, MD50-42HFN1)
RZ	Compressor current protection
P4	Protected for high discharge temperature
P5	Compressor overheating
P6	Inverter module failure
LP

Note: all error codes are automatically erased 30 seconds after the error is eliminated/disappeared, except for E2/EZ.

Indoor units of wall, duct and cassette types

Designations:
O-glows;
X-off;

Error code	Description of the malfunction	LED Timer	LED Operation (flashes, quantity once)
E0	EEPROM checksum reading error	X	1
E1	Interconnect error	X	2
EZ	Indoor unit fan speed control error	X	4
E4		X	5
E5		X	6
HER	Condensate level sensor error (sensor or level)	X	8
F0		ABOUT	1
F1		ABOUT	2
F2		ABOUT	3
F3		ABOUT	4
F4		ABOUT	5
F5		ABOUT	6
F6		ABOUT	7
F7	Reserve	ABOUT	8
F8	Reserve	ABOUT	9
F9	Reserve	ABOUT	10
P0		III	1
P1	Too low or high voltage	III	2
RZ	Outside air temperature too low	III	4
P4	Compressor error (see outdoor unit)	III	5
P5	Regime conflict	III	6
P6	Low pressure protection	III	7
EU	Refrigerant leak detected	X	7
E2	Synchronization error	X	3
P2	Compressor overheating	III	3

Console type indoor units

Designations:
O-glows;
X-off;
/// - blinks at a frequency of 2 Hz.

Description of the malfunction	Timer Lamp	Operation Lamp (flashes, number of times)
EEPROM checksum reading error	X	1
Interconnect error	X	2
Indoor unit fan speed control error	X	4
Thermistor T1 error (indoor unit)	X	5
Thermistor T2 error (indoor unit)	X	6
Overcurrent (not all models)	ABOUT	1
Thermistor T4 error (outdoor unit)	ABOUT	2
Thermistor error TZ (outdoor unit)	ABOUT	3
Thermistor T5 error (outdoor unit)	ABOUT	4
Error reading EEPROM checksum (outdoor unit), not all models	ABOUT	5
Fan speed control error (outdoor unit)	ABOUT	6
Thermistor T2B error (indoor unit)	ABOUT	7
Malfunction of the inverter module (see codes for the outdoor unit)	III	1
Voltage too low or high	III	2
Outside air temperature too low	III	4
Compressor error (see outdoor unit)	III	5
Regime conflict	III	6
Low pressure protection	III	7

ERROR CODES FOR SEMI-INDUSTRIAL MDV SPLIT SYSTEMS
Outdoor units

Contents of the error	LED 1	LED 2	LED 3
Phase rotation	III	X	X
Lack of phase (A, B)	III	X	X
Lack of phase (C)	X	X	X
Low pressure protection	III	III	X
Overcurrent	X	X	III
Board fault	III	X	III
Open or short circuit of the TK sensor circuit	X	III	III
T4 sensor circuit open or short circuited	X	III	X
Capacitor overheat protection	III	III	III

Note: LEDs 1, 2, 3 blinking slowly means the system is in standby mode.

Indoor units of floor-ceiling (MDUE), duct (MDTB), full-size cassette (MDCD), cassette compact (MDCA3) types.

Protection or malfunction	moning	timer	defrosting	alarm	error code
Air T sensor	X	III	X	X	E2
Refrigerant T sensor	III	X	X	X	EZ
Condensation T sensor (for 18 and 24 kBTU)	X	X	III	X	E4
EEPROM read error	III	III	X	X	E7
Exceeding the level of condensate in the pan	X	X	X	III	E8
Refrigerant leak (if function)	III	X	X	III	E.C.

Column type indoor unit (MDFM)

Error code	Protection or malfunction
P4	Evaporator T protection
P5	High condensation protection
P9	Cold air protection
E1	Air T sensor
E2	Refrigerant T sensor
EZ	Condensation sensor T
E6	Outdoor unit malfunction
H.S.	Defrost mode works
P0	There is no connection between the indoor unit control board and the display (J2, S4)

Midea Series LCAC DC Inverter
Internal cassette 4-flow models

Error	running	timer	defrost	alarm	Description
E1		Led2 Quik Flash			There is no connection between the indoor and outdoor units
E2	Led 1 Quik Flash				Faulty - air temperature sensor is shorted or torn
EZ	Led 1 Quik Flash				The evaporator temperature sensor is faulty (connector CN12 on the board)
E4	Led 1 Quik Flash				The temperature sensor at the outlet of the evaporator is faulty (connector CN7 on the board)
HER				Led 4 Quik Flash	Condensate drain pan overflow error
E0			Led 3 Quik Flash		Air conditioner model mismatch
E7	Led 1 Quik Flash				The PROM is faulty, the board (chip) or firmware needs to be replaced
Ed				Led 4 Quik Flash	The external unit is faulty, see errors for it

Aeronik error codes

Aeronik air conditioner error codes

E1 – compressor discharge pressure has increased;
E2 – freezing of the heat exchanger of the indoor unit has occurred;
E3 – compressor discharge pressure has decreased;
E4 – the temperature of the discharge pipeline has increased;
E5 – activation of the compressor current relay;
F0 – there is a malfunction in the internal air temperature sensor
room, in the heat exchanger in the indoor unit or ambient air in the outdoor unit;
F0 -- There may also be a freon leak in the indoor unit.
E6 – there are faults in switching;
E8 – the motor of the indoor unit is overloaded;
F1 – there is a malfunction in the temperature sensor in the heat exchanger;
F4 – a malfunction has occurred in the temperature sensor of the discharge
air room.
H1- is not an error. The air conditioner has switched to auto defrost mode.

Airwell Error Codes

Error codes for Airwell air conditioners

Akvilon error codes

Error codes for Akvilon air conditioners

Possible mistakes	Monitor mode 1 （indicator on display）	Monitor mode 2 （wire controller）	Order of appearance	Actions
Communication error				Shutdown
Drainage system error	The indicator lights up 4 times/8sec			Shutdown
Phase failure, phase loss or low voltage error	The indicator lights up 6 times/8sec			Shutdown
	The indicator lights up 1 time/8sec			Shutdown
Indoor unit sensor(TE) abnormality	The indicator lights up 2 times/8sec			Shutdown
	The indicator lights up 2 times/1sec			Continue working
Internal overheat protection				Shutdown
Defrosting (not error)	The operation indicator lights up			Continue working

Fault codes for power supply 380-415W

Suitable for 36000~60000BTU units, with 380-415W 3N, 50Hz power supply

Possible mistakes	Display mode1 （panel indicator display）	Display mode 2 (indicator errors on the control panel）	Display mode3 (controller wires）	Order of appearance	Actions
Communication error	Lights up 5 times and goes out after 2 seconds				Shutdown
Communication error with wire controller					Shutdown
Drainage error	Lights up 4 times and goes out after 2 seconds				Shutdown
External protection (Phase loss)	Lights up 6 times and goes out after 2 seconds				Shutdown
External protection (overheating discharge)		Lights up 10 times and goes out after 2 seconds			Shutdown
Defence from high pressure					Shutdown
Low pressure protection	Lights up 9 times and goes out after 2 seconds				Shutdown
Room temperature sensor abnormality (Air temperature)	Lights up once and goes out after 2 seconds				Shutdown
Indoor unit (TE) sensor abnormality	Lights up 3 times and goes out after 2 seconds				Shutdown
Outdoor unit sensor abnormality (TW)	Lights up 2 times and goes out after 2 seconds	Lights up 2 times and goes out after 2 seconds			Continue working
External condensate temperature sensor(TL) anomaly		Lights up 7 times and goes out after 2 seconds			Continue working
Temperature sensor(TP) discharge abnormality		Lights up 8 times and goes out after 2 seconds			Continue working

Ballu error codes

Error codes for Ballu air conditioners

E1 – short circuit or break of the sensor responsible for the indoor unit.
E2 - short circuit or break in the sensor responsible for the temperature of the capacitor.
E3 - short circuit or break in the sensor responsible for the evaporator temperature.
E4 - short circuit or break in the sensor responsible for the indoor unit.
E6 – the protection of the external unit has tripped.
E8 – electrostatic filter is clogged.
P4 – an error occurred in the operation of the evaporator sensor due to high or
low temperature.
P5 – an error occurred in the operation of the capacitor sensor due to high or
low temperature.
P6 – defrosting mode has been activated or there has been a delay in operation
heat exchanger.

Carrier Error Codes

Carrier air conditioner error codes

2 – there is a malfunction of the temperature sensor in the room;
3 – there is a malfunction of the temperature sensor in the internal
heat exchanger;
6 – there are malfunctions in the operation of the reversing valve in the outdoor unit;
8 – a malfunction has occurred in the fan motor located in
indoor unit;
9 – no electrical power to the indoor unit;
11 – there are malfunctions in the drainage pump;
12 – a software failure occurred in the indoor unit;
13 – an error occurred in the configuration;
14 – signal lost in central system management;
15 – there is a malfunction of the temperature sensor in the internal
heat exchanger;
18 – there are malfunctions in the control of the outdoor unit;
20 – block position is not recognized;
21 – there is a malfunction of the current sensor located in the outdoor unit;
22 – there is a malfunction of the temperature sensor in the external
heat exchanger;
23 – a malfunction of the discharge temperature sensor has occurred;
24 – there are malfunctions in the operation of the fan in the outdoor unit;
26 – other malfunctions in the outdoor unit;
27 – the compressor located in the outdoor unit is blocked;
28 – the discharge temperature is unacceptable;
29 – a malfunction has occurred in the compressor, located in the outdoor unit;
31 – there was an increase in pressure in the circuit of the outdoor unit.

Cooper&Hunter error codes

Error codes for Cooper&Hunter air conditioners (Cooper&Hunter)

Code E0 - exceeding the lower starting voltage threshold. Starting the frequency controller.
Code E1 - excess pressure. Starting the compressor protection system.
Code E2 - threat of freezing of the indoor unit. Starting the protection system.
Code E3 - lowering the permissible pressure threshold. Starting the compressor protection system.
Code E4 - excess permissible temperature discharge tube. Starting the protection system.
Code E5 - compressor overload. Starting the protection system.
Code E6 - error in connection/operation of the signal or power cable.
Code E7 - established modes split systems are not the same.
Code E8 - evaporator overheating. Starting the protection system.
Code E9 - startup of the cold air supply protection system in thermal mode.
Code F0 - failure of the temperature rise sensor.
Code F1 - failure of the evaporator temperature sensor.
Code F2 - failure of the condenser temperature sensor.
Code F3 - failure of the air temperature sensor in the system.
Code F4 - failure of the blower temperature sensor.
Code F5 - failure of the compressor discharge tube sensor.
Code F6 - condenser overheating.
Code F7 - there is insufficient lubrication in the compressor crankcase.
Code F8 - compressor overloaded. Starting the protection system.
Code F9 - excess maximum temperature condenser due to a decrease in fan speed during cooling. The compressor is overloaded.
Code FF - there is no power supply to one of the phases / error in the operation of the phase monitor.
Code FA - condenser/evaporator overheating. Starting the protection system.
Code FH - danger of evaporator freezing. Starting the protection system.
Code H0 - overheat protection activated.
Code H1 - condenser defrost mode is activated.
Code H2 - error in the operation of the electrostatic filter. Starting the protection system.
Code H3 - exceeding the permissible compressor temperature. Starting the protection system.
Code H4 - error in the system.
Code H5 - start of the IPM inverter unit protection system.
Code H6 - sensor malfunction. Lost return signal from fan motor.
Code H7 - compressor is faulty.
Code H8 - drainage system is full. Start protection.
Code H9 - malfunction of the electric heater of the indoor unit.

Daikin error codes

Error codes for Daikin air conditioners

A0 – activation of the protective device.
A1 – problems with the printed circuit board.
A2 – fan motor is blocked.
A3 – abnormal level of drainage.
A4 – problems with the heat exchanger.
A5 – abnormal temperature in the heat exchanger.
A6 – fan motor overloaded.
A7 – the blind drive is faulty.
A8 – current overload of the device.
A9 – expansion valve is faulty.
AA – engine overheated.
AH – air filter contamination.
AC – idle speed detected.
AJ – insufficient performance.
AE – poor water supply.
AF – humidifier defect detected.
C0 – sensor is faulty.
C3 – the sensor responsible for the drainage system is faulty.
C4 – the sensor responsible for the temperature of heat exchanger 1 is faulty.
C5 – the sensor responsible for the temperature of heat exchanger 2 is faulty.
C6 – fan motor is overloaded.
C7 – the sensor responsible for driving the blinds is faulty.
C8 – the sensor responsible for the input current is faulty.
C9 – the air inlet thermistor is faulty.
CA – outlet air thermistor is faulty.
CH – high level pollution.
CC – humidity sensor is faulty.
CJ – the temperature sensor located on the control panel is faulty.
CE – radiation sensor is faulty.
CF – the sensor responsible for high pressure is faulty.

Error codes for the outdoor unit of Daikin air conditioners (Daikin)

E0 – the protective device has tripped.
E1 – the printed circuit board located in the outdoor unit is faulty.
E3 – activation of the sensor responsible for high pressure.
E4 – activation of the sensor responsible for low pressure.
E5 – overheating relay or compressor motor overloaded.
E6 – compressor motor is blocked.
E7 – fan motor is blocked.
E8 – current overload detected.
E9 – expansion valve is faulty.
AH – the pump is blocked.
EJ – activation of an additional protective device.
EE – the permissible water level in the drainage system has been exceeded.
EF – the unit responsible for storing heat is faulty.
H0 – general sensor malfunction.
H1 – the sensor responsible for the air temperature is faulty.
H2 – sensor responsible for power supply, faulty.
H3 – the sensor responsible for high pressure is faulty.
H4 – the sensor responsible for low pressure is faulty.
H5 – the overload sensor is triggered or the compressor is not functioning.
H6 – the blocking sensor is triggered or the compressor is overloaded.
H7 – the blocking sensor is triggered or the fan is overloaded.
H8 – activation of the sensor responsible for the input voltage.
H9 – activation of the sensor responsible for the outside air temperature.
HA – activation of the sensor responsible for the output air.
HH – activation of the sensor responsible for blocking the water pump.
HC – activation of the sensor responsible for hot water.
HE – activation of the sensor responsible for the drainage system.
HF – an accident occurred in the heat storage unit.
F0 – activation of devices No. 1 and No. 2, responsible for protection.
F1 – activation of device No. 1, responsible for protection.
F2 – activation of device No. 2, responsible for protection.
F3 – temperature in the discharge pipe is too high.

Dantex Error Codes

Error codes for Dantex air conditioners (Dantex)

E1 – an error occurred in the non-volatile memory;
E2 – a zero crossing error has occurred;
E3 – no control of the fan speed of the indoor unit;
E4 – overvoltage protection mode is in effect;
E5 – there is no contact with the open temperature sensor control;
E6 – there is no contact with the evaporator temperature sensor control.

Chillers Dantex (DN)

E0 – an error has occurred in the operation of the water flow meter;
E1 – an error occurred when connecting the phases;
E2 – a communication error has occurred;
E3 – an error has occurred in the outlet water temperature sensor;
E4 - an error has occurred in the water temperature sensor at the outlet
shell and tube heat exchanger;
E5 – error in the operation of capacitor A;
E6 – error in the operation of capacitor B;

E8 – an error has occurred in the charge air temperature sensor;
E9 – an error has occurred in the flow meter;
EA – the main block revealed a decrease in the number of additional blocks;
EB – malfunctions of the frost protection system;
EC – malfunction of the drive controller;
ED – an error has occurred in the control system and communication between blocks;
Ed – electrical protection tripping;
EE – an error has occurred in the connection between the microprocessor and the control panel;
EF – an error has occurred in the inlet water temperature sensor;
RO - overheating or increased pressure has occurred;

P2 – the pressure has increased or the air in system B has overheated;
P3 – pressure in the system has decreased;
P4 – there was an overcurrent in system A;
P5 – there was an overcurrent in system B;
P6 – the pressure in the condenser of system A has increased;
P7 – the pressure in the condenser of system B has increased;
P8 – malfunction of the compressor discharge temperature sensor in system A;
Рb – protection against freezing;
PE – the temperature in the heat exchanger has decreased;
F1 – errors in the operation of permanent memory;
F2 – errors in the operation of wired controllers.

Elektrolux error codes

Error codes for Elektrolux air conditioners

E1 – pressure level exceeded;
E2 – the indoor unit has frozen;
E3 – pressure level too low;
E4 – compressor malfunction;
E5 – current overload has occurred;
E6 – there is no connection between the indoor and outdoor units;
E7 – a conflict has occurred in the operating modes of the indoor units;
E8 – the indoor unit fan is overloaded;
E9 – drainage bath is overfilled;
F0 – malfunction of the temperature sensor in the indoor unit;
F1 – malfunction of the temperature sensor entering the heat exchanger
in the indoor unit;
F2 – malfunction of the temperature sensor in the middle part

F3 – malfunction of the temperature sensor at the outlet
heat exchanger in the indoor unit;
F4 – malfunction of the ambient air temperature sensor;
F5 – malfunction of the outdoor unit temperature sensor;
F6 – malfunction of the temperature sensor entering the heat exchanger
in the outdoor unit;
F7 – malfunction of the temperature sensor of the outlet
heat exchanger in the indoor unit;
F8 – malfunction of the first discharge temperature sensor
compressor;
F9 – malfunction of the second discharge temperature sensor
compressor;
FA – malfunction of the crankcase temperature sensor of the 1st compressor;
FB – malfunction of the crankcase temperature sensor of the 2nd compressor;
FC – malfunction of the high pressure sensor;
FD – malfunction of the low pressure sensor;
EH – malfunctions in the operation of the additional heater.

Fuji Error Codes

Error codes for Fuji air conditioners

E00 – an error occurred in the connection between the remote control and the indoor unit;
E01 – an error occurred in the communication between the indoor and outdoor modules;
E02 – malfunction of the room temperature sensor;
E03 – a short circuit has occurred on the room temperature sensor;
E04 - an error occurred in the operation of the temperature sensor on the internal
heat exchanger;
E05 - a short circuit has occurred on the internal temperature sensor
heat exchanger;
E06 - an error occurred in the operation of the temperature sensor on the outside
heat exchanger;
E07 - a short circuit has occurred on the outside temperature sensor
heat exchanger;
E08 – the supply of electrical energy is interrupted;
E09 - the container intended for collecting condensate has overflowed;
E0R – malfunction of the outdoor unit temperature sensor;
E0B – a short circuit has occurred on the temperature sensor of the outdoor unit;
E0C - requires opening the temperature sensor on the drain pipe;
E0D – a short circuit has occurred on the temperature sensor of the drain pipe;
E0F – the outlet temperature is too high or too low;
E11 – malfunction of the control board;
E12 – malfunction of the indoor unit fan;
E13 – the system sends incorrect signals;
E14 – error in non-volatile memory.

General Climate Error Codes

Error codes for General Climate air conditioners

E2 – short circuit or break in the sensor responsible for the internal temperature
air.
E3 – short circuit or break in the sensor responsible for the evaporator temperature.
E4 – short circuit or break in the sensor responsible for the temperature of the condenser.
E5 – an error occurred in the operation of the drainage pump.
E6 – error in the protection of the external unit.
E7 – EEPROM error occurred.
E8 – the drain pan overflow protection has activated.

Gree Error Codes

Gree air conditioner error codes

E1 – compressor protection against too high pressure has tripped.
E2 – the frost protection of the indoor unit has activated.
E3 – compressor protection against too low pressure has tripped.
E4 – high temperature protection of the discharge tube has been activated.
E5 – system or compressor overload protection has tripped.
E6 – problems have been detected in the signal or power cables.
E7 – contradictions in the established regime.
E8 – protection of the electric motor or evaporator from overheating has tripped.
E9 – protection against the entry of cold air during heating has tripped.
E0 – frequency regulator protection against too low starting voltage has been triggered
voltage.
H6 – no return signal from the fan motor.
F0 – discharge temperature sensor is faulty.
F1 – the sensor responsible for the evaporator temperature is faulty.
F2 – the sensor responsible for the temperature of the condenser is faulty.
F3 – the sensor responsible for the air temperature in the system is faulty.
F4 – the sensor responsible for the supercharger temperature is faulty.
F5 – the sensor responsible for the compressor discharge tube is faulty.
F6 – capacitor overheating detected.
F7 – oil loss from the compressor is detected.
F8 – system or compressor overload protection has tripped.
F9 – compressor protection against high temperatures has tripped.
FF – there is no power in one of the phases or the phase monitor is faulty.
H1 – defrosting occurs.
H2 – electrostatic filter protection has tripped.
H3 – protection against severe overheating has tripped.
H4 – a system failure has occurred.
H5 – IPM block protection is triggered.
H7 – problems with the compressor.
H8 – activation of the drainage system overflow protection.
H9 – electric heater malfunction.
H0 – overheating protection triggered.
FA – activation of condenser or evaporator protection against overheating.
FH – activation of the evaporator antifreeze protection.

Error codes Green

Error codes for Green air conditioners

U1 - Current phase fault, circuit detection for compressor. Flashes 13 times. During cooling and drying operation, the compressor will stop while the indoor fan will run. When operating in heating mode, the complete unit will stop. Replacement outer panel AP1 control.

U3 - Malfunction of the voltage falling on the DC buses. Flashes 20 times. During cooling and drying operation, the compressor will stop while the indoor fan will run; When operating in heating mode, the complete unit will stop.
The supply voltage is unstable.

U5 - Full unit current fault detection. Flashes 13 times. During cooling and drying operation, stop the compressor while the indoor fan is running; During heating operation, the complete unit will stop the operation. There is a fault in the circuit of the outdoor units control panel AP1, please replace the outdoor unit control panel AP1.

U7 - Blinks 20 times. If this fault occurs during heating operation, the device will stop working. 1. Supply voltage is lower than AC175V; 2.Wiring terminal 4V loose or broken; 3. 4V will be damaged, please replace the cable.

U8 - Zero transition inspection circuit malfun-fiction Fan PIN moto. Flashes 17 times every 3s Remote controller operation or
The control panel is available, but the units will not operate. The discharge rate of the capacitor is slow, which causes the controller to make incorrect decisions. Zero crossing detection circuit of the main board abnorma. Contact flowchar repair.

U9 - Zero crossing malfunction of the outdoor unit. Flashes 18 times. During cooling operation, the compressor will stop while the indoor fan will run; During heating, the device will not work. Replacement of external control panel AP1.

Haier Error Codes

Error codes for Haier air conditioners

E0 Malfunction of condensate drainage function.
E1 The compressor has increased pressure.
E2 The heat exchanger of the indoor module is covered with ice.
E3 Insufficient pressure in the compressor.
E4 Compressor overheating.
E5 The compressor is switched off due to increased load.
E6 No communication between blocks.
E7 The indoor module does not respond to commands from the remote control.
E8 Overload of the electric motor of the indoor module.
F0 The temperature sensor in the room has turned off.
F1 The temperature sensor of the indoor module heat exchanger has turned off.
F2 The temperature sensor of the heat exchanger of the external module has turned off.
F3 The outdoor temperature sensor has turned off.
F4 The temperature sensor on the air supply has switched off.
FF The power supply is interrupted.

Hisense Error Codes

Error codes for Hisense air conditioners

Possible reasons malfunctions:
1 Error in outdoor unit heat exchanger temperature sensor a. The outdoor unit heat exchanger temperature sensor circuit is open; b. The temperature sensor of the outdoor unit heat exchanger is faulty; With. The outdoor unit control circuit board is faulty
2 Compressor discharge temperature sensor error a. The temperature sensor circuit in the compressor discharge line is open; b. The temperature sensor in the compressor discharge line is faulty; With. The outdoor unit control circuit board is faulty
5 Integrated Power Module (IPM) protection trip a. The Integrated Power Module (IPM) circuit board is faulty; b. The fan of the outdoor unit has failed; c. The electric motor of the outdoor unit fan is faulty; d. The outdoor unit fan is blocked; e. The condenser is dirty; f. The rules for installing the outdoor unit have not been followed.
6 Operation of the AC overvoltage or undervoltage protection device a. The network voltage is above or below the maximum permissible values; b. The unit supply voltage is above or below the maximum permissible values
7 Communication error between indoor and outdoor units a. Broken connecting cable; b. Damaged connection cable; With. Incorrect connection or broken connection between the filter board and the outdoor unit control circuit board
8 Overload protection device a. Fan motor malfunction; b. The evaporator and condenser are dirty; c. The air intake and air outlet are blocked; d. The printed control of the outdoor unit is faulty; e. Compressor faulty
10 Communication error between two microcircuits (control and drive) in the printed circuit board. Poor cable connection b. The printed circuit board of the outdoor unit or the circuit board of the drive is faulty;
11 Outdoor unit EEPROM memory error a. Poor quality soldering of the EEPROM chip; b. EEPROM chip installation error (incorrect position); .EEPROM chip malfunction
12 Triggering of the protection device at low outside temperatures a. This protection triggers if the outside temperature drops below 15°C; b. The outside air temperature sensor is faulty; With. The control circuit board of the outdoor unit is faulty.
13 Triggering of the protection device as a result of elevated temperature in a. The temperature sensor in the compressor discharge line is faulty; b. Insufficient refrigerant charge in the system
14 Outside air temperature sensor error a. The outside air temperature sensor circuit is open; b. The outside air temperature sensor is faulty; With. The outdoor unit control circuit board is faulty
15 Activation of compressor thermal protection due to overheating a. Compressor discharge temperature sensor open circuit b. Insufficient refrigerant charge in the system
16 Triggering of the heat exchanger protection device against freezing or overload when the indoor unit is operating in heating mode a. Normal operation of the protection device when the heat exchanger freezes or overloads; b. The indoor unit heat exchanger temperature sensor circuit is open; c. The temperature sensor of the indoor unit heat exchanger is faulty; d. The indoor unit control circuit board is faulty; e. Refrigerant circulation problem
17 Power factor compensation (PFC) a. The reactive power compensation device is faulty; b. The circuit board of the outdoor unit drive is faulty
18 DC compressor start error a. Incorrect connection or breakage of the compressor power cable; b. The circuit board of the integrated power module (IPM) of the outdoor unit is faulty; c. Outdoor unit control circuit board is faulty d. Compressor faulty
19 Compressor drive error a. Incorrect connection or breakage of the compressor power cable; b. The circuit board of the integrated power module (IPM) of the outdoor unit is faulty; c. Outdoor unit control circuit board is faulty d. Compressor faulty 7. Troubleshooting
20 Triggering of the device protecting the electric motor of the outdoor unit fan from operation with a locked rotor a. The circuit of the outdoor unit fan motor is open; b. The outdoor unit fan is blocked; With. The fan motor is faulty; d. The outdoor unit control circuit board is faulty

Hitachi Error Codes

Error codes for Hitachi brand air conditioners

01 – reversing valve malfunction or not normal
media temperature.
02 – the mode that forcibly starts the external module is activated.
03 – there is no connection between the external and internal modules.
04 – equipment malfunction, you should pay attention to the readings
other indicators.
06 – irregularities were detected in the operation of the pump that pumps out condensate.
07 – manual start of the pump is required.
08 – engine functions are impaired.
09 – there is no connection with the PCB thermistor.
10 – incorrect fan operation.
13 – PCB is not functioning.

Hyundai Error Codes

Hyundai air conditioner error codes

0 – error in non-volatile memory;
E1 – an error occurred in connecting the blocks: indoor and outdoor;
E2 – malfunction of the outdoor unit sensor;
E3 – malfunction of the indoor unit fan motor;
E4 – there is a break (short circuit) in the internal air temperature sensor;
E5 – there is a break (short circuit) in the evaporator temperature sensor;
EC - coolant leak has occurred.

Jax Error Codes

Error codes for Jax air conditioners

E2 – a malfunction has occurred in the indoor air temperature sensor;
E3 – there is a malfunction in the evaporator temperature sensor;
E4 – there is a malfunction in the condenser temperature sensor;
E5 – an error occurred in the operation of the drainage pump;
E6 – protection in the external unit has tripped;
E7 – failures in non-volatile memory;
E8 – the drain pan is full.

Kentatsu Error Codes

Error codes for Kentatsu air conditioners

E1 – there is no contact with the air temperature sensor in the internal
block;
E2 – there is no contact with the evaporator temperature sensor;

E4 – there is no contact with the outdoor air temperature sensor;
E5 – there is no contact between the indoor and outdoor units;
E6 – warning about overheating or freezing of the outdoor module;
E10 – there was a pressure failure in the compressor;
E13 – electricity is not supplied due to the wires being mixed up;
E14 – supply of electricity to the wrong phase;
P4 – the evaporator has overheated;
P5 – the capacitor has overheated;
P7 – excess temperature level in the compressor;
P9 – antifreeze protection is turned on;
P10 – the air outlet value is incorrect;
P11 – the air intake pressure exceeds acceptable standards;
P12 – supply of high voltage current;
HS – the outdoor module is defrosting.
EC - Freon leak.

Models Kentatsu KSGH/KSRH

E1 – errors occurred in non-volatile memory;
E2 – a failure occurred during the transformation of the zero cycle;
E3 – incorrect fan rotation;
E4 – supply of too high voltage to the compressor;
E5 – there was a communication failure with the internal air temperature sensor;
E6 – there was a communication failure with the evaporator temperature sensor.

Models Kentatsu KSFU/KSRU

P4 – the evaporator of the indoor module has overheated;
P5 - the condenser of the outdoor module has overheated;
P9 – thawing is in progress;
E1 – no voltage to temperature sensors;
E2 – there is no connection with the evaporator temperature sensor;
E3 – there is no contact with the condenser temperature sensor;
E6 – a malfunction has occurred in the external module.

Duct type air conditioners

E0 – malfunction of the temperature sensor in the room;
E1 – a malfunction has occurred in the operation of the evaporator temperature sensor;
E2 – a malfunction has occurred in the temperature sensor of the external module;
E3 – there is no connection with the outdoor module;
E4 – a malfunction has occurred in the condenser pump;
E5 – errors in non-volatile memory;
E6 – the condensate tray is full.

Lessar error codes

Lessar air conditioner error codes

E0 – an error has occurred in the flow sensor;
E1 – incorrect phase rotation;
E2 – a communication error has occurred;
E3 – an error has occurred in the direct water temperature sensor;
E4 – an error has occurred in the temperature sensor of the shell-and-tube heat exchanger;
E5 – an error has occurred in the temperature sensor of condenser pipe A;
E6 – an error has occurred in the temperature sensor of condenser pipe B;
E7 – an error has occurred in the outside air temperature sensor;
E8 - an error has occurred in the compressor discharge temperature sensor
systems A;
E9 – an error has occurred in the flow temperature sensor;
EA – loss of communication with slave units has occurred;
P0 – pressure or temperature in system A is exceeded;
P1 – pressure in system A has decreased;
P2 – pressure or temperature in system B is exceeded;
P3 – pressure in system B has decreased;
P4 – there was an excess current in system A;
P5 – there was an excess current in system B;
P6 – the condensation temperature in system A is exceeded;
P7 – the condensation temperature in system B is exceeded;
P8 – temperature rise in the compressor;
Рb – protection against freezing.

LG Error Codes

Error codes for LG air conditioners (Elgie)

01 – a short circuit has occurred in the sensor responsible for air temperature,
or circuit break.
02 – there is a short circuit in the sensor responsible for temperature
evaporator, or open circuit.
03 – a poor connection between the drive console and
indoor unit.
04 – an error occurred drain pump or float
sensor responsible for the condensate level.
05 - an error was detected in the interconnection of internal and external
blocks.
06 – a short circuit has occurred in the temperature sensor responsible for the external
block or open circuit.
07 – internal multi-system units operate in different modes.
HL – the float sensor has opened.
CL - child lock activated.
Po – the device operates in jet cool mode.

MDV Error Codes

Error codes for MDV air conditioners

Free Match Series
Error indication on the indoor unit


Fault codes on the external unit

Universal external unit

Models with three-phase power supply with a capacity of 30, 36, 48, 60 Btu/h

Midea Error Codes

Error codes for Midea air conditioners

E0 – an error occurred in the non-volatile memory of the indoor unit.
E1 – an error occurred in the connection between the outdoor and indoor units.
E2 – an error occurred when crossing zero.
E3 – an error occurred during operation of the fan motor.
E4 – short circuit or break in the sensor responsible for the internal temperature
air.
E5 – short circuit or break in the sensor responsible for the evaporator temperature.
EC – refrigerant leak detected.

Mitsubishi Electric error codes

Error codes for Mitsubishi Electric air conditioners (Mitsubishi Electric)

P1 - an error has been detected in the input sensors.
P2 – error in the operation of the sensor responsible for the TH5 heat exchanger.
P4 – the drain pan is full or the CN4F sensor has broken.
P5 – an error occurred in the drain pump.
P6 – overheating or freezing has occurred.
P9 – error in the operation of the sensor responsible for the TH2 heat exchanger.
PA – the compressor is stopped forcibly.
E0, E3 – communication with the control panel is lost.
E1, E2 – problems with the control board.
E9, EE – there is no connection between the external and internal units.
U1. Ud – overheating protection has tripped, or sensor 63H has detected
high pressure.
U2 – low pressure detected in the supercharger, not enough refrigerant.
U3, U4 – short circuit or break in the temperature sensor of the external unit.
U5 - the condenser temperature does not correspond to the norm.
U6 – forced stop of the compressor or malfunction detected
power module.
U7 – lack of refrigerant or low pressure in the supercharger.
U8 – the fan motor installed on the external unit is stopped.
U9, UN – low or high supply voltage, or problems with
current sensor.
UF – the compressor is jammed or a current overload is detected.
UP – the compressor has stopped due to overload.
Fb – problems with the external unit control board.

Mitsubishi Heavy error codes

Error codes for Mitsubishi Heavy air conditioners (Mitsubishi Heavy)

E1 – a failure has occurred in the printed circuit board of the indoor unit or
malfunctions in the control panel;
E2 – duplication of addresses of internal units has occurred;
E3 – the address of the outdoor unit is incorrect;
E5 – a malfunction has occurred in the outer side control board;
E6 – there was a break (short circuit) of the evaporator sensor;
E7 – there is a break (short circuit) in the sensor of the indoor unit;
E8 – evaporator overload occurred;
E9 – error in the operation of the drainage pump;
E10 – more than 16 blocks are connected to the control panel;
E11 – more than 1 unit is connected to the control panel when the address is occupied;
E12 – errors in address settings;
E14 – incorrect settings of the master and slave connections have been made;
E16 – a malfunction has occurred in the operation of the indoor unit fan;
E28 - there is a malfunction in the control panel sensor;
E30 - an error occurred in connecting the outdoor and indoor units;
E31 – incorrect address settings;
E32 – there is a wire break or the phase sequence is incorrect;
E33 – wire winding has broken;
E34 – winding phase opens;
E35 - malfunction of the sensor or increase in temperature in
capacitor;
E36 – there was a deviation in the outlet air temperature above normal;
E37 – there is a malfunction in the condenser temperature sensor;
E38 – a malfunction has occurred in the outside air temperature sensor;
E39 – a malfunction has occurred in the temperature sensor of the discharge pipe;
E40 - there was an increase in pressure in the system;
E49 – a decrease in pressure has occurred or the refrigerant is insufficient;
E53 - there is a malfunction in the suction pipe thermistor;
E54 – low pressure sensor disconnected;
E55 - there is a malfunction in the temperature thermistor inside the compressor;
E56 - there is a malfunction or break in the power temperature sensor
transistor;
E57 – insufficient amount of coolant;
E59 – the compressor does not start;
E60 - an error occurred in the positioning of the compressor;
E63 - an emergency shutdown of the indoor unit occurred.

Neoclima error codes

Error codes for Neoclima air conditioners

Code E0 - error connecting indoor and outdoor units.
Code E1 - an error in the operation of the indoor unit. Lost communication with the controller.
Code E2 - an error in the operation of the temperature sensor.
Code E3 - the temperature sensor of the condenser tube is faulty.
Code E8 - malfunctions in the heating system.
Code F0 - an error in the operation of the internal fan.
Code F2 - the external protection system has tripped.
Code F3 - protection in the high pressure system has tripped.
Code F4 - protection in the low pressure system has tripped.
Code F5 - water overflow protection has tripped.
Code F8 - overheating protection of the outdoor unit has tripped.
Code F9 - incorrect phase sequence. Error in the system.
Code P4 - the compressor of the inverter air conditioner is faulty.
Code P6 - error in the operation of the outdoor EEPROM unit.

Panasonic Error Codes

Error codes for Panasonic brand air conditioners (Panasonic)

H00 – no problems found.
H11 – there is no connection between the external and internal units or there is a problem
control boards.
H12 – the power of the indoor units does not match the outdoor one.
H14 – air sensor short circuit.
H15 – short circuit of the sensor responsible for the temperature of the compressor.
H16 – lack of freon in the external unit or the current circuit is broken
board transformer.
H17 – break in the sensor responsible for the temperature on the tube,
designed to dry out the refrigerant.
H19 – the board, fan motor or connectors are jammed
wires
H21 – the float sensor drainage system is faulty or clogged.
H23 – sensor 1, responsible for the evaporator temperature, is broken.
H24 – sensor 2, responsible for the evaporator temperature, is broken.
H25 – problems with the ionization unit or internal board.
H26 – the ionizer has failed.
H27 – short circuit of the sensor responsible for the outside air temperature.
H28 – short circuit of the sensor responsible for the temperature of the condenser.
H30 – the sensor responsible for the discharge temperature is broken.
H32 – short circuit of the sensor responsible for the temperature of the capacitor at the outlet.
H33 – an error occurred in the interconnect connection.
H34 – short circuit of the sensor responsible for the temperature of the module radiator.
H35 – a pump malfunction or drainage blockage has been detected.
H36 – short circuit of the sensor responsible for the temperature of the gas pipe.
H37 – short circuit of the sensor responsible for the temperature of the liquid tube.
H38 – a discrepancy between the outdoor and outdoor units has been detected.
H39 – freon circuits and wires are mixed up, or does not work
solenoid valve.
H41 – wires are connected incorrectly.
H50 – problems with the board or fan motor.
H51 – nozzle clogged.
H52 – limiter switch is faulty.
H58 – Patrol Sensor unit is faulty.
H64 – the sensor responsible for high pressure is faulty.
H97 – problems with the compressor motor or indoor unit board.
H98 – overheating protection is faulty.
H99 – evaporator freezing detected.
F11 - four-way valve does not work correctly.
F17 – indoor unit frozen.
F90 – compressor winding is broken.
F91 - the refrigeration circuit is not working correctly.
F93 – compressor winding is broken.
F94 – supercharger high pressure protection does not work.
F95 – the heat exchanger of the outdoor unit has overheated.
F96 - the power module has overheated.
F97 – compressor temperature exceeded.

Pioneer error codes

Error codes for Pioneer air conditioners

Air conditioner error code Pioneer Yellow diode Green diode
Red diode

Decoding Pioneer air conditioner error
E0 * The function of the discharge temperature sensor is broken
E6 * The function of the capacitor temperature sensor is impaired
E6 * The function of the outdoor air temperature sensor is broken
E1 * The function of the temperature sensor in the room is broken
E2 * The function of the evaporator temperature sensor is impaired
E3 m m m Indoor module fan is broken
E4 m * IPM system failure
E5 m m Power failure
E8 * m m Voltage supply failure
E9 m The compressor started working incorrectly
EA * Incorrect communication with the outdoor module
EU m * The air conditioner is supplied electricity invalid parameters
EEPROM failure
EP No communication between external and internal modules
P0 The unit started working incorrectly
P1 Discharge overheating
P2 Increased current in the circuit
P3 Mains voltage too high
P4 m m * No connection with current relay
P5 Evaporator overheating
P6 Condenser overheating
P7 Protection of the IPM matrix
* - diode lights up, m - diode blinks.

Error codes for Pioneer external module air conditioners:

Pioneer air conditioner error code (number of diode blinks) Explanation of Pioneer air conditioner error
1 No connection with external temperature sensor
2 No communication with the capacitor temperature sensor
3 No connection with discharge temperature sensor
4 The current in the electrical network is too high
5 Mains voltage too high
7 No communication with indoor module
9 The unit is not put into operation correctly
12 Mains voltage exceeded
13 IPM board protection
16 Compressor temperature exceeded
17 Discharge temperature too high
18 Condenser temperature too high
19 IPM board failure
20 Communication failure between indoor and outdoor modules
22 Deicing

Quattroclima error codes

Error codes for Quattroclima air conditioners

Error or task
RUN indicator
Digital
display
Cause and troubleshooting
Switching to defrost mode
Flashes 1 time per second
dF
Is not an error.

Preventing cold air supply
Flashes once every 3 seconds
The indoor unit fan does not rotate. This is not an error.
This is a service function of the air conditioner and its settings cannot be changed.
Room temperature sensor error
Flashes 2 times in a row every 4 seconds
E2



Pipe temperature sensor error
Flashes 3 times in a row every 5 seconds
E3
1. Check the temperature sensor resistance, if the sensor resistance is not normal for the current temperature, replace the sensor.
2. Check sensor connection and circuit integrity
3. The control board is faulty, replace the board.

Outdoor unit error
Flashes 4 times in a row every 6 seconds
E4
1. Check the compressor current and winding resistance.
2. Check operating pressure. In the event of a refrigerant leak: remove any remaining refrigerant and repair the leak, evacuate the system and charge according to the scale.
3. Check the outdoor unit pipe sensor.
4. Check the condenser of the outdoor unit, it should be clean, free of dust and dirt.
5. Check the operation of the outdoor unit fan.
6. The control board is faulty, replace the board.
Indoor unit fan control error
Flashes 5 times in a row every 7 seconds
E5
1. Check the connectors connecting the fan motor to the control board.
2. Check the indoor fan motor.
3. Check the control board components for damage. Replace damaged components or control board.
Internal board error
Flashes 6 times in a row every 8 seconds
E6
1. Check the indoor unit fan.
2. Check the output signal from the control board. Replace the control board.
Communication error between blocks
Flashes 7 times in a row every 9 seconds
E7
1. Check the inter-unit electrical connection.
2. Check the compressor current and winding resistance.
3. Check operating pressure.
overheat protection
Flashes 8 times in a row every 10 seconds
E8
1. Check the filters, they must be clean.
2. Check the operation of the indoor unit fan.
3. Check the indoor unit pipe sensor.
4. Check operating pressure. In the event of a refrigerant leak: remove any remaining refrigerant and repair the leak, evacuate the system and charge according to the scale.

Samsung Error Codes

Error codes for Samsung air conditioners (Samsung)

E464 – an overload has occurred in the power module.
E461 – the compressor cannot be started.
E473 – the compressor is blocked.
E466 – incorrect voltage in the DC module of the board.
E221 - an error occurred in the sensor responsible for the outside temperature
air.
E416 – overheating detected.
E251 - an error occurred in the temperature sensor.
E468 – an error occurred in the current sensor.
E465 – an error occurred in the operation of the compressor.
E237 - an error occurred in the temperature sensor winding.
E202 – the time allotted for the connection has expired.
E458 – an error occurred in the fan operation.
E471 – an error occurred in the OTP operation.
E467 – an error occurred when rotating the compressor.
E469 – an error occurred in the voltage sensor.
E554 – refrigerant leak detected.
E472 – AC voltage error.
E121 – short circuit in the sensor responsible for the internal air temperature.
E122 – short circuit in the sensor responsible for the evaporator temperature.
E154 - an error occurred in the indoor unit fan.
E101 – time allowed for connection has been exceeded.
E186 – MPI error detected.

Sanyo Error Codes

Error codes for Sanyo air conditioners

E01, E05, E14, E17 – an error occurred when receiving a communication signal;
E02, E04, E06, E10, E20 – an error occurred when transmitting a communication signal;
E03 – an error occurred in the remote control;
E07 – low power level of the indoor unit;
E08 – duplication of setting the destination of the indoor unit has occurred;
E09 – duplication occurred in the control panel settings;
E11 – duplication occurred when carrying out simultaneous multi-control operations;
E15 – high power level of the indoor unit;
E16 – no connection of elements of the indoor unit;
E18 – an error occurred in connecting to MDC;
E31 – errors occurred in the group settings of the indoor unit;
L01 – the types of indoor and outdoor units do not match;
L02 – duplication of the main block occurred in group control;
L03 – address duplication occurred in the outdoor unit;
L04 – group connection has been made for the indoor unit;
L07 – address or group not set;
L08 – power in the indoor unit is not set;
L09 – an error occurred in setting the power of the outdoor unit;
L10 – an error occurred in the connection of the control circuits;
L11 – an error occurred in setting the power of the indoor unit;
L13 – a failure occurred as a result of connecting the ceiling panel;
P01 – malfunction of the float relay;
P03 – there were problems with nutrition;
P05 – no gas;
P09 – overheating occurred;
P10 – there were problems with the discharge temperature;
P15 – 4-code valve blocked;
P19 – cooling overloaded;
P20 – malfunction of the outdoor unit fan;
P22, P26 – malfunctions of the compressor inverter;
P29 – errors in the operation of multi-control when performing simultaneous operations;
P31 – compressor overload;
H01, F02 – malfunction of the temperature sensor of the indoor unit;
F01 – malfunction of the temperature sensor in the outdoor unit;
F04, F06, F07 – temperature violation in the outdoor unit;
F08 – violations in the intake temperature mode;
F10 – violations in the discharge temperature mode;
F12, F29, F31 – errors in the internal non-volatile memory.

TCL Error Codes

Error codes for TCL air conditioners

E0 RUN、TIMER –both winking In and out communication failure. There is no connection between the external and internal units, check the inter-unit connection, the boards of the internal and external units
EC RUN、TIMER –both winking Outdoor communication failure
E1 RUN-1 time/8s Outdoor sensor outdoor sensor
E2 RUN-2 times /8s Indoor coil temperature sensor Evaporator temperature sensor malfunction
E3 RUN-3 times /8s Outdoor coil temperature sensor Condenser temperature sensor faulty
E4 RUN-4 times /8s System abnormity System is faulty
E5 RUN-5 times /8s Type mismatch
E6 RUN-6 times /8s Indoor fan motor Indoor fan motor error
E7 RUN-7 times /8s Outdoor temperature sensor Outdoor unit temperature sensor
E8 RUN-8 times /8s Discharge temperature sensor Compressor discharge temperature sensor
E9 RUN-9 times /8s Invert module abnormity Inverter board is faulty
EF RUN-10 times /8s Outdoor fan motor（DC）
EA RUN-11 times /8s Current sensor
EE RUN-12 times /8s EEPROM failure Malfunction of ROM, firmware.
EP RUN-13 times /8s Top of compressor temperature switch Compressor cut-off thermostat
EU RUN-14 times /8s Voltage sensor
EH RUN-15/8 sec Intake temperature sensor Intake pipe temperature sensor

Emergency stop

P1 RUN: Blink; TIMER: 1 blink /8 sec Overvoltage / undervoltage protection Low/high supply voltage
P2 RUN: Blink; TIMER: 2 blink /8 sec Overcurrent protection
P4 RUN: Blink; TIMER: 4 blink /8 sec Exhaust overtemperature protection Protection against overheating of exhaust gases
P5 RUN: Bright; TIMER: 5 blink /8 sec Subcooling protection under cooling mode Subcooling protection in cooling mode
P6 RUN: Bright; TIMER: 6 blink /8 sec Overheating protection under cooling mode Overheating protection in cooling mode
P7 RUN: Bright; TIMER: 7 blink /8 sec Overheating protection under heating mode Overheating protection under heating mode
P8 RUN: Bright; TIMER: 8 blink /8 sec Outdoor overtemperature / undertemperature protection Outdoor overheating / undercooling protection
P9 RUN: Blink; TIMER: 9 blink /8 sec Drive protection (software control)
P0 RUN: Blink; TIMER: 10 blink /8 sec Module protection (hardware control) Module protection (hardware control)

Toshiba Error Codes

Error codes for Toshiba air conditioners (Toshiba)

00-0C – error in the board of the indoor unit or sensor responsible for
air temperature inside the device.
00-0d – error in the control board or sensor responsible for
radiator temperature.
00-11 – problems with the motor or fan board.
00-12 – repair or replacement of the control board is required.
01-04 – the board or fuses on it have burned out, interconnection
installed incorrectly.
01-05 – an error was detected in the inverter board.
02-14 – overload detected in the inverter.
02-16 – a short circuit occurred in the compressor windings.
02-17 – an error occurred in the current sensor.
02-18 – an error occurred in the temperature sensors.
02-19 – an error occurred in the board temperature sensor.
02-1A - the motor or board is burned out or blocked.
02-1b - a malfunction in the board or sensor responsible for the temperature of the board.
02-1C – the compressor did not start within the allotted time.
03-07 – an error occurred in the inverter board or a defect was noticed
refrigerant.
03-1d – compressor is faulty.
03-1E - an error occurred in the sensor responsible for the suction tube.
03-1F – the refrigeration circuit is overloaded or the voltage in the compressor is low.
03-08 – four-way valve is faulty.

There is “CHEK” on the remote control, press it, point the remote control at the air conditioner and use the temperature arrows to scroll through the codes; on the recorded codes, the air conditioner will produce a signal. This way you will determine the error code, and you can also reset it. If the error is not critical.

Zanussi error codes

Error codes for Zanussi air conditioners

Error codes indicated in the indoor unit
Error code Malfunction Display indication Note
E2 Faulty room temperature sensor TIMER lamp flashes at 5 Hz
E3 Evaporator sensor malfunction START lamp flashes at 5 Hz
E5 Condenser sensor malfunction Defrost lamp flashes at 5 Hz The system will automatically work correctly after the fault is corrected
F5 Drain pan float switch fault Alarm lamp flashes at 5 Hz
F2 Malfunction in the external unit Defrost and alarm lamp flashes at a frequency of 5 Hz
P6 EEPROM malfunction START and TIMER lamps flashing at 5 Hz The system will work normally after a complete shutdown.

Indication of error codes in the Zanussi external unit
Malfunction Indication on the board
Low pressure protection Flashes 4 times every 6 seconds
High pressure protection Flashes 3 times every 5 seconds
Rephase protection Flashes 9 times every 11 seconds
Overcurrent protection Flashes 7 times every 9 seconds
Outside temperature sensor failure Flashes 5 times every 7 seconds
Outdoor heat exchanger overheat protection Flashes 2 times every 4 seconds
Defrost protection Flashes 1 time every 3 seconds
EEPROM error Flashes 8 times every 10 seconds