Error codes for air conditioners allow the service engineer to quickly find and efficiently fix faults.

Air conditioner diagnostics

This is the first thing to do before servicing or repairing it. Diagnostics of the air conditioner allows you to identify breakdowns and malfunctions in the system. Whether it is a lack of refrigerant that needs to be replenished, errors in the operation of the air conditioner, or malfunctions of the main components.

Timely and competent diagnostics of malfunctions will allow the service engineer to quickly and efficiently eliminate malfunctions. So, to return a healthy microclimate to the client's home or office.

All modern air conditioners have a developed self-diagnosis system. As a result of analyzing the state of the equipment, the system identifies the cause of the malfunction and displays the error code on the display (of the remote control, board or mode indicator). Below are the error codes for air conditioners (alarm code) various brands. Using this information, you can independently read the error code and repair the air conditioner. This will significantly save the time of equipment diagnostics and avoid inaccuracies in determining the nature and location of the breakdown.

Air conditioner error codes

We have selected for you information about error codes for air conditioners and split systems of different brands.

If you need an authorized service center for air conditioner repair - it's for us! EUROBUSINESS is your reliable partner!

Error codes for Beko BKN, AKN air conditioners

⊕ - blinking, 2 - on, 3 - off. If there are these errors, the operation of the air conditioner will be automatically terminated.

Error codes for Beko AKH, AKP, AS, BKH, BKP, BS air conditioners

Error codes for Beko inverter air conditioners BKC 090 INV, BKC 120 INV, BKL090 INV, BKL120 INV

If the BEKO air conditioner does not work, this is for us!

Error codes for Carrier air conditioners

If a malfunction is detected, the green indicator (P) and the orange indicator (R) flash at a frequency of 0.1 seconds, indicating a fault code. It should be noted that the orange indicator (R) corresponds to the tens in the number - the fault code. The green indicator (P) corresponds to the units in the number - the fault code.
There are 2 seconds between blinking orange and green indicators. The sequence is repeated at intervals of 4 seconds.

For example, fault code 13. Orange LED flashes once, both LEDs are off for 2 seconds, green LED flashes three times at 0.5 second intervals, both LEDs are off for 4 seconds.
The sequence is repeated until the fault is corrected. If the fault code is less than 10, then the orange indicator does not blink.

If the CARRIER air conditioner does not work, this is for us!

Error codes for Chigo air conditioners

If the CHIGO air conditioner does not work, this is for us!

Error codes for Daewoo air conditioners

If the Daewoo air conditioner does not work, this is for us!

Error codes for Fujitsu General air conditioners

Fujitsu General Ltd. introduced to the market New Product for diagnostics of split systems and multi-split systems GENERAL. The tool is a set of adapters connecting outdoor unit with a computer, and a PC program. With their help, a specialist conducting equipment diagnostics can see in real time the parameters of the compressor, fan motor, EEV, sensor readings, as well as an error log. In the process of testing, it is possible to record a work log with the issuance of a report.

The adapter is suitable for working with multi-split systems, as well as with most inverter split systems(wall, ceiling, channel, cassette).

Modern Fujitsu General air conditioners have a very advanced self-diagnosis system, according to the results of which the control system, when a particular malfunction is detected, blocks the operation of the entire device and at the same time reports the cause of the malfunction.

The Fujitsu General air conditioner control system reports any malfunctions by flashing an LED on the panel of the indoor (in some cases outdoor) unit. When a particular malfunction of the air conditioner is detected, the LEDs light up or flash in a certain sequence, which corresponds to the detected error. If the air conditioner control system has detected more than one error, then the malfunction with the highest priority is displayed first, and then all the others.

Error codes for Fujitsu General air conditioners are shown in the table.

For some models (see list *), depending on the error, the OPERATION, TIMER, SWING indicators work according to the following principle: O- fast blinking; X- slow blinking; - OFF

* Внутренний блок: ASG18FBAJ, ASG18FBBJ, ASG18UBAJ, ASG18UBBJ, ASG24FBBJ, ASG30FBBJ, ASG18FBBX, ASG18UBBN, ASG24FBBN, ASG24UBBN, AWG18FBAJ, AWG18FBBJ, AWG18UBAJ, AWG18UBBJ, AWG24FBBJ, AWG24UBBJ, AWG30FBBJ, AWG30UBBJ, AWG14UBBJ, ABG14FBBJ, ABG14FBBJ, ABG18FBBJ, ABG18FBBJ, ABG181BBJ, ABG181BBJ, ABG24FBBJ, ABG24FBBJ, ABG241BBJ, ABG241BBJ, AWG24FBAJ, AWG24UBAJ.
* Внешний блок: AOG18FNAK, AOG18FNBK, AOG18UNAKL, AOG18UNBKL, AOG24FNBK, AOG24UXBKL, AOG30UNBDL, AOG18FNBX, AOG18UXBXL, AOG24FXBX, AOG24UXBXL, AOG18FNAK, AOG18FXBK, AOG18UNAKL, AOG18UXBKL, AOG24FNBK, AOG24UXBKL, AOG30FNBDL, AOG30UNBDL, AOG14USBJ, AOG14FNBK, AOG14FXBX, AOG18FNBK, AOG18FXBX, AOG18UXBKL, AOG18UNBNL, AOG24FNBK, AOG24FXBX, AOG241XBKL, AOG24UXBXL, AOG24FXAD, AOG24UXADL

If the Fujitsu General air conditioner does not work, this is for us!

Error codes for Haier air conditioners

Repair of air conditioners HAIER (HAYER) is carried out on the basis of an analysis of the operating parameters of devices and fault codes.

If there are no errors or malfunctions, but the unit does not start, the start conditions may not be as required. In this case, the following standby codes will be displayed on the display of the head unit:

Error codes and malfunctions of indoor units of HAIER air conditioners

Error codes and malfunctions of the inverter outdoor unit

The tables show only some of the HAIER air conditioner trouble codes. We remind you that HAIER air conditioners are technically sophisticated equipment. Error codes are provided for qualified and certified technicians. That is, for those who are professionally engaged in the repair of HAIER air conditioners, and not for ordinary users. Trust the repair of HAIER air conditioners to professionals.

If the Haier air conditioner does not work, this is for us!

Hisense Air Conditioner Error Codes

If a malfunction occurs, press the Sleep button on the remote control 4 times - the error code will light up on the 7-segment display (see table below). If there are several errors, then press the Sleep button 4 times again - the LED indicator will light up with the following error code.

The updated remote control, which has 4 modes of operation of the "Sleep" button, allows you to set 4 different combinations. When using it to check error codes, you must press the "Sleep" button 10 times. After that, error codes will start to be displayed.

Error codes for IGC air conditioners

IMS MINI (IMS-EM080NH, IMS-EM100NH, IMS-EM120NH, IMS-EM140NH, IMS-EM160NH)

Error codes for Kentatsu air conditioners

Error codes Kentatsu KSVP-HF

E2 - room temperature sensor malfunction
EЗ - malfunction of the evaporator temperature sensor
E4 - malfunction of the temperature sensor of the outdoor unit
E6 - outdoor unit malfunction
E7 - EEPROM error
E8 - excess water level

Error codes Kentatsu KSKT-HF channel type

E0 - Faulty room temperature sensor
E1 - Faulty evaporator temperature sensor
E2 - Faulty outdoor unit temperature sensor
E3 - outdoor unit defective
E4 - faulty drain pump temperature sensor
E5 - EEPROM error
E6 - rising water level

Error codes Kentatsu KSFU models: KSFU/KSRU76HFDN3, KSFU/KSRU140HFDN3

P4 - thermal protection of the evaporator of the indoor unit
P5 - thermal protection of the capacitor of the external unit
P9 - protection of the defrost function or creation of a comfortable air flow
E1 - break or short circuit T1 temperature sensor circuits


E6 - outdoor unit protection

Error Codes Kentatsu KSGH/KSRH

Models: KSGH/KSRH21CFDN1 KSGH/KSRH26CFDN1, KSGH/KSRH35CFDN1 KSGH/KSRH53CFDN1, KSGH/KSRH21HFDN1 KSGH/KSRH26HFDN1, KSGH/KSRH35HFDN1
E1 - EEPROM error (non-volatile memory on the board)
E2 - zero crossing error
EЗ - abnormal fan speed
E4 - compressor current protection tripped 4 times
E5 - indoor air temperature sensor shorted / broken
E6 - evaporator temperature sensor shorted / broken

Kentatsu Error Codes floor type KSFU70XFAN1 /KSRU70HFAN1, KSFU120XFAN3 / KSRU120HFAN3

P4 - evaporator temperature protection
P5 - condenser temperature protection
P7 - Discharge temperature too high. Compressor protection enabled
P9 - too low outdoor temperature, when it rises, the protection will turn off automatically
P10 - outlet pressure protection
P11 - suction pressure protection
P12 - overcurrent protection
E1 - indoor air temperature sensor T1 shorted / broken
E2 - evaporator temperature sensor T2 shorted / open
E3 - T3 condenser temperature sensor short/open
E4 - outdoor temperature sensor closed T4 shorted / broken
E5 - communication between the indoor and outdoor units is broken
E6 - outdoor unit protection
E10 - compressor suction pressure error
E13 - compressor phase error
E14 - incorrect compressor phasing
HS - start defrost

If the Kentatsu air conditioner does not work, this is for us!

Error codes for LG air conditioners

LGMV is a mobile application developed by the manufacturer for remote monitoring of operating parameters of LG air conditioning systems. The app helps engineers evaluate Current state equipment. The analysis is based on a multi-year operation cycle. The program helps not only to quickly identify problems in the system, but also gives recommendations for resolving the issue.

The LGMV diagnostic system provides monitoring of system operating parameters, prevention and prevention of system malfunctions. All this certainly simplifies diagnostics and commissioning. LGMV consists of a wireless communication module and a free smartphone app. To use the LGMV mobile application, an exclusive Bluetooth module is required, the corresponding connector of which must be connected to the CN-LGMV port on the main board of the outdoor unit.

LGMV main features:

Visual display of key information about the operation of the air conditioner.
Graphic indication of pressure and other parameters.
Controls the operation mode of the indoor units when the unit is connected to the outdoor unit.
Saving data on the operation of the air conditioner as a file.
Operation report — the result of the testing operation is generated into an HTML document.
Error number indication and support for error search in the list from PDF document.

Mobile LGMV can be downloaded, for example, from Google Play as a product of LG Electronics, Inc. as a tool for Maintenance, troubleshooting for LG air conditioning systems. The LGMV mobile application uses a limited resource on a smartphone and processes data in real time. Data monitoring may be difficult or data may not be fully saved if the performance of the smartphone is poor.

It is recommended to use a high performance smartphone. If system resources are insufficient due to other Internet applications that are enabled, data monitoring may fail in addition to monitoring. The monitoring function and saving function may not work fully. And also Bluetooth communication connection can be disabled. In addition, the application may be disabled due to a lack of resources or an unexpected error.

The communication level may increase depending on the number of outdoor and indoor units. Bluetooth transmission distance may be shortened to the point of turning off data transmission depending on the weather or conditions. environment(electromagnetic waves or obstacle), etc. It is recommended to use the Bluetooth module for a short distance.

If the LG air conditioner does not work, this is for us!

Error codes for MDV air conditioners

Error indication on MDV indoor unit

If you need diagnostics of the MDV air conditioner - this is for us!

Error indication on external MDV unit

If the MDV air conditioner does not work, this is for us!

Mitsubishi Electric Air Conditioner Error Codes

If the Mitsubishi Electric air conditioner does not work, this is for us!

Mitsubishi Heavy Air Conditioner Error Codes

If the air conditioner does not work Mitsubishi Heavy- it's for us!

Error codes for Wisnow air conditioners

If the Wisnow air conditioner does not work, this is for us!

Error codes for Polaris air conditioners

If the Polaris air conditioner does not work, this is for us!

Sanyo Air Conditioner Error Codes

Description of the malfunctions that are indicated on the board of the SANYO W-ECO MULTI SYSTEM outdoor unit. Valid for SPW-CR1503GDYH8, SPW-CR1903GDYH8, SPW-CR703GDCH8, SPW-CR903GDCH8, SPW-C1503GDYH8, SPW-C1903GDYH8, SPW-C703GDCH8, SPW-C903GDCH8.

If the Sanyo air conditioner does not work, this is for us!

Sharp Air Conditioner Error Codes

For example, fault indication in SHARP air conditioners models AY-A184E / AE-A184E, AY-A244E / AE-A244E.

If the Sharp air conditioner does not work, this is for us!

Error codes for Toshiba air conditioners

If the Toshiba air conditioner does not work, this is for us!

The work performed during the diagnostics corresponds to the work performed during. The only difference is that during the diagnostics, all the main parameters of the equipment operation are checked and recorded, and when after-sales service identified deviations from the norm are eliminated.

The list of works in the diagnosis of air conditioning

During the diagnosis of the air conditioner, firstly, visual inspection for the absence mechanical damage. Not only hull, but also hydraulic and electrical parts of the equipment are inspected. In addition, the reliability of the fasteners of the external and internal units is checked. As well as the quality of the clamps of all contact connections electrical equipment. Before turning on the equipment, you need to check the status air filters. They must be not only clean, but also without damage. After inspection, as a rule, switching to the "cooling" mode is performed. Use the remote control to test the system.

During the functional test, the indication of the air conditioner modes is evaluated, as well as the operation of the mechanically driven exit blinds. One of the indirect indicators of the efficiency of the system is the control of the temperature of dry air at the inlet and outlet of the evaporator. With the help of pressure gauges, the average suction / discharge pressure is measured (with free access to the outdoor unit). Of course, it is mandatory to check the tightness of the connection between the indoor and outdoor units. In addition, you need to make sure that there are no leaks in drainage system conditioner.

If something went wrong

The specialist can also judge the nature of the malfunction by the “behavior” of the air conditioner. For example, if the air conditioner turns on and immediately turns off, after which an error message is displayed - most likely, the matter is in the sensors (malfunction of the air temperature sensors or the evaporator).

If the air conditioner turns on, runs for 15-20 seconds, and then turns off, the indoor unit fan motor is most likely defective (rotation speed is lower than the set rpm).

If the air conditioner does not turn on at all and at the same time all the LEDs flash (or do not light up), most likely, the control circuit board has failed.

Simultaneous flashing of all indicator lamps of the air conditioner, as a rule, means only a failure of the program settings of the control board. Most likely, this is due to the non-compliance with the GOSTs of the network parameters, for example, due to a power surge in the network. It is not difficult to eliminate this malfunction - it is enough just to reprogram the main control board. Since information about codes is provided only to authorized service centers, in this case you need to contact our experts.

Before…

If your air conditioner does not work, first of all make sure that the air conditioner is securely connected to the outlet. Check the circuit breaker or fuse on the supply line, if necessary restart the circuit breaker or replace the fuse. Read the user manual again and make sure all modes are set correctly.

Doing it yourself will save you money. Because in many cases the engineer you called, after doing what you can easily do yourself, will charge you for the false call.

If these steps do not help, then contact the sales organization that sold you the air conditioner. Or contact an authorized service center of the air conditioner manufacturer. Without a doubt, this is the best, fastest and most reliable way to get your air conditioner back up and running. The sales organization that sold the air conditioner should give you information on how to contact them. This information is available not only in the warranty card, but also on the manufacturer's website in the appropriate regional section.

Air conditioner test mode

To facilitate diagnostics, modern air conditioners have a so-called test mode. Compared to the operating mode, the air conditioner turns on in cooling mode and does not respond to sensor readings and air temperature. That is, in the test mode, the air conditioner will function as long as it is necessary for the service engineer to study the operation of the system units. After turning off the test mode, the air conditioner will return to normal mode work.

Samsung air conditioners also have a test mode. To enter the test mode, press the on / off button on the indoor unit and hold it for five seconds. At the same time, the temperature indicator displays the installed option. software settings with a second interval, for example, 0b0000-1730F8: 0b00001730F80b (only for models with a temperature indicator).

When testing the operation of the air conditioner, the cooling mode is switched on with the following restrictions:
- The compressor is forced to run in cooling mode without turning on/off according to the set internal temperature, without defrosting mode;
- Vane, guide air flow up/down - turn up/down mode;
- The indoor fan rotates at high speed.

AUX, DAX, Renova, JAX, Pioneer, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu(Daihatsu), Vitek, digital display for air conditioner series fault:

• Display mode = E4
• Priority level display = 1 Non-mitsubishi52_63_71he-s power supply failure = Plastic temp sensor is abnormal.
• Display mode = E1 Priority level display = 2
• Power supply failure = Copper temperature sensor abnormal (indoor) Display mode = E3 Priority level display = 3
• Power supply failure = Copper temperature sensor abnormal (open, no signal) Display mode = E2 Priority level display =
  4

2. H series, AUX, DAX, JAX, Pioneer, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu(Daihatsu), Renova (except KFR-25G/H) h3 HA HB series fault display:

1. Power supply failure = PG feedback engine abnormal
2. Priority level display = 1 Power supply failure = Plastic temp sensor abnormal Display mode = Timer LED blinks 1 time every 8 seconds
3. Priority level display = 2 Power supply failure = Copper temperature sensor abnormal (indoor) Display mode = Timer LED blinks 2 times every 8 seconds
4. Priority level display = 3 Power supply failure = Copper temperature sensor abnormal (indoor) Display mode = Timer LED blinks 1 time every 1 second
5. Priority level display = 4

3. Series H (Y) air conditioner model remote display, removable panel AUX, DAX, JAX, Pioneer, Vitek, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu:

1. Power supply failure = Motor feedback PG abnormal Display mode = Timer LED blinks 4 times every 8 seconds Priority level display = 1
2. Power supply failure = Plastic temp sensor. abnormal Display mode = Timer LED flashes 1 time every 8 seconds Priority level display = 2
3. Power supply failure = Copper temperature sensor abnormal (indoor) Display mode = Timer LED blinks 2 times every 8 seconds Priority level display = 3
4. Power supply failure = Copper temperature sensor abnormal (open, no signal) Display mode = Timer LED flashes 1 time every 1 second Priority level display = 4

4. E. E. E. EU EZ EAA EAD EL HS1 HSZ HL1 HLZ P P1 ZZ CZ digital display air conditioner series AUX, DAX, Renova, JAX, Pioneer, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu(Daihatsu), Troubleshooting:

AUX, DAX, JAX, Pioneer, Vitek, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu power supply failure = Motor feedback PG abnormal Display mode = E4 Priority level display = 1

E1 or EL - as a common nutrition mistake.

Power supply failure or, in Russian, mains voltage< 210 В (сработала защита – токовая нагрузка) = Датчик темп ненормально Режим отображения = E1 Отображение уровня приоритета = 2

E1 - pretty common mistake, just yesterday I encountered.

The reasons for E1 are obvious - insufficient voltage in the network< 210 В. При пуске компрессора происходит дополнительная просадка напряжения, токовая нагрузка max.

Power supply failure = Copper temperature sensor abnormal (indoor) Display mode = E3 Priority level display = 3

1

1

5. All other E series except EA EU E.M.E.U.Z. EAA EAD:

Power supply failure = PG motor feedback abnormal

Display mode = Timer LED blinks 4 times every 8 seconds

Priority level display = 1 Power supply failure = Plastic temp. abnormal Display mode = Timer LED blinks 1 time every 8 seconds

Priority level display = 2 Power supply failure = Copper temperature sensor abnormal (indoor) Display mode = Timer LED blinks 2 times every 8 seconds Priority level display = 3

6. QA QB QD digital display of AUX, DAX, JAX, Pioneer, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu, Vitek, Renova air conditioners - malfunctions, error codes:

• Power supply failure = PG motor feedback abnormal Display mode = E4
• Priority level display = 1 Power supply failure = Plastic temp sensor abnormal Display mode = E1
• Priority level display = 2 Power supply failure = Copper temperature sensor abnormal
• Display mode = E3 Priority level display = 3 Power supply failure = overcurrent oprotection
• Display mode = E6 Priority level display = 4

1

1

7. QC QQ light display air conditioner series fault:

• Power supply failure = PG motor feedback abnormal
• Display mode = Timer LED blinks 4 times every 8 seconds Priority level display = 1 Power supply failure = Plastic temp sensor abnormal
• Display mode = Timer LED blinks 1 time every 8 seconds Priority level display = 2 Power supply failure AUX, DAX, JAX, Pioneer, Vitek, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu = Copper temperature sensor abnormal
• Display mode = Timer LED blinks 3 times every 8 seconds Priority level display = 3 Power supply failure = over current oprotection
• Display mode = Timer LED blinks 6 times every 8 seconds Priority level display = 4

1

1

8. Display faults of 18000BTU ~ 24000BTU, AUX, DAX, JAX, Pioneer, Hansa, Saturn, Rolsen, Yamatsu, Daihatsu, Renova series - wall mounted air conditioner series:

• Numbers for digital tube displays:
• Power supply failure = PG motor feedback abnormal
• Display mode = Timer LED blinks 1 time every 8 seconds Priority level display = 2
• System errors = turns off Power supply failure = Plastic temp sensor abnormal Display mode =
• Timer LED blinks 2 times every 8 seconds Priority level display = 3 System errors = turns off
• Power supply failure = Copper temperature sensor abnormal Display mode = Timer LED blinks 8 times every 8 seconds Priority level display = 4
• System errors = not turning off Digital tube displays: Power supply failure = PG motor feedback abnormal Display mode = E1
• Priority level display = 2 System errors = turns off Power supply failure = Plastic temp sensor abnormal Display mode = E3
• Priority level display = 3 System errors = turn off Power supply failure = Copper temperature sensor abnormal Display mode = E2 Priority level display = 4
• System errors = does not turn off