Коды ошибок кондиционеров

Современные кондиционеры оснащены системой самодиагностики, проверяющей работоспособность техники в автоматическом режиме. При обнаружении неисправностей прибор подает сигнал миганием светодиода или кодовым сообщением на дисплее.

В статье мы рассмотрим информацию о кодах ошибок кондиционеров, почему они могут возникнуть, основные варианты кодов поломок, как исправить.

Коды ошибок промышленных кондиционеров LG.

01 – датчик температуры воздуха короткозамкнут или обрыв в цепи;

02 – датчик температуры испарителя короткозамкнут или обрыв в цепи;

03 – плохое соединение внутреннего блока с проводным пультом управления;

04 – ошибка дренажного насоса (помпы) или поплавкового датчика уровня конденсата;

05 – ошибка в межблочном соединении внешнего и внутреннего блоков;

06 – датчик температуры наружного блока короткозамкнут или обрыв в цепи;

07 – внутренние блоки мультиситсемы включены на разные режимы работы;

HL – та же ошибка, что и 04, поплавковый датчик разомкнут;

CL – установлен детский замок, для включения нажмите Timer & Min Buttons 3 секунды;

Po – установлен режим jet cool, для выхода нажмите кнопку jet cool

21 – перегрузка компрессора по току;

22 – ток компрессора более 14 А;

23 – напряжение постоянного тока ниже 140 В; (не напряжение питания, а после модуля преобразования)

24 – ошибка по высокому/низкому давлению, датчики давления разомкнуты;

25 – напряжение питания выше/ниже нормального значения;

26 – DC Compressor Position;

27 – ошибка PSC (реактор, катушка индуктивности);

28 – DC Link High Volts;

32 – Высокая температура нагнетательной трубы (INV);

33 – Высокая температура нагнетательной трубы (Cons

40 – короткое замыкание CT;

41 – датчик температуры D-Pipe замкнут/оборван (INV);

44 – датчик температуры наружного воздуха замкнут/оборван;

45 – датчик температуры конденсатора замкнут/оборван;

46 – датчик на всасывающей трубке замкнут/оборван;

47 – D-pipe датчик замкнут/оборван;

48 – D-pipe датчик и датчик температуры воздуха отсутствуют/оборваны;

51 – комбинированная перегрузка по мощности;

52 – ошибка соединения (main micom-sub micom);

53 – ошибка соединения (внутренний-наружный блоки);

54 – для систем с 3-хфазным питанием, неправильная последовательность фаз,поменять фазу;

60 -ошибка EEPROM (внутренняя энергонезависимая память)

61 -высокая температура трубки конденсатора (конденсера)

62 -высокая температура радиатора(скорее всего имеется в виду радиатор охлаждения силового модуля инвертора)

63 -низкая температура конденсатора

65 -датчик температуры радиатора замкнут/оборван

67 -заблокирован наружный BLDC (безколлекторный электродвигатель постоянного тока) вентилятор

105 -нет связи между главной платой управления и платой управления вентилятором

Коды ошибок всех настенных кондиционеров LG, в том числе серии Art Cool

C1 или CH1 – внутренний датчик температуры воздуха короткозамкнут или обрыв в цепи;

C2 или CH2 – датчик температуры испарителя короткозамкнут или обрыв в цепи;

C4 или CH4 – температурный датчик конденсатора короткозамкнут или обрыв в цепи;

C5 или CH5 – соединение между внешним и внутренним блоками;

C6 или CH6 – превышен ток в  цепи инверторного модуля;

C7 или CH7 – превышен ток компрессора;

C8 или CH8 – не вращается вентилятор внутреннего блока;

C9 или CH9 – не вращается вентилятор внешнего блока;

C10 или CH-10 – неисправен терморезистор контроля температуры корпуса компрессора сплит системы (обрыв или короткое замыкание)

CA – температура нагнетания выше 130 0С;

CC – ошибка EEPROM (внутренняя энергонезависимая память);

CD – ошибка в инверторном модуле;

Po – система находится в энергосберегающем режиме, ошибки нет;

Lo – система находится в режиме тестирования,ошибки нет;

Система самодиагностики кондиционера

Для удобства пользователей производители оснащают кондиционеры большим набором полезных функций, одной из которых является система самодиагностики. Этот вспомогательный инструмент своевременно выявляет малейшие сбои в работе климатического оборудования и информирует о возможных неисправностях и поломках, что, в свою очередь, спасает владельца от лишних расходов на ремонт техники.

Некоторые неисправности владелец может устранить самостоятельно, другие же требуют вмешательства опытного специалиста из сервисного центра. Определить причину неисправности и необходимость вызова мастера помогут коды ошибок.

Где отображаются коды ошибок (в зависимости от модели кондиционера):

  • На дисплее прибора.
  • На пульте дистанционного управления.
  • Светодиодами на блоке. В нормальном режиме они горят ровным светом. Если в работе техники произошел сбой, светодиоды мигают с небольшими перерывами.

Для определения поломки по коду ошибки владельцу нужно изучить расшифровку символов.

Классификация кодов ошибок кондиционеров

Коды неисправностей кондиционеров классифицируются по общепринятой системе комбинирования символов и состоят из 2-3 и более знаков. Это могут быть только цифры или буквы латинского алфавита, а также комбинация из букв и 1-2 цифр.

По буквенным символам определяется место, где произошел сбой, а по цифре или количеству миганий диода можно определить, какая именно поломка произошла.

Классификация кодов ошибок:

  • Простые символьные коды.
  • 2-значные детализирующие обозначения.
  • Упрощенный 3-значный сигнал.

Владельцу прибора не нужно заучивать все символы и коды ошибок кондиционеров, тем более что в каждой марке оборудования они разные. Достаточно вовремя обратить внимание на проблему и отключить прибор от сети до выяснения причин сбоя в работе.

В инструкции по эксплуатации кондиционеров публикуется информация о кодах, что позволит владельцу определить тип и сложность поломки. Если проблему неисправности нельзя решить самостоятельно, придется вызывать мастера из сервисного центра.

Символьные коды ошибок кондиционеров

Символьные коды представлены в виде нескольких знаков, например «*». Понять ошибку в данном случае можно не по самому символу, а по их количеству. Как правило, символьные коды ошибок отображаются на пульте управления.

Двухзначные коды ошибок кондиционера

В двухзначных кодах ошибок используются латинские буквы и цифры. Первая часть кода, отображаемая буквами, отвечает за конструкционные составляющие сплит-системы.

Расшифровка символов (кратко):

  • «А» и «В» – неисправности внутреннего блока;
  • «Е», «Н», «F», «J», «L», «P» – проблемы возникли в наружном блоке;
  • «U» и «M» – эти коды сигнализируют о проблемах системы.

Второй код ошибки представлен из цифр в последовательности от 0 до 9. Для определения точной причины неполадки рекомендуется изучить инструкцию пользователя, входящую в комплектацию кондиционера.

Трехзначные коды ошибок кондиционера

В 3-значных кодах ошибок используются буквы и цифры, чаще в комбинации одного буквенного символа и двух цифр. В прилагающей инструкции есть подробная расшифровка.

Как устранить неисправности

При правильной расшифровке кодов ошибки кондиционера некоторые неисправности можно устранить самостоятельно, не прибегая к помощи специалистов. Рассмотрим самые распространенные причины неисправностей, с которыми может справиться владелец климатического оборудования.

Неисправности кондиционеров и способы устранения:

  • Загрязнение фильтров. Требуется очистка путем промывания под проточной водой.
  • Перегрев системы, связанный с загрязнением радиатора. Этот механизм также подлежит очистке от пыли и прочих загрязнений.
  • Протекает конденсат из внутреннего блока. Владельцу нужно отсоединить и прочистить сливную трубку, а после просушить и вернуть в первоначальное положение.
  • Плохое охлаждение кондиционера, спровоцированное засорением капиллярной трубки. Очистка проводится методом вакуума.
  • Загрязнен вентилятор внутреннего блока. Чистка лопастей выполняется с использованием мыльного раствора, мягкой тряпки и щетки.

Более серьезные проблемы, вызывающие сбой в работе климатического оборудования, не рекомендуется устранять самостоятельно, не имея соответствующего опыта и навыков. Ремонт и замену вышедших из строя деталей лучше доверить квалифицированным специалистам из сервисного центра.

Все коды ошибок кондиционеров LG

Код неисправности
Расшифровка кода ошибки

00
Text the 1, 2 or 3 digit fault code number only. If you see fault code CH07 on your indoor unit or R/Controller, only type 7 or 07 in your text message. 01
Indoor unit return air sensor fault. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor

1
Indoor unit return air sensor fault. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor

02
Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. 2
Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. 03
Remote controller comms error. Check wired correctly, if so check dipswitch in RC. Set to Sg for 1 unit, or Gr for group then reset power

3
Remote controller comms error. Check wired correctly, if so check dipswitch in RC. Set to Sg for 1 unit, or Gr for group then reset power

04
RAC Product = Heat Sink Sensor Error, Open/Short Cct or over 95C. Commercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. 4
RAC Product = Heat Sink Sensor Error, Open/Short Cct or over 95C. Commercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. 05
Comms Error, check your wiring, remove external pumps. Split/Multi – check volts from terminal N to 3 = 0 – 65 Vdc, Multi V – 4 Vdc terminals 3 and 4

5
Comms Error, check your wiring, remove external pumps. Split/Multi – check volts from terminal N to 3 = 0 – 65 Vdc, Multi V – 4 Vdc terminals 3 and 4

06
Indoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10C and 4 kOhm at 30C. if not replace sensor. Split = text 21

6
Indoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10C and 4 kOhm at 30C. if not replace sensor. Split = text 21

07
Multi Splits and Multi V = indoor unit is set to run in a different mode from the master indoor unit. Set ALL indoor units to cooling or ALL to heating to clear. Splits = Compressor Over Current (CT2), also see Code 06. 7
Multi Splits and Multi V = indoor unit is set to run in a different mode from the master indoor unit. Set ALL indoor units to cooling or ALL to heating to clear. Splits = Compressor Over Current (CT2), also see Code 06. RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. 08
Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. If no

Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. 8
Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. If no

Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. 09
Split = Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. Multi V = Indoor unit EEPROM error – Replace the indoor unit PCB, and then make sure to do Auto addressing and input the address of central control. 9
Split = Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. Multi V = Indoor unit EEPROM error – Replace the indoor unit PCB, and then make sure to do Auto addressing and input the address of central control. 10
RAC Product: Compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C, 168 kOhm at 30C. Multi Fdx & Multi V text 8

11
Multi V indoor unit not connected to an outdoor unit. Check comms wiring is correct, and check initialisation has been carried out correctly

12
RAC Product = EEPROM Sum Check Error, text 60 for help. 13
RAC Product = PSC (Reactor) Error, text 27 for help. 14
RAC Product = Compressor Phase Current Error

15
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

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16
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

17
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

18
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

19
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

20
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

21
Inverter compressor run current high. Check compressor windings all equal 1 to 4 Ohms, Check to earth 50 MOhm minimum, check run current

22
Inverter compressor run current high. Check compressor windings all equal 1 to 4 Ohms. Check to earth 50 MOhm minimum, check run current

23
Inverter dc voltage low. Check dc voltage of capacitors 300 Vdc for 1Ph and 600 Vdc for 3Ph. If OK change outdoor inverter PCB

24
Splits and Multi Splits = High or low pressure trip. Low at 1 bar High at 35 bar check pressures. Multi V = High pressure trip. 25
Check power supply voltage to the outdoor unit is correct (1ph ?220 Vac ±10% or 3ph ?380 Vac ±10%). If OK, check fuses, if fuses are OK replace outdoor main PCB

26
Inverter compressor seized. Check compressor windings all equal resistance 1 to 4 Ohms, check to earth 50 MOhm minimum, check run current and Inverter outputs

27
Inverter current irregularity. Check inverter PCB, check reactor connections and its resistance is less than 1 ohm. 28
Inverter dc voltage too high. Check dc voltage of capacitors 300 Vdc for 1Ph and 600 Vdc for 3Ph. If OK change outdoor inverter PCB

29
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

30
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

31
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

32
Inverter compressor discharge temperature too high. If over 105°C, check refrigerant charge

33
Excessive rise of standard compressor discharge temperature. If over 105°C check refrigerant charge

34
Excessive high pressure rise, over 35 bar at HP sensor. Check pressures, check coils, and filters are clean check for OFN in system pipework

35
Excessive low pressure drop under 1 Bar at LP sensor. Check pressures, and check service valves open

36
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

37
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

38
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

39
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

40
Inverter ac current abnormal. Check compressor windings all equal resistance 1 to 4 Ohms, check to earth 50 MOhm minimum, check run current and inverter outputs

41
Inverter compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. 42
Low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar

43
High pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2. 5 Vdc = 37 bar

44
Outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C. If OK replace PCB, if not replace sensor

45
Outdoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

46
Outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

47
Compressor discharge sensor fault. Disconnect from PCB measure resistance. 237 kOhm at 20°C and 168 kOhm at 30°C. If OK replace PCB, if not replace sensor

48
Split/Multi Split = Outdoor unit discharge and air sensor both unplugged. Multi V = Outdoor unit coil sensor. Text 45 for diagnostics

49
Check power supply voltage to the outdoor unit is correct (1ph ?220 Vac ±10% or 3ph ?380 Vac ±10%). If OK check fuses, if fuses OK, replace outdoor main PCB

50
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

51
Unit mismatch. Check model number of units do not exceed maximum. Multi V – also check Sub outdoor unit dipswitch settings

52
Communication error between inverter PCB and main outdoor unit PCB. Check wiring fuses and LEDs. If OK either inverter or main PCB defective

53
Comms error indoor to outdoor unit. Check your wiring. Split and Multi – check voltage from terminal N to 3 = 0 – 65 Vdc, Multi V – 4 Vdc terminals 3 and 4

54
Reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault

55
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

56
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

57
Comms error between outdoor main PCB and inverter PCB. Check wiring fuses and LEDs are lit. If OK either inverter or main PCB defective

58
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

59
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

60
Outdoor unit PCB EEPROM failure, try removing EEPROM and refitting if removable (possible contact fault), otherwise replace PCB if the EEPROM is non-removable. 61
Condenser coil over 65°C. Check coil and filters are clean and free from debris, and airflow is OK. Check system pressures for non-condesables

62
Inverter over 85°C. Check air flow across heat sink, check inverter tight to heatsink use thermal paste. Multi V – check inverter cooling fan

63
Multi F(DX) – “Cond. Pipe Sensor Temp. Low” (opposite to Error Code 61). Check Temperature/Resistance reading and replace sensor if found to be faulty. If sensor okay, check for cause of low temperature and rectify. 64
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

65
Outdoor unit inverter fin temperature sensor fault. Disconnect from PCB measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C

67
Outdoor Fan Motor siezed, or rotation sensing circuit failure. Check motor for mechanical and/or electrical failure, if okay replace pcb. 100
Excessive discharge temperature rise 105°C Sub condenser 1 standard compressor. Check refrigerant

101
Excessive discharge temperature rise 105°C Sub condenser 1 standard compressor. Check refrigerant

102
Excessive discharge temperature rise 105°C Sub condenser 2 standard compressor. Check refrigerant

103
Excessive discharge temperature rise 105°C Sub condenser 2 standard compressor. Check refrigerant

104
Communication error between Main and Sub outdoor units. Check comms wiring and power to all outdoor units

105
Communication error between outdoor main PCB and fan PCB. Check plug connections and LEDs. If OK, replace either main or fan PCB

106
Outdoor unit fan motor high current. Check fans rotate freely, and are connected correctly

107
Outdoor unit low voltage to fan PCB. Check 300 Vdc supply, check fuses and plug connections. If OK, replace fan PCB

108
Communication error between outdoor main PCB, and fan PCB. Check plug connections and LEDs. If OK replace either main or fan PCB

109
Sub 1 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

110
Sub 1 reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault

111
Communication error between Main and Sub outdoor units. Check comms wiring and power to all outdoor units

113
Main outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

114
Main outdoor unit Subcool inlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

115
Main outdoor unit Subcool outlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

116
Sub 1 high pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2. 5 Vdc = 37 bar

117
Sub 1 low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar

118
Sub 1 outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C. If OK replace PCB, if not replace sensor

120
Sub 1 outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. if not replace sensor

121
Sub 1 compressor 1 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. if not replace sensor

122
Sub 1 compressor 2 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. if not replace sensor

123
Sub 1 outdoor unit coil sensor A fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

124
Sub 1 outdoor unit coil sensor B fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

125
Sub 1 outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

126
Sub 1 outdoor unit Subcool inlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

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127
Sub 1 outdoor unit Subcool outlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

128
Sub 2 high pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2. 5 Vdc = 37 bar

129
Sub 2 low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar

130
Sub 2 outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C. If OK replace PCB, if not replace sensor

132
Sub 2 outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. if not replace sensor

133
Sub 2 compressor 1 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168kOhm at 30°C. if not replace sensor

134
Sub 2 compressor 2 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168kOhm at 30°C. if not replace sensor

135
Sub 2 outdoor unit coil sensor A fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

136
Sub 2 outdoor unit coil sensor B fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

137
Sub 2 outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

138
Sub 2 outdoor unit Subcool inlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

139
Sub 2 outdoor unit Subcool outlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

140
Sub 2 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

141
Sub 2 reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault

142
Communication error between Main and Sub outdoor units. Check comms wiring and power to all outdoor units

143
Sub 1 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

144
Sub 1 excessive drop of low pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

145
Sub 2 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

146
Sub 2 excessive drop of low pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

147
Sub 1 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB

148
Sub 1 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB

149
Sub 2 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB

150
Sub 2 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB

151
Faulty 4 way valve. Check solenoid coil and output from PCB. If OK, mechanical failure. 152
Excessive discharge temperature rise 105°C Sub condenser 2 standard compressor. Check refrigerant

153
Excessive discharge temperature rise 105°C Sub condenser 2 standard compressor. Check refrigerant

154
Sub 3 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

155
Sub 3 reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault

156
Communication error between Main and Sub outdoor units. Check comms wiring and power to all outdoor units

157
Sub 3 high pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2. 5 Vdc = 37 bar

158
Sub 3 low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar

159
Sub 3 outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C. If OK replace PCB, if not replace sensor

161
Sub 3 outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. if not replace sensor

162
Sub 3 compressor 1 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. if not replace sensor

163
Sub 3 compressor 2 discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C and 168 kOhm at 30°C. if not replace sensor

164
Sub 3 outdoor unit coil sensor A fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

165
Sub 3 outdoor unit coil sensor B fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

166
Sub 3 outdoor unit liquid pipe sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

167
Sub 3 outdoor unit Subcool inlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

168
Sub 3 outdoor unit Subcool outlet sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C

169
Sub 3 excessive rise of high pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

170
Sub 3 excessive drop of low pressure. Check pressures, check for non condensables, check heat exchanger coil is free from debris

171
Sub 3 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB

172
Sub 3 check power supply voltage to the outdoor unit is correct (1ph 220 Vac ±10% or 3ph 380 Vac ±10%). check fuses, if fuses OK replace outdoor main PCB

173
Main outdoor unit standard compressor not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty

174
Sub 1 standard compressor 1 not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty

175
Sub 1 standard compressor 2 not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty

176
Sub 2 standard compressor 1 not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty

177
Sub 2 standard compressor 2 not starting. Check output from main PCB, check contactor, and check wiring connections. If OK compressor faulty

204
Comms Error between Outdoor Unit and HR Box No1. Defective connection in HR unit power supply and transmission connection 2. Wrong setting of the HR unit Rotary switch and Dip switch 3. Defective HR unit PCB

208
Comms Error between Outdoor Unit and HR Box No2. Defective connection in HR unit power supply and transmission connection 2. Wrong setting of the HR unit Rotary switch and Dip switch 3. Defective HR unit PCB

212
Comms Error between Outdoor Unit and HR Box No3. Defective connection in HR unit power supply and transmission connection 2. Wrong setting of the HR unit Rotary switch and Dip switch 3. Defective HR unit PCB

240
Central controller wiring error. Check all comms wiring, including between controller and CNU, and IP addresses. If OK possible defective CNU

241
Central controller data sending error. Either defective CNU or Central controller initialisation failure

242
Central controller data receiving error. Either defective CNU or Central controller initialisation failure

243
Central controller. Comms cable too long or picking up external electrical noise. If OK, mismatching of controllers, or defective CNU

244
Central controller data receiving time out. Either defective CNU or Central controller initialisation failure

245
Central controller data sending time out. Either defective CNU or Central controller initialisation failure

246
Central controller data receiving time out. Either defective CNU or Central controller initialisation failure

250
Central controller data receiving error. Either comms cable picking up external electrical noise, or defective CNU

251
Central controller receiving no data. Either comms cable picking up external electrical noise, or defective CNU

252
Central controller incorrect address error. Check addresses match, if OK either comms cable picking up external electrical noise, or defective CNU

253
Central Controller Disconnection Error, No response from Air Conditioner. Check wiring, if OK either comms cable picking up external electrical noise, defective CNU, or Interface. C1
Indoor unit return air sensor fault, Open or Short. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor

C2
Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. C4
RAC Product = Heat Sink Sensor Error, Open/Short Cct or over 95C. Commercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. C5
Comms Error, check your wiring, remove external pumps. Split/Multi – check volts from terminal N to 3 = 0 – 65 Vdc, Multi V – 4 Vdc terminals 3 and 4

C6
Inverter compressor run current high. Check compressor windings all equal 1 to 4 Ohms, Check to earth 50 MOhm minimum, check run current

C7
Splits = Compressor Over Current (CT2), also see Code 06. RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. C8
Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. If no

Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. C9
Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. CA
Compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C, 168 kOhm at 30C. CC
RAC Product = EEPROM Sum Check Error, text 60 for help. Cd
RAC Product = PSC (Reactor) Error, text 27 for help. CE
RAC Product = Compressor Phase Current Error

CH00
Text the 1, 2 or 3 digit fault code number only. If you see fault code CH07 on your indoor unit or R/Controller, only type 7 or 07 in your text message. CH01
Indoor unit return air sensor fault. Disconnect sensor from PCB and measure resistance. 8 kOhm at 30C and 13 kOhm at 20C if not replace sensor

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CH02
Indoor Pipe Sensor or Outdoor Sensor Assy fault, Open or Short. Disconnect from PCB and measure resistance. Air sensor = 10 kOhm at 25C, Pipe sensor = 5 kOhm at 25C. If not replace sensor. CH03
Remote controller comms error. Check wired correctly, if so check dipswitch in RC. Set to Sg for 1 unit, or Gr for group then reset power

CH04
RAC Product = Heat Sink Sensor Error, Open/Short Cct or over 95C. Commercial Product = Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. CH05
Comms Error, check your wiring, remove external pumps. Split/Multi – check volts from terminal N to 3 = 0 – 65 Vdc, Multi V – 4 Vdc terminals 3 and 4

CH06
Indoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10C and 4 kOhm at 30C. if not replace sensor. Split = text 21

CH07
Multi Splits and Multi V = indoor unit is set to run in a different mode from the master indoor unit. Set ALL indoor units to cooling or ALL to heating to clear. Splits = Compressor Over Current (CT2), also see Code 06. RAC Indoor unit BLDC Fan problem. This is caused by the Indoor fan being locked. Check fan motor is plugged in correctly, Electrically & Mechanically sound. CH08
Check the fan motor turns freely, check the AC Voltage supplied to the fan motor, this will vary from 120 V ac at low speed to 170V AC at high speed. If no

Voltage is present the the PCB is faulty, if Voltage is present the fan motor will be Faulty. CH09
Split = Outdoor unit fan problem. Check Outdoor fan motor is plugged in, Electrically & Mechanically sound, if not replace motor, otherwise replace PCB. Multi V = indoor PCB failure. Replace PCB

CH10
RAC Product: Compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20°C, 168 kOhm at 30C. Multi Fdx & Multi V text 8

CH11
Multi V indoor unit not connected to an outdoor unit. Check comms wiring is correct, and check initialisation has been carried out correctly

CH12
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH13
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH14
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH15
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH16
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH17
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH18
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH19
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH20
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH21
Inverter compressor run current high. Check compressor windings all equal 1 to 4 OhmsCheck to earth 50 MOhm minimum, check run current

CH22
Inverter compressor run current high. Check compressor windings all equal 1 to 4 Ohms. Check to earth 50 MOhm minimum, check run current

CH23
Inverter dc voltage low. Check dc voltage of capacitors 300 Vdc for 1Ph and 600 Vdc for 3Ph. If OK change outdoor inverter PCB

CH24
Splits and Multi Splits = High or low pressure trip. Low at 1 bar High at 35 bar check pressures. Multi V = High pressure trip. CH25
Check power supply voltage to the outdoor unit is correct (1ph ?220 Vac ±10% or 3ph ?380 Vac ±10%). If OK, check fuses, if fuses are OK replace outdoor main PCB

CH26
Inverter compressor seized. Check compressor windings all equal resistance 1 to 4 Ohms, check to earth 50 MOhm minimum, check run current and Inverter outputs

CH27
Inverter current irregularity. Check inverter PCB and reactor

CH28
Inverter dc voltage too high. Check dc voltage of capacitors 300 Vdc for 1Ph and 600 Vdc for 3Ph. If OK change outdoor inverter PCB

CH29
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH30
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH31
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH32
Inverter compressor discharge temperature too high. If over 105°C, check refrigerant charge

CH33
Excessive rise of standard compressor discharge temperature. If over 105°C check refrigerant charge

CH34
Excessive high pressure rise, over 35 bar at HP sensor. Check pressures, check coils, and filters are clean check for OFN in system pipework

CH35
Excessive low pressure drop under 1 Bar at LP sensor. Check pressures, and check service valves open

CH36
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH37
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH38
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH39
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH40
Inverter ac current abnormal. Check compressor windings all equal resistance 1 to 4 Ohms, check to earth 50 MOhm minimum, check run current and inverter outputs

CH41
Inverter compressor discharge sensor fault. Disconnect from PCB measure resistance 237 kOhm at 20C and 168 kOhm at 30C. CH42
Low pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 4 bar up to 5 Vdc = 32 bar

CH43
High pressure sensor fault. Check dc voltage between white and black cable on plug. Multi V: 1 Vdc = 8 bar up to 2. 5 Vdc = 37 bar

CH44
Outdoor unit air sensor fault. Disconnect from PCB and measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C. If OK replace PCB, if not replace sensor

CH45
Outdoor unit coil sensor fault. Disconnect from PCB measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

CH46
Outdoor unit suction sensor fault. Disconnect from PCB and measure resistance. 10 kOhm at 10°C and 4 kOhm at 30°C. If OK replace PCB, if not replace sensor

CH47
Compressor discharge sensor fault. Disconnect from PCB measure resistance. 237 kOhm at 20°C and 168 kOhm at 30°C. If OK replace PCB, if not replace sensor

CH48
Split/Multi Split = Outdoor unit discharge and air sensor both unplugged. Multi V = Outdoor unit coil sensor. Text 45 for diagnostics

CH49
Check power supply voltage to the outdoor unit is correct (1ph ?220 Vac ±10% or 3ph ?380 Vac ±10%). If OK check fuses, if fuses OK, replace outdoor main PCB

CH50
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH51
Unit mismatch. Check model number of units do not exceed maximum. Multi V – also check Sub outdoor unit dipswitch settings

CH52
Communication error between inverter PCB and main outdoor unit PCB. Check wiring fuses and LEDs. If OK either inverter or main PCB defective

CH53
Comms error indoor to outdoor unit. Check your wiring. Split and Multi – check voltage from terminal N to 3 = 0 – 65 Vdc, Multi V – 4 Vdc terminals 3 and 4

CH54
Reverse or open phase. Check all 3 phases are present and correct. If correct voltage appears at all three phases, swap any two to cure the fault

CH55
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH56
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH57
Comms error between outdoor main PCB and inverter PCB. Check wiring fuses and LEDs are lit. If OK either inverter or main PCB defective

CH58
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH59
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH60
Outdoor unit PCB EEPROM failure, try removing EEPROM and refitting if removable (possible contact fault), otherwise replace PCB if the EEPROM is non-removable. CH61
Condenser coil over 65°C. Check coil and filters are clean and free from debris, and airflow is OK. Check system pressures for non-condesables

CH62
Inverter over 85°C. Check air flow across heat sink, check inverter tight to heatsink use thermal paste. Multi V – check inverter cooling fan

CH63
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH64
no such fault code Text 1, 2 or 3 digit fault code number only. If you see fault code CH07 only type 7 in your text message

CH65
Outdoor unit inverter fin temperature sensor fault. Disconnect from PCB measure resistance. 8 kOhm at 30°C and 13 kOhm at 20°C

CH67
Outdoor Fan Motor siezed, or rotation sensing circuit failure. Check motor for mechanical and electrical failure. CL
CL = Child Lock. Press Timer & Min buttons simultaneously for 5 seconds to engage/disengage function. help
Text the 1, 2 or 3 digit fault code number only. If you see fault code CH07 on your indoor unit or R/Controller, only type 7 or 07 in your text message. HL
Condensate pump float switch risen. Check drain pan is empty, check pump is working OK. If no pump check blue jumper plug is inserted in socket CN Float. Alternatively, Dry Contact Interface is in “OFF” condition. Check status and adjust as necessary. Po
Po = Jet Cool Mode selected. To cancel press Jet Cool, Fan Speed or Set Temperature button.

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