F17

F17 Malfunction Decision Conditions When the different between indoor intake air temperature and indoor pipe temperature is above 10°C or indoor pipe temperature is below -1.0°C. Remark: When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s). Malfunction Caused Wrong […]

F11

F11 Malfunction Decision Conditions When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused Indoor heat exchanger (pipe) thermistor 4-way valve malfunction Troubleshooting When abnormality starts again ↓ ⚠ Caution For safety reason and […]

H99

H99 Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger 2/3 way valve closed Faulty indoor unit fan motor Refrigerant shortage (refrigerant leakage) Clogged expansion valve or […]

H98

H98 Malfunction Decision Conditions Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. Phenomena: unit is stopping and re-starting very often in heating mode Malfunction Caused Indoor heat exchanger thermistor Clogged air filter or heat exchanger Over-bent pipe (liquid side) Troubleshooting When […]

H97

H97 Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused Operation stops due to short circuit inside the fan motor winding. Operation stops due to breaking of wire inside the fan motor. Operation stops due to breaking of fan motor […]

H85

H85 Malfunction Decision Conditions Initial Setting: Main PCB does not receive WLAN module data for 90 secs. Normal Control: Main PCB does not receive WLAN module data for 10 mins repeating 2 times. 5V power to WLAN module is turned off for 2s. After 2s, 5V power to WLAN module is turned on & start […]

H67

H67 Malfunction Decision Conditions nanoe stop for 5 minutes for 3 times. Malfunction Caused Faulty connector connection. Faulty indoor unit PCB. Faulty nanoe generator. Troubleshooting When abnormality indication starts again. ↓ Check the connector connection: • Turn off the power. • Check the connector connection. ⚠ Caution For safety reason and to prevent component breakdown, […]

H37

H37 Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again ↓ Check the connector connection: • Turn off the power • Check […]

H34

H34 Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again ↓ Check the connector connection: • Turn off the power • Check […]

H36

H36 Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting When abnormality indication starts again ↓ Check the connector connection: • Turn off the power • Check […]