E1Indoor room temperature sensor failureIndoor room temp. sensor in short circuit, or open circuit, it can resume due to the signal.
E2Indoor coil temperature sensor failureIndoor coil temp. sensor in short circuit, or open circuit, it can resume due to the signal.
E4EEPROM wrongBeing electrified to test E2 check sum, or E2 is broken down.
E7Communication failure between indoor and outdoorCommunication failure alarms for 4 minutes contineously, it can resume due to the signal.
E14Indoor fan motor failureIndoor fan motor wrong wiring or indoor fan motor abnormal.
E18Temperature cutoff protectionOutdoor 4-way valve response abnormal.
F1Module failureOutdoor module abnormal
F2Outdoor DC motor failureOutdoor DC motor abnormal
F4Compressor overheat / discharging temperature protectionCompressor discharging temperature over high protection
F5Module over current / current transducer failure
F6Outdoor ambient temp. sensor abnormalOutdoor ambient temp. sensor in short current or open circuit
F7Outdoor suction/defrosting temp. sensor abnormalOutdoor suction/defrosting temp. sensor in short circuit or open circuit
F8High pressure abnormalHigh pressure too high
F9Low pressure abnormalLow pressure abnormal
F10No AC power supply
F11Outdoor PCB EEPROM abnormalBeing electrified to test if the E2 check sum is correct or failure
F13Communication failure between outdoor PCB and module
F14Compressor discharging temp. sensor failureOutdoor compressor discharging temp. sensor in short circuit or open circuit
F15Compressor running faultyResumable
F16Running state-detecting circuit failureOutdoor DC compressor running state-detecting circuit failure, or compressor abnormal, resumable
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