SiUS12-814 TroubleshootingService Diagnosis 1295.12 Compressor LockRemoteControllerDisplayE6Outdoor Unit LEDDisplayA 5 1 1 2 4 3 4 4 1Method ofMalfunctionDetectionA compressor lock is detected by checking the compressor running condition through the positiondetection circuit.MalfunctionDecisionConditions Judging from current waveform generated when high-frequency voltage is applied to thecompressor. The system will shut down if the error occurs 16 times. Clearing condition: Continuous run for about 5 minutes (normal)SupposedCauses Compressor lockedTroubleshootingTurn off the power. Disconnect theharnesses U, V and W.(R8371)CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.NOYESYESNONOYESCheck with the inverter checker (∗).Turn off the power and reconnectthe harnesses. Turn on the poweragain and get the system restarted.(Precaution before turning on the power again)Make sure the power has been off for at least 30 seconds.Correct the power supply orreplace the PM1 or SPM.(Replace the outdoor unitPCB.)∗ Inverter checkerPart No.: 1225477Replace the compressor.Replace it as required.Replace the compressor.Check the electronicexpansion valve.Normal?Emergencystop without compressorrunning?System shutdown after errors repeatedseveral times?
