Caution for Diagnosis SiEBE18-526244 Troubleshooting1.4 Troubleshooting with the LED on the BP UnitLEDA(H1P)LED1(H2P)LED2(H3P)LED3(H4P)LED4(H5P)(Q0395)LED-B (green)Green RedNormalDiagnosisDiagnosisAbnormalityAbnormality Check inter-unit wiringCheck inter-unit wiringLED-1 LED-2 LED-3 LED-4RedGreen Normally flashingNormally offOnNormal Check indoor or outdoor unitHigh pressure protector worked, or freeze-up in operating unit or stand-byThermistor abnorrmalityElectronic expansion valve abnormality[ Note 1 ]Notes3P058760C< If LED-A is off: >The branch provider unit PCBis faulty.< If LED-A is flashing: >The indoor unit PCB is faulty.Turn the reconnect line 2 ofall inter-unit wiring and checkthe diagnosis by LEDS onindoor unit PCB.1. Turn the power off then on again,if the LED display recurs, the branchprovider unit PCB is faulty.2. Turn the power off and then on again,if the LED display recurs, turn thepower off and disconnect line 2 ofinter-unit wiring for all units, then turnthe power on again.Power supply fault or [ Note 2 ]FlashOffIrrelevantMalfunction detectionMicrocomputer:normalLED-AIntercommunication tooutdoor unit: normal
