Troubleshooting by Indication on the Remote Controller SiBE34-802192 TroubleshootingTroubleshooting∗1: Inverter’s Power Transistors Check : Refer to information on P.254~256.∗ : Refer to information on P.220.CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Have thepower supply voltagesbetween L1 and L2, L2 and L3,and L1 and L3 fallen within the range of380 to 415V±10% (50 Hz) and between Land N within the range of 220 to240V±10% (50 Hz)?Is the powertransistor faulty? YESNOYESNOYESReplace the inverter PC board(A1P).Monitor the voltage(Instantaneous voltage drop)YESNOWhen the compressor is running,measure the voltage between+ and - of electrolytic capacitor(C+, C-).Check No.3Is the resistanceabove standardvalue?Is the measured voltage220 VDC or more?(S2605)Replace the fan motorNO∗Check the inverter powertransistor. ∗1Replace the inverter PC boardassy (A2P).Check for the PC boardconditions.In case of significant failure,the PC board may have gotfaulty due to faultycompressor. Consequently,even if the PC board isreplaced, it may get faultyagain. To avoid that, recheckthe compressor forgrounding and for anybroken wires. Furthermore,even after replacing the PCboard, carry out inspectionson the compressor.Correct the power supplyvoltages.If L2 or Phase N is open,replace the switch box.Check No.3
