ESIE09-08 Troubleshooting by Indication on the Remote ControllerTroubleshooting 1533.17 “E5” Outdoor Unit: Inverter Compressor Motor LockRemote ControlDisplayE5ApplicableModelsER*Q 011~016*Method ofMalfunctionDetectionInverter PC board takes the position signal from UVW line connected between the inverter andcompressor, and the malfunction is detected when any abnormality is observed in the phase-current waveform.MalfunctionDecisionConditionsThis malfunction will be output when the inverter compressor motor does not start up even inforced startup mode.SupposedCauses Compressor lock High differential pressure (0.5MPa or more) Incorrect UVW wiring Faulty inverter PC board Stop valve is left in closed.TroubleshootingCheck the installationconditions.Isthe stop valveopen?NOIs the UVW wiringnormal?NONONONOIs highdifferential pressure starting?(0.5MPa or more)YESYESYESCheck and seewhether compressor isshort-circuited orground.YESYESAreinverter outputvoltages the same for 3phases?Does low orhigh pressure varyeven instantaneously whenrestarting compressor?YESCautionBe sure to turn off power switch before connect or disconnect connector, orparts damage may be occurred.Open the stop valve.Connect correctly.Remedy the cause.Replace the compressor.Replace the inverter PC boardAssy (A2P).Replace the compressor.(V2793)NO
