Daikin VRV II RXYQ5MY1B Service Manual

Also see for VRV II RXYQ10MY1B: Design, installation & testing instructions Installation manual

Contents

Daikin VRV II RXYQ5MY1B Service Manual Manual pdf 229 page image

Troubleshooting by Indication on the Remote Controller SiE39-404218 Troubleshooting2.40 “U1” Reverse Phase, Open PhaseRemoteControllerDisplayU1ApplicableModelsH3 phase outdoor unit onlyMethod ofMalfunctionDetectionDetection is based on the voltage in main circuit capacitor for inverter and supply voltage.The phase of each phase are detected by reverse phase detection circuit and right phase orreverse phase are judged.MalfunctionDecisionConditionsSupposedCauses Power supply reverse phase Power supply open phase Defect of outdoor PC board A1PTroubleshooting(V2820)Operationis normal if oneplace of power supplyline phase isreplaced.Fix the open phase. Requiresinspection of field power supplysection.Reverse phaseCounter measure of the problem iscompleted by phase replacement.Replace outdoor unit PC boardA1P.Thereis an open phaseat the power supplyterminal section (X1M)of the outdoorunit.Be sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.CautionYESYESNONO