Si34-603 Troubleshooting by Indication on the Remote ControllerTroubleshooting 1493.16 “E4” Outdoor Unit: Actuation of Low Pressure SensorRemoteControllerDisplayE4ApplicableModelsRXYMQ4~6PMethod ofMalfunctionDetectionAbnormality is detected by the pressure value with the low pressure sensor.MalfunctionDecisionConditionsError is generated when the low pressure is dropped under specific pressure.Operating pressure:0.07MPaSupposedCauses Abnormal drop of low pressure (Lower than 0.07MPa) Defect of low pressure sensor Defect of outdoor unit PC board Stop valve is not opened.