Troubleshooting by Indication on the Remote Controller SiBE34-802180 Troubleshooting3.32 “JA” Outdoor Unit: Malfunction of High Pressure SensorRemoteControllerDisplayJAApplicableModelsRXYSQ4~6PAMethod ofMalfunctionDetectionMalfunction is detected from the pressure detected by the high pressure sensor.MalfunctionDecisionConditionsWhen the high pressure sensor is short circuit or open circuit.SupposedCauses Defect of high pressure sensor Connection of low pressure sensor with wrong connection. Defect of outdoor unit PC board.Troubleshooting∗1: Voltage measurement point∗2: Refer to “Pressure Sensor”, pressure / voltage characteristics table on P253.(V2806)CautionBe sure to turn off power switch before connect or disconnect connector,or parts damage may be occurred.Therelationshipbetween the ∗1VH and high pressureis normal (see ∗2) whenvoltage is measured betweenX17A pins (1) and (3) ofoutdoor unit PCboard (A1P)(see ∗1).Replace the high pressure sensor.Connect the high pressure sensorand turn on again.NONOReplace outdoor unit PC board(A1P).YESYESThe highpressure sensor isconnected to X17A ofoutdoor unit PCboard (A1P).
