Panasonic CS-ME5RKUA Service Manual

4712.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality)Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchangertemperature sensor are used to determine sensor errors.Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.TroubleshootingWhen abnormality indication starts again.For safety reason and to preventcomponent breakdown, always switchoff the power before remove andconnect the component.Is the measured resistance of the outdoor heat exchangertemperature sensor matches the value specified in itscharacteristic chart?Is the connector connection normal?YESYESCheck the outdoor discharge pipe temperature sensor:Plug out connector from the outdoor unit PCB.Measure the resistance of the outdoor discharge pipetemperature sensor.Check the connector connection:Turn off the power.Check the connector connection.Connector poor contact.Correct the connection.Defect in outdoor unit PCB.Replace the outdoor unit PCB.Defect in outdoor discharge pipetemperature sensor.Replace the outdoor discharge pipetemperature sensor.NONO