Panasonic CS-Z35UD3RAW Service Manual

Also see for CS-Z25UD3RAW: Operating instructions

10918.4.8 H24 (Indoor Pipe Temperature Sensor 2 Abnormality)Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchangertemperature sensor 2 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 prevent componentbreakdown, always switch off the powerbefore remove and connect the component.Connector poor contact.Correct the connection.Defect in outdoor unit PCB.Replace the outdoor unit PCB.Defect in outdoor intake air temperature sensor.Replace the outdoor intake air temperaturesensor.NONOYESYESCheck the connector connection:Plug out connector from the indoor unit PCB.Is the connector connection normal?Measure the resistance of the indoor pipe temperaturesensor.Check the outdoor air temperature sensor:Is the measured resistance of the outdoor intake airtemperature sensor matches the value specified in itscharacteristic chart?Plug out connector from the outdoor unit PCB.Measure the resistance of the outdoor intake airtemperature sensor.CautionSensor (Thermistor)Characteristics706050Resistance (kΩ)Temperature °C (°F)40302010-10(14) 0(32) 10(50) 20(68) 30(86) 40(104) 50(122)01 Pipe temp. Sensor2 Intake Air Temp. Sensor12