Panasonic CS-RE9SKUA Service Manual

Also see for CS-RE12SKUA: Installation manual Operating instructions

10117.4.28 F97 (Compress or Overheating)Malfunction Decision Conditions During operation of cooling and heating, when compressor tank temperature data (233.6°F) is detected by thecompressor tank temperature sensor.Malfunction Caused Faulty compressor tank temperature sensor 2/3 way valve closed Refrigerant shortage (refrigerant leakage) Faulty outdoor unit PCB Faulty compressorTroubleshootingWhen F97 indication happens. For safety reason and to prevent componentbreakdown, always switch off the powerbefore remove and connect the component.Replace the compressor tanktemperature sensor.Repair the pipe flare or union nuts.Reclaim and recharge refrigerant.Open the 2/3 way valve.Procedure complete.Check the compressor tank temperaturesensor.Does it conform to the sensorcharacteristic chart?Check if expansion valve or strainerclogged (ice formed).Reclaim and recharge for a specifiedamount of refrigerant.2/3 way valve closed?Check for gas leakage.Oil oozing out from the 2/3 way valve?Refrigerant cycle abnormality error again?YESYESYESNONONONONOReplace expansion valve and/or strainer.Reclaim and recharge refrigerant.YESReplace outdoor unit PCB.Replace outdoor unit compressor.YES