msz-gc35va

2. Indoor unit failure mode tableUpper lamp of OPERATIONINDICATOR lampAbnormal point(Failure mode)ConditionCorrespondenceNot lighted Normal ——1-time flashevery 0.5-secondRoom temperaturethermistorThe room temperature thermistor shortor open circuit is detected every 8 secondsduring operation.Refer to the characteristics of the roomtemperature thermistor (10-7.).2-time flash2.5-second OFFIndoor coil thermistorThe indoor coil thermistor short or opencircuit is detected every 8 seconds duringoperation.Refer to the characteristics of the mainindoor coil thermistor, the sub indoor coilthermistor (10-7.).3-time flash2.5-second OFFSerial signalThe serial signal from outdoor unit isnot received for 6 minutes.Refer to 10-6.D "How to check mis-wiringand serial signal error".11-time flash2.5-second OFFIndoor fan motorThe rotational frequency feedback signal isnot sent out for 12-seconds after indoor fanmotor is opeated.Refer to 10-6.A "Check of indoor fanmotor".12-time flash2.5-second OFFIndoor control systemIt cannot properly read data in thenonvolatile memory of the indoor electroniccontrol P.C. board.Replace the indoor electronic controlP.C. board.NOTE : Blinking patterns of this mode differ from the ones of Troubleshooting check table (10-4.).16