Haier H2SM-(9+12)HEK03/R2 Service Manual
Also see for H2SM-(9+12)HEK03/R2: Operation manualInstallation manualOperation manualOperation manual
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Contents
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H2SM-(9+12)HEK03/R2 Service DiagnosisDomestic Air Conditioner497.4. Trouble Shooting7.4.1 Thermistor or Related Abnormality (indoor unit)Indoor Display E1:Room temperature sensor failureE2:Indoor heat-exchange sensor failureMethod of MalfunctionDetection The temperatures detected by the thermistors are used to determine thermistor errorsMalfunction DecisionConditionsWhen the thermistor input is more than 4.92V or less than 0.08V during compressoroperation. (* Note: The values vary slightly in some models)Supposed CausesFaulty connector connectionFaulty thermistorFaulty PCB* CautionBe sure to turn off power switch before connect or disconnect connector, or else parts damagemay be occurred.whether terminal CN8 onindoor PCB contact wellt?Pull out the terminals on the indoormainboard and reinsert themPull the sensor out of the mainboard1)Measure the value of resistanceBetween its two jumpers2)Measure the temperature at theroom temperature sensing head.Check the value of the sensor to seewhether the sensor is damaged or not?The indoor PCB is broken, replacewith new indoor PCBSensor is broken,replace it with newsensorYESYESNONO |
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