Haier HSU24VHJ(DB) Service Manual

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HSU24VHJ˄DB˅ Service DiagnosisDomestic Air Conditioner577.3.5 Thermistor or Related Abnormality(outdoor unit)Frost-removing temperature sensor failureIndoor display: F21outdoor display: LED1 flash 10 times:Exhaust temperature sensor failureIndoor display: F25outdoor display: LED1 flash 13 times:Ambient temperature sensor failureIndoor display: F6outdoor display: LED1 flash 12 times:Suck temperature sensor failureIndoor display: F7outdoor display: LED1 flash 11times:Method of This type of error is detected by checking the thermistor input voltage to the microcomputer.Malfunction (A thermistor error is detected by checking the temperature)DetectionMalfunction The thermistor input is above 4.9V or below 0.1V with the power on.DecisionConditions * Note: The values may vary slightly in some modelsSupposed Faulty connector connectionCauses Faulty thermistorƵ Faulty PCBTroubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, orelse parts damage may be occurred.NOYESNOYESIs it normal?Check the connector connection.Thermistor resistance checkCorrect the connectionIs it normal? Replace the thermistorReplace the outdoor unit PCB