Haier H-MRV Series Service Manual
Also see for H-MRV AB092FCBHA: Service manualUser manual
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6. Discharging temperature protectionno Open the stop valve11 flashes of outdoor ALARM light; fault readout: 11When is temperature protection activated: Temperature ofdischarge line is above 115° C.Replace TD sensoryescleaningreplace PCBAre stop valves in gas pipe and liquidpipe of outdoor unit open totally?yesDoes EEV work properly during heating cycle?Check 1) Connector 2) Winding resistance 3)Valve 4) MainboardnoyesRepair outdoor EEVIs actual discharging temperature detectedby thermometer too high?yesDoes indoor fan work properly during heatingcycle? Does outdoor fan work properly duringcooling cycle?Is discharging temperaturesensor in good condition?no nonoCheck fan motor and capacitoryesyesIs filter or heat exchanger dirty?noMeasure balance pressure and runningpressure to see if the refrigerant is too much orlack. Is there air in system? Is there a leak?Conduct leak test.Evacuate and rechargeyesnoIs piping twisted or deformed? Is pipingclogged with weld?yes Adjustment orreplacementnoWhen TD is high, is refrigerant injectioncircuit in good condition? Is injectioncapillary in good condition?no1.Check coil and valve body ofelectromagnetic valve.2.Check injection capillary.-174- |
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