  Circuit diagrams                                                                       Domestic air conditioner 11.4.12 High work-intense protectionElectrify the machine again and turn it on with theremote controller, check whether the windtemperature is below 65ćThe malfunction is reportedafter the machine has runfor some time?1 ǃ Check room temperature andpipe temperature sensor.2ǃthe temperature monitoring circuitof the indoor mainboardThe indoor unit blows poorlydue to blocked filters or poorcondition of the fan?1) Clean the filters2) Reinstall the fan.Use some tools to measure the pressure of systemYESNOYESNOMethod ofmalfunction detectionMalfunction detectionconditionsTroubleshootingHigh work-intense control is activated in the heating mode if the temperature beingsensed by the heat exchanger thermistor exceeds the limit.Activated when the temperature being sensed by the heat exchanger rises above65ć twice in 30 minutes.ŶFaulty electronic expansion valveŶDirty heat exchangerŶFaulty heat-exchange sensorŶInsufficient gasSupposed causes* CautionBe sure to turn off power switch before connect or disconnect connector, or elseparts damage may be occurred.LED1 flash 21 timesOutdoor diplay44

Haier AS53HE1HRA Service Manual

operation manual

PARTS AND FUNCTIONS

OPERATION

quiet operation

health operation

timer operation

smart operation

test operation

MAINTENANCE

CAUTIONS

TROUBLE SHOOTING

AS53HE1HRA

AS71NE1HRE

N-Series