Haier AS12NB1HRA-White Service Manual

Also see for AS07BS4HRA: Operation manual and installation guide

Contents

Circuit diagramsDomestic air conditioner11.4.12 High work-intense protectionElectrify the machine again and turn it on with theremote controller, check whether the windtemperature is below 65The malfunction is reportedafter the machine has runfor some time?1 Check room temperature andpipe temperature sensor.2 the 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 above65 twice in 30 minutes.Faulty electronic expansion valveDirty heat exchangerFaulty heat-exchange sensorInsufficient gasSupposed causes* CautionBe sure to turn off power switch before connect or disconnect connector, or elseparts damage may be occurred.LED1 flash 21 timesOutdoor diplay59