Haier HCFU-18CF03 Operation And Installation Manual

Also see for HCFU-18CF03: Manual Service manual

9Before ask for services, please first check your unit against the following.Air conditioner won't start.Poor cooling or heatingIs power supply switchturned on?Power supply switchis not set at ON.Is city power supply normal? Is leakage current breakeractivated?This is very dangerous, pleasedisconnect power supplyimmediately and contact yourdealer.Are operation controladjusted correctlyas specified?Is air filter too dirty? Are there any obstacles in inletor outlet grill?Are horizontal louvers at upposition (in heating mode)?Any doors or windows leftopen?Is there any direct sunlightin the room?If there are unexpected heatsources in the room?Too many people in the room?Poor coolingIs air conditioner in standbycondition in heating mode?Cold air blows out(in heating mode) If your unit still can't work properly after above mentionedchecks, or following problems occur, please stop it immediatelyand contact your dealer.Fuses or circuit breakers often blow out.Water comes out in cooling/dry operation.Operation is abnormal or sound is heard.Trouble ShootingFailure descriptionRoom temp. sensor abnormalIndoor coil temp. sensor abnormalOutdoor coil temp. sensor abnormalOver-current malfunctionCommunication malfunction between indoor and wired controllerCommunication malfunction between indoor and outdoor abnormalCoil gas pipe temp. Sensor abnormalFlash times of indoor receiver boardPower LED flashes 1 timePower LED flashes 2 timesPower LED flashes 3 timesPower LED flashes 4 timesPower LED flashes 5 timesPower LED flashes 16 timesPower LED flashes 8 timesPower LED flashes 9 timesPower LED flashes 12 timesOutdoor temp. sensor abnormalHigh / Low pressure abnormalTemperature protection malfunction Power LED flashes 13 timesDrainage system malfunction Power LED flashes 10 timesAlarm of exterior annunciator Power LED flashes 11 timesPropertempPowerfailure?