Haier HDU-28CF03, HDU-18HF03, HDU-18CF03 installation manual Malfunction

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Malfunction

Failure description	Code on wired controller

Room temp. sensor abnormal	E1

Indoor coil temp. sensor abnormal	E2

Outdoor temp. sensor abnormal	E3

Outdoor coil temp. sensor abnorma	E4

Over-current malfunction	E5

High / Low pressure abnormal	E6

Communication malfunction between indoor PCB and panel	E8

Communication malfunction between indoor PCB and outdoor PCB	E9

The float switch malfunction	E0

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Contents Duct Type AIR Conditioner Table of Contents Disposal of the old air conditioner Make sure the system is grounded Safety PrecautionsDo not wash the air conditioner with water Cooling Rated Maximum Minimum IndoorOutdoor Heating IndoorParts and Functions Parts and Functions Operation Power ON/OFFCool Fan operation Auto RUN, COOL,HEAT and DRY operation 2TIMER mode selection 1After unit start, select your desired operation mode3Timer setting 4Confirming your setting3Time setting for Timer on Press Timer button to change Timer modeTime confirming for Timer on 5Time setting for Timer OFFCooling, dehumidifying mode Heating mode This series changeover switch is set 1. on 2.OFF 3.OFF 4.OFF Unit fails to start MalfunctionMalfunction Followings are not malfunction Points to observe Care and MalntenanceFor Preparation of HeatingHot Keep When heating is startedInstallation place Is The Unit Installed CorrectlyInstall wire controller Installation Manual For Wire ControllerIndoor unit wiring Safety precautions Installation Manual For Indoor UnitIndoor unit Installation Manual For Indoor Unit Sketch map of long duct Thermal insulation of duct Installation of air sending ductInstallation of air return duct Foundation bolt Hose RequirementsPipe and insulation material Connection of refrigerant pipe Allowable pipe length and drop Pipe material and sizeSupplementary refrigerant Gas leakage detection Vacuum pumpingOpen all valves Electric wiring Haier Group