Haier AW09EH2VHD, Service Manual

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OUTDOOR UNIT CONTROLS and COMPONENTS PAGE 8
Outdoor Unit Introduction
The outdoor unit has two circuit boards, an Inverter Power Module (IPM) that drives the compressor and main control
board (PCB) that manages system functions and inverter calculations.
Sensors monitor key temperatures throughout the system to manage operational decisions.
4-Way Valve
Accumulator
Compressor
Defrost Temperature Sensor
Discharge Temperature Sensor
Electronic Expansion Valve
Refrigerant Strainers
Ambient Temperature Sensor
Fan Motor
Power Factor Reactor
Suction Line Temperature Sensor
Terminal Block
Main Control Board (PCB)
Module Control Board (IPM)
Fan Blade
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