Outdoor Unit Introduction; Outdoor Component Identification - Haier HSU09VHG(DB)-W Service Manual

The outdoor condensing unit models are heat pump systems. The outdoor unit has two circuit boards, a Module board that
drives the compressor and a Main Control Board that manages system functions and inverter calculations. Temperature
sensors monitor key temperatures throughout the system to manage operational decisions.
4-Way Valve
1
Accumulator
2
Compressor
3
Defrost Temperature Sensor
4
Discharge Temperature Sensor
5
Electronic Expansion Valve
6
Refrigerant Filters
7
Outdoor Ambient Temperature Sensor
8
Outdoor Fan Motor
9
Power Factor Reactor
10
Suction Line Temperature Sensor
11
Terminal Block
12
Main Control Board
13
Module Control Board
14
Fan Blade
15
PAGE 8

Outdoor Unit Introduction

Outdoor Component Identification
9
15
10
OUTDOOR UNIT CONTROLS & COMPONENTS
14
3
2
4
13
12
5
1
6
11
7
8