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OUTDOOR UNIT CONTROLS and COMPONENTS
PAGE
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.
Sensor
s
monitor
key
temperatures
throughout
the
system
to
manage
operational
decisions.
4-Way
Valve
Accumulat
or
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
8
4
6
11
12
13
14
1
3
2
7
5
9
10
15
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