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Wiring Diagram for Heat Pump System
AC_ IN
Power Supply
AC_ IN
O/B relay
Emergency relay
Auxiliary hea ng relay
1st Compressor Relay
2nd Compressor Relay
Fan relay
MCU
Heat Pump
21
Rc
Jumper Wire
RH
Changeover Valve
O/B
Emergency
E
Aux Hea ng
W
1st Compressor
Y
2nd Compressor
Y2
FAN
G
C
L
FAULT DETECT
Transformer
24VAC
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