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12
1H/1C Heat Pump (no auxiliary heat) 2H/2C Heat Pump (no auxiliary heat)
RC Power 【1】
RH
(RH+RC joined by jumper)
Y Compressor relay
O
Changeover valve energized in heating
B Changeover valve energized in cooling
G
Fan relay
C/S1
24VAC common/remote sensor 【3】
S2
Remote sensor
RC Power (cooling transformer) 【1,2】
RH （RH+RCjoined by jumper）【1,2】
Y Cool relay 1
O Changeover valve energized in heating
B Changeover valve energized in cooling
Y2
Compressor relay 2
G Fan relay
C/S1
24VAC common/remote sensor 【3】
S2 Remote sensor
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