25
RH
W2
W1
RC
C
O
Y2
Y1
G
AUX
HVAC System Control Board
Fan
Aux Heat
Stage 1
Compressor
Command
Stage 1
RC
C
Reversing
Valve
G
W1
RC
C
Y1
O
C
R
Run
Fur
nac
e P
ow
ered
AU
X D
evic
e
Furnace
Heat Pump
One Stage Heat Pump with One Stage Auxiliary Heat
GLAS smart thermostat installation instructions -
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2018 Johnson Controls