ICM Controls SC 2311 Installation, Operation & Application Manual page 15

SimpleComfort
Payne Reliant and Endura Model Heat Pump Systems
Note 1: L terminal on PCB capped
Note 2: W3 terminal on PCB capped
24 VAC, return
R
24 VAC, common
C
Reversing valve (cooling mode)
O
Compressor contactor
Y
2nd stage heating circuit
W2
Fan contactor circuit
G
Emergency heating circuit
E
System monitor LED
L
3rd stage heating circuit
W3
2311 Electronic Thermostat Conversion to:
®
SC 231 1
Electronic Thermostat
W1
R C Y W2
O/B
(capped)
(capped)
E G