ICM Controls I3 1010HR - Terminal Designator Explanations

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Terminal Designator Descriptions
SC,S1,S2–Remotesensororoutdoorsensor
 RC,RH–24VAChot
 C–24VACcommon
 Y1–1ststagecool,1ststageheatforheatpumps
 Y2–Secondstagecoolfor2-compressorsystems.Secondstageheatfor2-compressorheatpumpsystems.
 G–Fan
W1/O/B–Congurable
 W1 – 1ststageheatfornon-heatpumpsystems
 O – Coolactivereversingvalve
 B – Heatactivereversingvalve
 W2–2ndstageheatfor1compressorheatpumpandnon-heatpump
 AUX–Humidierordehumidier
Note:Not all terminals are used in every model.