Terminal Designations - Robertshaw RS8210 Operation Manual

W2 .......... Auxiliary heat relay
Y ............. Compressor relay
G ............. Fan relay
O ............. Heat pump reversing valve
energized in cooling
RH .......... 24VAC Power
C ............. Common wire (if applicable)
B ............. Heat pump reversing valve
energized in heating
E ............. Emergency heat relay
Note:
In many systems with no emergency heat relay, a jumper can be
installed between E and W2.

TERMINAL DESIGNATIONS

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