White Rodgers UNP310 - Page 10

10
If your current
terminal has the
following letter
Writedown
that letter here
Label the wires with
the following letters
Terminal function
W2** W2
2ndStageHeat(Conventional)2ndStage
AuxiliaryHeat(HeatPump)
Y,Y1 Y 1stStageCompressor
Y2 Y2 2ndStagecompressor
G G Fan Relay
O, B*, O/B O/B ReversingValve(forheatpumpsystems)
L L HeatPumpDiagnostic
Terminal labeling reference chart, contʼd.