OPERATION MODES
20
Program mode - ELECTRIC (P0)
Table 3: Heat Modes and Y2Out: BINs vs. Y1/Y2 with Electric Back Up
Program mode - Dual Fuel (P1)
Table 4: Heat Modes and Y2Out: BINs vs. Y1/Y2 with Dual Fuel Back Up
(NOTE) BIN E contains Y2Out for a first stage, Y1 demand call. This is in an effort to move enough heat for this condition.
3. The BINs in Table 3 and Table 4 are defined in Table 5. The outputs that are energized for the different heat modes are
described in Table 6.
4. The Outdoor Fan output (ODF1) is energized any time there is a call for Heating, except when in H6, H7, or during Defrost Mode.
Y2Out is not energized in Heat Mode 1. Y2Out is not energized in Heat Mode 2 when the ambient temperature is in BIN C and
Bin D. In any other heat modes, Y2Out is allowed to energize. Heat Mode is not allowed at 82°F (27.7°C) or above.
Outdoor Ambient Temperature BINs
Table 5: Outdoor Ambient Temperature BINs
5. In the Heat Mode, the operation does not move down from H2 to H1; this is the same idea for the Cool Mode. This is to reduce
the number of compressor cycles that occur.
Primary-2 Cylinders + W1Out
Primary-2 Cylinders + Booster and Economizer
Primary-2 Cylinders + Booster and Economizer + W1Out
W1Out - (10 minute OFF timer after 2 hour runtime
known as a “Coffee Break”)
Table 6: Heat Modes vs. Outputs Energized
(Note) The W1Out output is not a compressor stage; it is the Auxiliary Heat 1
st
Stage in the indoor air handler.
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