Manual 2100-742A
Page
53 of 54
Energize on
Unit Terminal
Strip
Mode
Occupied/
Unoccupied
Inputs to the Board
Outputs from the Board
RAT
Y
B
W2
A1
D
G
G1
BK
RV TWV
W
YO
A2
Y1, G
1st Cooling
Unoccupied
X
X
X
X
X
Y1, G, A
1st Cooling
Occupied
X
X
X
X
X
X
X
Y1, G, A, D
1st Cooling
w/Dehum
Occupied
X
X
X
X
X
X
X
X
Y1, G, D
1st Cooling
w/Dehum
Unoccupied
X
X
X
X
X
X
Y1, G, B/W1
1st Heat Pump
Unoccupied
X
X
X
X
X
X
X
Y1, G, B/W1, A
1st Heat Pump
Occupied
X
X
X
X
X
X
X
X
X
Y1, G, B/W1,
A, D
1st Heat Pump
w/Dehum
Occupied
X
X
X
X
X
X
X
X
X
X
X
Y1, G, B/W1, D
1st Heat Pump
w/Dehum
Unoccupied
X
X
X
X
X
X
X
X
Y1, G, B/W1,
W2
2nd Heat
Pump w/Strips
Unoccupied
X
X
X
X
X
X
X
X
X
Y1, G, B/W1,
W2, A
2nd Heat
Pump w/Strips
Occupied
X
X
X
X
X
X
X
X
X
X
X
Y1, G, B/W1,
W2, A, D
2nd Heat
Pump w/Strips
and Dehum
Occupied
X
X
X
X
X
X
X
X
X
X
X
X
Y1, G, B/W1,
W2, D
2nd Heat
Pump w/Strips
and Dehum
Unoccupied
X
X
X
X
X
X
X
X
X
X
D
Dehum
Unoccupied
X
X
X
X
D, A
Dehum
Occupied
X
X
X
X
X
X
TABLE 19
Dehumidification Relay Logic Board
Cooling takes precedence over dehumidification. A cooling call cancels dehumidification.
The relay logic board has a jumper (J1) on it to choose between “any-time dehumidification” and “occupied dehumidification”. The
factory default is P1-P2. With the jumper in the P1-P2 position, dehumidification is available any time there is a “D” input to the
relay logic board. With the jumper in the P2-P3 position, dehumidification is available when there is an occupancy signal to the “A1”
terminal, “D” would also need to be energized to dehumidify.
Refer to sequence of operation. In most cases cooling and heating modes take priority over dehumidification.
