FB, FE, FF1E, FFM, FG, FH, FJ, FMA, FT, FV, FX, FY, FZ, F54, PF: Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9
NOTE: On FT4, SEC1 and SEC2 are reversed in the above image. See (Low-Voltage Circuit
Fusing and Reference on p7)
A96431
Fig. 10 – Easy Select Board Schematic
Heat Pump Heating Mode — Single Speed or Two-Speed High
Thermostat closes R to Y/Y2 and R to G. A circuit R to Y1 is required
for two-speed high operation. The unit delivers airflow selected by
AC/HP SIZE selection and CFM ADJUST selection. Selected delay
profile is active in this mode.
Heat Pump Heating Mode — 2-Speed Low
Thermostat closes R to G and R to Y1. Unit delivers two-speed low
airflow for AC/HP SIZE and CFM ADJUST selected. Selected delay
profile is active in this mode.
Non-Staged Auxiliary with Heat Pump Heating Mode
Thermostat should already have closed R to G, R to Y2 for heat pump
heating operation. With J2 jumper in place, energizing either W1 or W2
will produce the W2 airflow. This is the greater of heat pump heating
and auxiliary heat airflow plus an additional 15 percent. The elected
delay profile is not active in this mode.
Staged Auxiliary Heat with Heat Pump Heating Mode
The auxiliary heat can be staged by removing the J2 jumper that ties W1
and W2 terminals together. Staging can be done by using outdoor
thermostats or by using the Intelligent Heat Staging option where the
indoor control can be configured for three-stage electric heat. The unit
will automatically adjust airflow when the different stages of heat are
energized. The airflow delivered will depend on the heat pump size
selected and electric heat size selected. The greater of the two airflows
will be delivered. The selected delay profile is not active in this mode.
Electric Heat without Heat Pump
Thermostat closes R to W and thermostat should be set up to energize G
with W. This is due to the Super Comfort Heat programming in the
AUX1
SYSTEM DIAGRAM
HEATER/MOTOR
12
11
10
9
8
7
6
5
4
3
2
1
SEC1 SEC2
5 AMP
J1
D
H
R
W
1
W
2
Y
1
Y/Y
2
G
O
C
J2
HUM1
AUX2
HUM2
DIODE
LOGIC
AUX HEAT
KW/CFM
AC/HP
SIZE
SYSTEM
TYPE
AC/HP CFM
ADJUST
ON/OFF
DELAY
CONTINUOUS
FAN
GRY
1
/
4
"
1
/
4
"
1
/
4
"
1
/
4
"
1
/
4
"
1
/
4
"
1
/
4
"
Table 3 – Connections and Connectors (FK4, FV4)
Type Connection Type Connector Pin No. Description
Heater Connection 12-Pin
Pin 1 Common to screw terminal G
Pin 2 Common to screw terminal Y/Y2 through diode D3
Pin 3 Common through Y1 through diode D2
Pin 4 Common to W2 screw terminal
Pin 5 Common to W2 screw terminal
Pin 6 Common to W1 screw terminal
Pin 7 Common to W1 screw terminal
Pin 8 R 24Vac
Pin 9 Common to transformer C
Pin 10 Common to transformer C
Pin 11 Common to transformer C
Pin 12 Common to DH screw terminal
Table 4 – Typical Operating Modes
Operating Mode Terminals Energized
Heat Pump Only Heating R, Y/Y2, G, DH
Heat Pump Only Heating + Super Comfort Heat Mode R, Y/Y2, DH
Heat Pump Heating + Auxiliary Heat (non-staged) R, Y/Y2, G, DH, W2
Cooling R, Y/Y2, G, DH, O
Cooling + Dehumidification R, Y/Y2, G, O
To Next Page
Loading...
