14
440 04 6601 03
Specifications subject to change without notice.
3. Remove the Main/Control door (the upper door on
upflow installations).
4. BRIEFLY (2
−
3 seconds) disconnect and reconnect
ONE of the main limit wires.
5. The LED will flash the last stored fault code. Refer to
the Service Label (Figure 5) to interpret the LED.
6. A component test sequence will follow.
7. Reinstall the Main/Control door.
THE BLOWER IS LOCATED
TO THE RIGHT OF THE
BURNER SECTION, AND
AIR CONDITIONED AIR IS
DISCHARGED TO THE LEFT.
THE BLOWER IS
LOCATED BELOW THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED UPWARD.
THE BLOWER IS
LOCATED ABOVE THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED DOWNWARD
THE BLOWER IS
LOCATED TO THE LEFT
OF THE BURNER SECTION,
AND CONDITIONED AIR IS
DISCHARGED TO THE RIGHT.
A02097
Figure 6
−
Multipoise Orientations
115-V FIELD-
SUPPLIED
DISCONNECT
AUXILIARY
J-BOX
24-V
TERMINAL
BLOCK
THREE-WIRE
HEATING-ONLY
FIVE WIRE
NOTE 1
NOTE 2
FIELD-SUPPLIED
DISCONNECT
CONDENSING
UNIT
TWO
WIRE
FURNACE
C
O
N
T
R
O
L
R
G
COM
W
C
R
G
Y
GND
GND
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
BLOWER DOOR SWITCH
WHT
BLK
WHT
BLK
NOTES:
Connect Y-terminal in furnace as shown for proper blower operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
W
Y
GND
THERMOSTAT
TERMINALS
1.
2.
3.
A11387
Figure 7
−
Typical Single
−
Stage Wiring Diagram
Component Self-Test
NOTE
: The furnace control component test allows all
components to run for a short time; except the gas valve
and humidifier terminal HUM are not energized. The EAC-1
terminal is energized when the blower is energized. This
feature helps diagnose a system problem in case of a
component failure. The component test feature will not
operate if any thermostat signal is present at the control and
not until all time delays are completed.
To Begin Component Self-Test:
1. Remove blower access door.
2. Disconnect the thermostat R lead from furnace
control.
3. Manually close blower door switch.
