Filter
Top Products
1. LED flashes a current status code, or code 11, 4 times.
Record this status code for further troubleshooting.
2. The inducer will start and continue to run until test is over.
3. Hot surface igniter (HSI) is energized for 15 sec, then
de-energized.
4. The blower motor operates on HEATING speed for 10 sec,
then turns off.
5. The blower motor operates on COOLING speed for 10 sec,
then turns off.
6. Blower operates on continuous fan speed, then turns off.
7. Inducer turns off.
8. The gas valve and humidifier terminal HUM are not
energized for safety reasons.
Fig. 12— Control Center
A02142
BLW
NUETRAL
STATUS CODE LED
SEC-2 SEC-1
EAC-2 L2
FUSE 3-AMP
0.5 AMP@24VAC
HUM
TEST/TWIN
Y1 DHUM G COM W/W1 Y/Y2 R
24V
PLT
120 180
90 150
BLOWER OFF-DELAY
PLT 1
COOL HEAT
SPARE-1 SPARE-2
FAN
EAC-1
1-AMP@
115VAC
PR-1
L1
PL2 1
24-V THERMOSTAT
TERMINALS
3-AMP FUSE
LED OPERATION &
DIAGNOSTIC LIGHT
115-VAC(L2)NEUTRAL
CONNECTIONS
COOL
HEAT
SPARE-1
SPARE-2 FAN
BLOWER SPEED
SELECTION TERMINALS
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
115 VAC (L1) LINE
VOLTAGE CONNECTION
PL2-HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
PL1-LOW VOLTAGE MAIN
HARNESS CONNECTOR
TRANSFORMER 24-VAC
CONNECTIONS
HUMIDIFIER TERMINAL
(24-VAC 0.5 AMP MAX.)
TWINNING AND/OR
COMPONENT TEST
TERMINAL
BLOWER OFF-DELAY
A93058
32°F MINIMUM INSTALLED
AMBIENT OR FREEZE
PROTECTION REQUIRED
Fig. 13—Winterizing the Furnace
—10—