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Diagnostic Chart
LED
DESCRIPTION
COLOR
ACTIVITY
NO 24 VAC
LED OFF
POWER TO
CONTROL
RED,
POWER-UP
AMBER,
VERIFICATION OF
GREEN
LED
STEADY
CONTROL FAULT
RED
ON
DETECTED
RETRIES
1 FLASH
RED
EXCEEDED
PRESSURE
2 FLASHES
SENSOR NULL
RED
ERROR
PRESSURE
3 FLASHES
SENSOR SPAN
RED
ERROR
HIGH LIMIT
4 FLASHES
RED
SWITCH OPEN
FLAME PRESENT
5 FLASHES
WITH GAS VALVE
RED
OFF
THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO TROUBLESHOOTING THIS
APPLIANCE. SOME MORE USEFUL STATUS LIGHT CODES ARE BELOW:
MINIMUM
LED
LOCKOUT
ACTIVITY
PERIOD¹
NORMALLY CLOSED
N/A
6 FLASHES
SWITCH/AUXILIARY
GAS VALVE CIRCUIT
N/A
7 FLASHES
1 HOUR OR HARD
8 FLASHES
LOCKOUT
HIGH LIMIT SWITCH
1 HOUR FIXED
10 FLASHES
OEM FACTORY TEST
5 MINUTES
STEADY ON
RAPID
5 MINUTES
FLASH
MAXIMUM
RECOVERY TIME
-
1 FLASH
LOW FLAME SENSE
1 HOUR IF TIME
EXCEEDED
5 MINUTES
¹THE FAULT CONDITION MUST BE CLEARED FOR 30 SECONDS BEFORE NORMAL OPERATION CAN RESUME.
A POWER CYCLE WILL ASLO RESET ANY LOCKOUT.
APPENDIX
MINIMUM
DESCRIPTION
COLOR
LOCKOUT
MAXIMUM
RECOVERY TIME
BLOCKED BURNER
RED
1 HOUR IF TIME
SWITCH OPEN
EXCEEDED
RED
SHORTED
RESERVED
RED
1 HOUR OR HARD
RECOVERY TIMER
RED
LOCKOUT
EXPIRED
AMBER
MODE
FIELD TEST MODE
AMBER
AMBER
22
LED
DESCRIPTION
ACTIVITY
PERIOD¹
-
2 FLASHES ID PLUG FAILURE AMBER
CONTROL FUSE
1 HOUR
3 FLASHES
OPEN
STANDBY
NORMAL
STEADY ON
OPERATION NO
THERMOSTAT
REQUESTS
RAPID
CLEAR ERROR
FLASH
HISTORY
CALL FOR
N/A
1 FLASH
HEATING
CALL FOR
N/A
2 FLASHES
COOLING
CONTINUOUS
N/A
3 FLASHES
FAN OPERATION
MINIMUM
COLOR
LOCKOUT
PERIOD¹
HARD LOCKOUT
HEATING MODE
AMBER
5 MINUTES
GREEN
N/A
GREEN
N/A
GREEN
N/A
GREEN
N/A
GREEN
N/A
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