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TABLE 3
FLASH CODE
(X + Y)
STATUS / ERROR DESCRIPTION
FLASH CODE DESCRIPTIONS
Pulse A 1/4 second flash followed by four seconds of off time.
Heartbeat Constant 1/2 second bright and 1/2 second dim cycles.
X + Y
LED flashes X times at 2Hz, remains off for two seconds, flashes Y times at 2Hz, remains off for four
seconds, then repeats.
Pulse Power on - Standby.
Heartbeat Normal operation - signaled when heating demand initiated at thermostat.
FLAME CODES
1 + 2 Low flame current -- check flame sensor.
1 + 3 Flame sensed out of sequence -- flame still present. Flame sensed without gas valve energized.
PRESSURE SWITCH CODES
2 + 3 Low pressure switch failed open. Check blocked inlet/exhaust .
2 + 4 Low pressure switch failed closed. Pressure switch closed prior to activation of combusiton air inducer.
LIMIT CODE
3 + 1 Limit switch open.
WATCHGUARD CODES
4 + 1 Watchguard -- Exceeded maximum number of retries. Burners failed to light.
4 + 2 Watchguard -- Exceeded maximum number of retries or last retry was due to pressure switch opening.
4 + 3 Watchguard -- Exceeded maximum number of retries or last retry was due to flame failure.
4 + 5 Watchguard -- Limit remained open longer than three minutes.
4 + 6 Watchguard -- Flame sensed out of sequence; flame signal gone.
4 + 8 Low line voltage.
HARD LOCKOUT CODES
5 + 1 Hard lockout -- Rollout circuit open or previously opened.
5 + 4
Reversed line voltage polarity (control will restart if the error recovers). And or no Earth groas valve
faulund
5 + 5 Gas valve fault ( sensed open when should be closed, or sensed closed when should be open).
5 + 6 Program memory fault (internal microprocessor memory fault)
5 + 7 Flame sense circuit fault. (flame sense circuit or bad flame probe fault).
5 + 8 No communication packet fault (loss of communications between redundant microprocessor fault).
5 + 9 Bad communication packet fault. (corrupted communications between redundant microprocessor fault).
5 + 10 Redundant variable fault. (internal microprocessor memory retention fault).
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