Bryant 583B instruction manual Led Troubleshooting-Errorcode

TABLE 12—LED TROUBLESHOOTING–ERROR CODE

SYMPTOM	CAUSE	REMEDY
		Check 5 amp fuse on IGC, power to unit, 24-v
Hardware failure.		circuit breaker, and transformer. Units without a
	Loss of power to control module (IGC)	24-v circuit breaker have an internal overload in
(LED OFF)
		the 24-v transformer. If the overload trips, allow
		20 minutes for automatic reset.
	High limit switch opens during heat exchanger	Ensure unit is fired on rate and temperature rise
Fan ON/OFF delay modified. (LED/FLASH)	warm-up period before fan-on delay expires	is correct.
	Limit switch opens within three minutes after	Ensure unit’s external static pressure is within
	blower-off delay timing in Heating mode	application guidelines.
Limit switch fault. (LED 2 flashes)		Check operation of indoor (evaporator) fan motor.
	High temperature limit switch is open	Ensure that the supply-air temperature rise is in
		accordance with the range on the unit nameplate.
Flame sense fault. (LED 3 flashes)	The IGC sensed flame that should not be present	Reset unit. If problem persists, replace control
		board.
4 consecutive limit switch faults. (LED 4		Check operation of indoor (evaporator) fan motor
	Inadequate airflow to unit	and that supply-air temperature rise agrees with
flashes)
		range on unit nameplate information.
		Check ignitor and flame sensor electrode spacing,
Ignition lockout. (LED 5 flashes)	Unit unsuccessfully attempted ignition for 15 min-	gaps, etc. Ensure that flame sensor and ignition
	utes	wires are properly terminated. Verify that unit is
		obtaining proper amount of gas.
		Check for proper voltage. If motor is operating,
		check the speed sensor plug/IGC Terminal J2
Induce-draft motor fault. (LED 6 flashes)	IGC does not sense that induced-draft motor is	connection. Proper connection:
	operating	PIN 1 – White,
		PIN 2 – Red,
		PIN 3 – Black.
		Rollout switch will automatically reset, but IGC will
Rollout switch fault. (LED 7 flashes)		continue to lockout unit. check gas valve opera-
	Rollout switch has opened	tion. ensure that induced-draft blower wheel is
		properly secured to motor shaft. Reset unit at unit
		disconnect.
Internal control fault. (LED 8 flashes)	Microprocessor has sensed an error in the soft-	If error code is not cleared by resetting unit
	ware or hardware	power, replace the IGC.
Internal software fault. (LED 9 flashes)	Microprocessor has sensed an error in it’s redun-	If error code is not cleared by resetting unit
	dant software comparison	power, replace the IGC.

CAUTION: If the IGC must be replaced, be sure to ground yourself to dissipate any electrical charge that may be present before handling new control board. the IGC is sensitive to static electricity and may be damaged if the necessary precautions are not taken.

IMPORTANT: Refer to Heating Troubleshooting Chart for additional troubleshooting analysis.

LEGEND

IGC – Integrated Gas Unit Controller

LED – Light-Emitting Diode

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