Bryant 582A Installation, Start-Up, And Operating Instructions Manual page 32

SYMPTOM
Hardware failure.
(LED OFF)
Fan ON/OFF delay modified
(LED/FLASH)
Limit switch faults.
(LED 2 flashes)
Flame sense fault.
(LED 3 flashes)
4 consecutive limit switch faults.
(LED 4 flashes)
Ignition lockout.
(LED 5 flashes)
Induced-draft motor fault.
(LED 6 flashes)
Rollout switch fault.
(LED 7 flashes)
Rollout control fault.
(LED 8 flashes)
Temporary software lock out.
(LED 9 flashes)
* WARNING : 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 Table 17—Troubleshooting Guide—Heating for additional troubleshooting analysis.
LEGEND
IGC — Integrated Gas Unit Controller
LED — Light-Emitting Diode
TABLE 18—TROUBLESHOOTING GUIDE–LED ERROR CODES
CAUSE
Loss of power to control module (IGC)*.
High limit switch opens during heat
exchanger warm-up period before fan-on
delay expires.
Limit switch opens within three minutes
after blower-off delay timing in Heating mode.
High temperature limit switch is open.
The IGC* sensed flame that should not be
present.
Inadequate airflow to unit
Unit unsuccessfully attempted ignition for
15 minutes.
IGC does not sense that induced-draft
motor is operating.*
Rollout switch has opened.
Microprocessor has sensed an error in the
software or hardware.
Electrical interference
impeding IGC software
Check 5-amp fuse on IGC*, power to unit, 24–v circuit breaker, and
transformer. Units without a 24–v circuit breaker have an internal
overload in the 24–v transformer. If the overload trips, allow 10 min-
utes
for automatic reset.
Ensure unit is fired on rate; ensure temperature rise is correct.
Ensure unit's external static pressure is within application guidelines.
Check the operation of the indoor (evaporator) fan motor. Ensure
that the supply-air temperature rise is in accordance with the range
on the unit nameplate.
Reset unit. If problem persists, replace control board.
Check operation of indoor (evaporator) fan motor and that supply-air
temperature rise agrees with range on unit nameplate information.
Check ignitor and flame sensor electrode spacing, gaps, etc. Ensure
that flame sense and ignition 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 connection. Proper connection:
PIN 1— White
PIN 2 — Red
PIN 3 — Black.
Rollout switch will automatically reset, but IGC* will continue to lock-
out unit. Check gas valve operation. Ensure that induced-draft
blower wheel is properly secured to motor shaft. Reset unit at unit
disconnect.
If error code is not cleared by resetting unit power, replace the IGC*.
Reset 24-v. to control board or turn thermostat off,
then on again. Fault will automatically
reset itself in one (1) hour.
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REMEDY