user manual

29
125,000/90,000 BTUH INPUT
180,000/120,000 BTUH INPUT
240,000/180,000 BTUH INPUT
250,000/200,000 BTUH INPUT
C08447
Fig. 38 -- Spark Adjustment (08--14)
Burner Ignition
Unit is equipped with a direct spark ignition 100% lockout
system. Integrated Gas Unit Controller (IGC) is located in
the control box. (See Fig. 37.) The IGC contains a
self--diagnostic LED (light--emitting diode). A single LED
on the IGC provides a visual display of operational or
sequential problems when the power supply is
uninterrupted. ( See Fig. 40.) When a break in power
occurs, the IGC will be reset (resulting in a loss of fault
history) and the indoor (evaporator) fan ON/OFF times
will be reset. The LED error code can be observed
through the viewport. During servicing refer to the label
on the control box cover or Table 9 for an explanation of
LED error code descriptions.
If lockout occurs, unit may be reset by interrupting power
supply to unit for at least 5 seconds.
Table 9 – LED Error Code Description*
LED INDICATION
ERROR CODE
DESCRIPTION
ON Normal Operation
OFF Hardware Failure
2Flashes Limit Switch Fault
3Flashes Flame Sense Fault
4Flashes 4 Consecutive Limit Switch Faults
5Flashes Ignition Lockout Fault
6Flashes I nduced ---Draft Motor Fault
7Flashes Rollout Switch Fault
8Flashes Internal Control Fault
9Flashes Software Lockout
LEGEND
LED --- L i g h t E m i t t i n g D i o d e
* A 3 – second pause exists between LED error code flashes. If
more than one error code exists, all app licable codes will be
displayed in numerical sequence.
IMPORTANT: Refer to Troubleshooting Table 13 and 14
for additional information.
580J