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S S e e q q u u e e n n c c e e o o f f O O p p e e r r a a t t i i o o n n
Table 13. IGN LED Diagnostic Indicators
Status LED
Steady OFF
Check Power or Failed Board
Normal, No Call for Heat
Slow Flash Rate
Fast Flash Rate
Not used
Steady ON
Normal, Call for Heat
Fast Flash Rate: The LED will flash on for 1/4 second and off for 1/4 second.
Slow Flash Rate: The LED will flash on for 3/4 second, then off for 1/4 second.
The pause between groups of fast flashes is 3 seconds.
22
Liteport LED
System Lockout: Failed to detect or sustain
2 Flashes
flame
Pressure switch problem detected
3 Flashes
High Limit switch protection device open
4 Flashes
Flame sensed and gas valve not energized or
5 Flashes
flame sensed and no "W" signal.
Flame Rollout Switch open
6 Flashes
Thermostat miswired; W! & W2
7 Flashes
88-4YCA4001-1A-EN
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