11
Service Facts
IGN Diagnostic Indicators Flash Codes
Steady OFF
Check Power or Failed Board 2 Flashes
System Lockout: Failed to detect or
sustain flame
Slow Flash Rate Normal, No Call for Heat
3 Flashes Pressure switch problem detected
Fast Flash Rate Not used
4 Flashes
High Limit switch protection device
open
Steady ON
Normal, No Call for Heat
5 Flashes
Flame sensed and gas valve not
energized or flame sensed and no "W"
signal
6 Flashes Flame Rollout Switch open
7 Flashes Thermostat miswired; W1 & W2
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.
Status LED
Liteport LED
IGN Diagnostic Indicators Flash Codes
Summary of Contents for 4YCY4036B-SF-1H
Page 9: ...9 Service Facts...
Page 12: ...Trane 6200 Troup Highway Tyler TX 75707 01 13...
