Page 27
Installer’s Guide
Table 7. IGN LED Diagnostic Indicators
*
Status LEDs
IGN Board Diagnostic Codes
There are two LEDs on the IGN board that provide status and
diagnostic information. Refer to Table 7 for a description of
the LED 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 4YCY4024
Page 5: ...Page 5 Installer s Guide Figure 2 4YCY4024 through 4YCY4036 2 of 3...
Page 6: ...Page 6 Installer s Guide Figure 3 4YCY4024 through 4YCY4036 3 of 3...
Page 8: ...Page 8 Installer s Guide Figure 5 4YCY4042 through 4YCY4060 2 of 3...
Page 9: ...Page 9 Installer s Guide Figure 6 4YCY4042 through 4YCY4060 3 of 3...
