Installation & Service Manual
5 Electrical connections (continued)
Diagnostic Status Indication
Figure 5-12_Hot surface ignition control module
The ignition module has an LED which indicates the status of the safety circuits. A remote Ignition Module Status indicating light is wired from the ignition module Status LED and mounted on the front diagnostic panel. The flashing operation of this light indicates the diagnostic status of the ignition control module. The status LED, mounted on the ignition module flashes a code sequence from the Ignition Module to indicate the status of the ignition process. See Table 5D for the flashing diagnostic status codes as signaled by the ignition module.
Ignition and control timings
Proven Pilot Hot Surface Ignition System is standard on all models.
Hot Surface Ignition Module Timings (Nominal)
Prepurge:
15 Seconds
Hot Surface Igniter
25- 35 seconds
Main Burner Flame Establishing Period:
4 Seconds
Failure Response Time:
0.8Seconds at less than 0.5 µA flame current Flame Current:
2 - 6 µA
Time Delay Between Stages 1&2:
10 or 120 Seconds (depending on high fire offset settings)
30 Seconds Pump Delay Timing:
30 Seconds after burner shutdown.
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