13
Condensing PV Series
13
Abnormal Operation (cont.)
blower through post purge and flashes 6 times, then once with a 3 second
pause. The control waits 5 minutes before repeating the ignition sequence.
5. Flame sensing fault:
a.
Flame lost during run
-the gas control turns off the pilot and main valves
and runs blower for 15 seconds (inter-purge). The gas control increments
the recycle count. If the recycle count has not reached its limit (4), another
trial for ignition begins. If the recycle count limit has been reached, the gas
control turns off the blower and flashes 6 times, then 3 times with a 3 second
pause. The gas control waits 5 minutes before repeating the ignition
sequence.
b.
Flame sensed out of sequence
-the gas control only looks for pilot flame
when the blower is running. If the flame is present when the pilot valve is not
open, the gas control proceeds to wait for flame loss and flashes 5 times with
a 3 second pause. This continues until flame signal is lost. Once the flame
signal is lost, the control flashes 6 times, then 4 times with a 3 second pause.
The control waits 5 minutes before repeating the ignition sequence.
