10
Res. D Series
10
Abnormal Operation (cont.)
times, then 3 times twice with 3 second pauses. The status self clears if the
fault clears for at least 15 seconds.
c.
Water temperature in excess of ECO (energy cut off) limit
-The gas
control immediately turns off pilot & main valves and proceeds to flash 4
times with a 3 second pause. To reset the gas control, rotate the setpoint
knob to the minimum setting for at least 6 seconds before returning to
desired temperature setting.
3. Damper Safety Circuit Fault:
a.
Damper Failed to Open
-The gas control proceeds to flash 3 times with a 3
second pause. The gas control waits 5 minutes, and then tries to open the
damper again.
b.
Damper failed to close
-the gas control proceeds to flash 2 times with a 3
second pause. The gas control waits 5 minutes, and then tries to open the
damper again.
4. Trial for Ignition Fault:
a.
Damper Jostled During Trial
-The gas control stops the trial for ignition.
The gas control proceeds to flash 3 times with a 3 second pause. The gas
control waits 5 minutes, and then tries to open the damper again.
b.
Flame not sensed
-The gas control energizes the spark igniter attempting to
light the pilot and prove flame. If flame is not sensed within 90 seconds, the
spark igniter turns off, the pilot valve is closed. The gas control LED flashes
6 times, then 1 time with a 3 second pause. The gas control waits 5 minutes
before repeating the ignition sequence.
5. Flame sensing fault:
a.
Flame lost during run
-The gas control turns off pilot and main valves. 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 has
been reached, the gas control LED 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 damper is in the open position. If flame is present when the pilot
valve is not open, the gas control proceeds to wait for flame loss and flashes
5 times with 3 second pause. This continues until flame is lost. Once the
flame signal is lost, the control flashes 6 times then, 4 times with 3 second
pause. The control waits 5 minutes before repeating the ignition sequence.
