17
18. TROUBLE SHOOTING GUIDE
SYMPTOM SOLUTION
1. Power light is not lit when switch is
flipped to “ON”
•
Check wiring to switch.
•
Check circuit breaker
•
Check
fuse
2. Water flow light remains off.
•
Ensure that pump is running
•
Check wiring to flow switch
3. Pilot sparks but does not light
•
Make sure that main manual valve is
open
•
Follow lighting instructions to bleed air
out of pilot line.
•
Remove pilot burner and inspect for
moisture or dirt in pilot or in pilot line.
4. Pilot lights momentarily, goes out and
then sparks again repeatedly
•
Observe pilot for proper flame. Adjust
if necessary
•
Remove pilot and ensure that spark
electrode is clean and properly
located.
5. Pilot lights but main burner does not fire.
•
Ensure that main firing valve is in
“OPEN” position
•
Check wiring to valve from ignition
control.
6. Main burner lights but cycles off after a
few minutes
•
Make sure that high limit is set high
enough to prevent short cycling.
•
Adjust pilot pressure for steady flame
•
Remove pilot and clean ignition
sensor.
7. Boiler starts to whine as the temperature
rise increases.
•
Make sure that all air is bled from
system.
•
Make sure that the static pressure in
cold system is at least 15 psig.
•
Check temperature rise across boiler
to ensure adequate water flow.
•
If necessary, increase static water
pressure and decrease gas pressure.
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