Troubleshooting - USSC 9660 User Manual

PROBLEM:
Piezo sparker won't light pilot.
PROBLEM:
Pilot will not stay lit.
PROBLEM:
Pilot stays on but main burner won't
come on.
PROBLEM:
Wall switch must be pushed multiple
times to make flame come on.
USSC

TROUBLESHOOTING

POSSIBLE CAUSES:
1. Misaligned electrode.
2. Incorrect wire connections.
3. Defective electrode.
4. Defective push button.
5. No gas present.
POSSIBLE CAUSES:
1. Incorrect lighting procedure.
2. Pilot flame not making proper
contact with thermopile.
3. Bad connection between thermopile
and screw terminals on gas valve.
4. Wires on wrong terminals.
5. Thermopile is defective, dirty, or
weak.
6. Thermopile is shorting out where it
passes through cabinet.
7. Gas valve will not prove pilot.
8. Air in line.
9. Wire from valve to wall switch or
remote switch is nicked or shorting
out.
10. Switch defective or short in circuit.
POSSIBLE CAUSES:
1. Wired incorrectly.
2. Wall switch, on/off switch, or remote
hand switch defective.
3. Not enough voltage being generated
by pilot.
4. Defective gas control valve.
POSSIBLE CAUSES:
Defective wall switch.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE
REMEDIES:
1. Realign electrode so it produces
spark into pilot hood (approximately
1/8" from pilot hood).
2. Make sure connections are proper.
3. Replace electrode if shorted out or it
has cracked porcelain.
4. Replace push button.
5. Turn gas on.
REMEDIES:
1. Checking lighting instructions found
on label in gas fireplace or in own-
ers manual.
2. Adjust pilot (see page 6).
3. Make sure screws are snug holding
thermopile. (Do not overtighten or
the screws will become stripped).
4. White lead from thermopile must go
to top screw TH TP terminal and red
wire must go to spill switch wire.
5. Test with millivolt meter and replace
if necessary.
6. Replace thermopile.
7. Replace valve.
8. Purge air from gas line.
9. Remove wall switch wires from top
and bottom screw of millivolt valve.
If unit is OK and you reconnect the
wall switch and it cuts out again, then
replace wires to wall switch.
10. Replace switch.
REMEDIES:
1. See page 22 for correct wiring.
2. Replace wall switch, on/off switch,
or remote hand switch.
3. Adjust pilot light up to create more
voltage or replace thermopile.
4. Replace gas control valve.
REMEDIES:
Replace wall switch.
NOTE: Can use standard single
pole electrical switch.
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