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Vermont Castings UVS27 Vent-Free Gas Heater
Follow these procedures in the order presented.
CONDITION
No spark at pilot when Ignitor is
operated.
The Ignitor Electrode sparks,
but Pilot does not light.
Regulator
HV104
Fig. 33 Honeywell valve assembly.
18
Troubleshooting
W A R N I N G
TURN OFF HEATER AND ALLOW TO COOL
COMPLETELY BEFORE SERVICING.
POSSIBLE CAUSE
1. Ignition Electrode is disconnected
from ignition wire, broken or
incorrectly positioned.
2. Ignitor wire is broken.
3. Bad Piezo Ignitor.
1. Gas supply is turned off or supply
line shut-off valve is closed.
2. Control Knob is not in PILOT
position.
3. Control Knob not pressed in while
in PILOT position.
4. Air present in gas lines.
5. Inlet supply pressure is not within
correct settings.
6. Other conditions that should be
identified only by a qualified gas
technician.
Piezo Ignitor
OFF
Pilot / Main Control
SOLUTION
1. Inspect and re-connect, replace
or repair as necessary.
2. Replace wire.
3. Replace Piezo Ignitor.
1. Turn on gas supply or open
supply line shut-off valve.
2. Turn Control Knob to PILOT.
3. Press Control Knob in while in
the PILOT position.
4. Continue holding in Control Knob
and repeat ignition procedure
until air is bled from the lines.
5. Call local gas supplier. Adjust
inlet supply pressure to specifica-
tion: NG; 5.5" w.c.-14.0"w.c. LP;
11.0" w.c.-14.0"w.c.
6. Call qualified gas technician.
20005004
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