Troubleshooting - Desa Tudor VT36NA Series Owner's Operation And Installation Manual

WARNING: Turn off heater and let cool before servicing. Only a
qualified service person should service and repair heater.
CAUTION: Never use a wire, needle, or similar object to clean
pilot. This can damage pilot unit.
Note: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM
When ignitor button is pressed,
there is no spark at pilot
When ignitor button is pressed,
there is spark at pilot but no
ignition
32

TROUbLEShOOTING

POSSIBLE CAUSE
1. Ignitor electrode not con-
nected to ignitor cable
2. Ignitor cable pinched or wet
3. Piezo ignitor nut is loose
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode broken
7. Ignitor electrode positioned
wrong
1. Gas supply turned off or equip-
ment shutoff valve closed
2. Gas control knob not in PILOT
position
3. Gas control knob not pressed
in while in PILOT position
4. Air in gas lines when in-
stalled
5. Depleted gas supply (propane/
LP models only)
6. Pilot is clogged
7. Gas regulator setting is not
correct
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REMEDY
1. Reconnect ignitor cable
2. Free ignitor cable if pinched
by any metal or tubing. Keep
ignitor cable dry
3. Tighten nut holding piezo
ignitor. Nut is located behind
the mounting bracket
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace pilot assembly
7. Replace pilot assembly
1. Turn on gas supply or open
equipment shutoff valve
2. Turn gas control knob to PI-
LOT position
3. Press in gas control knob while
in PILOT position
4. Continue holding down control
knob. Repeat igniting opera-
tion until air is removed
5. Contact local propane/LP gas
company
6. Clean pilot (see Cleaning and
Maintenance, page 30) or replace
pilot assembly
7. Replace gas control
111250-01E