Troubleshooting - Vanguard VP10TA Owner's Operation And Installation Manual

TROUBLESHOOTING

Note: For additional help, visit DESA
International's Technical Service web
site at www.desatech.com.
Note: All troubleshooting items are listed in
order of operation.
OBSERVED PROBLEM
When ignitor button is pressed in there is no
spark at ODS/pilot
When ignitor button is pressed and control
knob is pressed in and turned to the PILOT
position, there is spark at ODS/pilot but no
ignition
ODS/pilot lights but flame goes out when
control knob is released
104083
WARNING: Turn off heater
and let cool before servicing. Only
a qualified service person should
service and repair heater.
POSSIBLE CAUSE
1. Ignitor electrode positioned wrong
2. Ignitor electrode broken
3. Ignitor electrode not connected to ignitor
cable
4. Ignitor cable pinched or wet
5. Piezo ignitor nut is loose
6. Broken ignitor cable
7. Bad piezo ignitor
1. Gas supply turned off or equipment
shutoff valve closed
2. Control knob not in PILOT position
3. Control knob not pressed in while in
PILOT position
4. Air in gas lines when installed
5. Depleted gas supply
6. ODS/pilot is clogged
7. Gas regulator setting is not correct
1. Control knob not fully pressed in
2. Control knob not pressed in long enough
3. Equipment shutoff valve not fully open
4. Thermocouple connection loose at
control valve
5. Pilot flame not touching thermocouple,
which allows thermocouple to cool,
causing pilot flame to go out. This
problem could be caused by one or both
of the following:
A) Low gas pressure
B) Dirty or partially clogged ODS/pilot
6. Thermocouple damaged
7. Control valve damaged
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13
OWNER'S MANUAL
CAUTION: Never use a wire,
needle, or similar object to clean
ODS/pilot. This can damage ODS/
pilot unit.
REMEDY
1. Replace ignitor
2. Replace ignitor
3. Reconnect ignitor cable
4. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
5. Tighten nut holding piezo ignitor to
heater cabinet. Nut is located inside
heater cabinet at top
6. Replace ignitor cable
7. Replace piezo ignitor
1. Turn on gas supply or open equipment
shutoff valve
2. Turn control knob to PILOT position
3. Press in control knob while in PILOT
position
4. Continue holding down control knob.
Repeat igniting operation until air is
removed
5. Contact local propane/LP gas company
6. Clean ODS/pilot (see Cleaning and
Maintenance, page 12) or replace ODS/
pilot assembly
7. Replace gas regulator
1. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in 10 seconds
3. Fully open equipment shutoff valve
4. Hand tighten until snug, then tighten 1/
4 turn more
5. A) Contact local propane/LP gas
company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 12) or replace ODS/
pilot assembly
6. Replace thermocouple
7. Replace control valve
Continued