Troubleshooting - Desa VMH1OTPB Owner's Operation And Installation Manual

TROUBLESHOOTING
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TROUBLESHOOTING
Note: For additional help, visit DESA
A
WARNING: Turn off and unplug
A
CAUTION: Never use a wire,
Heating
Products' technical service web
fireplace and let cool before servic-
needle, or similar objectto clean
site at
www.desatech.com .
ing. Only a qualified service person ODS/pilot. This can damage
Note: All
troubleshooting items are listed in
should service and repair fireplace. ODS/pilot unit.
order of operation.
OBSERVED PROBLEM
When ignitor button is pressed, there is no
spark at ODS/pilot
When ignitor hunon is pressed, there
is
spark at ODS/pilot but no ignition
POSSIBLE CAUSE
I. Ignitor electrode not connected to igni-
tor cable
2. Ignitor
cable pinched
if
V. et
3. Broken ignitor cable
4. Bad piezo ignitor
5. Ignitor electrode positioned wrong
6. Ignitor electrode broken
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 (propane/LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not correct
REMEDY
I. Reconnect ignitor cable
2. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
3. Replace ignitor cable
4. Replace piezo ignitor
5. Replace pilot assembly
6. Replace pilot assembly
Tum 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 °DS/pilot (see
Cleaning and
Maintenance.
page 29) or replace ODS/
pilot assembly
7. Replace gas regulator
I. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds
3. Wait one minute for safety interlock sys-
tem to reset. Repeat ignition operation
4. Fully open equipment shutoff valve
5. A) Contact local natural or propane/LP
gas company
B) Clean ODS/pilot (see
Cleaning and
Maintenance,
page 29) or replace ODS/
pilot assembly
6. Dand tighten until snug, then tighten
1/4 turn
more
7. Replace pilot assembly
8. Replace control valve
01)5/pilot lights but flame goes out when
I. Control knob not fully pressed in
control knob is released
2. Control knob not pressed in long enough
3. Safety interlock system has been
triggered
4. Equipment shutoff valve not fully open
5. Pilot flame not touching thermocouple,
which allows thermocouple to cool.
causing pilot flame to go out. This prob-
lem could be caused by one or both of
the following:
A) Low gas pressure
B1 Dirty or partially clogged °DS/pilot
6. Thermocouple connection loose at con-
trol valve
7. Thermocouple damaged
8. Control valve damaged
For more informationi r
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