Trouble Shooting - Vanguard MINI-HEARTH VMH2800TPC Owner's Operating & Installation Manual

TROUBLE
SHOOTING
Note: All Trouble Shooting items are listed
in order of operation.
OBSERVED PROBLEM
When ignitor button is pressed, there is no
spark at ODS/pilot
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition
ODS/pilot lights but flame goes out when
control knob is released
103507
WARNING: Turn off and unplug 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 ODS/
pilot. This can damage ODS/pilot unit.
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 manual 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. Safety interlock system has been
triggered
4. Manual shutoff valve not fully open
5. Thermocouple connection loose at
control valve
6. 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
7. Thermocouple damaged
8. Control valve damaged
17
OWNER'S MANUAL
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 manual
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 16) 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 30 seconds
3. Wait one minute for safety interlock
system to reset. Repeat ignition operation
4. Fully open manual shut-off valve
5. Hand tighten until snug, then tighten 1/4
turn more
6. A) Contact local propane/LP company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 16) or replace ODS/
pilot assembly
7. Replace thermocouple
8. Replace control valve
Continued