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106442
MDVFST DIRECT-VENT GAS FIREPLACE
®
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
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
models only)
6. 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. 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
B) Dirty or partially clogged pilot
5. Thermocouple connection loose at con-
trol valve
6. Thermocouple damaged
7. Control valve damaged
1. Burner orifice clogged
2. Inlet gas pressure is too low
3. Thermopile leads disconnected or im-
properly connected
4. Thermopile is defective
1. Manifold pressure is too low
2. Burner porting or orifice clogged
1. Burner orifice is clogged or damaged
2. Damaged burner
3. Gas regulator defective
1. Residues from manufacturing processes
and logs curing
1. Air in gas line
2. Dirty or partially clogged burner orifice
REMEDY
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 pilot or replace pilot assembly
7. Replace gas control
1. Press in control knob fully
2. After pilot lights, keep control knob
pressed in 30 seconds
3. Fully open equipment shutoff valve
4. A) Contact local gas company
B) Clean pilot or replace pilot assembly
5. Hand tighten until snug, then tighten
1/4 turn more
6. Replace thermocouple
7. Replace control valve
1. Clean burner or replace burner orifice
2. Contact local propane/LP or natural gas
company
3. Reconnect leads
4. Replace thermopile
1. Contact local propane/LP or natural gas
company
2. Clean burner
or replace burner orifice
1. Clean burner or replace burner orifice
2. Replace damaged burner
3. Replace gas control
1. Problem will stop after a few hours of
operation
1. Operate burner until air is removed from
line. Have gas line checked by local pro-
pane/LP gas company
2. Clean burner or replace burner orifice
OBSERVED PROBLEM
When ignitor button is pressed, there is
spark at pilot but no ignition
Pilot lights but flame goes out when control
knob is released
Burner does not light after pilot is lit
Delayed ignition burner
Burner backfiring during combustion
Slight smoke or odor during initial operation
Fireplace produces a whistling noise when
burner is lit
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