Monessen Hearth VFCS20DNV Manuale Utente
30
58D6002
TROUBLESHOOTING
W
ARNING
If the gas quality is bad, your pilot may not stay lit, the burners may produce soot and
the heater may backfire when lit. If the gas quality or pressure is low, contact your
local gas supplier immediately.
SYMPTOM
POSSIBLE CAUSE
ACTION
ODS/pilot
lights, but
flame goes out
when con-
trol knob is
released.
1. Control knob not fully pressed
in.
1. Press in control knob fully.
2. Control knob not pressed in
long enough.
2. After ODS/pilot lights, keep control knob pressed in for 30 seconds.
3. Appliance shutoff valve not
fully open.
3. Fully open manual shutoff valve.
4. Thermocouple connection loose
at control valve.
4. Hand tighten thermocouple connection until snug, then tighten 1/4 turn
more.
5. Pilot flame not touching ther-
mocouple, which allows ther-
mocouple to cool, causing pilot
flame to go out.
5. Contact local gas company. This problem could be caused by either low gas
pressure, or a dirty or partially clogged ODS/pilot.
6. Thermocouple damaged.
6. Replace pilot.
Burner does
not light after
ODS/pilot is
lit.
1. Inlet gas pressure is too low.
1. Contact qualified service person.
2. Burner orifice diameter is too
small.
2. Replace burner orifice.
3. Burner orifice is clogged.
3. Burner orifice is clogged.
Burner back-
fires during
combustion.
1. Manifold pressure is too low.
1. Contact local gas company.
2. Burner orifice is clogged.
2. Clean burner or replace burner orifice.
Slight smoke
or odor during
initial opera-
tion.
1. Burner orifice is clogged or
damaged.
2. Replace burner.
2. Burner is damaged.
2. Replace burner.
3. Gas regulator defective.
3. Replace gas regulator.
Logs appear
to smoke after
initial opera-
tion.
1. Vapors from paint or curing process
of logs.
1. Problem will stop after a few hours of operation. Open a window for the first
few hours.
2. Log heater is intended to be smokeless. Turn OFF heater and call qualified
service person.
Heater pro-
duces a whis-
t l i n g n o i s e
when burner
is lit.
1. Vapors from paint or curing process
of logs.
1. Problem will stop after a few hours of operation. Open a window for the first
few hours.
2. Air in gas line.
2. Operate burner until air is removed from line. Have gas line checked by local
gas company.
3. Dirty or partially clogged burner
orifices.
3. Clean burner or replace burner orifice.
No gas to pilot. 1. LP-regulator shut down due to
inlet pressure too high.
1. Verify LP tank regulator is installed and set at 11" to 13" w.c.