ComfortFlame.US.com
900555-00 NC
21
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Burner doesn't light after ODS/pilot is lit
1. Burner orifice clogged
2. Inlet gas pressure is too low
1. Clean burner
(see Cleaning and Maintenance,
page 17
)
or replace burner orifice
2. Contact local propane/LP or natural gas com-
pany
Delayed ignition of burner
1. Manifold pressure is too low
2. Burner orifice clogged
1. Contact local propane/LP or natural gas com-
pany
2. Clean burner
(see Cleaning and Maintenance,
page 17
)
or replace burner orifice
Burner backfiring during combustion
1. Burner orifice is clogged or damaged
2. Damaged burner
3. Gas regulator defective
1. Clean burner
(see Cleaning and Maintenance,
page 17
)
or replace burner orifice
2. Replace damaged burner
3. Replace gas regulator
Slight smoke or odor during initial operation
1. Not enough air
2. Gas regulator defective
3. Residues from manufacturing processes and
logs curing
1. Check burner for dirt and debris. If found, clean
burner
(see Cleaning and Maintenance,
page 17
)
2. Replace gas regulator
3. Problem will stop after a few hours of operation
Moisture/condensation noticed on windows
1. Not enough combustion/ventilation air
1. Refer to
Air for Combustion and Ventilation
requirements
(
page 5
)
Heater produces a whistling noise when burner is lit 1. Turning control knob to HI or position 5 when
burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orifice
1. Turn control knob to LO or position 1 and let
warm up for a minute
2. Operate burner until air is removed from line.
Have gas line checked by local propane/LP or
natural gas company
3. Observe minimum installation clearances
(see
pages 8-10
)
4. Clean burner (see
Cleaning and Maintenance
,
page 17
)
or replace burner orifice
White powder residue forming within burner box
or on adjacent walls or furniture
1. When heated, vapors from furniture polish,
wax, carpet cleaners, etc. may turn into white
powder residue
1. Turn heater off when using furniture polish,
wax, carpet cleaners or similar products
Heater produces a clicking/ticking noise just after
burner is lit or shut off
1. Metal expanding while heating or contracting
while cooling
1. This is normal with most heaters. If noise is
excessive, contact qualified service person
Heater produces unwanted odors
1. Heater burning vapors from paint, hair spray,
glues, cleaners, chemicals, new carpet, etc.
(See
IMPORTANT
statement
on
page 20
)
2. Gas leak.
See Warning statements on
page 20
.
1. Open window and ventilate room. Stop using
odor causing products while heater is running
2. Locate and correct all leaks (see
Checking Gas
Connections
,
page 13
)
Heater shuts off in use (ODS operates) tempera-
ture drops to a lower than ideal level before log
set comes back on
1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
1. Open window and/or door for ventilation
2. Contact local propane/LP or natural gas com-
pany
3. Clean ODS/pilot
(see Cleaning and Maintenance,
page 17
)
Gas odor even when control knob is in OFF position 1. Gas leak.
See Warning statements on
page 20
2. Control valve defective
1. Locate and correct all leaks
(see Checking Gas
Connections,
page 13
)
2. Replace control valve
Gas odor during combustion
1. Foreign matter between control valve and
burner
2. Gas leak.
See Warning statements on
page 20
1. Take apart gas tubing and remove foreign mat-
ter
2. Locate and correct all leaks
(see Checking Gas
Connections,
page 13
)
Logs set cycles to pilot, but room temperature
drops to a lower than ideal level before log set
comes back on
1. Thermostat sensing bulb needs to be reposi-
tioned
1. Reposition thermostat sensing bulb
(see Op-
tional Positioning of Thermostat Sensing Bulb,
beginning on
page 22
)
