www.fmiproducts.com
125784-01D
42
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
1. Manifold pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or dam
-
aged
2. Damaged burner
3. Gas regulator defective
1. Not enough air
2. Gas regulator defective
1. Residues from manufacturing
processes and logs curing
1. Set the unit to HI by using the
remote when burners are cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partially clogged burner
orifice(s)
1. When heated, vapors from furni
-
ture polish, wax, carpet cleaners,
etc. may turn into white powder
residue
1. Not enough combustion/ventila-
tion air
1. Metal expanding while heating or
contracting while cooling
REMEDY
1. Contact local natural or propane/
LP gas company
2. Clean burner(s) (see
Cleaning
and Maintenance
, page 34) or
replace burner orifice(s)
3. Contact qualified service person
1. Contact local natural or propane/
LP gas company
2. Clean burner(s) (see
Cleaning
and Maintenance
, page 34) or
replace burner orifice(s)
3. Contact qualified service person
1. Clean burner (see
Cleaning and
Maintenance
, page 34) or replace
burner orifice
2. Replace damaged burner
3. Replace gas regulator
1. Check burner(s) for dirt and debris. If
found, clean burner(s) (see
Cleaning
and Maintenance
, page 34)
2. Replace gas regulator
1. Problem will stop after a few hours
of operation
1. Set the unit to LO by using the
remote and let warm up for a
minute
2. Operate burners until air is re-
moved from line. Have gas line
checked by local natural or pro-
pane/LP gas company
3. Observe minimum installation
clearances (see pages 9 through
12)
4. Clean burners (see
Cleaning and
Maintenance
, page 34) or replace
burner orifice(s)
1. Turn heater off when using furni-
ture polish, wax, carpet cleaners
or similar products
1. Refer to
Air for Combustion and
Ventilation
requirements (page 6)
1. This is normal with most heaters.
If noise is excessive, contact
qualified service person
OBSERVED PROBLEM
Burners do not light after ODS/
pilot is lit
Delayed ignition of one or both
burners
Burner backfiring during combustion
Yellow flame in middle burner during
burner combustion
Slight smoke or odor during initial
operation
Heater produces a whistling noise
when burners are lit
White powder residue forming within
burner box or on adjacent walls or
furniture
Moisture/condensation noticed on
windows
Heater produces a clicking/ticking
noise just after burners are lit or
shut off
