FMI CGMFN - Manual (Page 27)

www.fmiproducts.com 119315-01D 27
TRoUBlEshooTiNG
Continued
ObSERVED PRObLEM
Delayed ignition of burner
Burner backfiring during com-
bustion
Slight smoke or odor during
initial operation
Fireplace produces a whistling
noise when burner is lit
White powder residue forming
within burner box or on adja-
cent walls or furniture
Moisture/condensation no-
ticed on windows
POSSIbLE CAUSE
1. Manifold pressure is too
low
2. Burner orifice is clogged
1. Burner orifice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
4. Inlet gas pressure is too
low
1. Residues from manufac-
turing processes and log
curing
2. Not enough air
3. Gas regulator defective
1. Turning control knob to HI
position when burner is
cold
2. Air in gas line
3. Air passageways on fire-
place blocked
4. Dirty or partially clogged
burner orifice
1. When heated, vapors
from furniture polish, wax,
carpet cleaners, etc. may
turn into white powder
residue
1. Not enough combustion/
ventilation air
REMEDY
1. Contact local natural or
propane/LP gas company
2. Clean burner (see Cleaning
and Maintenance, page 24)
or replace burner orifice
1. Clean burner (see Cleaning
and Maintenance, page 24)
or replace burner orifice
2. Replace damaged burner
3. Replace gas regulator
4. Contact local natural or
propane/LP gas company
1. Problem will stop after a few
hours of operation
2. Check burner for dirt and
debris. If found, clean
burner (see Cleaning and
Maintenance, page 24)
3. Replace gas regulator
1. Turn control knob to LO
position and let warm up
for a minute
2. Operate burner until air is
removed from line. Have
gas line checked by local
natural gas company
3. Observe minimum installa-
tion clearances (see pages
10 through 13)
4. Clean burner (see Cleaning
and Maintenance, page 24)
or replace burner orifice
1. Turn fireplace off when
using furniture polish, wax,
carpet cleaners or similar
products
1. Refer to Air for Combustion
and Ventilation require-
ments (page 6)