Desa CGMFP - Manual (Page 27)

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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 adjacent
walls or furniture
Moisture/condensation noticed
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 manufacturing
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 fireplace
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/ven-
tilation air
REMEDY
1. Contact local natural or pro-
pane/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 pro-
pane/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 Mainte-
nance, 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 requirements
(page 6)