Desa CFFP18NT Owner's Operation And Installation Manual page 21

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
123779-01C
TROUBLEShOOTING
Continued
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
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REMEDY
1. Contact local natural or
propane/LP gas company
2. Clean burner (see Cleaning,
page 18) or replace burner
orifice
1. Clean burner (see Cleaning,
page 18) 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 de-
bris. If found, clean burner
(see Cleaning, page 18)
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 and 11)
4. Clean burner (see Cleaning,
page 18) or replace burner
orifice
1. Turn fireplace off when us-
ing furniture polish, wax,
carpet cleaners or similar
products
1. Refer to Air for Combustion
and Ventilation require-
ments (page 7)
21