Desa Unvented (Vent-Free) Gas Compact Classic Hearth Fireplace VMH26NRB Owner's Operation And Installation Manual page 32

ObSERVED PRObLEM
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 noticed
on windows
32
TROUBLESHOOTING
Continued
POSSIbLE CAUSE
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. 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 28)
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 instal-
lation clearances (see
page 10)
4. Clean burner (see Cleaning
and Maintenance, page 28)
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)
113110-01H