Desa VMH10TNC - Manual (Page 33)

www.desatech.com 112462-01B 33
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
Slight smoke or odor during ini-
tial 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. Residues from manufactur-
ing 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. Problem will stop after a few
hours of operation
2. Check burner for dirt and de-
bris. If found, clean burner
(see Cleaning and Mainte-
nance, page 30)
3. Replace gas regulator
1. Turn control knob to LO posi-
tion and let warm up for a
minute
2. Operate burner until air is re-
moved from line. Have gas
line checked by local natural
gas company
3. Observe minimum installation
clearances (see pages 10
through 13)
4. Clean burner (see Cleaning
and Maintenance, page 30) 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 7)