Desa Comfort Glow S26NTA Owner's Operation And Installation Manual page 20

OBSERVED PROBLEM
Heater produces a whistling
noise when burner is lit
Dark residue on logs or inside
of fireplace
White powder residue forming
within burner box or on adjacent
walls or furniture
Heater produces a clicking/tick-
ing noise just after burner is lit
or shut off
0
TROUBLEShOOTING
Continued
POSSIBLE CAUSE
1. Turning control knob to HI
position when burner is cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partially clogged
burner orifice
1. Improper log placement
2. Drafts or other air currents
affecting flame pattern
3. Air holes at burner inlet
blocked
4. Burner flame holes blocked
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Metal expanding while heating
or contracting while cooling
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REMEDY
1. Turn control knob to LO
position and let warm up for
a minute
2. Operate burner until air is re-
moved from line. Have gas line
checked by local gas company
3. Observe minimum installation
clearances (see page 8)
4. Clean burner (see Cleaning
and Maintenance, page 16)
or replace burner orifice
1. Properly locate logs (see In-
stalling Logs, page 11)
2. Eliminate source of drafts
around heater
3. Clean out air holes at burner
inlet. Periodically repeat as
needed
4. Remove blockage or replace
burner
1. Turn heater off when using
furniture polish, wax, carpet
cleaners or similar products
1. This is normal with most heat-
ers. If noise is excessive, contact
qualified service person
110361-01G