Desa LMFP33NR(A) Owner's Operation And Installation Manual page 27

OBSERVED PROBLEM
Moisture/condensation noticed
on windows
Heater produces a whistling
noise when burners are lit
White powder residue forming
within burner box or on adjacent
walls or furniture
Remote does not function
Fireplace produces a clicking/
ticking noise just after burner
is lit or shut off
111604-01H
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Not enough combustion/ven-
tilation air
1. Turning control knob to HI po-
sition when burners are cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partially clogged
burner orifice(s)
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. may turn into
white powder residue
1. Battery is not installed. Battery
power is low
1. Metal expanding while heating
or contracting while cooling
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REMEDY
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
1. Turn control knob to LO po-
sition and let warm up for a
minute
2. Operate burners until air is
removed from line. Have gas
line checked by local natural
or propane/LP gas company
3. Observe minimum installation
clearances (see page 9)
4. Clean burners (see Cleaning
and Maintenance, page 23) or
replace burner orifice(s)
1. Turn heater off when using
furniture polish, wax, carpet
cleaners, or similar products
1. Replace 9-volt batteries in
receiver and remote control
1. This is common with most heat-
ers. If noise is excessive, contact
qualified service person
27