Desa VYM27NR - Manual (Page 24)

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TROUbLESHOOTING
Continued
OBSERVED PROBLEM
Moisture/condensation noticed
on windows
Heater produces a whistling noise
when burner is lit
White powder residue forming
within burner box or on adjacent
walls or furniture
Remote does not function
Heater produces a clicking/tick-
ing noise just after burner is lit
or shut off
Heater produces unwanted
odors
Heater shuts off in use (ODS
operates)
Gas odor even when control knob
is in OFF position
POSSIBLE CAUSE
1. Not enough combustion/ven-
tilation air
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. 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
1. Heater burning vapors from
paint, hair spray, glues, clean-
ers, chemicals, new carpet, etc.
(See IMPORTANT statement
above)
2. Gas leak. See Warning state-
ment at top of page 25
1. Not enough fresh air is avail-
able
2. Low line pressure
3. ODS/pilot is partially
clogged
1. Gas leak. See Warning state-
ment at top of page 25
2. Control valve defective
REMEDY
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
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
or propane/LP gas company
3. Observe minimum installa-
tion clearances (see pages 8
through 11)
4. Clean burner (see Cleaning
and Maintenance, page 20) or
replace burner orifice
1. Turn heater off when using
furniture polish, wax, carpet
cleaners, or similar products
1. Replace 9-volt batteries in re-
ceiver and hand-held remote
1. This is common with most heat-
ers. If noise is excessive, contact
qualified service person
1. Open window and ventilate
room. Stop using odor caus-
ing products while heater is
running
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 14)
1. Open window and/or door for
ventilation
2. Contact local natural or pro-
pane/LP gas company
3. Clean ODS/pilot (see Cleaning
and Maintenance, page 20)
1. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 14)
2. Replace control valve