Desa GWN6 Installation Manual page 18

OBSERVED PROBLEM
Yellow flame during burner
combustion
Slight smoke or odor during
initial operation
Heater produces a whistling
noise when burner is lit
Heater produces a clicking/
ticking noise just after burner
is lit or shut off
White powder residue form-
ing within burner box or on
adjacent walls or furniture
18
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Not enough air
2. Inlet gas pressure is too low
3. Gas regulator defective
1. Residues from manufactur-
ing processes
1. Turning control knob to
highest position when burn-
er is cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partially clogged
burner orifice
1. Metal expanding while heat-
ing or contracting while
cooling
1. When heated, vapors from
furniture polish, wax, carpet
cleaner, etc., may turn into
white powder residue
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REMEDY
1. Check burner for dirt and
debris. If found, clean
burner (see Cleaning and
Maintenance, page 15)
2. Contact local natural or
propane/LP gas company
3. Replace gas regulator
1. Problem will stop after a few
hours of operation
1. Turn control knob to lowest
position and let warm up for
a minute
2. Operate burner until air is
removed from line. Have gas
checked by local natural or
propane/LP gas company
3. Observe minimum installa-
tion clearances (see Figure
4, page 8)
4. Clean burner (see Cleaning
and Maintenance, page 15)
or replace burner orifice
1. This is normal with most
heaters. If noise is exces-
sive, contact qualified ser-
vice person
1. Turn heater off when us-
ing furniture polish, wax,
carpet cleaners or similar
products
117001-01E