Desa VyS18NC - Manual (Page 23)

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TROUbLESHOOTING
Continued
OBSERVED PROBLEM
Slight smoke or odor during
initial operation
Moisture/condensation no-
ticed on windows
Heater produces a whistling
noise when burner is lit
White powder residue forming
within burner box or on adja-
cent walls or furniture
Heater produces a clicking/
ticking noise just after burner
is lit or shut off
REMEDY
1. Check burner for dirt and
debris. If found, clean
burner (see Cleaning and
Maintenance, page 19)
2. Replace gas regulator
3. Problem will stop after a few
hours of operation
1. Refer to Air for Combustion
and Ventilation require-
ments (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 instal-
lation clearances (see
page 8)
4. Clean burner (see Cleaning
and Maintenance, page 19)
or replace burner orifice
1. Turn heater off when us-
ing furniture polish, wax,
carpet cleaners or similar
products
1. This is normal with most
heaters. If noise is exces-
sive, contact qualified ser-
vice person
POSSIBLE CAUSE
1. Not enough air
2. Gas regulator defective
3. Residues from manufac-
turing processes and log
curing
1. Not enough combustion/
ventilation 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
a white powder residue
1. Metal expanding while
heating or contracting while
cooling