www.desatech.com
121880-01B
19
TRoUBlesHooTING
Continued
POSSIBLE CAUSE
1. Not enough air
2. Gas regulator defective
3. Clogged or dirty burner
1. Residues from manufac
-
turing processes
1. Turning control knob to
position 5 when burner is
cold
2. Air in gas line
3. Air passageways on heat
-
er blocked
4. Dirty or partially clogged
burner orifice
1. When heated, vapors from
furniture polish, wax, car
-
pet cleaner, etc., may turn
into white powder residue
1. Metal expanding while
heating or contracting
while cooling
1. Not enough fresh air is
available
2. Low line pressure
3. ODS/pilot is partially
clogged
OBSERvED PROBLEM
Yellow flame during burner
combustion
Slight smoke or odor during
initial operation
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
Heater shuts off in use (ODS
operates)
REMEDY
1. Check burner for dirt and
debris. If found, clean burner
(see
Cleaning
, page 16)
2. Replace gas regulator
3. Clean burner (see
Cleaning
,
page 16)
1. Problem will stop after a few
hours of operation
1. Turn control knob to posi
-
tion 1 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 Figure
4, page 8)
4. Clean burner (see
Clean-
ing
, page 16) 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
1. Open window and/or door
for ventilation
2. Contact local natural or
propane/LP gas company
3. Clean ODS/pilot (see
Cleaning
, page 16)
