Desa CGN18RA - Manual (Page 24)

24
101826
TROUBLE-
SHOOTING
Continued
OBSERVED
PROBLEM
Burner(s) does not
light after ODS/pilot
is lit
Delayed ignition of
burner(s)
Burner backfiring
during combustion
Burner plaque(s) does
not glow
Slight smoke or odor
during initial operation
Heater produces a
clicking/ticking noise
just after burner is lit
or shut off
REMEDY
1. Clean burner orifice(s)
(see Cleaning and Main-
tenance, page 22) or re-
place burner orifice(s)
2. Replace burner orifice(s)
3. Contact local natural gas
company
1. Contact local natural gas
company
2. Clean burner orifice(s)
(see Cleaning and Main-
tenance, page 22) or re-
place burner orifice(s)
1. Clean burner orifice(s)
(see Cleaning and Main-
tenance, page 22) or re-
place burner orifice(s)
2. Contact local natural gas
company
3. Replace burner
4. Replace gas regulator
1. Replace burner
2. Contact local natural gas
company
3. Turn control knob until it
locks at desired setting
1. Problem will stop after a
few hours of operation
1. This is common with
most heaters. If noise is
excessive, contact quali-
fied service person
POSSIBLE
CAUSE
1. Burner orifice(s) is
clogged
2. Burner orifice(s)
diameter is too small
3. Inlet gas pressure is
too low
1. Manifold pressure is
too low
2. Burner orifice(s) is
clogged
1. Burner orifice(s) is
clogged or damaged
2. Inlet gas pressure is
too low
3. Burner damaged
4. Gas regulator defective
1. Plaque damaged
2. Inlet gas pressure is
too low
3. Control knob set
between locked
positions
1. Residues from manu-
facturing processes
1. Metal expanding while
heating or contracting
while cooling