1 5
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
B u r n e r ( s ) d o e s n o t l i g h t a f t e r
ODS/pilot is lit.
Delayed ignition of burner(s).
Burner backfiring during combustion.
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 forming within
burner box or on adjacent
walls or furniture.
POSSIBLE CAUSE
1. Burner orifice is clogged.
2. Burner orifice diameter is too small
3. Inlet gas pressure is too low.
1. Manifold pressure is too low.
2. Burner orifice is clogged.
1. Burner orifice is clogged or
damaged.
2. Burner is damaged.
3. Gas regulator is defective.
1. Not enough air.
2. Gas regulator is defective.
1. Residues from manufacturing
processes.
1. Turning control knob to HI position
when burner is cold.
2. Air in gas line.
3. Air passageways on heater are
blocked.
4. Dirty or partially clogged burner
orifice.
1. Metal is expanding while heating or
contracting while cooling.
1. When heated the vapors from
furniture polish, wax, carpet
cleaners, etc. turn into white
powder residue.
REMEDY
1. Clean burner orifice (see
Cleaning
and Maintenance
, Page 13) or
replace burner orifice.
2. Replace burner orifice.
3. Contact local natural gas company.
1. Contact local natural gas company.
2. Clean burner (see
Cleaning and
Maintenance
, Page 13) or replace
burner orifice.
1. Clean burner orifice (see
Clean
ing and Maintenance
, Page 13) or
replace.
2. Replace burner.
3. Replace gas regulator.
1. Check burner for dirt and debris. If
found, clean burner (see
Cleaning
and Maintenance
, Page 13).
2. Replace gas regulator.
1. Problem will stop after a few hours
of operation.
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 gas company.
3. Observe minimumin stallation
clearances (Figure 4, p7).
4. Clean burner (see
Cleaning and
maintenance
, Page13) or replace
burner orifice.
1. This is common with most
heaters. if noise is excessive,
contact qualified service person
1. Turn heater off when using
furniture polish, wax, carpet
cleaner, or similar products.
