www.sureheat.com
200211-01A
26
TROUBLESHOOTING
Problem
Possible Cause
Corrective Action
Burner(s) does not light
after ODS/pilot is lit.
1. Burner orifice is clogged.
2. Burner orifice diameter is too
small.
3. Inlet gas pressure is too low.
1. Clean burner orifice (see
Care and Maintenance
, page
23) or replace burner orifice.
2. Replace burner orifice.
3. Contact local gas supplier.
Delayed ignition of
burner(s).
1. Manifold pressure is too low.
2. Burner orifice is clogged.
1. Contact local gas supplier.
2. Clean burner (see
Care and
Maintenance
, page 23) or
replace burner orifice.
Burner backfiring during
combustion.
1. Burner orifice is clogged or
damaged.
2. Burner is damaged.
3. Gas regulator is damaged.
1. Clean burner orifice (see
Care and Maintenance
, page
23) or replace burner orifice.
2. Replace burner.
3. Replace gas regulator.
High yellow flame during
burner combustion.
1. Not enough air.
2. Gas regulator is defective.
3. Inlet gas pressure is too low.
1. Check burner for dirt and
debris. If found, clean burner
(see
Care and Maintenance
,
page 23).
2. Replace gas regulator.
3. Contact local gas supplier.
Gas odor during com-
bustion.
1. Foreign matter between
control valve and burner.
2. Gas leak. (See
Warning
Statement
at top of page 24).
1. Take apart gas tubing and
remove foreign matter.
2. Locate and correct all leaks
(see
Checking Gas Connec-
tions
, page 16).
Slight smoke or odor dur-
ing initial operation.
1. Residues from manufactur-
ing process.
1. Problem will stop after a few
hours of operation.
Heater produces a whis-
tling noise when burner
is lit.
1. Turning control knob to high
(5) 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. Turn control knob to low (1)
position and let warm up for
a minute.
2. Operate burner until air is
removed from line. Have gas
line checked by local gas
supplier.
3 Observe minimum installa-
tion clearances (Figure 4,
page 9).
4 Clean burner (see
Care and
Maintenance
, page 23) or
replace burner orifice.
Heater produces a click-
ing/ticking noise just after
burner is lit or shut off.
1. Metal is expanding while
heating or contracting while
cooling.
1. This is common with most
heaters. If noise is exces-
sive, contact qualified ser-
vice technician.
White powder residue
forming within burner
box or on adjacent walls
or furniture.
1. When heated, the vapors
from furniture polish, wax,
carpet cleaners, etc., turn
into white powder residue.
1. Turn heater off when using
furniture polish, wax, carpet
cleaner or similar products.
