Full Product Manual

www.usaprocom.com
200239-01A26
Problem Possible Cause Corrective Action
Burner does not light after
ODS/pilot is lit.
1. Burner orice is clogged.
2. Burner orice diameter is too
small.
3. Inlet gas pressure is too low.
1. Clean burner orifice (see
Care and Maintenance, page
22) or replace burner orice.
2. Replace burner orice.
3. Contact local gas supplier.
Delayed ignition of
burner.
1. Manifold pressure is too low.
2. Burner orice is clogged.
1. Contact local gas supplier.
2. Clean burner (see Care and
Maintenance, page 22) or
replace burner orice.
Burner backring during
combustion.
1. Burner orice is clogged or
damaged.
2. Burner is damaged.
3. Gas regulator is damaged.
1. Clean burner orifice (see
Care and Maintenance, page
22) or replace burner orice.
2. Replace burner.
3. Replace gas regulator.
Yellow ame during burn-
er 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 22).
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. Contact a qualied service tech-
nician to remove foreign matter.
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 17).
Slight smoke or odor
during 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
position when burner is cold.
2. Air in gas line.
3. Air passageways on heater
are blocked.
4. Dirty or partially clogged
burner orice.
1. Turn control knob to low
position and let warm up for
a minute.
2. Operate burner until air is re-
moved from line. Have gas line
checked by local gas supplier.
3 Observe minimum installation
clearances (Figure 4, page 10).
4 Clean burner (see Care and
Maintenance, page 22) or
replace burner orice.
TROUBLESHOOTING