Installation Guide

www.usaprocom.com
27200068-01A
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 24) 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 24) 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 24) 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 24).
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 25).
1. Contact a qualied service
technician to remove foreign
matter.
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 15).
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
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 24) or
replace burner orice.
TROUBLESHOOTING