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www.usaprocom.com
200204-01B26
TROUBLESHOOTING
Problem Possible Cause Corrective Action
Burner(s) does not light
after ODS/pilot is lit
1. Burner orice is clogged.
2. Inlet gas pressure is too low.
1. Clean burner orifice (see
Care and Maintenance,
page 22).
2. Contact local gas supplier.
Delayed ignition of
burner(s).
1. Manifold pressure is too low.
2. Burner orice is clogged.
1. Contact local gas supplier.
2. Clean burner (see Care and
Maintenance, page 22).
Burner backring during
combustion.
1. Burner orice is clogged or
damaged.
2. Burner is damaged.
3. Gas regulator is damaged.
1. Clean burner orifice (see
Care and Maintenance,
page 22).
2. Contact dealer or customer
service.
3. Replace gas regulator.
High yellow ame 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 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. Take apart gas tubing and
remove foreign matter.
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 14).
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 orice.
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 6,
page 9)
4 Clean burner (see Care and
Maintenance, page 22).
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 qualied ser-
vice technician.
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