28
Problem
Possible Cause
Corrective Action
ODS/pilot lights but flame
goes out when control knob
is released.
1. Control knob is not fully
pressed in.
2. Control knob is not pressed
in long enough.
3. Equipment shut off valve
is not fully open.
4. Thermocouple connection
is loose.
5. Thermocouple damaged.
6. Control valve damaged.
1. Press in control knob fully.
2. After ODS/pilot lights, keep
control knob pressed in 30
seconds.
3. Fully open equipment
shutoff valve.
4. Hand tighten until snug, and
then tighten ¼ turn more.
5. Replace thermocouple.
6. Contact customer service.
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 25) or
contact customer service.
2. Replace burner orifice.
3. Contact your gas supplier.
Delayed ignition of
burner(s).
1. Manifold pressure is too low.
2. Burner orifice is clogged.
1. Contact your gas supplier.
2. Clean burner (see Care and
Maintenance, page 25) or
contact customer service.
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 25) or
Contact customer service.
2. Contact dealer or customer
service.
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 25).
2. Replace gas regulator.
3. Contact your gas supplier.
Gas odor during
combustion.
1. Foreign matter between
control valve and burner.
2. Gas leak. (See Warning
Statement at top of page
27).
1. Take apart gas tubing and
remove foreign matter.
2. Locate and correct all leaks
(see “Checking Gas
Connections,” page 16).
