Troubleshooting - Coleman Denali 9790 Instructions For Use Manual

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Troubleshooting

Symptom
Burner will not
light or flame
self-
extinguished.
Burner will not
light or flame is
low or flame self-
extinguished.
Yellow flame.
Low heat.
Low heat.
Low heat.
Persistent small
yellow flame.
Sputtering yellow
flame then very
high heat.
Yellow smoky
flame.
Irregular blue
flame.
Irregular blue
flame.
Pump does not
pressurize the
liquid fuel
canister.
Pump does not
pressurize the
liquid fuel
canister.
Problem
Fuel bottle empty.
Little or no pressure in fuel
bottle.
Generator not fully
warmed.
Gas tip plugged.
Incorrect gas tip.
Faulty generator.
Faulty generator.
Incorrect gas tip.
Spider webs, insects, or
other obstruction in the
burner or gas tip.
Gas tip plugged by debris. Remove impingement plate to inspect
Possible damage to
cleaning needle.
Pump seals are dry or
worn.
Pump assembly not fully
seated on liquid fuel
canister.
Solution
Refill fuel bottle 3/4 full with clean and
fresh Coleman® fuel or approved fuels.
Check connections for leaks and pump
20 strokes.
A yellow flame is normal until the
generator warms up. If yellow flame
persists, turn off stove, allow flame to
burn until almost extinguished and re-
open fuel valve. Colder weather or
heavy fuels such as Kerosene require
longer preheat time. Follow lighting
instructions.
Turn flame adjuster back and forth
several times to clean gas tip. Be sure
to use only fresh and clean fuel. If
condition persists, remove gas tip and
use tip-cleaning tool.
Confirm gas tip is correct for fuel used.
Replace with a new generator. This is
a normal periodic maintenance
procedure. The generator life is
dependent on the type of fuel used.
Generator life is extended by using
clean Coleman® fuel.
Replace with a new generator.
Confirm gas tip is correct for fuel used.
Remove impingement plate to inspect
and clean the burner. Turn flame
adjuster back and forth several times to
clean gas tip. If system persists,
remove and inspect gas tip (see
Section 4).
and clean the burner. Turn flame
adjuster back and forth several times to
clean gas tip. If symptom persists,
remove and inspect gas tip (see
Section 4).
Please contact Consumer Services.
Squirt a few drops of oil in the OIL
HOLE in the pump cap. This will keep
the pump functioning properly
(Fig. 43). If this does not correct the
problem, replace the pump seals or
purchase a new pump assembly.
Check pump seal for damage and hand
tighten pump assembly to liquid fuel
canister.
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