Coleman Denali 9790 - Manual (Page 20)

Troubleshooting 19
English-19
Symptom Problem Solution
Burner will not
light or flame
self-
extinguished. Fuel bottle empty. Refill fuel bottle 3/4 full with clean and
fresh Coleman® fuel or approved fuels.
Burner will not
light or flame is
low or flame self-
extinguished. Little or no pressure in fuel
bottle. Check connections for leaks and pump
20 strokes.
Yellow flame. Generator not fully
warmed. 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.
Low heat. Gas tip plugged. 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.
Low heat. Incorrect gas tip. Confirm gas tip is correct for fuel used.
Low heat. Faulty generator. 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.
Persistent small
yellow flame. Faulty generator. Replace with a new generator.
Sputtering yellow
flame then very
high heat. Incorrect gas tip. Confirm gas tip is correct for fuel used.
Yellow smoky
flame. Spider webs, insects, or
other obstruction in the
burner or gas tip. 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).
Irregular blue
flame. Gas tip plugged by debris. Remove impingement plate to inspect
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).
Irregular blue
flame. Possible damage to
cleaning needle. Please contact Consumer Services.
Pump does not
pressurize the
liquid fuel
canister. Pump seals are dry or
worn. 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.
Pump does not
pressurize the
liquid fuel
canister. Pump assembly not fully
seated on liquid fuel
canister. Check pump seal for damage and hand
tighten pump assembly to liquid fuel
canister.