26
Thermal
Switch
Thermal Switch Location
PILOT LIGHT TROUBLESHOOTING CHART
Have you bled all the air
from the pilot tube and
gas supply line?
NO
While repeatedly depressing the igniter
button, push in and hold the gas control/
temperature knob until the pilot is lit and
maintains a stable flame, (status light
will blink) then release the gas control/
temperature knob.

Section A: Pilot light will not light (new installation).

Is the manual gas shut-off valve,
located in the supply line to the
water heater, in the on position?
NO
YES
Turn the manual gas shut-off valve to
the on position and follow the lighting
instructions on the front of the water heater.
Is the igniter producing a
spark? YES
NO
Follow the Testing the Igniter System
section in this manual.
Check for insufficient combustion air.
Are the combustion air supply and ventilation openings
of sufficient size? See Combustion Air Supply and
Ventilation section in this manual for requirements.
Is there a furnace/air handler in the same room as the water heater?
Does the return air duct for the furnace/
air handler draw its air from a separate
location than the water heater? See the
Location Requirements section and the
Combustion Air Supply section.
Is there proper drafting at the
drafthood? See Checking the
Draft section in this manual.
NO
Contact a local Heating,
Ventilation, Air-Conditioning
& Refrigeration authorized
service provider to correct
the combustion air supply/
ventilation issue.
Correct size of
openings to allow
sufficient air.
NO
YES
YES
YES
NO
Check the vent
system for restrictions/
obstructions and check
the vent termination
height. Refer to the
Installation Instructions
section of this manual for
specific requirements.
NO

Section C: Pilot light will not remain lit.

Contact Customer Service at the number
located on the front of this manual.
YES
Set thermostat to desired temperature.

Section B: Pilot light repeatedly goes out.

Remove the burner door
assembly. Are the flame-trap and
burner free from debris due to
excessive lint, dirt, dust or oil?
Refer to the Use &
Care Guide section
of this manual for
information on
cleaning the flame-
trap and burner.
NO
YES
Does the diagnostic status light on the
gas control valve/thermostat give
a two flash error code?
Does the flame-trap
show signs of
discoloration?
YES
Shut-off the gas supply to the water heater at the
manual gas shut-off valve, and contact Customer
Service using the number on the cover of this manual.
NO Reassemble the heater, press the thermal
switch, and attempt to return the heater to
service. Does the pilot remain lit?
YES
Set to desired temperature.
NO
YES
Refer to the Replacing the Pilot
Assembly instructions in the manual.
Reassemble and restore to service.
Go to section C.
NO

NOTE: If you are still experiencing diffi culties

after following the steps in sections A, B, and C,

please use the number located on the front of

this manual to contact Customer Service.

NO