American Water Heater 318935-003 Pilot Light Troubleshooting Chart, Service, spark?

PILOT LIGHT TROUBLESHOOTING CHART

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

Section C: Pilot light will not remain lit.

Is the manual gas shut-off valve, located in the supply line to the water heater, in the on position?

YES

Have you bled all the air
from the pilot tube and		NO
gas supply line?
	YES

	Turn the manual gas shut-off valve to
	the on position and follow the lighting
NO
	instructions on the front of the water heater.

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.

Check for insufficient combustion air.

Are the combustion air supply and ventilation openings
			Correct size of
of sufficient size? See “Combustion Air Supply and		NO
			openings to allow
Ventilation” section in this manual for requirements.
			sufficient air.
	YES

NO Is there a furnace/air handler in the same room as the water heater?

YES

Is the igniter producing a
		YES
spark?
	NO

Follow the “Testing the Igniter	Set thermostat to desired temperature.
System” section in this manual.

Section B: Pilot light repeatedly goes out.

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.

YES

Is there proper drafting at the drafthood? See “Checking the NO Draft” section in this manual.

YES

	Contact a local Heating,
	Ventilation, Air-Conditioning
NO
	& Refrigeration authorized
	service provider to correct
	the combustion air supply/
	ventilation issue.

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.

Remove the burner door					Refer to the “Maintenance of
assembly. Are the flame-trap and					your Water Heater” section of this
				NO
burner free from debris due to					manual for information on cleaning
excessive lint, dirt, dust or oil?					the flame-trap and burner.
	YES
Does the flame-trap			Reassemble the heater and attempt to
show signs of		NO
			return the heater to service. Does the
discoloration?
			pilot remain lit?
	YES
						YES	NO

Shut-off the gas supply to the water heater at the manual gas shut-off valve, use the number on the cover of this manual to contact Customer Service.

Reference the number on the cover of this manual for service information.

NOTE: If you are still experiencing difficulties after following the steps in sections A, B, and C, use the number on the cover of this manual to contact Customer

Service.

NO

Go to section C.

Set to desired temperature.

Does the diagnostic status light on the gas control valve/thermostat give

a two flash error code?

YES

Refer to the “Replacing the Pilot Assembly” instructions in the manual.

Reassemble and restore to service.

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