Kenmore 57240 User Manual download pdf (Page 41)

FIGURE 44.

NOTE: If you are still experiencing difﬁ culties

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

please contact Sears Service at 1-800-MY-HOME

(1-800-469-4663).

THERMAL

SWITCH

THERMAL SWITCH LOCATION

PILOT LIGHT TROUBLESHOOTING FLOWCHART

Have you bled all the air

from the pilot tube and

gas supply line?

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). It may take up to 90 seconds of

pilot operation before status light blinks.

Once status light blinks, 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?

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

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.

Does the return air duct for the furnace/

air handler/air conditioner draw its air from

the same location as 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.

Contact a Heating and Air

Conditioning service technician

to relocate the return air duct.

The water heater’s pilot can be

extinguished when the heating

or cooling system is turned on

if the return air duct is in the

same location.

Correct size of

openings to allow

sufficient air.

YES

Section C: Pilot light will not remain lit.

Complete this section after completing Section B.

YES

Set thermostat to desired temperature.

Section B: Pilot light repeatedly goes out.

Check the Base-Ring Filter and

Flame Arrestor for blockage due

to lint or dust. Are both the Air

Filter and Flame Arrestor clean?

Refer to the “Maintenance of

your Water Heater” section of this

manual for information on cleaning

the flame arrestor and burner.

YES

Does the diagnostic status light on the

gas control valve/thermostat give

a two flash error code?

Does the flame

arrestor show signs

of discoloration?

YES

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.

YES

Refer to the “Replacing the Pilot

Assembly” instructions in the manual.

Reassemble and restore to service.

Go to section C.

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.

YES

If you are still having difficulty keeping the pilot

lit, Contact Sears at 1-844-553-6667 to request

service.

YES

Shut-off the gas supply to the water heater at the

manual gas shut-off valve, and contact Sears Service

at 1-844-553-6667.

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Kenmore 57240 User Manual Page 41

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