PILOT LIGHT TROUBLESHOOTING FLOWCHART

 

Does pilot light go out when

 

 

 

 

 

 

Check Draft. (See “Checking the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

button is released?

 

 

 

 

 

 

Draft” section of this manual.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test the thermocouple using the following

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

procedure: Disconnect the thermocouple from the

 

Has the thermal switch

 

 

 

 

 

 

Are the wires from the gas

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

control valve/thermostat firmly

 

 

 

 

 

 

 

Secure connections

 

 

 

gas control valve/thermostat. Using a multimeter

 

 

 

NO

 

 

 

 

 

NO

 

 

 

 

 

 

 

tripped?

 

 

 

 

 

 

 

 

 

 

and attempt a relight.

 

 

with alligator clip leads, attach the red lead to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connected to the switch?

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the body (copper part) of the thermocouple.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Attach the black lead to the end (silver part) of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the thermocouple that connects to the gas control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

valve/thermostat. Follow the instruction to light

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Are the wires damaged

 

 

 

 

 

Is the thermocouple

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

the pilot and watch the voltage readings on the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and/or frayed?

 

 

 

 

connection loose?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

multimeter. After 45 seconds the meter should

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

read 12 millivolts DC or more.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check for insufficient

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tighten the connection

 

 

 

 

 

 

 

 

 

combustion air.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace the gas control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

valve/thermostat.

 

 

 

 

YES

 

Does the thermocouple pass the test?

 

NO

 

Replace the thermocouple.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the base-ring filter clean (i.e., free of lint, dust, or debris)?

YES

NO

Inspect and clean the base-ring filter. Refer to the “External Inspection & Cleaning of the Base-Ring Filter” section of this manual.

Are there openings for make-up air to enter the room?

YES

NO

Install correct size make-up air openings per the “Combustion Air Supply and Ventilation” section in this manual.

Are the openings of sufficient size?

 

 

 

 

 

See “Combustion Air Supply and Ventilation”

 

 

 

 

Correct size of openings to

 

NO

 

 

 

 

 

allow sufficient air.

section in this manual for requirements.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

Is there a furnace/air

NO handler in the same room as the water heater?

YES

Does the return air duct for the furnace/air handler draw

 

 

 

 

 

 

 

 

 

Contact a local Heating, Ventilation, Air

its air from a separate location than the water heater?

 

 

 

 

See the “Location Requirements” and “Combustion Air

 

NO

 

 

Conditioning & Refrigeration authorized

 

 

 

 

Supply and Ventilation” sections in this manual.

 

 

 

 

service provider.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is there proper drafting at the

 

 

 

 

Check the vent system for restrictions/obstructions and check the vent

draft hood? See “Checking the

 

 

 

 

termination height. Refer to the “Installation Instructions” section of this

 

NO

 

 

 

 

Draft” section in this manual.

 

 

 

 

manual for specific requirements.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the flame-arrestor free from

 

 

 

 

Refer to the “Maintenance of Your Water Heater” section of this

 

debris due to excessive lint, dirt,

 

 

 

 

manual for information on cleaning the flame-arrestor.

 

 

NO

 

 

 

 

 

 

dust or oil?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

Check the water heater for a Flammable Vapor (FV) event. Note: it may be necessary to remove the manifold door assembly to visually inspect the water heater. Reference the “Maintenance of your Water Heater” section of this manual for removal instructions.

Is the igniter wire insulation burnt or

 

 

 

 

 

Is the pilot tube

 

 

 

 

Does the flame

 

 

NO

 

NO

 

 

 

 

 

show signs of discoloration?

 

 

 

 

 

damaged?

 

 

 

 

arrestor show signs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

of discoloration and/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

or debris?

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shut-off the gas supply to the water

 

 

 

 

 

 

heater at the manual gas shut-off

 

 

 

 

 

 

valve, then contact Sears Service at

 

 

 

 

 

 

1-800-4-MY-HOME (1-800-469-4663).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

THERMAL

SWITCH

FIGURE 44.

37

Page 37
Image 37
Kenmore 153.331572 owner manual Pilot Light Troubleshooting Flowchart, Yes