Model #153336566 KENMORE Water heater, Gas

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How do I replace thermacouple on my water heater? 153336566 Kenmore Water heater


Thank you for choosing and being a valued member. I can certainly assist you.

I did confirm you will need to replace the complete burner assembly because the thermal coupling is not sold separately.

You can also visit for parts, diagrams, and repair information.


If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website: Sears Home Services .

Thank you for your question. Have a great day. 

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Natasha12 -
Sears Technician
May 21, 2015

water heater doesn't work 153336566 Kenmore Water heater


Hello, glad to help.  Thank You for choosing Sears We, at Sears, we value your business.
I am sorry and do understand your frustration when there is problems with the water heater.
Glad to help out.  I’m looking at your Kenmore Water Heater model number 153336566.

The pilot turns on but will not stay lit means usually you need to replace the pilot light because the thermo couple which is what goes bad, is actually a part of the pilot light assembly.

Remove the access door and guard so you can see the burner and pilot. Keep your face 2-3 feet away from the heater in case it flashes.

Without the burner on, look at the pilot flame. The flame should make a rushing sound and the flames should wrap around the thermocouple that the pilot burns on. If it is just touching the thermocouple the pilot burner and thermocouple should be replaced.

Turn the thermostat so the burner lights and watch what the pilot does with the burner on and also what the burner does. The burner flames should be drawn up toward the top of the combustion chamber. If the flame is lazy and just moves around, there is a problem with the vent. If the burner is being pushed down by stacking in the combustion chamber it will cause the pilot to go out.

When the burner lights it draws a large quantity of air to it for combustion and this creates air currents in the combustion chamber. Watch the pilot and see if it stays steady or begins to float around from the air currents. If the pilot floats replace the pilot burner and thermocouple. The reason it floats is it is not burning solidly on top of the pilot orifice. Orifices wear and sometimes change shape making the pilot flame unsteady.

Whenever you repair the water heater, it is best to replace the thermocouple. Thermocouples wear out and should be replaced periodically.

Pilot assembly for the model 153.336566
Thank you for your understanding in this matter and I hope we can help you with your future questions and repairs.  Thank you for choosing Sears and using our

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Larry Jr -
Sears Technician
September 26, 2014

Where to get and How to replace my thermocouple on a powermiser 6 40gal natural gas water heater?


A water heater is definitely something we depend on and when it begins to malfunction it can be a huge inconvenience. While you are waiting for an expert to respond, I have attached some helpful links below that may provide information to assist you with your question.

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Barbara H. -
October 15, 2011

Thank you for your question. The thermocouple itself cannot be replaced. It will require the complete pilot assembly # 9003488. It's available at SearsPartsDirect . The complete burner assembly will need to be taken out to install the pilot assembly. Unless you feel very confident in your repair skills and have a knowledge of this type of burner system, I would not recommend making this repair. When not working properly, a gas water heater can be very dangerous. I would recommend having a technician make this type of repair. I'm listing a site you can access, to have a tech come out. Here is a link for the website: Sears Home Services . If you would like more assistance, reply to this thread and I will be glad to assist you further.

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Scott D -
Sears Technician
October 18, 2011
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