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My heater won't stay lit for an extended period of time. Thermocouple perhaps?

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This sounds like the thermocouple. I would clean the stub end where the pilot flame hits with steel wool. If this does not cure the problem, you may need to replace it. This item can be found at most hardware stores such as Lowes. Be sure to buy the correct length.

Posted on Dec 10, 2016


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SOURCE: charm glow gas heater won't stay lit changed

Dust build up inside the pilot light burner assembly. A clean pilot makes noise and has a blue flame when it is burning. A dirty pilot has a quiet and smaller flame with an orange tip.

Posted on Dec 06, 2009

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SOURCE: Is it o k to bend the thermocouple tip. The only

Bending it will ruin it. You need to find out why the pilot flame is not as strong as it should be.

It is usually caused by bugs or spiders having gotten into the small air mix jet of the pilot assembly and died or built a web or, there is some dirt from the fuel that is partially clogging the fuel tube leading up to the pilot assembly, or plugging the orifice.

Posted on Dec 14, 2009

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SOURCE: My Master propane heater will not stay lit. It

Yes this is probably the thermocouple connection.

Just remove the end of the thermocouple from where is goes into the gas valve and leave the end that goes into the flame in place.

Clean the end of the thermocouple connect by scraping off just a little metal from the end just about there the nut tightens the thermocouple into the gas valve. After you have exposed some new metal do the same inside the valve where the thermocouple seats into the gas valve.
Use a small pic or similar item to scrape inside the gas valve to expose some new metal there also.

Now reassemble the thermocouple into the gas valve and see if the heater works.

Here is a link with some more instructions.


Posted on Oct 10, 2010

  • 120 Answers


are you sure the problem is with the thermocouple? is the pilot sharp and blue? it is unconnon for the magnet in a gas valve to go bad but it does happen. place the thermocouple in the valve and with it in front of you heat it with a match or lighter for 30 sec. now try and light the pilot quickly. if it lights the the problem would be the pilot, if not then the valve. is this a milivolt system or hydrolic t stat.

Posted on Jan 29, 2011

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SOURCE: water heater pilot light will not stay lit.

Hold the pilot button down for a full minute after it lights, then release. If this does not work then the thermocouple is not adjusted where the flame is heating it or you just have a faulty new thermocouple.

Posted on Sep 06, 2011

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