Question about Rheem 40 Gallon FVR NATGAS Low WATER HEATER 6YR 22V40SF

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Pilot lite went out and will not relite

Pilotflame ignites only when lite button is depressed

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I have a Craftsmaster 50 gallon hot water heater. I've replaced the whole inside part and it run about 12 hours and went out and the pilot light goes out when you release the part you hold down for so many seconds and its not the orifice, it's been checked.

Posted on Jul 19, 2010

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The thermocouple is not functioning. The t/c is the small (sensor) tube that the flame touches and should have a small copper tube (capillary) extending to the gas valve. (IMPORTANT: The capillary tube should not have any kinks or crimped places...Only gentle bends. A crimped tube will require t/c replacement.) The flame will deposit a coating (minerals) that will insulate the t/c and prevent it from working. Clean the sensor with steel wool, fine sand paper (emery board) or scotch pad. Now try to relight the pilot making sure the t/c sensor is contacted by the flame, if not, shut off gas and adjust. Once aligned and contacted by pilot flame, hold for a minute, allowing the t/c to warm up fully and signal the gas valve to operate when knob is turned from pilot to operate.

Posted on Jul 18, 2010

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1 Answer

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you were lucky as it could have blown you out of the room
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It depends on many factors, including brand, type of heater, age, gas pressure, maintenance, venting, proper installation of thermocouple, bad thermocouple, air intake cleaning, if the flame is clear blue etc.
Copy following link to read more:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#pilot

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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My hot water tanks pilot light turns off after I have relit it. It stayed on while heating the water in the tank and once it stopped heating the pilot light went out again. What would be causing my...


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Jul 03, 2009 | Water Heaters

1 Answer

Pilot went out and wont re lite


hi there i come from the uk, but it sounds to me as though it maynot be a thermocouple as if it was the pilot would light when you held it in & go out when you let it go.
it seems to me as though the pilot injector could be blocked no gas getting through to it ? or possibly there is a break in the insulation of the igniter so that when you try & light it it just earths out to the heaters metalwork.

These are just a few ideas that might shed some light on your problem?

Kindly

Richie

Dec 15, 2008 | Water Heaters

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