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Thermocoupler won't stay lit

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Thermocoupler won't stay lit CJ 07-07-2006
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Posted by CJ on July 7, 2006, 12:47 pm
I live in the mountains of NM. We have gotten about 4-5 inches of rain in
the past 3 days. Yesterday my gas water heater stopped staying lit. I relit
it last night and it was out again this morning.

Can an extreme humidity make the thermocoupler keep going out?



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Posted by tom on July 7, 2006, 1:02 pm
Highly doubtful. I'd replace the thermocouple first. Maybe clean the
burners and pilot while you're at it. It's not expensive. Tom
CJ wrote:
> I live in the mountains of NM. We have gotten about 4-5 inches of rain in
> the past 3 days. Yesterday my gas water heater stopped staying lit. I relit
> it last night and it was out again this morning.
>
> Can an extreme humidity make the thermocoupler keep going out?


Posted by Eric in North TX on July 7, 2006, 1:04 pm
I'm assuming you mean the pilot. The only times I've had that problem
was windy days with insufficient baffling in the chimney pipe, and when
I had a bad thermocouple, but that usually prevents lighting it at all.


CJ wrote:
> I live in the mountains of NM. We have gotten about 4-5 inches of rain in
> the past 3 days. Yesterday my gas water heater stopped staying lit. I relit
> it last night and it was out again this morning.
>
> Can an extreme humidity make the thermocoupler keep going out?


Posted by CJ on July 7, 2006, 1:39 pm
Checked burner flame, was burning very yellow and there was a black mass on
the side of the burner. Started cleaning the burner with my shop vac and
discovered an unburnt mouse nose on the floor of the water heater. I am
wonder if a mouse fell through the exhaust vent onto the burner trying to
get out of the rain, and burned to a crisp.

Since I cleaned it, it is burning blue and staying lit. So far so good.

> I'm assuming you mean the pilot. The only times I've had that problem
> was windy days with insufficient baffling in the chimney pipe, and when
> I had a bad thermocouple, but that usually prevents lighting it at all.
>
>
> CJ wrote:
>> I live in the mountains of NM. We have gotten about 4-5 inches of rain in
>> the past 3 days. Yesterday my gas water heater stopped staying lit. I
>> relit
>> it last night and it was out again this morning.
>>
>> Can an extreme humidity make the thermocoupler keep going out?
>



Posted by professorpaul on July 7, 2006, 3:42 pm
There has to be a joke in there somewhere....


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