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Kenmore Power miser 6 water heater. Pilot light goes out periodically. Have replaced thermal couple.

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  • Peter Wood May 29, 2010

    Thanks,
    I'll give that a try.
    Pete

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If you know positively that the thermal coupler you install is good then there are other possibilities. The vent could be clogged with soot or another obstruction such as a dead bird or squirrel, which will cause the pilot outages. Make sure the water heater is in an area that is not sealed as in a closet. It must have a flow of oxygen or it will go out. Some homes are so tight and when the water heater is in a room with the door shut it will not function properly. Back to the thermal coupler, it can be the pilot light is not touching the TC bulb. It must be touching the bulb and not above or below or barely touching the bulb. Also make sure the pilot light is adjusted properly. If it is too small then a draft can blow it out. There is a small screw to adjust it. Lastly the thermostat can be bad. It will cause the water heater to overheat and the pilot will shut off.

Posted on May 28, 2010

  • Peter Wood May 28, 2010

    The thermo couple is about 1/4" into the pilot light flame. The flame itself is approx 3/4" wide by 1/2" high. I couldn't find an adjustment on the regulator body. We replaced the thermocouple about 6 weeks ago, the problem came back about a week ago. Flue is clear and the water heater is in the garage on an 18" tall stand. Should we change out the thermo couple again to eliminate that variable?


    Thanks for your help.
    Peter Wood

  • NOT ME May 28, 2010

    Everything you describe appears to be normal. You have a good size pilot touching the bulb. I would change the thermo coupler again. It worked for a few days so it seems the new thermo coupler has went bad. If that does not fix the issue then the thermostat is very suspect. If you find it is the thermostat, look for a used one. A new one will cost about as much as a new water heater.

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