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Thread: Water Heater Burner Knocks out Pilot...

  1. #1

    Default Water Heater Burner Knocks out Pilot...

    Hello All

    Well my gas water heater pilot light will not stay lit and I did a bit of investigating and I think I found the problem but I do not know how to fix it. Apparently when the burner comes on the pilot light goes out. After lighting the pilot I will slowly turn the temperature know up until the burner lights. Then when I turn the temperature know down the burner shuts off but the pilot is out. When lite the pilot flame is a good strong blue with some slight orange hitting the tip of the thermocouple.

    What can I do?

    Thanks again.

  2. #2
    In the Trades Gary Swart's Avatar
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    Default

    New thermocoupler.

  3. #3

    Default New Thermocouple

    Thanks but I have already replaced the thermocouple.

  4. #4
    General Contractor Carpenter toolaholic's Avatar
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    Default adjust the pilot lite flame up higher, if possible

    some gas appliances have a small ajusting screw. look on the regulator out front. also tighten, if necessary the small pilot fitting going in to same control

  5. #5
    DIY Senior Member thezster's Avatar
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    Default

    Had a similar problem last year - it required replacing the thermocoupler - twice....... first one was defective...

    Though it sounds as if the burner lighting up is blowing out the pilot - and it's not re-lighting
    It's 9a.m. Let's have a beer!

  6. #6
    Master Plumber master plumber mark's Avatar
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    Talking New gas teromstat

    the high limit switch is burnt out in the gas thremostat.

    they cannot be repaired ,
    and arent meant to be messed with
    so you need a whole new gas thermostat

    costs about 65 bucks...


    what brand of water heater is it???

    if you got a whirlpool, it might be trouble...

    a small tip

    remember to turn water off first before unscrewing valve..
    Last edited by master plumber mark; 09-01-2005 at 05:26 AM.

  7. #7

    Default

    Thezster,

    Yes you are correct the burner lighting up is blowing out the pilot and it is not re-lighting.

    MPM:

    Why do you think the high limit switch is burnt out in the gas thremostat? I thought that a burn out high limit switch would keep the burner and pilot from even lighting up? BTW it unit is a very basic 40gallon shorty State Select water heater ~8-9 years old.

    Thanks you for the responses

  8. #8
    Master Plumber master plumber mark's Avatar
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    Talking I see it every day

    Again I ask

    WHAT BRAND ARE YOU TALKING ABOUT?????????


    If the thermocoupling wont work its just the next step..to try...

    ----barring some exotic vent problem
    you see once in a blue moon... or

    you could have a bad orfice in the burner assembly,
    but usually we only see that kind of problem it the unit
    has been under water


    you got to just assume its the hermostat that is the problem..

    They cant be repaired
    so you just got to trust that its the problem....
    it cant be anything else, cause their isnt anything
    else it can be


    we just went down this road today....with a Bradford White unit

    changed out a thermocoupling a few weeks ago now its
    going out again....sent one of my guys down ther ewith
    a thermostat and changed it out....


    its all trial and error.. good luck...
    Last edited by master plumber mark; 09-01-2005 at 02:50 PM.

  9. #9

    Default Thank for the help

    MPM

    The unit is a "State Select" shorty 40 gallon water heater.

    Thanks again

  10. #10
    Master Plumber master plumber mark's Avatar
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    Talking Now---how Old?????

    Is the unit a pre-2003 water heater or the new
    sealed combustion type.....
    with the sparkey push button type
    ingniter???.

    If it is the newer style with the sealed combustioin feature
    you got troubles.....

    they are trouble


    get the serial number off the unit, it should tell you how old it is

  11. #11
    Retired Defense Industry Engineer jadnashua's Avatar
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    Default

    He indicated it was 8-9 years old. It might be more cost effective to replace it...it's on it's last legs in all likelyhood. My unprofessional opinion.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  12. #12
    Plumber RioHyde's Avatar
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    Default

    I'm with Jadnashua. Since its 8-9 years old and giving you that much of a headache replace it before it soaks you.

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