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Papa__C_'s avatar
Papa__C_
Explorer
Oct 08, 2017

Need help with my Atwood hot water heater 10 gal

I need some help .. my hot water heater got to hot and blew the relief valve. I was told it was the thermostat ( the unit works on elect. & gas. ) I run it on electric. I went to the RV dealer and was told I needed to replace the thermostat. He said it was found behind the hot water heater I looked (after buying the part ). I found nowhere to replace this thermostat!
I then ( not very happy) went to you tube and the only place they show is a thermostat on the front of the unit ??
Im totally confused. However.. I did replace the thermostat on the front ( it's working ) just wondering if I did right. Thanks for any advice in advance.

Papa C
  • This may help. My hot water heater has thermostats on both sides of the tank. The gas side is outboard and the electric side is buried in the fifth wheel.

    http://61oldsalt91.blogspot.com/search?updated-max=2017-06-04T14:12:00-04:00
  • Not an unusual situation at all. I have replaced both thermostats on my Atwood 10 gal water heater two times. Sounds to me like you did it right. :)
    Barney
  • Thanks for your reply !
    The relief valve pooped of and hot water was going every where.
    I agree ... I think the " Gentleman " needs to go back to school. I now feel better.
  • Dealer is WAY out of TOUCH

    Up to/thru 2003 Atwood Electric/Gas combo water heaters used separate t-stats for electric and propane functions

    2004 ---Present (For past 13 YEARS)
    Atwood Combo Units use ONE set of t-stat/ECO for BOTH electric/gas functions
    They are on front (outside compartment)

    Under the foam insulator ....marked ECO/T-stat
    Red wires/....ECO (HI Temp T-stat---180*F
    Brown wires/..T-stat (Normal controlling ---140*F)


    BOTH failing is suprising

    T&P Relief Valve BLEW??
    OR weep heavily
    T&P opens at 210*F YIKES

    Weeping....could be from T-stat failing,,,water heating to 180*F (ECO shut down----should have gotten a RED Fault light) and loss of Air Pocket inside WH TANK


    You did buy/replace BOTH ---correct?
    Not necessary but 'best practice' to replace (come as a set with new foam cover)