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Munchkin blower issues....

kcoppkcopp Member Posts: 2,522
Got called to a local condo 2 day. Munchkin T80 , Nat Gas, installed 2006. No hot water. F13 error code. Fan motor is shot. This is the 3rd one since it was installed. and is on its 2nd board. Fan blade looked fine just the electronics that was bad....any thoughts ?


  • Steve WhitbeckSteve Whitbeck Member Posts: 669

    sounds like reversion to me. The boiler is sucking up it's own exhaust.

    The exhaust pipe must be at least 18 inches higher or 5 feet downwind of the intake.
  • JStarJStar Member Posts: 2,668

    HX clean? Vent piping within limits and sized correctly?
    - Joe Starosielec
    [email protected]
  • Mark EathertonMark Eatherton Member Posts: 5,493
    Combustion air condensation???

    A friend of mine had the same situation, and just happened to be standing there one day watching the intake pipe drop condensate onto the motors electronics...

    I don't know if it might have been reversion gasses that were condensing in the vestibule, but it took three of his blower motors out before my friend figured it out. He fashioned a sheet metal shield to keep it from happening again and hasn't been back since.

    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
  • kcoppkcopp Member Posts: 2,522
    That would....

    make sense. I did notice a small water stain on the motor cover. As far as the venting goes they used a couple tees and there is separation. by 24" or so but its on the same plane. I need to go back and run a combustion test anyways. ty
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