taco 5000 not working..??

Discussion in 'Tankless Water Heater Forum' started by bugguts, Dec 27, 2009.

  1. bugguts

    bugguts New Member

    Dec 13, 2007
    NYC Paramedic
    cen New Jersey
    we have a relatively new Taco mixer valve 5000...... cold going in ........ very hot coming out of the coil to the valve,,,,,,,, lukewarm ( at best) going into the domestic water system ! Cold showers !
    I have the valved turned all the way ,counterclockwise (H) but still the same ,,,, Iturned it all the way back no change,
    could the valve have failed , or could it be stuck, ( less then a year old.). city water ,,,,,, not hard,,,,
  2. jimbo

    jimbo Plumber

    Aug 31, 2004
    San Diego
    taco 5000: "Fail-Safe on Hot or Cold Supply Failure "

    Have you checked with Taco and with the manufacturer of your tankless to see if that valve is appropriate for your application??
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