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Weil-McLain ultra 230

BMI
BMI Member Posts: 1
in Radiant Heating

Hello,

My target temp is just going all over the place. Causing heat limit shut down, 58f delta shut down.
replace expansion tank

New pump, and bled the system

Sensors are good

Thinking computer board

Heat target should stay the same always that’s why I’m think board

Any one else had this issue

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 25,530

    Before you get out the heavy artillery… check and verify that the sensors really are good. Check and verify that all the plugs and sockets on the wiring are clean and secure. Check the wires themselves — no chafes, no potential breaks. Check all the grounds — clean and secure.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    Ironman
  • Ironman
    Ironman Member Posts: 7,659

    A 58* delta indicates a lack of flow through the heat exchanger, not a bad board.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.

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