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Honeywell aquastat 7224

Wayne55 Member Posts: 10
edited October 2018 in THE MAIN WALL
I'm new to this.i have Honeywell aquaetat 7224.tried to adjust low limit,it's not going up or down.im getting so aggravated not thinking clearly. Any suggestions ?


    HVACNUT Member Posts: 5,480
    Can you adjust any settings?
    Hi or differentials?
    Why are you looking to make the adjustment?
  • CTOilHeat
    CTOilHeat Member Posts: 56
    Holding all three buttons (up, down, select) at the same time for a few seconds will activate the options.

    What are your current settings and why do you need to adjust them? There are considerations to make with any adjustments and any changes can have an impact on not only the operation but the safety of your boiler.
  • Wayne55
    Wayne55 Member Posts: 10
    The boiler temp. Is 75. Low limit is set at 110. I replaced a circulator 2 weeks ago was working fine.then crapped out. If boiler temp is lower than low limit I get bt error message
    HVACNUT Member Posts: 5,480
    Try setting,
    Hi- 180
    Hi diff-10
    Lo diff- 10
    After making adjustments, turn off the switch for 5 minutes. Turn back on and check.