Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

ZC terminal

jackmc
jackmc Member Posts: 1
8124 aquastatt wired to R832a , ZC to 1 , ZR to 4 , 3 to circ , for 2 nd zone , Burham V83 with tankless coil , c1 drops out at correct temp 150 degrees from Low set at 160 , but ZC stays powered therefore 2 nd zone Circe keeps running when need heat for tankless , is this a bad 8124 ?

Comments

  • Big Ed_4
    Big Ed_4 Member Posts: 2,747
    ZC should drop out on the low ...
    I have enough experience to know , that I dont know it all
  • SeymourCates
    SeymourCates Member Posts: 162
    @jackmc

    If C1 properly drops out (with the 'stat closed), and ZC remains powered, the only possibility is a bad L8124.
    HVACNUT