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buzzing from new controller?

larrym Member Posts: 1
Just installed a new S8610U Honeywell Universal Controller, the system works properly but with system on but not being commanded on the controller buzzes all the time. No led's lighting. My old controller did not buzz. Any suggestions for what is going on?


  • Jamie Hall
    Jamie Hall Member Posts: 18,931
    My first thought would be... did everything get screwed/bolted down tight? Is this a 60 hz (power line frequency) buzz?
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    EBEBRATT-Ed Member Posts: 11,996
    All you can do is check the wiring over and make sure it is correct. If it is it sounds like a bad module. Are you sure your ignitor is not sparking?