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frenzal rhomb

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My air conditioning unit is turned off at the fuse box -( winter in PA ). However, I went out this morning and heard a loud buzzing coming from inside the unit. The fan is not spinning and the heat is actually on in house.


This isnt a heat pump,it is a standard air conditioner unit - I have two zones so one unit per and it appears to be the upstairs unit.


I have an HVAC guy coming out but they cant get here for two days. My big concern is why would it be buzzing when the power at the fuse box is off?


Anyone have a clue what I'm looking at here?



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  • 2 weeks later...

What moneymakers said had some truth. While the contactor wasn't bad, it was most certainly the source of the buzzing. The bad stat was sending the signal to turn on the unit which had the contactor pulled in. No current from the main breaker = no unit running.


Glad you got it nipped.


Wish I would have visited here sooner to be of actual help rather than retrospective chit chat.

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