Quote:
Originally Posted by Angel
many heat pumps have fan(s?), compressor(s?), and 'emergency heat'. Each of those is a high-amp draw device that could have its own 25A contactor. I'd look for more high-current switching devices (large MOSFET's or semiconductors somewhere ?)
-John
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Please take my info with a grain of salt but I believe the aux heat is a set of coils usually located in the air handler.
Just because it was "professionally" serviced doesn't mean much. Is the unit not working? Do you believe the contactor is broken?