Geothermal compressor relay?
I have two WaterFurnace units in my home. Both were just put in service although they were installed a while ago.
In one unit, when the compressor relay kicks in, it is an almost inaudible little click. But in the other unit, it is about a second of relay buzzing, a visible arc, then the unit runs normally after that. Does this sound like a bad relay or some other problem?
Any advice appreciated.