When the breaker for my heat pump is on, a heating element inside seems to be energized despite the unit being off at the thermostat. I think this because I can smell that electrical heating element smell coming out of the vents despite no fan blowing. Also, the side of the heater is hot to the touch, though I don't know if this is the actual location of the heating element inside.
What could be causing this? Obviously it's very dangerous and I'm awaiting an HVAC repair person to come out to look at it, but I'd like some insight before he or she gets here so I can be informed about the repair and it's cost before making a decision. I leave the heat pump off at the circuit breaker.