Need advice.
Constructed fenced in area next to house where our heat pump is located. Our Lhasa Apso used the dogee door all of last winter and this past summer. For whatever reason now when the heat pump is on, she refuses to go out to do her deed. Not sure what has happened to make her afraid of the unit, but need to correct her of fear and of relieving herself in the house.
Forcing her out the door does not appear the best idea. Tried putting her in pen and calming her by sitting in the area with her. Still no success.
Suggestions as to how to train her would be appreciated.

Shegert