Do mini-split systems have auxiliary heat?
Is there any way for them to produce heat if they are out of refrigerant?
Fujitsu Model # AOU9R2
We have a case where the system was checked and was producing heat at inspection, but after client moved in it failed to produce cold air. Repair company said Schrader valve leaked, and there was no refrigerant. Just trying to determine how it produced heat if it had no refrigerant.