Bob received a call from the dispatcher who said that a small retail store that used a heat pump was without heat. Bob called the store owner and told him to switch to emergency heat until he could get there. Bob had to finish a job that he was on before he could go to the store and the weather was cold.
Bob finished his call and drove over to the store with the problem. He entered the store and found the owner in the stock room. The heat pump indoor coil was also located in the stock room. Bob asked the owner, "What seems to be the problem?"