Hi Guys: I have a ICP heat pump that is working ok. but it doesn't defrost the coils completely. The defost cycles are set for every 30 mins. I am getting a band of heavy frost staying around the middle on the outside coil. I have seen this before on other units. is this normal do to heavy work load when the weather is cooler, and the unit doesn't get a break?
When it goes on defrost. the bottom coil is getting cleaned up , where the defrost termination sensor is.