Hi. I have a 1 year old York model B1HP036A06A heat pump that is not quite keeping up with the cold (for California) temps in the early morning hours. It is supplying a rebuilt 100 year old house of approx
1200 sq. ft.What happens is it starts blowing cold air. When I turn it off for a few minutes, it comes back to life and works fine for a while, then it will do the same thing. This morning I looked at the outdoor unit and found a layer of frost coated the entire fin surfaces.
It got down to about 24 deg F last night.
I had a tech look at it last week and he fiddled with the thermostat, saying that it had been set to "fast" and reset it to "slow"; I'm not sure what that was, as I see no such settings on the setback thermostat. He serviced the unit and it seemed a bit better, until the cold (for us) hit again.
Any ideas? Is this normal behavior for the unit?
Thanks
bill