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?