On Thu, 21 Apr 2011 15:29:01 -0700 (PDT), "
wrote:

The title says AC problem, the body talks about heat pump. Which is
it
doing when the problem is ocurring, heating or cooling. If it's
doing
this in cooling mode, I'd say it's almost certainly a bad fan or the
wiring going to the fan. Not sure how the fan is used in heating
mode.

It is a heat pump in A/C mode. I had a lot of problems with this unit
about 2 years ago and they replaced the fan motor twice, the
capacitor, and the thermostat. It doesn't act like a loose connection
because the on/off times seem consistent.
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