On 8 May 2007 21:16:02 -0700, Jason wrote:


After reading further, the guy MUST have meant "reversing valve." I
can't find anything on a UV valve except for in reference to gas heat,
and a sticking reversing valve seems to have similar symptoms.

- J


The mechanical principals behind a heat pump can't be that complex.
http://en.wikipedia.org/wiki/Heat_pump I would check the fluid level.
Then I would look around for a similar valve from a HVAC place and
swap it.