I'm a homeowner not an HVAC expert but I'm learning fast. I got "tailight warranteed" by my installer and my UPNE030JAZ heat pump and achiever UGTA09EZ gas (LP) furnace is working furnace-only, no heat pump.
It was installed 9/08 and worked through about early January then I noticed the heat pump wouldn't come on any more (36'F balance point). So I called the installer who came by when I wasn't around (wife was), claims he pulled out a temp sensor or thermostat of some kind from the condenser (for testing) and I've not been able to reach him since in the last 2 months. I have no idea what's going on in his head nor what the status of my unit is.
So my issue is this: I opened the service cover on the condenser and took a look at the gear there to see if I actually saw anything missing (eg sensor unplugged, circuit board missing etc) but it doesn't appear there is anything out of place. So my HP looks intact, tech is MIA- I'm thinking I should just get another tech out here, pay the $$$ and get this thing fixed.
Ideally I'd like to run some basic tests myself to determine if there's an obvious problem I could fix. Also I don't really want to pay a tech to come out just to tell me the previous idiot has a control board or something and he can't help me until I get it back.
Pix attached to show what it looks like. Does anything look out of place???