Looked at a Rheem 2.5 ton packaged Heat Pump with a Scroll compressor. It runs fine when in cooling mode, but in heat it runs for five minutes and overheats. Makes a loud squeeling noise.
Reversing vaulve sounds good (energizes and depresses). High pressure peaks at 375 when this noise starts happening. Unit is a 2001 model.
[Edited by freezeman on 10-30-2005 at 09:59 AM]