update - checked compressor windings
Ok, I've narrowed this down a bit - as a matter of fact, I believe the trouble isn't electrical. I checked the compressor windings and the dc resistance is right where it should be, and with no shorts.
Originally Posted by tom-rad
The compressor runs about 15 seconds before I get a thermal overload shutdown error. I also noticed that:
1 - the compressor does not generate a high enough emf to open the potential relay;
2 - the reversing valve does not switch, either in 'checkout' mode for a/c or heat.
I am no expert on refrigeration, but I'm guessing either high pressure, or missing some refrigerant.
This is a Bristol two speed (Bryant 698B, from 2005 heat pump) compressor, with R410A , or Puron. Anyone have any ideas? And, as I mentioned, I'm out of work, so have to do as much as I can myself. Thanks.