Today it got warm enough that we turned on the air conditioning. After a few minutes, we noticed that it had gotten noticeably warmer in the house. The vents were blowing very warm air. The heat strips may have been on.
My natural assumption is that the new thermostat is wiring wrong. Here is the way it is wired:
RC - Red (cooling power) R - no connection (heating power) O/B - Orange (changeover valve) Y - Yellow (compressor) G - Green (fan) C - Blue (common) E - White (emergency heat relay) AUX - White (aux heat relay)
E and AUX are jumpered together.
The manual says that R and RC should be jumpered together UNLESS the system is a two-transformer system. My system has only one transformer.
Here are my questions, with what little I know:
1. Should there be a jumper between R and RC? 2. If there should be a jumper, how is heat working with a wire going to RC?
While I was troubleshooting, my HVAC guy called me back. He's in bed with the flu. Just my luck.
I'll post a picture to the present wiring in a few moments. You guys have helped me tremendously before. Thanks!