A friend of mine replaced my thermastat with the Honeywell rth230b. The heating is working but the air conditioning is not. I have checked to make sure the breaker wasn't tripped. What else could be the problem?:confused:

Thank you:

If the wires your buddy connected to your new thermostat are colored White, Yellow, Red, and Green (maybe two green wires), then you may be well advised to take a look at my post "HoneyWell Thermostat Miracle"

If it doesn't have this wiring set up, I bow out and let the others advise you : )

DJ