I am attempting to replace a Totaline thermostat with a Honeywell RTH6300B programmable thermostat.

I have both Carrier A/C and gas furnaces for both zones (2).

The units are all 3 years old.

After replacing the thermostat on the first zone, I can only get the heat to kick on and it works fine. I try to test the A/C and the fan and cannot get either to kick on. I have made sure the circuit breakers are all on and the thermostat is set to cool with the temperature set below the current temperature and waited several minutes. I have read there is a 5 minute cool down on some systems.

I seriously doubt I have mis-wired the 5 wire system and have removed the jumper per Honeywell instructions.

Any ideas?

Recheck your wiring

http://customer.honeywell.com/techli...0s/69-1717.pdf

Red wire connected to R
White Wire connected to W
Blue wire connected to Rc
Yellow wire connected to Y
Green wire connected to G

All wires are tight. Still cannot turn fan on manually and A/C will not kick on.

I have reviewed the manual and this website. I couldn't find out where I did anything wrong.

Help someone?

The blue wire is connected wrong, it is a common wire on the totaline and your new thermostat does not show a common, the red wire should be connected to both the "RH" and "RC" with a jumper, if the new thermostat has batteries tape off the blue wire and don't use it, if there is a "C" it would go there, Good luck, Mike

Dude you rock!!

Everything works now. This is definitely not how the old thermostat was wired and the directions said to remove the jumper.

Thanks a lot! You just saved me a service call and more importantly a whole lot of aggravation.

I will definitely recommend this site.

Just a side note. Why didn't the directions say something about this? I have replaced several thermostats in the past and never had an issue like this. I noticed the thermostats have different letters than they used too. Is there some sort of transition or standardization going on?

Thanks again!

The new electronic thermostats are more versatile then the old ones and can be used for a variety of different systems and componets such as remote sensors , they will have more letters for wire connections and may need the perimeters adjusted in the advanced setup when you install it to tell it what type equipment you have and how you want it to operate. Good luck, Mike