Wiring for T87F2873 thermostat

WIRING CODE HELP FOR THERMOSTAT I am in an office and have an old Carrier programmable thermostat which no longer works. I purchased a Hunter 44660 thermostat to replace. My problem is that the wiring codes on the previous thermostat do not match up the the codes on the new thermostat. Codes...

Currently my central a/c unit is hooked up to a Honeywell CT3500 Programmable Thermostat. I've noticed that the thermostat can handle heat as well as cooling. My furnace is hooked-up to an older manual thermostat. It is a simple 2 wire set-up - red & white. Could the furnace be hooked-up to the...

I have a 2 wire system (3 phase), need to connect multi wiring system thermostat! Need to know if, its correct to just use line#1, and the device already has a jumper?

I purchased a non-programmable digital thermostat to replace an analog thermostat with wiring red, white yellow and black. How do I match the wiring? HELP!

I need help trying to wire a new thermostat. The original was changed by previous owners and wired wrong, which mean that none of the inside wires are labeled. I have gotten the AC to work wired up several drifferent ways but it never blows like it should. The air is cold and the fan kicks on...