Check out some similar questions!
Honeywell thermostat [ 11 Answers ]
I installed a Honeywell CT87A 4447 thermostat this summer. It worked fine with my air conditioning, but I am having a problem with it controlling my furnace. It will turn the furnace on and I can turn the fan on manually, but when set to auto the fan does not come on. The thermostat has the...
Honeywell RTH6300B [ 2 Answers ]
I'm kind of confused about the wiring, I have an old thermostat that I'm trying to replace but the wiring on it is different from what they have on the manual. The wires that are connected to the terminals are R, O, G, & Y which at the same time wrapped around the W terminal. How do I match the...
Help with new Honeywell RTH7500D [ 1 Answers ]
Hello Everyone. I just bought my new thermostat and installed it. Using my old thermostat, an old mercury White-Rodgers, I wiring the Honeywell to what I thought was a "conventional" system. I have gas heat and electric A/C. Outside I have the fan unit which blows air into the compressor and...
RTH7500D honeywell help please [ 2 Answers ]
I bought a Honeywell RTH7500D and am trying to install it, but (as appears to happen frequently) the wiring guide in the install manual does not match the wire labels from the old, non-programmable Stat. What I have in the OLD one: V RH RC G Y
Honeywell RTH230B [ 6 Answers ]
I am installing a Honeywell RTH230B thermostat but am not sure of the wiring. I have 6 wires colored as follows, red, green, white, yellow, and 2 blue wires. Please advise?
View more Heating & Air Conditioning questions Search