I replaced a carrier standard programmabe therostat model number TSTATCCSAC01, there are five wires from the wall that lead to the thermostat, the thermostat wire receptacle is labaled: Y C R G W O.
Need more info, Wire colors; to see if the installer used tstat wire, also what kind of system yo u have. I'm guessing you have Boiler/furnace and cooling. If so, and I don't get back to you in time, try this.
If you can open the acess cover on the heater and look at the transformer( it usally has a slight hum to it). Look at the color wire. Also if unsure, that cover you just removed, turn it around, it will have feild wiring or low voltage wiring makings on it. That is the t'stat wiring. Just match them up with the t'stat. The R/RC is the hot from the transformer( usally red in color) . The C is the common from the transformer(usally black in color).Note, this was used most of the time for t'stat power. may not be needed for new tstat if it's battery powered. The W is used to turn the firing on( what ever your flavor is) (Usally white in color). The G is the indoor fan (usally green, sometimes brown in color). The Y is used to turn the outdoor condensing unit on(cooling) (This wire is usally blue or orange, sometimes yellow). The "O" is usally used for a changeover valve usally only on heat pumps. Most of the time on t'stats you willl have O/W markings, but the way you listed it, you have a seperate connection for it, odd.
SO, before you start, turn power off to indoor and outdoor units. Indoor unit, most of the time, will have a light switch mounted on the side of unit or above. Some places call for the switch to be mounted at the enterance of the area where the heater is. The sould be marked with a red switch cover. If unsure, follow the wire (romex, or metal sheilded) powering the heater. Then go outside by the condenser, you should see a box mounted adjacent to the unit,open it up and pull the disconnect out.
Take your time and look at the wiring detail on the heater, and match the wires. THIS DESCRIPTION IS NOT FOR A HEAT PUMP SYSTEM. This is only for a conventional system. One heat, one cool.
After you've connected all the wires, Turn t'stat to off. power up all units.
Turn to t'stats fan to on. You should hear the fan go on.
set fan to auto, and set t'stat to heat and set it to higher temp that room temp. Listen for ignition,
listen for fan. Fan may take a few mins to turn on due to heat exchanger comming up to temp.
As long as it's not below freezing ouside. switch to cool, then set t'stat below indoor temp. see if outdoor unit and indoor fan turns on. You will not harm compressor doing this for a short time.
Mar 04, 2013 |
Heating & Cooling