is this thermostat 4- or 5-wire compatible?
1549585
both, enough wires inside for any type of installation. I wired it myself and works fine, follow the diagram and you'll see there will be wires that you will not use anyway. adaptable to any situation
1549586
Based on the comments here I bought the thermostat - but found that it isn't a "5 wire" thermostat. A 5-wire thermostat uses the blue wire to draw power from the furnace, and doesn't require batteries. This thermostat does NOT have that option, and DOES require a pair of AAA batteries. While it does have 5 terminals (actually, more than that as there are several not connected to anything) the 5th terminal is the second red wire for heat pump operation.
543759
The thermostat that I replaced had "Coleman-Mach printed on the cover, but no model number. The system had heat, off, fan and cool. The fan had "on" with either high or low and "auto", also with low and high. The were six color coded wires on the old unit, as well as the replacement. Blue, brown, green, red, yellow and white. If your old thermostat has six wires as well, I don't see why this model wouldn't work just fine for you. I am very pleased with the way my replacement works.
1066009
I bought the thermostat today, and found out that my original setup had only four wires; missing C wire. But Honeywell have a video showing you how to substitute G wire for C wire. https://www.youtube.com/watch?v=F05lIaNTMB4 Basically, G wire is for operating Fan only mode (no heat / cooling). You loose the ability to use FAN only to power this thing. You have to change wire on the back plate as well as in the A/C-Heater. I'm not very skilled, but I was able to do it, just following the video.
143931
yas it is compatible. on a 1-10 1 being easy its at 7. must know a little about your wireing
1066010
This Thermostat takes 4 wires. Compare the wiring design of your current thermostat with the Honeywell. I had to run the 4th wire for my system which was the C wire.
2055309
as long as there are 5 wires (color to color) it should work. We have a new travel trailer and the existing thermostat didn't seem to control the air conditioner very well. I replaced the original thermostat with this and it works great, no problems at all.
1498978
Most likely. If you turn off the power to your existing system and pull the existing control away from the wall you should be able to see which wires it uses. Don't go just on the color of the wire look at the label on the existing thermostat. Compare this to the diagrams in the manual (http://www.luxproducts.com/support/TX1500E_ENG_Manual.pdf) and make sure you've got all the right connections.
2218129
I would not do that unless you knew the location of the internal thermostat. Check with manufacturer or schematic.
1066008
Check the number of strands in the existing thermostat wire. You need 3 strands for this thermostat. I had only 2 strands so I have to run a new 3 strand wire.
1611152
From the interface to the thermostat, yes. If you have an existing thermostat with four wires, you should be fine. It can even act as your central humidistat with only four wires. Having the interface box probably simplifies things in many cases--especially in complex systems. I recommend drawing a simple schematic of your installation before you begin. I called Ecobee's support before buying. They were helpful.
2055305
I replaced a analog that came from the factory with this thermostat and the wires matched color for color. I think that the only difference would be if you had a heat pump thermostat,then this one would not work.
1789634
Jeff is correct. Only two wires (conductors) are needed. If you have thermostat wire with more than two conductors, no problem, just use two of them and ignore the rest.
755288
As the wires are sealed I did not pay close attention. However when installing it, I do believe that it was a 4 wire plug. Hope that helps
1567992
I'm not an expert, but I think you'll be good with that. There are a number of ports for wires that control different functions (heat, air conditioning, fan, power, etc.)When I installed mine, I had the opposite issue. Only two wires from my prior thermostat (simple heat, no fan). I needed to get an extra power source kit with a wire just to power the Venstar. Hope this helps.You could also go to the Venstar site and download the installation instructions prior to buying it just to see if your colored wires match their diagrams.
549551
Only 4 wires. For the model without external coil on the distributor. So only 4 wires. I hope it help.
1474064
I installed it as an upstream on an 05 elantra. Believe it was a 4 wire but can't remember for sure. Was a direct replacement. Buy a o2 socket. It was worth it!
1264513
This unit will accommodate 4 wires, Red(power) White (heat) Yellow(cool) Green (Fan). It will function with Just red & white(for heat) or red & yellow(for cooling)If by 2 wire you mean line voltage(120v or 240v) the emphatic answer is NO!!! It is a low voltage thermostat. (24v AC) Hope this answers your inquiry. Darrel