Hook up thermostat wires Honeywell Thermostat Wiring Instructions

Hook up thermostat wires

4 Wire Honeywell Thermostat Wiring

The following is a chart showing the most common terminals and their respective color codes and what that particular wire is used for in the circuit. If the fan fails to run for any reason, the heat exchanger will get too hot and the hi-limit temperature device will hook up thermostat wires the circuit to the gas valve, closing the valve and stopping the heat cycle.

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In a situation where the original kim xian exclusively dating wires may have been stapled to an interior wall stud, and not run through conduit, you may be better off leaving the existing set of wires, and cutting them off at the entry and exit points of the wall. I installed a honeywell programable thermostat. Green — The green wire connects to the fan.

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Be sure to take a very conservative measurement on how long your new set of wires should be. The thermostat is the control device that provides a simple user interface with the internal workings of your homes climate control system.

When i turn on the heat the ac kicks on and vice versa.

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About a month ago the thermostat stopped working properly would no longer automatically turn on shut off the unit according to the desired temperature setting. Wiring Set-Up Explained What I would like you to know is the information detailed below is based on the industry standard, yet not all thermostats will work this way simply because letters and numbers are used as hook up thermostat wires as color. But in the case of a Heat Pump system, You'll really have to do some research to verify that the programmable thermostat will work. This could save you a lot of unnecessary expenses in the long run.

I would highly recommend that you write down what color wire is going to which terminal. The W, Y and G terminals should be pretty straight forward on most all types of thermostat's.

Wiring Set-Up Explained

They just get a little more sophisticated so if you are pre-wiring a new home, check with the contractor providing the HVAC system as to what thermostat wiring is required. In this article, I am going to explain the function and wiring of the most common home climate control thermostats.

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If you have any questions or comments on your furnace situation, feel free to add a comment below. Any ideas onhow to choose which of the white wires should go to the W terminal and which one to the Rh one? Electricity can be downright scary.

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This way if your color codes don't match the normal code as the chart below indicates, you can still get a good idea of which wire should go where on your new thermostat. You will have to determine this before you start disconnecting any of your thermostat wiring.

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Some programmable thermostats e. The obvious down side of this is that if the battery goes dead the thermostat will no longer function. When I unscrewed the old one from the wall, there are only 2 WHITE wires coming out of the wall and into the back of the thermostat!!