Color Code Honeywell Thermostat Wiring

Thermostat wiring and wire color chart. But here is a list of the most common wire color to function mappings as seen in many four and five wire t stat setups. Thermostat wiring color codes i have created the chart below to help you determine the common terminals you should expect in a thermostat and the respective color codes that are connected to them.

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R the r terminal is the power for the thermostat.

Color code honeywell thermostat wiring. Color of wire and termination. It is a red wire and comes from the transformer usually located in the air handler for split systems but you may find the transformer in the condensing unit. If you decide to get rid of your outdated thermostat for a smart or wifi thermostat be sure to mark the wires to indicate which color letter on the board they are connected to. Example of a honeywell smart thermostat rth9580wf wall plate mounted with 4 wires connected.

R the r terminal is the power. Thermostat wiring tips color codes thermostat wire installation tips and wier color decoder tips on thermostat wiring color code conventions old timer tips on shorting out thermostat wires on purpose to identify which wire is which shorting out thermostat wires leads to loss of heat this article describes several tricks of the trade used by professionals when installing room. 4 wire thermostat wiring color code. Common honeywell thermostat wiring color code.

Color of wire and termination. Only after youve done this disconnect the thermostat for replacing. The next t stat the honeywell t87n1026 big dial model does not require a c wireso in this case the g wire actually does control the hvac fan. Thermostat wiring and wire color chart thermostat wiring colors code.

Thermostat wiring color code chart. This comes from the transformer usually located in the air handler for split systems but you may find the transformer in the condensing unit. The table above provides a more comprehensive list of honeywell thermostat wiring colors and their uses. Not all thermostats have all these connection points so you just have to follow the connection points of your particular unit.