Honeywell Thermostat Wiring Color Diagram

Gas or oil furnace cool only c g w r s s y y2 g c u u a w2 w k rc r l a e aux m36882 1 common optional.

Honeywell thermostat wiring color diagram. Gas or oil furnace. Commonly used green white yellow and red thermostat wires. Most heat only gas or oil forced air systems do not use a fan g wire. Linh pacchiana 42 084 views.

T6 pro wiring diagrams wiring diagrams heat only. Honeywell thermostat wiring diagram 4 wire. This shows where to hook them up in a typical heat cool setup. G used for independent fan control only.

2 1 2 furnace r rc switch up o b heat only. Consult a professional with wiring questions to avoid damaging the thermostat or heating cooling system. Thermostat wiring and wire color chart thermostat wiring colors code. 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.

C 24 vac common you might see blue purple or brown typically used for this wire. The table above provides a more comprehensive list of honeywell thermostat wiring colors and their uses. 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. Substitute g wire for c wire install the honeywell wi fi smart thermostat with this video duration.

Color of wire and termination. G fan green wire. These four wire colors are standard on most honeywell thermostats but older or different styles or ones that have been previously been installed or repaired may have wires of different colors. This one uses the green wire as the c wire instead of the g fan wire.