Honeywell 5 Wire Thermostat Wiring Diagram

But here is a list of the most common wire color mappings as seen in many four wire t stat setups.

Honeywell 5 wire thermostat wiring diagram. We have a 19 year old condo with an old carrier mercury thermostat. However these colors can be different. These split systems include an air conditioner with a gas furnace oil furnace or electric furnace. The wiring for your honeywell thermostat depends on the functions of your heating and cooling system.

The main trouble is dealing with those different colored wires knowing which one does what and if that wasnt enough you also have numbers and letters to deal with. There are only four wires going into the existing thermostat red green blue white. Color code how it works diagram. Our wiring diagrams section details a selection of key wiring diagrams focused around typical sundial s and y plans.

Rc red wire power 24 vac rh or 4 red wire jumpered power 24 vac w white wire for heating enable y yellow wire for cooling enable. Even the most seasoned people who enjoy diy may come across problems with wiring a thermostat. Ac service tech llc 15788 views. Heck now im not calling anyone a dummy.

The honeywell home trademark is used under license from honeywell international inc. The basic heat ac system thermostat typically utilizes only 5 terminals. We have both a natural gas furnace and an ac unit. 5 wire honeywell thermostat wiring.

Today i want to talk about how simple a thermostat really is how the common and hot wire goes to a transformer how you tie the white wire for the heat strip connect the green wire which controls. How to wire a thermostat thermostat wiring diagram. Youll probably see a thermostat jumper wire connecting the rc and rh terminals. The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above.

The table above provides a more complete list of honeywell thermostat wiring colors and their uses. Some programmable thermostats eg. 4 wire or 5 wire thermostat wiring problem question. The additional 5th wire will be for common.

Providing stepped down power from a transformer. Thermostat wiring to a furnace and ac unit. Faq t6360 room thermostat wiring operation faq wiring diagram s plan pump overrun st9400 and dt92e. Its there so you can supply power to the heating and cooling switches with a single wire which is usually red.

This thermostat wiring diagram is a split system. C 24 vac common you might see blue purple or brown typically used for this wire.