The yellow wires underneath your thermostat connect to your compressor. They control your air conditioning system. The yellow wires terminate at your compressor contactor via an air handler. The yellow wires connect to the Y terminals on your thermostat.
What happens if you incorrectly wire thermostat?
Potential consequences of improper installation could include: Electric shock. Blowing a circuit breaker. Damaging the thermostat unit, the electrical system or even the AC/furnace unit itself.
How do you match thermostat wires?
Here is the industry standard thermostat wire color code used for most systems:
- White. The white wire connects to your heat.
- Yellow. The yellow wire connects to your compressor.
- Green. The green wire connects to the fan.
- Orange. This wire connects to your heat pump (if applicable).
- Red (C).
- Red (H).
- Blue.
What color thermostat wires heat?
white
FIVE WIRES The wires are typically arranged as follows: red for 24-volt hot, white for heat, yellow for cooling, green for the fan, and blue for common (although the common wire may be a different color).
What do the colors mean on thermostat wires?
This is the most typical thermostat wiring style, and it applies to systems that regulate both heat and air conditioning. The wires are typically arranged as follows: red for 24-volt hot, white for heat, yellow for cooling, green for the fan, and blue for common (although the common wire may be a different color).
What color is the common wire?
White
Red, Black, and White are the colors of switch wiring for three-ways. Red and Black are connected to the switches if the White is used for neutral. The White is often referred to as Common, but the colored wires are also used as hot wires.
Why is there a jumper between RC and RH?
Putting more than one wire into a Nest thermostat connector can damage your system and your thermostat. Instead of using jumper wires, Nest Learning Thermostats use an internal jumper between the Rh and Rc connectors. A Nest Learning Thermostat will automatically use this internal jumper if your system needs it.
What is the Honeywell ct31a1003/e heat and cool non-programmable thermostat?
The Honeywell CT31A1003/E Heat and Cool Non-Programmable Thermostat features low voltage controls and a convenient snap-action switch that allows users to adjust freely between heating and cooling systems.
What does ct31a1003 stand for?
Honeywell Heat and Cool Non Programmable Thermostat (CT31A1003) Thermostat for heating and cooling systems.
What wire do I use to hook up a thermostat?
If your system has both heating and cooling functions, you’ll need to connect both the Rc and Rh terminals with a red wire. Because many thermostats come with a pre-installed thermostat jumper wire that connects these terminals, you only need one red wire, which could be the thermostat Rc wire or the Rh wire.
How do I identify a terminal on a Honeywell thermostat?
Your new Honeywell thermostat should be able to accommodate the same number of wires. Honeywell thermostats follow the industry standard for terminal identification. Each terminal is marked with a letter that usually corresponds to the color of the wire that should be used to connect it.
