Red And White Wire From Ac To Furnace

Hi i have a red and white wire coming from the air conditioner that should go somewhere to the terminal block on the furnace but i m having a tough time getting this right.

Red and white wire from ac to furnace.

Gregmac apr 13 15 at 1 40. Rc wires are only for air conditioning systems or dual transformer systems. The red wire connects to the r terminal and the white wire connects to the c terminal. They are red white green and blue.

Red or rc wires. I have four wires coming off the thermostat. Strip the red and white wires back about 1 4 inch at both the thermostat and the furnace ends. You should also cap off the black wire at the thermostat or disconnect it from the furnace board.

Attach the wires at the furnace terminals. And could short out against one of the other wires. Dual transformer systems refer to a setup with a cooling and heating transformer. Most two wire thermostats wire have a red and white wire encased in a brown insulated coating.

These wires only connect to your cooling system. It is carrying 24vac. This wire connects to your heat pump if applicable. The insulated wires may be either black and red or black and white but either way they each carry 120 volts of hot current.

Connect the white wire to the w terminal on the furnace and thermostat. The rh wire connects to the heating system. This wire may be red without an h attached in some cases. How to wire an air conditioner for control 5 wires the diagram below includes the typical control wiring for a conventional central air conditioning system furthermore it includes a thermostat a condenser and an air handler with a heat source.

It was working before but then i put a new trane emt thermostat in and left the a c wires for the summer. Red wires specifically rc wires are responsible for 24 hour volt ac power from your transformer. The blue wire on the thermostat is the common or c wire. They are red and white.

Yeah the wiring looks correct other than the red white in the wall. I have five spots on the furnace control board whe read more. It does not matter in which orientation the wires attach to the air conditioner. The rc wire connects to the cooling system.

For example if the red wire is connected to w on the thermostat the furnace should turn on. Attach the wires at the air conditioner. Furnace thermostat wiring diagram terminal letters on a thermostat and what they control the hot wire 24 volts usually red from the transformer is the main power wire to turn on or off a furnace components. The high voltage wires have two insulated power wires and one bare copper ground wire.