How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Phil Your Own Question
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

White Rodgers 1F80-224 thermostat to Honeywell RTH9580 WF No

Customer Question

White Rodgers 1F80-224 thermostat to Honeywell RTH9580 WF No C wire. Now what???
Submitted: 1 year ago.
Category: HVAC
Customer: replied 1 year ago.
My White Rodgers thermostat is a four wire unit. Has W, Y, G, and RC with a jumper from the RC to RH wires. From my A/C unit the color of the wires are as follows: blue wire connected to the yellow (Y at the thermotat), green wire connected to blue (G at thermostat), white to white (W at thermostat), red to red (RC with jumper to RH at thermostat).
Expert:  gotoman for ac replied 1 year ago.
You only have a five wire cable going to thermostat. Is it possible to run a new wire cable from furnace to thermostat. You will need at lest a six wire cable or just run and extra wire from C on furnace to C on thermostat. Russ
Customer: replied 1 year ago.
There is only four wires coming from furnace. The fifth wire at the thermostat is a jumper. The photo is my furnace and the old thermostat. The new thermostat requires a C wire for power to operate.