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

Ruud furnace works fine with protech 600 thermostat. When I

Customer Question

Ruud furnace works fine with protech 600 thermostat. When I went to upgrade to another brand and model the blower will not shut off. Have tried disconnecting all wires from the furnace and still the blower will continue to run. If I connect back up old thermostat it works fine.
Submitted: 1 year ago.
Category: HVAC
Expert:  BillyHvac replied 1 year ago.


C to G could end up being a short.

Can you tell me first what color wires you have and what terminal they are on in old thermostat.