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Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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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: 4 months ago.
Category: HVAC
Expert:  BillyHvac replied 4 months ago.

Hello,

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.

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