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Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have a furnace that I have tried to set the fan on the

Customer Question

Customer: i have a furnace that I have tried to set the fan on the thermostat to auto. I refuses to go to auto. Instead I have cool air and then hot air blowing form vents. Temperature is being maintained
JA: Thanks. Can you give me any more details about your issue?
Customer: also if i remove thermostat unit everything shuts down. I put thermostat back in place Pins are not crossed
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Submitted: 10 months ago.
Category: HVAC
Expert:  airheatman replied 10 months ago.

If the auto /on switch will not go to Auto, you will probably have to replace thermostat.What is model on thermostat?