Heating, Air Conditioning, Fridge, HVAC/heil sp 80 central unit blower


fan will not come on modelntc5075bfb2

Hi Terry, Check to make sure you have power to the module in the furnace. Then check to make sure your thermostat is good. Turn the breaker off to the furnace. Remove the stat to expose the wiring and jumper R to G, then turn breaker back on, this should start the fan. If it won't start, try replacing the capacitor on the blower motor. Make sure the MFD is the same as the old one.

Let me know.

Heating, Air Conditioning, Fridge, HVAC

All Answers

Answers by Expert:

Ask Experts


Jim S.


I can answer questions on gas or electric furnaces, ac units and heat pumps. I don't work on boilers,chillers,or home appliances.


I have been in the HVAC trade for over 35 years. For the past 15 years I have owned my own business. I am semi-retired so I can answer questions in a timely manner.

I attended trade school for 5 years on weekends and evenings. This was very hard to do, but well worth it!

©2017 About.com. All rights reserved.