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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 an old pulse which works great until the blower

Customer Question

I have an old pulse which works great until the blower stopped coming on with the heat. Replaced the 97H03 with 53K80 and still have the same problem. Confused!
Submitted: 9 months ago.
Category: HVAC
Expert:  airheatman replied 9 months ago.

Do you have a volt meter to see if we are getting 120v out of the board to the motor?

Customer: replied 9 months ago.
Am I going to check the new fan timer I just installed?
Expert:  airheatman replied 9 months ago.

The board should be a fine replacement.I am suspecting possibly motor

Customer: replied 9 months ago.
Could the blower have just the heat speed winding bad? It will run in man just not auto.
Expert:  airheatman replied 9 months ago.

Yes locate the fan wires and call for heat, then when blower should be coming on, see if we have voltage