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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I just had to replace the circuit board on my furnace/A/C unit

Customer Question

I just had to replace the circuit board on my furnace/A/C unit because it would not turn on the condenser unit. I am now experiencing (about two months have passed since circuit board replacement) a situation where the evap blower motor kicks on and off for several minutes AFTER the thermostat (Nest thermostat) has turned off. It is causing the unit to vibrate and produce a noise that sounds like someone "thumpin" their bass music.
Submitted: 2 years ago.
Category: HVAC
Expert:  gotoman for ac replied 2 years ago.
Russ here. Welcome. I am here to help. Please do not rate until you are satisfied with answer. Always available for follow up questions.
What is model number and make of unit. Russ