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gotoman for ac
gotoman for ac, HVAC Technician
Category: HVAC
Satisfied Customers: 5092
Experience:  51 years of experience install design and repair of all makes and models of AC
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I have a command aire geothermal unit the fan will run when

Customer Question

Hi i have a command aire geothermal unit the fan will run when calling for heat but the heat pump will not kick on i hear a humming sound. I can kick the breaker for 20 minutes and it will run fine
Submitted: 11 months ago.
Category: HVAC
Expert:  gotoman for ac replied 11 months ago.

Sounds like a weak run capacitor. Are you comfortable working with wiring. Russ

Customer: replied 11 months ago.
I am comfortable with that
Customer: replied 11 months ago.
How will I know which one is the right one to change?
Expert:  gotoman for ac replied 11 months ago.

Open wiring panel and look on capacitor and get size. It will say something like 35uf 370 or 440 VAC. That is size of capacitor you need. Russ

Expert:  gotoman for ac replied 11 months ago.

Capacitor is silver round component. Russ

Customer: replied 11 months ago.
Ok thanks
Expert:  gotoman for ac replied 11 months ago.

You are welcome. Russ

Expert:  gotoman for ac replied 11 months ago.

Capacitor get weak and cause starting problems with compressor. Sometimes this problem is sign of compressor going out. Try the capacitor first. If you have anymore questions just get back to me. Also just google that capacitor size and several sites will come up. Just get cheapest cap. Russ Thanks