[al da plumma]

How do I know whether my capacitor or blower motor is at fault. My blower motor is weak and won't blow the a/c to the 2nd floor. This is a new problem for a 20 year old unit. Thanks Al

[Joshdta]

If it starts then it is most likely the motor or air filter. Capasitors going bad usually just causes the motor not to start

[T-Top]

The capacitor can be tested to see if its bad. Take it to a local dealer and have it tested(we test them all the time for people). If it test bad they will have one for you to buy.

[al da plumma]

The capacitor can be tested to see if its bad. Take it to a local dealer and have it tested(we test them all the time for people). If it test bad they will have one for you to buy.

Anyway I can test this myself?

[Joshdta]

Does your fan start?

[mygirlsdad77]

You need a speciall meter to test the cap. However, I Agree with Josh that cap is most likely not your problem is blower starts. Have you checked your filter? Do you have ac. If filter was neglected for a long time, your coil on top of the furnace may be plugged also. Or even the heat exchanger on the furnace may be plugged if your furnace is an 90+ eff furnace. Please let us know what you find.

[al da plumma]

does your fan start?

Fan starts. Last year during the winter, it started a little slowly at first, then quickly built up speed and ran fine. I cleaned the blower and put the proper oil in the motor, and things seemed to be fixed. When I switch to a/c mode, I started developing these problems. Yes it's a +90, filter is clean, coils are hard to get to but I'll check those as well. Thanks

[T-Top]

Your motor uses two different speeds when heating or cooling. A slow turning motor on startup can be a bad motor or run capacitor. If you take the capacitor to a dealer to test it and it test good you have a motor going bad. But if the capacitor test bad spend the $6.45 and give it a try.

[al da plumma]

Your motor uses two different speeds when heating or cooling. A slow turning motor on startup can be a bad motor or run capacitor. If you take the capacitor to a dealer to test it and it test good you have a motor going bad. but if the capacitor test bad spend the $6.45 and give it a try.

Thank you. I'll do just that.

[clubobg]

I have a goodman air condition
It run but not blow cold air , check the copper it feel cold
Check voltage to blower motor it have 120 v ac but blower not run
It's blower motor bad or start capacitor bad ?