Massive Heat Wave, AC not working. - HELP

motc777 wrote:
This unit came with a combined capacitor and a start capacitor. If I am reading what you are saying right, you are saying that I need to leave those two there and add a third capacitor that came in the kit?

In a word, YES. The new single-value, two-terminal capacitor that came with the new fan motor replaces EITHER:

1. A single Fan Run Capacitor (in which case there are already three capacitors on the unit: Single Fan Run, Single Compressor Run, Compressor Start)

or

2. One side of a Dual (two in one) Fan Run + Compressor Run capacitor (in which there will be three capacitors: The NEW Single Fan Run, Original Dual Capacitor with only HERM connected, Compressor Start)

In Case 2. the COM terminal of the Dual Capacitor has to be connected to either terminal of the new Single Fan Run Capacitor and the Fan capacitor wires to both terminals of the new capacitor.

You can try using the original Dual Capacitor and hope that the Fan Run side was not the cause of the fan not running. I put a new fan motor in our Coleman Mach. It didn't come with a Capacitor. The new motor runs fine with the original, 14-year-old capacitor. But, two things:

1. I have a meter that can test capacitors and ours tested OK on both sides, Fan and Herm.

2. Our original motor was replaced because of Bearings, not its Windings.

In passing, I still have that Coleman motor. If somebody can use it to salvage one with good bearings that failed electrically, let me know.