I have a Lennox 2.5 ton a/c unit, model 13ACD-036-230-05, with a blown dual run capacitor (the run terminal for the compressor is burnt off the can, the fan and common terminals are still intact, fan still running).
I had the cap replaced a couple years ago when the fan quit working. I remember the 5/45 uf, 440 volt cap that was installed was close to the original cap that failed, but not exactly the same.
I ohm'd out the compressor and got 1.4 ohms S-C, 0.9 ohms R-C, 2.3 ohms S-R. These values seem possibly reasonable to me, but according to LennoxPros, "The resistance between start(S) to common(C) is typically three-to-five times higher than run to common winding..." but they didn't state what resistance is actually expected.
What is the original cap rating (uf and voltage) for this a/c unit and what are the normal compressor resistance measurements?