A/C Relay and Hard Start Capacitor

Cool!

Thanks,
Mike

The 6E is the one you want, though it isn't a miracle device- it can make it work at times when conditions are marginal. That module is the PTCR device, which duplicates the function of the Supco.

I think I may need to replace my start capacitor. Yesterday it was about 102° when I first turned my A/C on and it would not start. This morning, when it was only 80° it started fine.

I removed my start cap this morning and it is rated at 88-108MFD, about the same as a Supco SPP6E. I guess it could be weak and needs replacing, but should I go up to a Supco SPP7E?

2. If I buy the Supco SPP6E, do I still put the WSX-5ACM module on top, or is this built into the SPP6E?


Thanks,
Mike

So Chris, are you r recommending the SPP6 or the SPP6E?

Edit: I have read your response again and see that in your opinion you would go with SPP6E. Thanks for your response.

The compressor is the motor you are sizing it for, and a 15k btu compressor is a bit over 1 hp (mol), plus the capacitor is the same size as stock (88-108 mfd).

I actually disagree with Supco as to recommending the E series- they don't, I do. The reason they do not recommend it is it will recycle immediately- if you turn the compressor off then right back on, it will kick in, whereas the PTCR type (like stock) will not. My answer is to not turn the a/c off then right back on, plus most thermostats will prevent this.
My reason for recommending the E series is that running on a generator, the generator will sag briefly. The E series has a "potential" type relay which will keep the capacitor in the circuit until the compressor is running at 75% of speed. The original PTCR type (which the non-E series are) are time based, so they drop out even if the compressor is not running at speed.
The SPP6 is functionally identical to the stock Coleman start kit anyway.

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