Hard Start Capacitor install issues

[drumming102]

Hey guys,

I have a dometic AC unit on my Passport 2920BH. It's like a polar ice 2 or something like that (13.5). It also has a 5-6 sec delay compressor start after fan.

I purchased a Supco SPP6 https://www.amazon.com/gp/product/B008FM8X3Q to install on the run Capacitor.

When I cracked open the electrical box I found only 1 capacitor instead of an expected 2. Are they combined? The wiring diagram almost makes it look like they are.



Well I hooked up the relay side (with the extra prong) of the SPP6 to the red wire post and the other to the white (As per the schematic) and it seems like my genny takes an even bigger hit when it starts and stumbles more. Is my cap bad? AM I reading the diagram wrong?





I even tried reversing the SPP6 wires

"Help me RV.net forums, you're my only hope"

Genny is a 3100 Champion inverter. It runs the AC but just trying to make the start a little easier on it.

[drumming102]

lawrosa wrote:
What supco is that?

Edit... Never mind I see the link... give a a minute...

Soft start/easy start is a better product IMO.. A bit pricey but worth it..
https://www.microair.net/collections/easystart-soft-starters

way to pricy since the genny does start and run it now. Just wanting to make it easier on it.

[j-d]

From the diagram and the pictures, you have a two-in-one Run Capacitor. The Compressor runs on HERM and COMMON. Chances are only HERM (Compressor) and FAN are marked, and COM is the third one.
The SPP6 has two wires that go to HERM and COM. Doesn't matter which is which. The SPP6 contains a Start Capacitor and a Positive Temperature Coefficient Resistor (PTCR) to take it out of circuit when it thinks the compressor is up to speed.

You diagram shows the equivalent starting device labeled "Comp Start Assist" with its Red and White wires going to HERM and COM on the two-in-one RUN capacitor.

IF IF IF the Comp Start Assist was an option and it's NOT already there, then you can add SPP6. If it's already there, DO NOT add SPP6 as a second one.

[lawrosa]

Cant tell the model off amazon you got......

but you need a Positive Temperature Coefficient Relay model..Thats per your schematic..

Can you verify?
http://www.supco.com/web/supco_live/products/SPP6.html

[lawrosa]

What supco is that?

Edit... Never mind I see the link... give a a minute...

Soft start/easy start is a better product IMO.. A bit pricey but worth it..
https://www.microair.net/collections/easystart-soft-starters