Capacitor Wiring Question

[apittmanii]

Live in RV Park, mobile RV techs have 3 month wait due to damage from freeze earlier this year. Temps rising in Texas quickly so trying to help each other out

Neighbor’s A/C compressor sometimes not starting. Replacing her capacitors & and control board to her RV air conditioner. I am replacing two capacitors with a single dual run capacitor.

Photo 1 is wiring schematic. Photo 2 is the fan capacitor. Photo 3 is the compressor capacitor. Photo 4 is the new dual run capacitor that replace the other 2.

I do not believe the posts on top of old single run capacitors are labeled for polarity. My understanding is that non-polarized capacitors have symbol of 2 strait lines parallel to each other, and polarized have the strait / curved line as shown in schematic.
Question please: Am I reading schematic correct as showing polarized capacitors? If they are not labeled, how would one know where to connect the wires to a capacitor?



The new capacitor seems strait forward - C for common, F for fan, and H for compressor. Thank you.

 

[Jim greengo]

You should just need a coommon/power wire and brown from fan and blue for compressor I do believe if it's like a normal ac.

 

[Bert_]

AC capacitors are not polarized.

Problem I see is that there is no common wire between the two capacitors. I don't think you can use a dual fan/compressor capacitor here. I would stick with what was in there originally and get two separate capacitors

 

[Terry D]

I agree with Bert. You have to go back with two separate capacitors. There is no common wiring between the two.

 

[rlitman]

AC capacitors are not polarized.

Problem I see is that there is no common wire between the two capacitors. I don't think you can use a dual fan/compressor capacitor here. I would stick with what was in there originally and get two separate capacitors

AC capacitors are not polarized. But I would first check for resistance between terminal 1 and 9. I'll be you measure 0 ohms.

 

[Terry D]

AC capacitors are not polarized. But I would first check for resistance between terminal 1 and 9. I'll be you measure 0 ohms.

If this is a 120 volt AC, I would think if you read voltage across 1 and 9, you would get 120 volts

 

[bonneyman]

Tons of diagrams listed in Pinterest.

Capacitors For Compressor Wiring Diagram | Hvac compressor, Ac capacitor, Capacitor

Jun 24, 2022 - This Pin was discovered by Koos Venter. Discover (and save!) your own Pins on Pinterest

www.pinterest.com

 

[Terry D]

Tons of diagrams listed in Pinterest.

Capacitors For Compressor Wiring Diagram | Hvac compressor, Ac capacitor, Capacitor

Jun 24, 2022 - This Pin was discovered by Koos Venter. Discover (and save!) your own Pins on Pinterest

www.pinterest.com

There is no reason to try and rewire it and possibly confuse the OP. If he is just having problems with the compressor starting, he could use that dual capacitor and just use the C and HERM terminals. It would just use the 60 mfd side.

 

[apittmanii]

Thanks everyone for your help here. Based on these responses, I plan to still use that new capacitor and put nothing on the F terminal, and just use the C and HERM for the compressor.

I’ll purchase a separate dedicated 7.5 mf capacitor for the fan. Two capacitors out, two capacitors in.

I figured I’d get solid guidance on here, very grateful for the assist and I’m sure the lady next door will be as well.