Forum Discussion
Golden_HVAC
Jun 26, 2014Explorer
Hi,
This picture was posted a few days ago. It shows the start capacitors for both the fan with brown wires and compressor with red and yellow wires. This post was about how to install a additional start capacitor, such as the SPP4E rated at 90 to 130 volts. This provides a extra "Kick" to get the compressor started.
You might have a bad run capacitor (the one with Herm and common or in this picture they are separate, and has the red and yellow wires.) or one that is to weak. I have tested some capacitors and find that some will read 30 MFD while the rating is 35 MFD +/- 10% (or 3.5 MFD), so I replaced the capacitor, and all worked well again, the amperage has gone back to normal.
Make sure that you do not buy the SPP6E rated at 190 to 280 volts.
This picture was posted a few days ago. It shows the start capacitors for both the fan with brown wires and compressor with red and yellow wires. This post was about how to install a additional start capacitor, such as the SPP4E rated at 90 to 130 volts. This provides a extra "Kick" to get the compressor started.
You might have a bad run capacitor (the one with Herm and common or in this picture they are separate, and has the red and yellow wires.) or one that is to weak. I have tested some capacitors and find that some will read 30 MFD while the rating is 35 MFD +/- 10% (or 3.5 MFD), so I replaced the capacitor, and all worked well again, the amperage has gone back to normal.
Make sure that you do not buy the SPP6E rated at 190 to 280 volts.
Golden_HVAC wrote:Beyer wrote:
I have a 1996 camper with a Coleman A/C. I bought the Supco SPP6E. My A/C has 2 round capacitors, one small and one large. The small one has 2 wires and the large has 3 wires. Which one do I replace? Both?
Pics:
http://i1372.photobucket.com/albums/ag321/beyer25/Mobile%20Uploads/image_zpsf3f66b5c.jpg
The small capacitor with wires going to the outside fan is the wrong capacitor. THe one with wires going to the compressor is the correct one. Typically the red and another color wire go to the compressor along with a black one. Don't connect to the black one. Use the red wire and yellow wires. You want those two connections.
You do NOT take out the factory capacitor, just add the second one to the compressor circuit to help shorten the time it spends in "Locked rotor" amperage, and shorten the time it takes to get up to full speed.
Make SURE that you put a screw into the existing capacitors tie down strap, or it can short to ground if the metal from the wires shorts our to the metal of the clamp.
If your compressor is not working right, then replace the small round capacitor with the red and yellow wires on it. It might be 25 MFD or 35 MFD, replace with the same size. Shape is less important, you probably can find one for about $10 that is oval, or round one for a couple bucks more.
Fred.
About Motorhome Group
38,706 PostsLatest Activity: Feb 01, 2025