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Old 07-14-2016, 12:42 PM   #1
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Adding SPP6 hard start capacitor to Dometic 15000 btu AC

Can someone point me to a thread about this? I have searched and found threads about coleman and dometic 13500, but not the 15K.

Thinking about adding a hard start.
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Old 07-14-2016, 11:55 PM   #2
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Why?
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Old 07-15-2016, 07:13 AM   #3
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Because I run AC off generator and any extra start up help won't hurt. It's only $12 and two wire hook up.

Why not?
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Old 07-15-2016, 07:33 AM   #4
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If I am not mistaken it was installed the same as it was on the 13.5 unit. Did it to ours 2 years ago, and the only thing I remember being different was the box was slightly smaller and it was also a tight fit length wise.
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Old 07-15-2016, 10:19 AM   #5
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Are you sure you don't have one already?
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Old 07-15-2016, 12:16 PM   #6
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I don't believe so. I only saw one oval shape capacitor. Something like this, I just briefly glanced at it.
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Old 07-15-2016, 12:34 PM   #7
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If it has has a three terminal run capacitor... the terminals will be marked on the top of the capacitor. It should have a C term(voltage in... the one to use)), a Herm term(compressor..the one you want to use) and a F terminal(fan... pay no attention to this one). One terminal each goes on the Herm and common terminals. Polarity is not important. If is is a 2 terminal run capacitor then it is easy.

PS: these could be hot(charged). Use your meter to read the OHMS on the terminals several times reversing polarity as you proceed. This will discharge the capacitor safely. Don't forget to turn the power off.
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Old 07-15-2016, 12:51 PM   #8
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Back in 2015 I called Dometic customer service and asked about adding a Hard Start to my 15K and they said it was necessary because they now are already engineered for Hard Start. I've been running both my 15K and my 13.5K on generator multiple times and have experienced no issues. They seem to run fine. Once, when it was very hot and the 2 units had both cycled down, they attempted to both come back on at the same time. The generator shut down with overload. I restarted the gen, restarted the 15K, waited about a minute or 2 and restarted the 13.5k and they ran all the rest of the day just fine.

Most of the time, we only run 1 A/C at a time. Bedroom 13.5 while we are in the Living Room and then 15K Living Room while we are in the bedroom at night. This puts the noise furthest away.
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Old 07-15-2016, 04:39 PM   #9
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Quote:
Originally Posted by Captain America View Post
Because I run AC off generator and any extra start up help won't hurt. It's only $12 and two wire hook up.

Why not?
What generator do you have? And yes, capacitor will only help.
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Old 07-16-2016, 07:10 AM   #10
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Anyone tried the EasyStart by Micro Air?

This is what they claim:
Test: 16,000 Btu 115v Compressor

Before: EasyStart installed:
- 72 amps peak inrush current on mains power
- Would not start on Honda 2000i portable generator

After: EasyStart installed:
-32.5 amps peak inrush current on mains power
-Started easily from Honda 2000i portable generator


I'd love to run my 13.5 with my Honda 2000, but would like someone else to confirm that it works before I do.
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