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Old 07-23-2015, 07:33 AM   #1
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Join Date: Jul 2015
Location: Petitcodiac NB.
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Coleman ac not starting with generator

I have a 1997 Coleman AC on my RV and it runs fine when I am plugged into house electricity but when I go to use my generator it does not want to start sometimes it will most times it won't so I was reading online and some people said to use a hard start capacitor so I purchased one an SPP 6 starter power RPAC hard start capacitor but it says on the package install only with PSC equipped with run capacitor I don't know what this means so I don't know whether I should install it or not can somebody help me thank you very much.

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Old 07-23-2015, 07:43 AM   #2
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Does this help?

I would do some reading on forums of people who have done this and it may give you more info. If not, I would hold off until you are sure of which way to go.

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Old 07-23-2015, 08:43 AM   #3
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Your generator may not be supplying the voltage needed. Low voltage can cause this problem and can eventually damage the compressor. If you have the 15K BTU roof A/C, and/or because the unit is 18 years old, it may require a strong 120V supply. Smaller generators struggle with the demand for starting a compressor motor. I suggest you check your generator's voltage supply and ensure it is up to the task.

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