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Old 08-05-2016, 05:53 PM   #21
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Probably not the problem of discussion, but merits a mention. My Coleman Mach fused a relay and would not shut off. The problem was caused by the manual thermostat being turned on and off quickly. No delay in the thermostat. If you have a manual thermostat you would be wise to replace it with a digital. Coleman has a 5 year warranty which should cover the OP's problem.
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Old 08-05-2016, 05:53 PM   #22
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Coletraom182....don't try testing a capacitor with a digital meter. If the cap has a charge to it,,,it'll hurt your meter. Before the capacitor testers, which measured the MFD ratings came out, I used an analog meter that was great to see if it's charged and bleeding properly.....but don't try it if you're not familiar with it. There is a remote possibility that you have a dual capacitor,,,,,it'll have three terminals on it. If it's ballooned up, replace it,,,,but it's absolutely critical that you make sure all the wires go back to where they were.
There're too many things you need to be aware of with a digital,,,,,shorted in its windings, shorted to ground, open windings,,,,,,just replace the little one and if you have only one cap with three terminals, replace that one.
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Old 08-05-2016, 06:46 PM   #23
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You really can't test a capacitor with a digital meter. The old analog Simpson meters were great for it once you knew what you were doing, but not the digital ones.

You're A/C is probably only going to have one capacitor. It'll be a dual unit. If it has a second cap, it'll be for the compressor.
A digital meter will work, first you need to short out the capacitor with a screw driver then put it to ohms. It should go all the way to infinity and drop down to zero. But you need to short out the terminals same as a simpson. They only use a duel capacitor in these units. If it's leaking or bulging it's bad. Not many of them go bad, unless something is shorting out. Make sure you replace it with the right MFD's.. Sorry Grandpa you must have posted the same time, but you are 100% on the money.
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Old 08-05-2016, 07:01 PM   #24
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You're right on also WitchDoctor. I didn't go into detail about testing with a digital, because somebody could get in a lot of trouble trying it if they aren't experienced with what electricity can do to ruin your day.
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Old 08-06-2016, 02:29 AM   #25
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I think he has a coleman not a dometic, I know of zero 8289WS with dometic, even the refer is a Norcole, only garbage Dometic stuff is the awnings x's 2. I don't know of any changes to that very popular unit, and there are very few problems. Very well built for FR, same as the Flagstaff come off the same line....
Our AC is Dometic as is the fridge. Humming huh? Hmmm... low voltage maybe?
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Old 08-06-2016, 04:55 AM   #26
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Our AC is Dometic as is the fridge. Humming huh? Hmmm... low voltage maybe?
Well I stand corrected, now I have heard of one. That's to bad they made a switch...
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Old 08-06-2016, 10:11 AM   #27
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I was wrong it is a Coleman. I had a big capacitor and a small oneClick image for larger version

Name:	ImageUploadedByForest River Forums1470492571.664124.jpg
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ID:	116436im gonna try to replace both and see if that works. I really appreciate everyone's input!! We got some smart cookie in this bunch! I will give you a update in a little bit. On the way to the parts store now.
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Old 08-06-2016, 10:34 AM   #28
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So I am at the supply house and they put their tester on both capacitors. The big one read 60mFD and the small one read 7.5mFD. They said they were both good. So I went ahead and bought the small capacitor because they didn't have the big one. So I guess I'll see if that works if not then I guess I have a bad motor. Right?
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Old 08-06-2016, 11:52 AM   #29
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Okay everyone seems that the thermostat is bad. I tried cutting it on Auto high and it would not come on so I checked my connections on the capacitor one more time to make sure I had it right. Connections were right and locked into place. I tried cutting it on auto High again and nothing so I then switched it the right to the low position on the ON side and what do you know it came on and is blowing cold. So my next question is I guess I have a bad thermostat. Which thermostat is the best one to replace it with and can I get it at Lowe's?
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Old 08-06-2016, 12:29 PM   #30
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Okay everyone seems that the thermostat is bad. I tried cutting it on Auto high and it would not come on so I checked my connections on the capacitor one more time to make sure I had it right. Connections were right and locked into place. I tried cutting it on auto High again and nothing so I then switched it the right to the low position on the ON side and what do you know it came on and is blowing cold. So my next question is I guess I have a bad thermostat. Which thermostat is the best one to replace it with and can I get it at Lowe's?
Any honeywell battery will work, Some people put in a set back but I think it's a waist of money unless you have park model or a full timer living in it for work. Remember you will only have one fan speed unless you add a switch. Cost between 21.00 to 31.00. also some put in a hunter I like honeywell better IMO. DO NOT HOOK THE GROUND UP....
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