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Old 08-10-2015, 04:36 PM   #31
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I have a bit of a newbie question... I have a Coleman Mach 3 plus A/C unit and I read in a lot of places that the Yamaha 2400ISHC should be more than enough to run it as long as nothing else is...


The problem I am having is that It's not. I turned off all the breakers except the main and the AC and still nothing. Am I doing something wrong or does the generator just not have the juice?
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Old 08-10-2015, 05:22 PM   #32
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I have a bit of a newbie question... I have a Coleman Mach 3 plus A/C unit and I read in a lot of places that the Yamaha 2400ISHC should be more than enough to run it as long as nothing else is...


The problem I am having is that It's not. I turned off all the breakers except the main and the AC and still nothing. Am I doing something wrong or does the generator just not have the juice?
Altitude matters. How high were you when you attempted to start the Coleman Mach3? If I recall gas engine loses 3% output per 1k feet. So at 5k ft you are only operating at 85% capability.

There are others who know these technical facts much better than I, hopefully they can clarify if I am incorrect.

Also is you Coleman Mach 3 a 13,500 or 15,000 AC? The Yamaha documention specifically refers to 13,500 high efficency air conditioners.
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Old 08-10-2015, 05:57 PM   #33
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Yup, that was my question too. 15k or 13.5k unit?
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Old 08-10-2015, 10:53 PM   #34
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We sold our 10 year old honda 2000 for 600.00 and bought a champion 3100 with auto start. It has enough power to run one air conditioner. We paid about the same price as new honda 2000 that does not have the surge power to start an air conditioner. Remote start and stop is an awsome feature.
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Old 08-11-2015, 06:36 AM   #35
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I bought a Honda EU6500is when I bought my fifth wheel, and have not regretted it. It will run the entire camper (including both air conditioners) 24/7 and it is not noisy. It fits in the basement for transport.
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Old 08-11-2015, 09:21 AM   #36
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Altitude matters. How high were you when you attempted to start the Coleman Mach3? If I recall gas engine loses 3% output per 1k feet. So at 5k ft you are only operating at 85% capability.

There are others who know these technical facts much better than I, hopefully they can clarify if I am incorrect.

Also is you Coleman Mach 3 a 13,500 or 15,000 AC? The Yamaha documention specifically refers to 13,500 high efficency air conditioners.
Good tip on the Altitude, but I should still have enough Amps ( I think)

The A/C is 13,500 BTU
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Old 08-11-2015, 09:22 AM   #37
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Sadly in Canada, Paralleling the generators is not CSA approved so I'd have to get them from the US...
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Old 08-11-2015, 09:48 AM   #38
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That's surprising. That Yamaha is supposed to handle the load.
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Old 08-11-2015, 09:50 AM   #39
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Old 08-11-2015, 10:15 AM   #40
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My Yamaha 2400ishc starts my 15K unit. But I am only around 1200 ft
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