In researching which generator to buy, I would have been helped by a video like this one, so I hope it helps someone else looking to buy.Yamaha running 15.5 btuSo far, the Yamaha has done everything I hoped it would. It will run the entire trailer including microwave. But the main reason for going with a little extra capacity was running my 15.5 BTU A/C. I would be happy with my decision even if it hadn't, but it's a nice plus that it does!For this video, I shut off all other circuits. I got the fan spinning on high first and then switched the compressor on. The gen bogged down for half a second, went up to a much higher rpm and then the compressor kicked over. Once running, the gen went back to about a half load and I ran it like that for 10 minutes.My unit is a 2013, so I'm not sure if that means it already has a hard start capacitor? I'm hoping it doesn't, and I plan to add one. With that, I should have no concern about it working.I'm at 1100 ft. elevation and the outside temp was about 63d.

Love my 2400 too. I can run the a/c and microwave at the same time.

I can almost guarantee you that while that generator will run (and I assume you mean runs and will also handle the cycling on and off) your 15.5 BTU A/C nut it is running it underpowered which in the long run is harmful to your A/C...

At 63 degrees your AC will start Very Easy. But at 90 or 95 degrees the freon Pressures will be much higher and it will start Much harder and use more current when running. My 2400 ISHC has a hard time starting my 13,500 AC when it is in the 90s but is fine after it starts the first time.So after a few years I fry my AC :( I've been looking at replacing it with a 9200 anyway :C

My 2KW Honda generator will not run my 13,500 BBTU air conditioner. I got it started once in doing the fan first and switching to compressor. Did ok then but when it cycled the next time it tripped out.I see the YAMAHA 2400i specs says it puts out 120VAC at 16.7AMPS so I guess that is the big difference. My 2KW Honda EU2000i says it puts out 120VAC at 13.3AMPS.I too think I will replace my off-road 13,500 Air Conditioner with a 9200BTU model if it fails. I never knew an exact RV trailer replacement 9200BTU model existed until a couple of weeks ago. As little as I use my 13,500 model the 9200 model would be great for me and i would able to run it with my 2KW honda just fine. I have already ran a 8000BTU house window unit in my trailer... My 13,500 model really sticks up high on my trailer roof.Roy Ken

I worded my first post wrong. The main reason for choosing the 2400 was not the AC. That will be a plus, but I don't suspect it will be necessary more than one trip a year (if that). So it won't happen often. No, I didn't run long enough for it to cycle, so that may prove to be a challenge.I really went with the 2400 because I saw value for the extra $200 over the 2000 models, and the extra weight isn't a problem for me. I'm using this as emergency use at home too, and the extra power will be useful in those cases.

Video: Yamaha 2400 running a 15.5 BTU | Good Sam Community

16 Replies

RoyB
Explorer II
Nov 21, 2012
I would install a cheap 120VAC meter movement inside the trailer somewhere where you can sort of keep an eye on the 120VAC levels when running your generator.

This 120VAC meter is perfect for me to watch my line voltage with. With the GREEN scale shown I can tell at a glance I am within the voltage level good enough to not do any harm with the air conditioner running to close to the limits to be dangerous.

Just plug it in to a 120VAC receptacle somewhere where you can get a glance at it once in awhile.

Roy Ken
tragusa3
Explorer
Nov 21, 2012
I worded my first post wrong. The main reason for choosing the 2400 was not the AC. That will be a plus, but I don't suspect it will be necessary more than one trip a year (if that). So it won't happen often.

No, I didn't run long enough for it to cycle, so that may prove to be a challenge.

I really went with the 2400 because I saw value for the extra $200 over the 2000 models, and the extra weight isn't a problem for me. I'm using this as emergency use at home too, and the extra power will be useful in those cases.
RoyB
Explorer II
Nov 21, 2012
My 2KW Honda generator will not run my 13,500 BBTU air conditioner. I got it started once in doing the fan first and switching to compressor. Did ok then but when it cycled the next time it tripped out.

I see the YAMAHA 2400i specs says it puts out 120VAC at 16.7AMPS so I guess that is the big difference. My 2KW Honda EU2000i says it puts out 120VAC at 13.3AMPS.

I too think I will replace my off-road 13,500 Air Conditioner with a 9200BTU model if it fails. I never knew an exact RV trailer replacement 9200BTU model existed until a couple of weeks ago. As little as I use my 13,500 model the 9200 model would be great for me and i would able to run it with my 2KW honda just fine. I have already ran a 8000BTU house window unit in my trailer... My 13,500 model really sticks up high on my trailer roof.

Roy Ken
Fuller_Johnson
Explorer II
Nov 21, 2012
At 63 degrees your AC will start Very Easy. But at 90 or 95 degrees the freon Pressures will be much higher and it will start Much harder and use more current when running. My 2400 ISHC has a hard time starting my 13,500 AC when it is in the 90s but is fine after it starts the first time.

So after a few years I fry my AC :( I've been looking at replacing it with a 9200 anyway :C
M_GO_BLUE1
Explorer
Nov 21, 2012
I can almost guarantee you that while that generator will run (and I assume you mean runs and will also handle the cycling on and off) your 15.5 BTU A/C nut it is running it underpowered which in the long run is harmful to your A/C...
elkhorn98
Explorer
Nov 21, 2012
Love my 2400 too. I can run the a/c and microwave at the same time.

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Video: Yamaha 2400 running a 15.5 BTU

16 Replies

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