25BHS with Coleman 13,500 BTU A/C: will Yamaha EF2400iSHC run it

[Zad]

Hi Folks,
I have read many threads on this topic, spoke with both Coleman and Yamaha, and thus far I have been unable to get a definitive yes or no on whether the gen will run the ac. The Coleman ac is model 8333E7564 and uses between 15.75 and 16.25 A on startup and pulls between 1000 and up to 4100 watts on startup. Coleman sais that the 4100 watts is absolute worst case scenario. I have read that some folks here are having no troubles with their 13,500 btu units and this genny however I am hoping to find someone who is running this exact combination. I am willing to install a hard start capacitor kit if needed. I do realize that the 3000 genny unit would likely be a safer choice however it won't fit easily under our tonneau cover and I am hoping to spare my back a few pounds.

[xkuzme1]

From what I understand, the Yamaha was made specifically to run a 13500 btu AC. I would say with a hard start capacitor, you'd be golden.

If you are nervous about that, you could buy 2 champion or 2 Honda and pair em together. You can but 2. Brand new champion 2000 watt Benny's for $900

[33 RLDS]

I own the Yamaha. I do not think it was made specifically to run AC units in trailers. It does not even have a 30 amp plug. You have to use an adapter which trailer companies, including Jayco, say never to use. That being said, using an adapter, mine ran the 13.5 AC unit in our 2011 Forest river 21SS every time and so far in 75 degree weather, it started the 15K unit in our Jayco 33RLDS. I am not sure if it will in warmer weather though. I love the Yamaha and at 75 lbs I can hoist it in the truck by myself..

[Rustic Eagle]

Yes, the Yamaha EF2400iSHC will run a 13,500 BTU A/C, it's marketed to do so. Yamaha states: "This High Current model starts most high efficiency 13,500 btu AC in temperatures up to 110° F."

Ref: http://www.yamahamotorsports.com/out.../features.aspx

http://www.jaycoowners.com/showthrea...aha+ef2400ishc

Bob

[Zad]

I ordered the 2400 yamaha generator today along with the supco spp6 capacitor, will let you know how it goes. Thanks for your help.

[2edgesword]

Originally Posted by Zad

I ordered the 2400 yamaha generator today along with the supco spp6 capacitor, will let you know how it goes. Thanks for your help.

I didn't see a response from Zad so I thought I'd share my experience.

My A/C unit is an Airxcel 13.5K btu model 8333E7564. My Yamaha 2400ishc would start the A/C unit as long as I didn't have any other high power draw items running (microwave, coffee pot, electric grill, etc.). That said you could tell the generator was near max output and it typically took 6 ~ 8 seconds for the A/C unit to start. On a couple of occasion the generator overload would kick in and knock the generator off line. A second try after a few minutes to let pressure equalize would ultimately start the A/C unit.

Not satisfied to work the generator to the limit every time I started the A/C unit, today I install a Supco SPP6 start capacitor to see if there would be any improvement. I'm glad to inform that with the start capacitor installed the A/C unit would start within 1 second after turning the unit to the cool setting. The capacitor appears to add the required boost at start-up to prevent the generator from having to stay in a max output mode for 5 seconds or more to get the A/C running.

Installation of the start capacitor takes all of 2 minutes once you have the A/C shroud off and remove the access panel. The start capacitor has two leads. You clip one lead of the start capacitor to a terminal of the run capacitor (in my case where red wire is located) and the other start capacitor lead goes to the other run capacitor terminal (in my case where yellow wire is located). These are non-polarized capacitors (even though the diagram depicts polarized by the symbols "-|(-" ) so which lead of the start capacitor goes to which terminal of the run capacitor doesn't matter as long as they are opposing terminals.

For $15 and a half hour of your time it appears to be an easy solution in situations where a generator an A/C start-up are borderline.

[hotrod51]

This is a little off topic. but will the eu3000 Honda run the air with out a problem?

[tnchuck100]

Originally Posted by hotrod51

This is a little off topic. but will the eu3000 Honda run the air with out a problem?

Yes.

[Codiac]

Hope that 2400 works for you. My brother bought one and it wont run his 13.5 when you get over 6, 000ft or something else is running.

[2edgesword]

Originally Posted by Codiac

Hope that 2400 works for you. My brother bought one and it wont run his 13.5 when you get over 6, 000ft or something else is running.

The higher altitude will reduce generator performance. Tell him to install a start capacitor ($20 and 30 minutes of labor) which will boost the power available to start the A/C unit.

[GoldMiner]

We ran this generator this summer with the coleman mach 13.5k A/C. It would not start the A/C until I installed the hard start cap. Now it starts it up but it does hesitate for a 1/2 second or so. Once the A/C compressor shuts off and comes back on while cycling the generator takes a hit and the A/C fan stops blowing until the generator catches up. This usually happened overnight when I was also charging the battery. I never had a chance to turn off the battery charger in the 17c so it will have to wait til next summer. I hope it makes a difference though because it certainly is not good for the A/C or the generator.

[2edgesword]

Originally Posted by GoldMiner

We ran this generator this summer with the coleman mach 13.5k A/C. It would not start the A/C until I installed the hard start cap. Now it starts it up but it does hesitate for a 1/2 second or so. Once the A/C compressor shuts off and comes back on while cycling the generator takes a hit and the A/C fan stops blowing until the generator catches up. This usually happened overnight when I was also charging the battery. I never had a chance to turn off the battery charger in the 17c so it will have to wait til next summer. I hope it makes a difference though because it certainly is not good for the A/C or the generator.

Operating conditions (temperature, altitude, other stuff running) will affect the situation. The only thing I can't run while running the A/C on generator is the microwave. Lights, television, water pump, etc. don't seem to cause an overload but my camping has been at sea level or pretty close to it.

[GoldMiner]

we ran at 400ft 85 to 95f. we could lights and TV too, that is until a/c cycled, then it powered off. Batteries were low and charging though.

[2edgesword]

Originally Posted by GoldMiner

we ran at 400ft 85 to 95f. we could lights and TV too, that is until a/c cycled, then it powered off. Batteries were low and charging though.

One issue with respect to cycling would be the time period between the compressor shutting off and turning back on. If the pressure hasn't had time to equalize (a few minutes) it may be too high for the available power to get the compressor started again.

Beyond that, from trailer to trailer, even with the same size A/C, various loads can be the difference between the generator getting the compressor going versus the power demand tripping the overload protection. So far I haven't had any issues with A/C operation, including cycling, as long as I'm not running the microwave. It sounds like you'll need to figure out a power management system that eliminates the problem or invest in a high output generator.

[GoldMiner]

Originally Posted by 2edgesword

One issue with respect to cycling would be the time period between the compressor shutting off and turning back on. If the pressure hasn't had time to equalize (a few minutes) it may be too high for the available power to get the compressor started again.

Beyond that, from trailer to trailer, even with the same size A/C, various loads can be the difference between the generator getting the compressor going versus the power demand tripping the overload protection. So far I haven't had any issues with A/C operation, including cycling, as long as I'm not running the microwave. It sounds like you'll need to figure out a power management system that eliminates the problem or invest in a high output generator.

Do you keep your battery charger circuit on?

[2edgesword]

Originally Posted by GoldMiner

Do you keep your battery charger circuit on?

Yes, the battery charging circuit is still on although I don't think it presents a significant load for the generator.

[MTDreams]

Hi 33. Can you help me with the ADAPTOR? Since there is no 30amp plug which adaptor are you using? I have both a <30a to 20a> and a <30a to 15a> for plugging into home. I was told not to try to run the A/C off of an extension cord even on the 20a adaptor. So how can you run an a/c unit off of this genny when there is no 30a plug?

[Imnaha.Mansion]

Some generators do have a 30A outlet, if the generator is large enough. If your generator doesn't you can pair two generators with an adapter that has a 30A outlet. Honda and Yamaha does this.

[norty1]

I know several who run a 13.5 ac on a honda 2000i. It has a 20a outlet. Any other load will shut the gen down.

[Jmooney]

Originally Posted by 2edgesword

Yes, the battery charging circuit is still on although I don't think it presents a significant load for the generator.

If your battery charger is running at full , perhaps 45 amps, you are pulling 600 watts, which at 115 volts is over 5 amps.

That's a huge portion of Genset capacity.