Yamaha 2000 problems

It sounds like something isn't right with the daisy chain wire kit. It sounds like only one generator was trying to carry the load since the other one was not increasing its RPMs.

You can / will get 124.7V off of one generator or both, but it sounds like only one was putting power into the wiring harness and therefore you were only getting the 2000 watts from one generator, not the combined wattage needed to power the AC.

Bill

It's too easy to get fooled because of measuring voltage from the generator not in circuit. Measure voltage at both generators.

Have you checked the oil in the one that will not rev up? If it doesn't have sufficient oil, it will only run at ECO RPM. At least that is the way mine works.

I also had trouble when mine were on an uneven surface.

I've been having problems with my 2 Yamaha 2000s also.
One of them, the same one every time will go into overload and then the a.c. shuts down.

I'm seriously considering even though the trailer is new getting a high efficiency A.C.

Measure the voltage coming out of the cable with it connected to only one generator, and then the other. This should verify the cable and both generators' ports are good.

Why are volts being discussed instead of amps? A 99 cent extension cord from Dollar Tree will deliver volts but it won't run my ACs.

I have 2 honda 2000s with the twinning cables. They are colour coded. Do you have them plugged into the same ports on each genny? Just an observation.

Not sure if this is a helpful question, or a proof of a lack of knowledge.

Does the parallel kit for the two Yammies, allow you to switch the connections at the generators? If you can do that, does the problem "follow" one generator, or stay with one "leg" of parallel kit?

Welder99 wrote:
Also I have the soft start capacitor on the AC. Any input would be helpful.

I doubt you have a soft start cap but rather a hard start cap such as a SUPCO SPP6 or similar. If so, that's part of your problem as a hard start cap will only provide a limited improvement in trying to start the A/C's compressor motor, regardless of the source.

Presuming both of these Yamaha gensets individually produce their rated output (have you checked with a voltmeter to confirm this?) I'd suggest you forget about using two 2K gensets to power your A/C and instead use just one. Possible? - absolutely, if you fit your A/C with a true soft starter such as the Micro-Air Easy Start. There are enough testimonials here on rv.net to prove this device does work, reducing A/C compressor start up draw by as much as 70%, which is far beyond what a hard start cap can do.

did you interconnect the generators and then start, or start and then interconnect?

my twins will only run my AC when they're connected first, and then started, probably so the digital inverters in both generators can synchronize. if I connect them after they're running, I experience the exact issue you describe.

just throwing the simple things out, you have ECO mode off right?