I just spoke to a seemingly very knowledgeable tech at AIRXCEL about our specific model. He said that to figure start up current draw, multiply running amps by 2.5!! This equals 31 amps if running our units on low speed fan!
Next, in an hour or so from now when they open in Ca, I will talk with Yamaha and ask them why they say a 2400 watt, 20 amp max gen will run a 13,500 btu AC. Your Honda 3000 is rated at 25 amp max, and you are having problems with it. Go figure.
UPDATE - Just spoke with Yamaha rep. Long story short....Yamaha 2400 and Honda 3000 are advertised to run only "most" 13,500 btu RV ACs. Gens must be sized according to specific AC unit requirements. I don't think either gen will work for us.
Thank you Coleman!
Tom P in Virginia Beach, Va
2013 FR Mini Lite 2109S
2008 Jayco 25 RKS
2004 F350 TD LOADED!