I have a Yamaha EF3000SiB (3000 with 500 watt "boost") and my Coleman 15K Mach III will NOT run in ECON mode even with the Hard Start capacitor and Fan Motor Delay Relay. It DOES run fine in NORMAL even without that stuff installed. (just uses a LOT more gas).
Even with the fan motor not starting with the compressor, the start up draw of the unit still typically hits 24 amps for a few seconds, which is about the rated output of my generator with "normal stuff" going on in the camper (like converter).
Lou, Laura, & Freya the wonder dog
2008 GMC Sierra 3000HD Crewcab SB Allison Duramax
2019 Flagstaff 8529FLS - Pullrite 3300
HAM CALLSIGN - KC3FFW