Interesting thread. I just experienced this exact thing today with my gen shutting down running a single AC unit and nothing else. About 105 deg today so I did not know if I was having a problem with a fuel line getting vaper-locked - that is what is acted like when it shut down, and it would not re-start until some time had passed. It still should not be shutting off like this running only the AC on low fan... I will try again tomorrow and check the codes. For the record - my gen shows over 1000 hours but seems to run well and smoothly right up to where it shuts off.
This is my first rig with a gen so new territory for me. I also was not aware that there were fault codes or where to look for them. Thanks for the info! This rig came with no manuals or documentation so the interweb has been getting abused...
Just checked the faults - I had 33 and 36. Not sure on coolant on my 2002 4K - I will have to look and see, but I assumed it was air cooled. #6 is Engine stopped but not commanded to stop. Not sure on this one as I just filled above 1/2 tank and there should not be any issue picking up fuel. Unit will run forever with the ac off, and the ac seems to run correctly and not laboring. I can run it off a 15 amp circuit at home without a breaker tripping, but the cord does get warm. I guess I need to get familiar with this thing....
