Onan 5500 Generator runs fine under load shuts off with no load
Have an aggravating issue with my Onan 5500 generator, that hopefully someone on here as a solution.
Original problem, would not crank throwing a code 32. Took to a Cummins certified mechanic and had the following work done (drive system rebuilt under warranty, new carb, new rotor, new control board, new pins for switch, new oil and oil filter).. Just a few things.. Now am facing another issue. Unit cranks up well, runs well for a little while under idle, then shuts off. If able to get a load (2 ACs) on it, it will run for about 1 hr. and shut off. If I reduce the load or shut the load off at any point, the generator revs briefly, comes back down and will shut off in about 2 minutes. And unfortunately, the control board is not providing a code, which is stumping us and the mechanic. Help!!