First-level fault code is a 3 which according to the operators manual indicates shutdown due to some other abnormal condition. The second-level fault code is 24. That code is a coolant temperature sender fault. States controller did not sense temperature change during first 5 MINUTES of operation. Now I know why it shuts down after 5 minutes. Manual states the “corrective action” is to see an authorized Onan dealer. Has anyone had this condition? If so, is it likely to be a sensor, the board, thermostat, etc?
