Onan Generator 7500 Quiet Diesel
Having problems with my generator, Onan 7500....runs OK until I turn my A/C on. When it loads up the generator will run about 5-10 minutes and kill. I am getting three blinking lights on the switch ...
Forum Discussion
OK, brought coach to have my generator checked out for previous stated problems. Technician found the Fault Code No 36 and checked out unit. Could not find any problems so I instructed him to change Oil & Filter, change out fuel filter and air filter plus anything else that he thought necessary to eliminate issues.
Tech ran it for 2 1/2 hours with a full load, no problems and I ran it for another 2 hours, no problems.
Left for a day trip about 220 mile r/t. Generator worked great on the way down. Parked coach left generator running with full load and was gone maybe 3 hours. Came back to coach, generator had stopped running..checked oil level-OK, Fault Code again was 36. Restarted unit but was a little sluggish and I had to hold down on my start button until it started. I normally don't have to do that once the glow plugs heat up it cranks with ease. It stopped again on the return trip after parking for about an hour to eat dinner. Came back out and generator had stopped again....cranked again and ease the load by cutting rear A/C off running just the front...ran OK all the way back home which was about 2 1/2 hours, no issues..
I am bringing it back to the repair facility in the morning in hoping they can find the problem....I am beginning to think it could be in the coolant and/or thermostat? Confused by not giving up !
Any suggestions would be greatly appreciated....sorry for the long message.
Tech ran it for 2 1/2 hours with a full load, no problems and I ran it for another 2 hours, no problems.
Left for a day trip about 220 mile r/t. Generator worked great on the way down. Parked coach left generator running with full load and was gone maybe 3 hours. Came back to coach, generator had stopped running..checked oil level-OK, Fault Code again was 36. Restarted unit but was a little sluggish and I had to hold down on my start button until it started. I normally don't have to do that once the glow plugs heat up it cranks with ease. It stopped again on the return trip after parking for about an hour to eat dinner. Came back out and generator had stopped again....cranked again and ease the load by cutting rear A/C off running just the front...ran OK all the way back home which was about 2 1/2 hours, no issues..
I am bringing it back to the repair facility in the morning in hoping they can find the problem....I am beginning to think it could be in the coolant and/or thermostat? Confused by not giving up !
Any suggestions would be greatly appreciated....sorry for the long message.
