Onan 7000 - won't run when hot - code 47
Hi all, Generator has been finicky lately. Last summer we drove 5000 miles out to Nevada and back (to SC) and the genny didn't have a hiccup in all that heat. This summer, on our latest trip it...
Forum Discussion
TriumphGuy,
How long have you had this generator? What oil are you running in it?
Our Onan 7000 had an issue that if I used the multi-viscosity oil recommended by Onan, it would often shut down while travelling down the road, but only during the hottest days of the summer. Keep in mind, we generally travel Pennsylvania and north, so REAL HOT days, compared to down south, are pretty rare. You undoubtedly experience hotter days than we did at the time we had our problem.
Under these hot conditions, the generator would shut-down when the coach went over a rough bridge expansion joint, a moderate pothole or even hard braking. In fact, I even think I remember it shutting down while going around a curve. It would start right back up. It would run fine at any temp when parked. I always "topped off" the oil to the proper level before heading out on the road, so I know it wasn't low on oil.
After observing the phenomenon for the first couple of years of ownership, I surmised the problem was the oil level switch cutting off the ignition because the oil was too thin when HOT. I think I was using 5W-30 at the time. I noticed that as long as it was used above freezing, straight SAE-30 was also acceptable. I picked up a couple of quarts and put them in. That was over 10 years ago and I have not had the problem since. I know that 5W-30 should be equivalent to a 30W when hot, but my generator could tell the difference! LOL :) So, I use straight 30W every time. Spent all last summer in Florida and never had an issue.
Sorry, I never checked for a code. Back then, I was still pretty "green" with this "RV Stuff" and didn't even know the generator would give a code.
Not sure if this is your problem, but if "No ignition signal at P1–15 for 1 continuous second" or "uncommanded stop" includes the situation where the oil level switch cut-off the ignition, maybe it is related.
Good Luck,
~Rick
How long have you had this generator? What oil are you running in it?
Our Onan 7000 had an issue that if I used the multi-viscosity oil recommended by Onan, it would often shut down while travelling down the road, but only during the hottest days of the summer. Keep in mind, we generally travel Pennsylvania and north, so REAL HOT days, compared to down south, are pretty rare. You undoubtedly experience hotter days than we did at the time we had our problem.
Under these hot conditions, the generator would shut-down when the coach went over a rough bridge expansion joint, a moderate pothole or even hard braking. In fact, I even think I remember it shutting down while going around a curve. It would start right back up. It would run fine at any temp when parked. I always "topped off" the oil to the proper level before heading out on the road, so I know it wasn't low on oil.
After observing the phenomenon for the first couple of years of ownership, I surmised the problem was the oil level switch cutting off the ignition because the oil was too thin when HOT. I think I was using 5W-30 at the time. I noticed that as long as it was used above freezing, straight SAE-30 was also acceptable. I picked up a couple of quarts and put them in. That was over 10 years ago and I have not had the problem since. I know that 5W-30 should be equivalent to a 30W when hot, but my generator could tell the difference! LOL :) So, I use straight 30W every time. Spent all last summer in Florida and never had an issue.
Sorry, I never checked for a code. Back then, I was still pretty "green" with this "RV Stuff" and didn't even know the generator would give a code.
Not sure if this is your problem, but if "No ignition signal at P1–15 for 1 continuous second" or "uncommanded stop" includes the situation where the oil level switch cut-off the ignition, maybe it is related.
Good Luck,
~Rick
