Onan RV QG 5500 EVAP Error 33
- Thread starter alliss5
- Start date
david-steph2018
Well-known member
Here is one explanation of a code 33:
www.rvandplaya.com
Here is another:
thecampingadvisor.com
Everything I have read about code 33 is related to overheat condition. I have seen an article where the air-cool does not have a code 33, as stated.
Back in April a park we were at in Palm Springs, had an electrical issue. We were on/off generator power from Wednesday to Saturday, and the temps was around 105. The way I prevented the overheating was I left the bay door open and pulled the cover off the generator for better air flow.
How to Fix Fault Code 33 on Onan Generator? (Error Solved!)
Under certain conditions, your Cummins Onan generator may show the fault code 33 after shutting down by itself, by blinking the status LED on the control switch 3 times followed
www.rvandplaya.com
Here is another:
Fixing Onan Generator Fault Code 33 (What Does It Mean?)
This code seems to be missing from the manual as well. The reason for that omission is that the problem is an uncontrolled shutdown due to overheating.
thecampingadvisor.com
Everything I have read about code 33 is related to overheat condition. I have seen an article where the air-cool does not have a code 33, as stated.
Back in April a park we were at in Palm Springs, had an electrical issue. We were on/off generator power from Wednesday to Saturday, and the temps was around 105. The way I prevented the overheating was I left the bay door open and pulled the cover off the generator for better air flow.
Yes, we have found that too. From online research it's and overheating issue. We were running it with the compartment door open. We did not have the cover on the front off.I checked my 7 page Onan 5.5 trouble code PDF and for my model there is no code 33....it jumps from code 32 to 35.
Either you miscounted the blinks or my PDF doesn't cover your exact model for proper diagnosis.
Our temps were high yesterday, but not that high. Worried since we have a trip planned next week. We don't need the generator when we get there but would like to run it off and on traveling to keep it comfortable in the camper.Here is one explanation of a code 33:
How to Fix Fault Code 33 on Onan Generator? (Error Solved!)
Under certain conditions, your Cummins Onan generator may show the fault code 33 after shutting down by itself, by blinking the status LED on the control switch 3 times followed
Here is another:
Fixing Onan Generator Fault Code 33 (What Does It Mean?)
This code seems to be missing from the manual as well. The reason for that omission is that the problem is an uncontrolled shutdown due to overheating.
Everything I have read about code 33 is related to overheat condition. I have seen an article where the air-cool does not have a code 33, as stated.
Back in April a park we were at in Palm Springs, had an electrical issue. We were on/off generator power from Wednesday to Saturday, and the temps was around 105. The way I prevented the overheating was I left the bay door open and pulled the cover off the generator for better air flow.
carl.swoyer
Well-known member
Could be over heat
Sent from my SM-A526U using Tapatalk
Sent from my SM-A526U using Tapatalk
carl.swoyer
Well-known member
How many hours on the generator . I had to replace the belt on mine.
Sent from my SM-A526U using Tapatalk
Sent from my SM-A526U using Tapatalk
david-steph2018
Well-known member
140 hours, getting close to oil change time, I think it is at 150 hours.
When it is hot outside and we test the generator or need to run it because of loss of power, I remove the front cover for extra air circulation. Try keeping the front cover off and the compartment door opened for extra air circulation, it may help with the overheating issues.
How does the oil look? Since it was overheating, it may need an oil change before the trip. With the overheating issue, the oil may have broken down and not helping with the heat dissipation.
When it is hot outside and we test the generator or need to run it because of loss of power, I remove the front cover for extra air circulation. Try keeping the front cover off and the compartment door opened for extra air circulation, it may help with the overheating issues.
How does the oil look? Since it was overheating, it may need an oil change before the trip. With the overheating issue, the oil may have broken down and not helping with the heat dissipation.
carl.swoyer
Well-known member
Onan requires the front panel to stay on while the gen set is running. It is part of the air circulation designs
Sent from my SM-A526U using Tapatalk
Sent from my SM-A526U using Tapatalk
carl.swoyer
Well-known member
Are you still removing the panel off the front of the generator while its running?
Sent from my SM-A526U using Tapatalk
Sent from my SM-A526U using Tapatalk
david-steph2018
Well-known member
Great, glad draining a little amount of oil out that help it out.
carl.swoyer
Well-known member
Onan code 33 appears to be overheating.
Sent from my SM-A526U using Tapatalk
Sent from my SM-A526U using Tapatalk
Similar threads
