Went from California to the Keyes down I 10 back I 40. And know that the generator will shut down if the gas gauge is around one quarter. So it didn't take me too long to decide to do some research and tear into it myself. This is my 2004 38N Fleetwood Bounder with quiet diesel Onan generator. http://community.fmca.com/topic/5332-onan-10hdkag-61731x-generator-has-low-voltage/. This makes troubleshooting a little bit more difficult. 2. Then check the engine oil level and look quickly for anything out of place, such as fuel or coolant leaks. And verify that the RV shop is experienced working with Onan Cummins generators. If none of the above solutions work and you arent great at DIY projects, it might be time to seek out a repair person. Self-diagnostic capabilities simplify troubleshooting. Could be an issue on the one leg. Sent all this info Sat. Here's what I've tried so far: Terry, Thanks, I did remove the top cover and could not see the back side of the 12V terminal connections (to check for corrosion) due to access restictions. Ordered all the thermostat parts from ebay, all OEM Onan parts for about $80, ordered the glow plugs from ebay as well, all OEM Onan plugs as well for what I thought was a WHOPPING price of about $150. My original problem was that the rear A/C was not working on the generator, but was working on shore power. Thanks for looking. This makes troubleshooting a little bit more difficult. They can also be picked up from junkyards where RVs have been discarded. For example, some Onan generators can run off both gasoline and liquid propane. Buy It Now. - Step #1: Overloading the generator - Step #2: Check the state of the air filter - Step #3: Exhaust system - Step #4: Spark plugs - Step #5: Fuel lines and filter Some solutions are very straightforward and fall under user maintenance, but some require specialized tools to diagnose and repair, and attempting them can void your warranty. Step #3: Check spark plugs . Also I replaced the 3 glow plugs due to the unit being extremely hard to start at first start up, would crank, crank, crank, cough, smoke, crank some more and finally start. Just because they can work with other brands doesnt mean they know how to repair Onan Cummins generators. Find out what the warranty will be from the supplier. Model 7.5HDKAJ11451H S/N G020388776. This allows you to conserve gasoline when youre away from civilization. This means that there is another problem with the generator. These generators pull fuel from the motorhome tank through a tube. Maximize the performance and life of your generator Onan generators are known for their high quality and dependable performance. I'm a 37-years-old author, traveler, writer, blogger, and a camper. That said, as is the case with any other appliance, Cummins RV generators can develop issues over time. First, that is not a governor actuator, it is a fuel shut off solenoid. Dave M Logged MCI7 20+ Yrs Foretravel w/ISM500 WG4T CW for ever. The breaker obviously went totally bad when I was dealing with the lack of power so that created the no power at all issue. While there can be several causes for this condition, the most frequent cause is a failed temperature sensor. It may not display this or other websites correctly. Their generators are typically compact and relatively quiet. It will take you to the list of fault codes and have instructions on what they mean and how to fix them. If the unit is truly overheating, then just shut it down and let the generator cool off for a while. However, it wont tell you outright it thinks the oil is low. Luckily, most small engine repair shops can work on these units. A good prestart checklist begins with extending the generator slide and removing the side access cover. It displays an error code 46 which the manual says is low voltage. That can be a problem when you see the 33 error code flashing. 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Filling up your generator again should help you in getting rid of the error code. I agree to RVshare's privacy policy. If you dont you could damage the inverter and create an expensive repair. As you just read, if you are not checking the oil regularly then the generator is not being lubricated properly causing the heat to build up and the sensor to shut the motor down. After that, you will have to check the sensor. I did see a another smaller fuse holder in the wiring behind the circuit breaker but have not checked it yet. Begin by checking the fuel level. Fixing Onan 7500 Quiet Diesel Generator Fault Code 33. Do you need extra air conditioning in your RV to stay comfortable? In most cases, your Onan generator is USDA Forest Service Approved. Other things to try include replacing the spark plugs and filters, running carb cleaner through the system, replacing the voltage regulator slip rings, and checking the circuit breaker on the back of the unit. $ 12.00 Add to cart. Finally, two wires are going from the carb to a shut off which houses a needle and an electromagnet. Running for awhile then shutting off sounds like it could be the fuel filter. Hamiltonbobs Premium Quality Oil Pan Gasket Made for IH International. Could it be overheating due to air flow issues out on the road. Thats especially true for consumable parts like spark plugs and air filters. And dont try to turn on too many things at once, since that can cause surges that trip the safety measures like the over-voltage protection. Especially if the unit is still under warranty. Place rag below sensor hole. Note that you can really run into problems if the gas tank float is off, so the generator turns off though you have a half-full tank. Unit new is over 8k, get this unit for under 4K, save a ton. If it is, then you may have a hard time replacing it as corrosion is known to freeze the sensor in place and you may have to remove the engine head to get to it. $. Were you able to do the test that I listed in my previous post? Do you have to reprime it to restart it? Mine is an HDKAK so it is a little different. The over voltage protections in particular tend to engage when you walk into the RV and turn everything on. hdkaj 11451d with only 610 hours. 500 lbs . After than it is a bunch of wires leading into the electrical panel, everything I could get to easily checked out. I done it completely by myself and although it was a little time consuming (about 5 hours start to finish) I was able to successfully make the repairs and reinstall it back in the RV and fire it right up. S8M 5303 built in 1969, converted in 2000, Bus Topics ( click here for quick start! We used the Generator about 75 hours with no issues. What if you dont have the manual? When you do not understand the code, have a list of codes ready to help you. You are using an out of date browser. The model generator you have should have an induction coupling for AC not the brush system. Notice that #33 is not listed there nor is #44. Three-point, fully focalized mounting system reduces vibration. Therefore, while many people prefer to visit Cummins-specific repair shops, others claim to have more budget-friendly repairs made at such places as lawn mower repair shops. Special sound-controlling housing encloses cooling system and muffler. It displays an error code 46 which the manual says is low voltage. Good luck! The issue with the circuit breaker was that it would just not reset and actually a couple of times before it took a couple of try's before it would re-set. Unfortunately the RV burnt to the ground due to an oil leak in the engine compartment, however the front portion where the generator was housed was not destroyed. In the future, top off your RV gas tank so that it never runs low. While that adds to the cost of your maintenance routine, it is a necessity because Onan generators are designed to run smoothly on high quality intakes. Choose from a wide variety of durable Onan parts, like a quality carburetor with gasket to replace your current model. There is no process to clear an error code, you just have to solve the problem and it will not display again. They loosen up at times and can ark or burn off the wire that was or still is connected at that point. Please feel free to contact me with any questions. It was taken out of our motorhome. While the Onan RV generators are an industry standard, not all service providers can and will have replacement parts in stock. Fixing Onan Generator Fault Code 33 (What Does It Mean? Allow the generator to run for 15 minutes, to ensure that the code has cleared. I didn't bypass the solenoid .I pulled the normal signal wire off the solenoid spade and connected momentarily an external battery to the solenoid spade. Unfortunately the RV burnt to the ground due to an oil leak in the engine compartment, however the front portion where the generator was housed was not destroyed. Do you have a dual fuel generator in your RV? I enjoy life as much as I can and love to visit beautiful places in my RV. RVshare Respectful Community Policy Al has contributed many blogs to RVshare, focusing on finding the best parts and accessories for your RV. Nearly all Onan generators also meet the National Park Service sound level requirement. Cummins Onan QD 7500 - 7.5HDKAT41934 - 7500 Watt Quiet Diesel Commercial Mobile Generator. For a better experience, please enable JavaScript in your browser before proceeding. Again, look to wiring connections. This is a 7.5 kVA Onan generator powered. You can avoid problems by making sure the oil tank is full. Steve F. RVIA Certification. If the generator is cutting off, check the oil levels. Here's the general procedure for. That's a new one on me!. 5 years RV repair and reconstruction, Fleetwood RV Training course completion. Can you post a picture and your complete model and serial number? Therefore, we recommend that those needing a more affordable solution look for used Onan RV generators for sale. This is a bit difficult to get done as first, there is a little confusion about what the blinking lights mean. YouTube is an excellent resource for learning how to make more complex repairs. This means you should turn on the RV generator before you turn on the roof-top AC to avoid tripping electrical safeties. The 7500 Quiet Diesel generator uses an Inverter/Control Board that monitors almost all your generator electronics. on your generator for the group ? Sounds like a poor ground connection somewhere. They can self-diagnose issues. Know how to sustain, maintain and repair common issues with the generator to minimize trips to the mechanic and maximize the running life of the most important equipment in the RV aside from the car motor. Know the right level of oil, because over-filling will cause the generator to shut off just as too much would. But I'll tell you, if you have a buddy to help hand you tools and such it would of made it a lot easier and you wont be as sore as I was from getting up and down, crawling under and out from underneath getting my own tools. Do not use this link to ask for help with RV-related issues; Ask those questions in one of our forums. How many ohms would I expect. It may be bad and if you do not have the right tools to do this, you will need to go to an Onan-approved mechanic to get it checked. This video shows how the original sensor can just be left in place. Onan generators for RVs have a low oil shutoff that could be causing problems. All this code means is that there is an overheating problem with your generator. This sensor is very difficult to remove and replace due to its location and the fact that it is made with a soft brass housing. Onan itself is known for high quality generators. A new year means new ad, DELIVERY ALERT! Well lets try this again. Onan generators are among the smartest on the market. That is aside from the fact that Onan generators are often built into the RV by the manufacturer. Replaced the control board on the generator which wasn't the problem so i ended up replacing the voltage regulator instead and cleaned the carburetor hoping . Work at Road Amer. You will be able to leave a comment after signing in. two people - 1 to run the drill & 1 to run right angle head through sensor mounting hole. If the connections are good and tight, then check the connections inside the generator, then look at and check the connections at the transfer switch used to switch from shore power to generator power. Copyright 2000-2020 by, ---------- Post added at 12:30 AM ---------- Previous post was at 12:09 AM ----------, ---------- Post added at 12:49 AM ---------- Previous post was at 12:43 AM ----------, ---------- Post added at 01:09 AM ---------- Previous post was at 01:06 AM ----------. Like the parts mentioned above, used Onan RV generators can be found on eBay. Onan provides you with fault codes to help you troubleshoot your system, but some fault codes are easier to understand than others when it comes to fixing the problem or in this case "clearing the code!" Trademark Office. Computer-controlled variable speed operation matches engine speed to load demand, minimizing noise level. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Yes, I want to receive promotional emails from RVshare. Gather your family and. Look for a pig-tale from the generator. Your RV may be low on gas which would interrupt the fuel supply and again, overheat your generator. We flush the cooling system and replace the anti-freeze and radiator pressure cap on our Onan 7.5 kilowatt QuietDiesel generator every two years.
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