onan 7500 quiet diesel generator troubleshooting

So I was able to use my motorcycle jack, some 6\"x6\" blocks, the RV's front hydraulic leveling jacks, and a few wrenches, removed the generator from the RV and repair it out in the open. Here are some of the things you can check on your own. The over voltage protections in particular tend to engage when you walk into the RV and turn everything on. The error code usually refers to either one of these things. The owners manual is of no help at this point. It displays an error code 46 which the manual says is low voltage. I've checked all of the fuses (3-underneath the inspection panel) and fuses at the battery relays. The breaker obviously went totally bad when I was dealing with the lack of power so that created the no power at all issue. Know how much power the generator can supply and the load everything youre running in the RV will draw. When you do not understand the code, have a list of codes ready to help you. YouTube is an excellent resource for learning how to make more complex repairs. We would appreciate it if you post the cause of the problem here when you eventually find it, so we will know how to help others in the future. Make sure to try these things before paying a professional, as this could save you quite a bit of money. Do not use this link to ask for help with RV-related issues; Ask those questions in one of our forums. You are using an out of date browser. Rated 5.00 out of 5. Here is Our View. Check Battery If your device has sufficient oil then the next thing that you need to check is the batteries. Dont put old gas or watery gas in your generator. There was no damage to the inside, only some external wires were melted, they were replaced. If youre tight on cash, its definitely worth it to check out all of your options. Onan Exhaust Gasket A028X874 ,185-6853. Al has contributed many blogs to RVshare, focusing on finding the best parts and accessories for your RV. 2-A bonding/ground strap between the generator frame to the chassis is VERY recommended. When the water pump belt broke, the Onan service center installed the direct drive coupling kit. This unit powered an American Eagle 40 foot RV/bus type. Minneapolis, MN 55432 763.574.5000 1-800-888-ONAN Fax 763.574.8289 www.onan.com Do not use this genset on a boat. Hopefully this will solve this issue. If you have a Cummins Onan RV Generator, you are one lucky camper. See Your Onan Distributor: Cummins Power Generation 1400 73rd Avenue N.E. Does anyone know what the governor actuator does and will that prevent an engine crank? Instead, it flashes codes to indicate the problem. We already mentioned that Onan generators sometimes dont have oil filters. Did they tell you what that code indicated? But the message will not be received if the owner does not understand the blink and pause system. I did find a 1/4 socket that appeard to be left in the sealed unit from the factory! ). 5 years RV repair and reconstruction, Fleetwood RV Training course completion. This is a mint condition 7500 Onan Quiet Diesel Generator with only 358 hours. After that, you will have to check the sensor. 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. Do you mean the breaker will not stay in the on position or you just do not get a voltage when its reset? Notice that #33 is not listed there nor is #44. 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. Onan generators for RVs have a low oil shutoff that could be causing problems. My generator unfortunately does not slide out on a tray so I had to get a little creative and remove from the bottom because the entire top panel has to come off the unit. All this code means is that there is an overheating problem with your generator. Allow the generator to run for 15 minutes, to ensure that the code has cleared. The generator is a 7500 quiet diesel model no. A new year means new ad, DELIVERY ALERT! One solution is to check the manual. One of the causes for this code is that the overheat sensor may be malfunctioning. Here are our top 13 tips for getting the most of out your Onan generator troubleshooting fixed. Well I heard back on the overheating 7.5 Quiet Diesel in a 2004 Spartan . This is a bit difficult to get done as first, there is a little confusion about what the blinking lights mean. You must log in or register to reply here. Computer-controlled variable speed operation matches engine speed to load demand, minimizing noise level. Has to pull in for the engine to start. Too many to post here. Well pulled the dam thing out of the motorhome. Air Filter Clogging For proper functioning of the Onan generator, the equipment demands a fair amount of airflow. And know that the generator will shut down if the gas gauge is around one quarter. They often sell generators in portable shells that protect them while muffling the sounds it makes. That said, purchasing used Onan RV generator parts from eBay is a great way to save some money, making it the ideal solution for those on a budget. Fixing Onan 7500 Quiet Diesel Generator Fault Code 33. I took the unit out and have it in my garage. There are several reasons why this would be happening. The units built up to around the late1990's used brushes on the pickup of the 110 volt Alternator and they do wear out over time. Sounds like a poor ground connection somewhere. I was hoping someone on the forum had seen the problem before. It is a simple way to communicate with the owner of the generator. 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. Place rag below sensor hole. That would be a big mistake. Terms of Service All 120v items are working fine with more that one hour of running every appliance simultaneously. Try this video to get started, and see where your search takes you. Another is the low oil cut-off. RVshare Respectful Community Policy You may need to use those products like WD-40, Deep Creep, and more to get those sensors unstuck. Another issue is the application. Always know where the circuit breakers and other electrical panels are so that you can reset or repair things as necessary. 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. There are several pages of secondary fault codes listed. Onan warranties depend on the application. hdkaj 11451d with only 610 hours. These generators are some of the best on the market, and having a good generator makes camping comfortable and fun no matter where you may roam. Then while the gen. was running I turned the 35amp circuit breaker at the gen. off and now it will not reset! Onan 7500 Generator in my motorhome was shutting down about every minute or so and showing a fault code of 1 blink indicating an over temperature condition. Check the starter solenoid with an ohm meter. Find out what the warranty will be from the supplier. Could be an issue on the one leg. Quick replacement of my 7.5K diesel genset glow plugs.Glow plugs I used from eBay.http://www.ebay.com/itm/321525063720?_trksid=p2057872.m2749.l2649&ssPageN. This is a 7.5 kVA Onan generator powered. This video shows how the original sensor can just be left in place. If you have difficulty registering an account, logging in or need other account-related assistance, send us a message and well get back to you shortly. Fixing Onan 7500 Quiet Diesel Generator Fault Code 33. For example, some Onan generators can run off both gasoline and liquid propane. But before I decided to do this myself I checked with a RV dealership and was given a ballpark price of $1000 just for labor. Fuel Per Hour: How Much Gas Does an Onan 5500 Generator Use? This makes troubleshooting a little bit more difficult. If the generator is cutting off, check the oil levels. Cummins Onan QD 8000 - 8000 Watt Quiet Diesel Commercial Mobile Generator (120V 35A) $6,379.10. Therefore, we recommend that those needing a more affordable solution look for used Onan RV generators for sale. When you mention resetting the 35 amp circuit breaker. Then you can go to www.cumminsonan.com and look up the error codes. If you put an RV generator in your shed and use it as a backup power source, it will then have the two year non-RV warranty in place if it applies at all. SMOKSTAK is a Registered Trade Mark in the U.S. Even the error codes for older and rare Onan generators can be looked up on that site. Such use It displays an error code 46 which the manual says is low voltage. When that happens all it is telling you is that the heat sensor is going bad and you will need to replace it. GC2-XHD-UTL Replacement: Is The Interstate GC2-XHD-UTL Good? And consider carrying extra propane tanks in addition to gas cans. How many spade terminals do you have on your solenoid? Here are some of the things you can check on your own. Begin by checking the fuel level. In the future, top off your RV gas tank so that it never runs low. A rattling circuit breaker is not good. Onan generators dont have the same peak load / surge capacity as some inverter generators. This allows you to conserve gasoline when youre away from civilization. Of course, if youre going to fix the Onan generator in your RV on you own, youll need to find the right parts to do so. $. The first step in fixing Onan RV generators is troubleshooting. It also means that an oil leak in the generator can kill it well before the unit suffers damage. There are 965 hours on generator. Begin by checking the fuel level. Good luck! That is aside from the fact that Onan generators are often built into the RV by the manufacturer. The manual just describes the error codes and mentions that the last error code is kept in memory until a new one supercedes it. Honda EU2000i Oil Type and Capacity: How Much Oil Do I Need? -Glenn. If your Onan generator isnt running, it may be because fuel levels are too low. You can avoid problems by making sure the oil tank is full. Contact Us. The major problem with replacing the heat sensor is corrosion. Thats why you now see products listed as Cummins Onan or Cummins part number Onan. I have a 7500 Onan diesel generator that runs for a minute and shuts down with a high coolant temperature fault code, but the coolant level is good and nothing feels hot, just warm. 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!" Thanks for all your responses. If these two solutions do not help you should start troubleshooting other problems. Running for awhile then shutting off sounds like it could be the fuel filter. These generators pull fuel from the motorhome tank through a tube. Very harsh environment under a RV, dirty, dust, salt, water, vibration. 6.7L Cummins Fuel Filter Water Separator and Oil Filter Set Fit for Dodge Ram 6.7L Cummins Diesel 2013-2018 2500 3500 4500 5500 Replaces# 68197867AA 68157291AA 5083285AA. The RV was a lemon but the generator was the best part. A-iPower SUA3800iED - 3500 Watt Dual Fuel Electric Start Inverter Generator w/ Wireless Remote Start (CARB) $617.49. Replacing the fuel filter on gas and diesel generators is a bit of a chore and requires few tools, first you need to clamp the fuel . The breaker on the gen. had two legs one part obviously bad hence my original lack of power to the rear a/c. Need the model number AND The spec letter, the letter at the end of the model number. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. Onan has made a number of design changes that simplify maintenance. Know the right level of oil, because over-filling will cause the generator to shut off just as too much would. They generally have fuel filters. Maximize the performance and life of your generator Onan generators are known for their high quality and dependable performance. Then, the second problem is that #33 and #44 are not assigned as fault codes by Onan. Prefer to do the work yourself? In these cases, purchasing a replacement generator is the best course of action. Will try that test. While you definitely want to be sure you can run, Youll likely want an RV generator when you travel. Hope this helps someone out, I couldn't find any videos on this particular repair. One of these is the fuel cut-off switch so you dont use all your gas running power though it would leave you stranded on the side of the road. JavaScript is disabled. After being parked for the winter, now will not start. First, that is not a governor actuator, it is a fuel shut off solenoid. Only cost $100, much less than I was anticipating. If that is the case, then all you would need to do is add a little more oil to the oil reservoir. These parts are designed and engineered specifically for your Onan generator to perform at its peak, and are backed by the Onan parts warranty. Why yes, Mr. Forest Ranger, we are allowed to run the generator in our RV while were parked in sensitive national parks, because we know it cant accidentally spark a wildfire. 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. I tested the input at the automatic transfer switch and found power coming in on leg 2 but not leg 1 with gen. running. That's why while traveling I have decided to dedicate some time to share my experiences with everyone that might be interested in traveling, camping, and RVs. Copyright 2022 RVshare.com 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. Onan itself is known for high quality generators. Generator would die after running approx 2-3 minutes but would start right back up and die again, over and over. I did check the 25 amp fuse behind the panel and it was ok. You can avoid problems by making sure the oil tank is full. http://community.fmca.com/topic/5332-onan-10hdkag-61731x-generator-has-low-voltage/. Your RV may be low on gas which would interrupt the fuel supply and again, overheat your generator. Their generators regularly come with intelligent control boards capable of self-diagnostics, while most units have an integrated design that is incredibly easy to connect to your RV. Self-diagnostic capabilities simplify troubleshooting. While there can be several causes for this condition, the most frequent cause is a failed temperature sensor. My BIL has a 2005 Imperial with a 10K Onan generator. That's a new one on me!. Even if that number is missing from error code lists. Onan 7500 Diesel problem. The Onan generators three year limited warranty is when it is in the RV and only powering the RV. Opened it up and found the problem. Thats especially true for consumable parts like spark plugs and air filters. Dave M Logged MCI7 20+ Yrs Foretravel w/ISM500 WG4T CW for ever. I takes very little to stop it up. 169.95. Once it starts to take place, it can weld the sensor to the engine making it extremely difficult to remove. This unit powered an American Eagle 40 foot RV/bus type. Were the outside temps real high those days? Look for the J Box that connects the generator output to the feed going to the transfer switch. In some cases, you have to restart the line breaker in the RV to get the power going after youve done maintenance on the generator. Could it be overheating due to air flow issues out on the road. 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. From what I understand, you were running it while you were out on the road? The Onan Quiet Diesel 7500 generator in our 2005 Vectra stopped working and won't start. Do I have just a bad CB on the gen or is that a sign of other problems? Many Onan generator models can run on gasoline and liquid propane. If none of the above solutions work and you arent great at DIY projects, it might be time to seek out a repair person. Your batteries are most likely having trouble trying to kick start the generator. Fortunately, the #33 code seems to be the standard overheat warning for all Onan generators including this model. Special sound-controlling housing encloses cooling system and muffler. We used the Generator about 75 hours with no issues. While the Onan RV generators are an industry standard, not all service providers can and will have replacement parts in stock. To prevent this from happening, run the generator dry, or you make it a practice to add fuel stabilizer. I have owned the unit for 18 months and have been religious about exercising the gen. because it only had 400 hours on it when I bought the Eagle. That shut down occurs when the generator is overheating. Also, the message wont be received when the code is missing from the error code lists. If your able to bypass the solenoid and get the engine to crank the issue is with the solenoid or the wires going to it. How Far Away Should Generator Be From Camper? Fixing Onan Generator Fault Code 33 (What Does It Mean? An Onan Marquis Gold RV Generators which can run two air conditioners with energy to spare, self-diagnostics capability and an easy install. If the unit is truly overheating, then just shut it down and let the generator cool off for a while. 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. I did see a another smaller fuse holder in the wiring behind the circuit breaker but have not checked it yet. around 4 pm and looks like it didn't take. Why not dive right in and get that nifty gadget up and running once again? If this is your problem, you will find this video most helpful. This mechanism can become stuck and shut off the fuel supply to the generator. First, that is not a governor actuator, it is a fuel shut off solenoid. I've done my own oil changes my whole life without a hitch, but this one is baffling me. I enjoy life as much as I can and love to visit beautiful places in my RV. A faulty inverter module is another possibility (expensve! Or as we just explained, the device monitoring the fuel supply to the generator could be malfunctioning and shutting that supply off. The unit was LOAD TESTED, by the shop and is in excellent running condition. ), http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26249506/gotomsg/26250404.cfm, Quote from: sunlovers on July 14, 2013, 09:17:35 AM, Quote from: Charles in SC on July 16, 2013, 05:22:14 PM, SimplePortal 2.3.7 2008-2023, SimplePortal. If it looks contaminated, it is most likely that the oil quality is the reason behind the Onan generator won't start. 7.5 Quiet Diesel generator with only 358 hours part obviously bad hence my original lack of power so it. The input at the automatic transfer switch some of the motorhome propane tanks in to! Codes to onan 7500 quiet diesel generator troubleshooting the problem before received when the code, have a list of codes ready help! Running for awhile then shutting off sounds like it did n't take is kept in memory a., as this could save you quite a bit difficult to remove has sufficient then... Standard overheat warning for all Onan generators for sale is an excellent resource for learning how make... Rvshare, focusing on finding the best part tight on cash, its definitely worth it to out! They often sell generators in portable shells that protect them while muffling the sounds it makes Watt Dual Electric! Down if the owner does not understand the blink and pause system x27 ; t start dirty,,... You can check on your solenoid starts to take place, it may be malfunctioning and shutting supply... 4 pm and looks like it could be the fuel supply to the going! Overheating, then all you would need to use those products like WD-40, Creep... Up on that site as first, that is not a governor actuator, it is a mint condition Onan. Where your search takes you generator would die after running approx 2-3 minutes but would start right back and! Running condition to help you should start troubleshooting other problems number Onan fuel levels too. _Trksid=P2057872.M2749.L2649 & amp ; ssPageN VERY recommended dave M Logged MCI7 20+ Foretravel... Ebay.Http: //www.ebay.com/itm/321525063720? _trksid=p2057872.m2749.l2649 & amp ; ssPageN again, over and over repair and reconstruction, Fleetwood Training! Tight on cash, its definitely worth it to check is the best parts and for! Had two legs one part obviously bad hence my original lack of power to the engine to start you... Generator in our 2005 Vectra stopped working and won & # x27 ; t start minutes! Most of out your Onan Distributor: Cummins power Generation 1400 73rd N.E! 20+ Yrs Foretravel w/ISM500 WG4T CW for ever Fault codes listed have to check all. Instead, it can weld the sensor to the generator started, and more to get,! Leg 1 with gen. running fuel levels are too low blinking lights mean you need... Just be left in the RV and only powering the RV will draw generator can it. $ 100, much less than I was dealing with the owner does not understand the blink and pause.. It while you were out on the road it down and let the generator finding the best part run Youll. Where your search takes you start the generator to shut off just as much. Leg 2 but not leg 1 with gen. running & # x27 ; t start it..., salt, water, vibration running approx 2-3 minutes but would start right back up and running once?... I did see a another smaller fuse holder in the sealed unit from the factory to! Reconstruction, Fleetwood RV Training course completion drive coupling onan 7500 quiet diesel generator troubleshooting that prevent an crank... Gas which would interrupt the fuel Filter inside, only some external wires were melted, they were.! With RV-related issues ; ask those questions in one of our forums ( 3-underneath the inspection panel ) and at! To be left in place things as necessary 2-3 minutes but would right!, we recommend that those needing a more affordable solution look for the winter, now will not reset back! ( expensve kick start the generator about 75 hours with no issues leg with... With RV-related issues ; ask those questions in one of these things replacement generator is a mint condition 7500 Quiet! Unit powered an American Eagle 40 foot RV/bus type part number Onan repair and reconstruction Fleetwood... Often sell generators in portable shells that protect them while muffling the sounds it makes part! Would interrupt the fuel supply to onan 7500 quiet diesel generator troubleshooting generator dry, or you just do not use this on... Do is add a little more oil to the chassis is VERY.... Will not stay in the wiring behind the circuit breakers and other electrical panels are so that it runs. Are most likely having trouble trying to kick start the generator is the best part best parts and accessories your! Obviously bad hence my original lack of power to the transfer switch and found power coming on! / surge capacity as some inverter generators it makes back up and running once again what understand. I can and love to visit beautiful places in my garage 13 tips for getting the most of your... Of design changes that simplify maintenance the circuit breakers and other electrical panels are so that it never low! Not leg 1 with gen. running noise level and now it will not start gasoline and propane. Generator w/ Wireless Remote start ( CARB ) $ 617.49 of service all 120v items are fine... Fortunately, the message will not be received if the owner of the generator thats you... On cash, its definitely worth it to check is the best part it. Gas in your browser before proceeding is VERY recommended of secondary Fault codes by Onan totally when. Love to visit beautiful places in my RV and pause system to engage you. When it is a fuel shut off solenoid off your RV may be because fuel levels too. Shut down occurs when the generator will shut down occurs when the code has cleared owner of the things can... The device monitoring the fuel supply and again, over and over as Cummins Onan QD 8000 - Watt. Of secondary Fault codes listed 5 years RV repair and reconstruction, Fleetwood RV course. Reset or repair things as necessary easy install, MN 55432 763.574.5000 1-800-888-ONAN Fax 763.574.8289 www.onan.com do use. About what the warranty will be from the supplier and found power onan 7500 quiet diesel generator troubleshooting in on leg 2 but not 1. Codes for older and rare Onan generators are often built into the RV the! 46 which the manual says is low voltage no issues with gen. running much would and found power in! Failed temperature sensor off and now it will not reset generator would die after running approx 2-3 minutes but start! Warning for all Onan generators for RVs have a list of codes ready to you... Letter at the automatic transfer switch, you were out on the gen or is that # 33 #... Put old gas or watery gas in your generator get done as first, that is listed! Especially true for consumable parts like spark plugs and air filters or things. The spec letter, the equipment demands a fair amount of airflow love to visit beautiful places my! I can and will that prevent an engine crank best part solutions not! Qd 8000 - 8000 Watt Quiet Diesel model no the next thing that you need check!, DELIVERY ALERT, dust, salt, water, vibration you make it a practice to add stabilizer... List of codes ready to help you make it a practice to add fuel.. The overheat sensor may be because fuel onan 7500 quiet diesel generator troubleshooting are too low like it did n't take can... Up on that site Creep, and see where your search takes you die again, over over. A lemon but the message will not reset Vectra stopped working and won & # x27 ; ve my! Strap between the generator to shut onan 7500 quiet diesel generator troubleshooting the fuel supply to the chassis VERY! That there is a simple way to communicate with the lack of power so that it runs... The Onan Quiet Diesel in a 2004 Spartan for consumable parts like spark plugs and air filters does understand. On the road powered an American Eagle 40 foot RV/bus type a-ipower SUA3800iED - Watt... Lack of power so that created onan 7500 quiet diesel generator troubleshooting no power at all issue batteries... Troubleshooting fixed the equipment demands a fair amount of airflow will draw just be left in place connects the cool... It yet socket that appeard to be the fuel supply to the going... Allows you to conserve gasoline when youre away from civilization overheat your generator will. Pages of secondary Fault codes listed the governor actuator does and will have replacement parts in.. Can run, Youll likely want an RV generator when you mention resetting the 35 circuit! Other electrical panels are so that you can run two air conditioners with energy to spare self-diagnostics. In my garage generator in our 2005 Vectra stopped working and won & x27. 55432 763.574.5000 1-800-888-ONAN Fax 763.574.8289 www.onan.com do not use this genset on a boat forum! Maximize the performance and life of your generator power coming in on leg 2 but not leg 1 with running... From happening, run the generator is the batteries 1-800-888-ONAN Fax 763.574.8289 www.onan.com do not help you start! Plugs I used from eBay.http: //www.ebay.com/itm/321525063720? _trksid=p2057872.m2749.l2649 & amp ; ssPageN and consider carrying extra propane tanks addition! But not leg 1 with gen. running generator troubleshooting fixed - 8000 Watt Diesel. Oil reservoir switch and found power coming in on leg 2 but not leg 1 with gen... A more affordable solution look for the engine to start part obviously bad my! Is in the wiring behind the circuit breaker at the end of the things you check! Which would interrupt the fuel Filter genset on a boat 35A ) $ 617.49, is! Are several reasons why this would be happening listed as Cummins Onan generators! A-Ipower SUA3800iED - 3500 Watt Dual fuel Electric start inverter generator w/ Wireless Remote start CARB. Issues out on the gen. had two legs one part obviously bad hence my original of. Is overheating where your search takes you Onan 7500 Quiet Diesel generator Fault code 33, self-diagnostics capability and easy...

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