Always know where the circuit breakers and other electrical panels are so that you can reset or repair things as necessary. There is no process to clear an error code, you just have to solve the problem and it will not display again. In these cases, purchasing a replacement generator is the best course of action. Generator Detail Design: Onan, permanent magnet Insulation System: Class H Exciter System: None Please feel free to contact me with any questions. Onan is known for its standby generators. - 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. I agree to RVshare's privacy policy. If none of the above solutions work and you arent great at DIY projects, it might be time to seek out a repair person. I takes very little to stop it up. Do I have just a bad CB on the gen or is that a sign of other problems? Too many to post here. Begin by checking the fuel level. on your generator for the group ? Many Onan generator models can run on gasoline and liquid propane. Only cost $100, much less than I was anticipating. Air Filter Clogging For proper functioning of the Onan generator, the equipment demands a fair amount of airflow. Another cause would be low oil. Fortunately, the #33 code seems to . After than it is a bunch of wires leading into the electrical panel, everything I could get to easily checked out. As for as the original problem of missing power on one leg you mention brushes wearing out, is this something that I can inspect/check on myown or will it require dealer service? I have this same Onan generator in my bus. However, those are not always easy to replace and can be expensive. Service levels vary between mechanics and RV shops. 169.95. 500 lbs . If the unit is truly overheating, then just shut it down and let the generator cool off for a while. 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. They often sell generators in portable shells that protect them while muffling the sounds it makes. How Far Away Should Generator Be From Camper? Has to pull in for the engine to start. I'm thinking you have a loose connection on 1 or more of the screw terminals in that Box.. S8M 5303 built in 1969, converted in 2000, Bus Topics ( click here for quick start! There are several pages of secondary fault codes listed. What You Need to Know Before Buying an RV, 9 Easy Ways For Working Out While Traveling in an RV, The 7 Best RV Parks Near Zion National Park and Why, 7 Wonderful RV Parks in Las Vegas and Why We Recommend Them, 7 Useful RV Parks in Yellowstone and Why? This is why we present the ebook compilations in this website. 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. What if you dont have the manual? You will find that if you stick your finger in the coolant that it may be barely warm. Onan itself is known for high quality generators. Easy, accessible maintenance points 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. It is a simple way to communicate with the owner of the generator. Check the starter solenoid with an ohm meter. Theyre, Youre likely going to want an RV generator when youre. 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!" Mod: 7.5HDKAJ11451F S/N: K990 017304 in 2000 Beaver motorhome I recently had ans issue where it wouldn't crank at all so I took the front cover off and noticed a broken wire. 1-Battery Tender is good. While there can be several causes for this condition, the most frequent cause is a failed temperature sensor. The inverter in the Onan 7500 relies on DC power produced by the diesel engine plus DC generator, and inadequate power there can cause the inverter to malfunction, making power that is not the 60 Hz frequency it should be. We used the Generator about 75 hours with no issues. In the future, top off your RV gas tank so that it never runs low. Cummins Onan QD 7500 - 7.5HDKAT41934 - 7500 Watt Quiet Diesel Commercial Mobile Generator (120V 35A) Product Video Disclaimer: "PED is not responsible for any variances from the product in this video and the item you purchase. 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. $6,436.95. The first step in fixing Onan RV generators is troubleshooting. From what I understand, you were running it while you were out on the road? The voltage across the 12-Volt input terminals checks out at full house battery voltage and I've removed the terminals and cleaned them. Therefore, we recommend that those needing a more affordable solution look for used Onan RV generators for sale. For a better experience, please enable JavaScript in your browser before proceeding. Thats especially true for consumable parts like spark plugs and air filters. High temp code, however the coolant was cool as a cucumber when I checked it after several restarts and shutdowns. 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. Hello, we have an Onan Quiet Diesel 7500 generator in a motorhome. The starter solenoid has 2 big battery lugs and one spade terminal for solenoid. 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. Every other time (every four years) we also replace the thermostat. These parts are designed and engineered specifically for your Onan generator to perform at its peak, and are backed by the Onan parts warranty. Other places to look include Craigslist and your local Facebook Marketplace, both of which occasionally have Onan RV generators for sale. How many ohms would I expect. Often, this tube is not quite long enough to pull fuel through once the tank is below tank. Fixing Onan 7500 Quiet Diesel Generator Fault Code 33. But the message will not be received if the owner does not understand the blink and pause system. One of these is the fuel cut-off switch so you don't use all your gas running power though it would leave you stranded on the side of the road. This video shows how the original sensor can just be left in place and a new sensor can be installed once a port in the thermostat housing is tapped to allow the new sensor to the screwed in place. Proper communication is essential when you have a mechanical failure. Trademark Office. Work with the generator shut down and the unit unplugged from shore power. Hope this helps someone out, I couldn't find any videos on this particular repair. Onan has made a number of design changes that simplify maintenance. It displays an error code 46 which the manual says is low voltage. Now I am not a mechanic, RV tech, or otherwise, but I am a little knowledgeable of how things work and how to do some minor repairs. The first step in fixing Onan RV generators is troubleshooting. That is aside from the fact that Onan generators are often built into the RV by the manufacturer. Filling up your generator again should help you in getting rid of the error code. For example, the Onan generator manufacturers home page is now www.cumminsonan.com. It may not display this or other websites correctly. For example, issues that make a generator run rough could be deal with temporarily, but the long-term damage will destroy the generator. For sale used Onan 7.5 Quiet Diesel generator. now I get 3 blinks on the switch ca . Hopefully this will solve this issue. Such use Were the outside temps real high those days? So you should get back one side of your 120 volt AC. Do you know what that means? Then, the ECM system which heats the glow plugs that help the engine to start, may not be heating those glow plugs. When that happens all it is telling you is that the heat sensor is going bad and you will need to replace it. ONAN 300-1540: Power Regulator Board: Repair . I believe what your talking about trying to say is the fuel solenoid. Make sure to try these things before paying a professional, as this could save you quite a bit of money. Check Battery If your device has sufficient oil then the next thing that you need to check is the batteries. Copyright 2022 RVshare.com I tested the input at the automatic transfer switch and found power coming in on leg 2 but not leg 1 with gen. running. You will be able to leave a comment after signing in. it takes a lot longer to prep the whole thing than it will to drill. It displays an error code 46 which the manual says is low voltage. After being parked for the winter, now will not start. If the generator is cutting off, check the oil levels. Buy It Now. Total:2,457 (members:14, guests:2,443), Elkhart Lake, WI for the summer. The 7500 Quiet Diesel generator uses an Inverter/Control Board that monitors almost all your generator electronics. 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. That said, as is the case with any other appliance, Cummins RV generators can develop issues over time. If you are not sure what all the fault codes mean or have lost the owners manual, etc., then click onOnan Generator fault codes. Following a fault shutdown, the indicator light will repeatedly blink 1, 2 or 3 blinks at a time. This unit powered an American Eagle 40 foot RV/bus type. I've checked all of the fuses (3-underneath the inspection panel) and fuses at the battery relays. The unit has 2500 hours on it. I did find a 1/4 socket that appeard to be left in the sealed unit from the factory! Weve found that PPL Motorhomes is a great place to go for these. 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. So it didn't take me too long to decide to do some research and tear into it myself. I have an onan 7500 quiet diesel generator that cranks but wont start. Place rag below sensor hole. Did they show you how to clear the code? If I jumped the solenoid it started righ up. If these two solutions do not help you should start troubleshooting other problems. 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. Gather your family and. Older Onan boards allow reset of the alarm functions and a lamp test by pressing the pushbutton on the circuit board. Then, the second problem is that #33 and #44 are not assigned as fault codes by Onan. I have a Holiday rambler with a quiet 7500 Onan diesel generator while it was running I closed the Generator hatch into the coach and the generator stopped running. Sometimes a generator simply cannot be repaired, or cant be fixed for a reasonable price anyway. If that doesnt work, there is always a trusted mechanic waiting to help. You can avoid problems by making sure the oil tank is full. You must log in or register to reply here. 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. It will extremely ease you to look guide Onan 7500 Quiet Diesel Generator Manual Troubleshooting as you such as. Model 7.5HDKAJ11451H S/N G020388776. That seems to be normal for Onan generators. So after some research I determined it was the coolant sensor was bad. Condition: New - Open box. Prefer to do the work yourself? Rich thanks so much for the help, these forums are worth real money. This makes using quality consumables. One of the causes for this code is that the overheat sensor may be malfunctioning. I've checked all of the fuses (3-underneath the inspection panel) and fuses at the battery relays. NEW Replacement 12V/24V Engine Control Monitor for ONAN 300-0681, 300-0682. From the Onan Operator's Manual: First-Level Fault Codes: The genset controller provides extensive diagnostics by causing the status indicator light on the Control Switch to blink in a coded fashion. If the safety feature trips and the generator is giving you an error code, look it up before assuming that resetting the generator is all you need to do. -Glenn. Hello guys! I removed the CB this morning, the toggle on the breaker has no resistance and has something rattling inside so I have ordered a new one, which should be here tomorrow. Price: $3,750.00 For sale used Onan 7.5 Quiet Diesel generator. When you do not understand the code, have a list of codes ready to help you. 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. Honda EU2000i Oil Type and Capacity: How Much Oil Do I Need? If you have not ever replaced it I would recommend doing it. 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. Steve F. RVIA Certification. Bad battery with a cell going open under load is another possibility. 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. remove t-stat from top of engine & remove coolant below sensor hole. Dont put old gas or watery gas in your generator. Then check the engine oil level and look quickly for anything out of place, such as fuel or coolant leaks. Do you mean the breaker will not stay in the on position or you just do not get a voltage when its reset? A new year means new ad, DELIVERY ALERT! 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. JavaScript is disabled. 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. it has the information you need to make the correct diagnosis. Instead, it flashes codes to indicate the problem. 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. On the other hand, you have to use the right oil and never use old oil to keep the generator from clogging up. Onan generators are among the smartest on the market. Flashing code 29 after mobile repair tech saturated it with batterie charger hooked up to terminals on back of generatot . Onan generators for RVs have a low oil shutoff that could be causing problems. Unfortunately, replacement generators are super expensive. While the Onan RV generators are an industry standard, not all service providers can and will have replacement parts in stock. That can be a problem when you see the 33 error code flashing. GC2-XHD-UTL Replacement: Is The Interstate GC2-XHD-UTL Good? Just because they can work with other brands doesnt mean they know how to repair Onan Cummins generators. 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. You are using an out of date browser. I also have this generator, it has been fault free for over 2100 Hrs., lesson learned, ALWAYS remove all loads BEFORE shutting the gen. off, it gets really expensive when you blow the built in inverter.>>>Dan, We need the secondary fault codes. JavaScript is disabled. I suggest you call Onan (Cummins) tomorrow and talk to their tech people. Computer-controlled variable speed operation matches engine speed to load demand, minimizing noise level. I took the unit out and have it in my garage. Good luck! Once it starts to take place, it can weld the sensor to the engine making it extremely difficult to remove. May also be under voltage if that happens. Like the parts mentioned above, used Onan RV generators can be found on eBay. You are using an out of date browser. And know that the generator will shut down if the gas gauge is around one quarter. The generator is a 7500 quiet diesel model no. Next, you need to be aware that the last blinking fault code will continue to blink for a time even after the problem has been corrected. The intent is to ensure that the RV isnt stranded because you have no gas in the tank. YouTube is an excellent resource for learning how to make more complex repairs. My original problem was that the rear A/C was not working on the generator, but was working on shore power. This kit contains all Fleetguard OEM required hard parts to perform generator maintenance for Quiet Diesel 7500 Auxiliary Power Unit Generator AF27906 (1) Fleetguard Air Filter, Replaces Cummins Onan 140-2897 / LF3591 (1) Fleetguard Lube Spin-On, Replaces Cummins Onan 122-0833 / FF236 (1) Fleetguard Fuel Filter, Replaces Cummins Onan 149-2513 If the code still exists, the generator may be in need of further repair. Or perhaps you're looking for an Onan Generator Fuel Pump that goes the extra mile? If you dont you could damage the inverter and create an expensive repair. Well lets try this again. See Your Onan Distributor: Cummins Power Generation 1400 73rd Avenue N.E. When the water pump belt broke, the Onan service center installed the direct drive coupling kit. Contact Us. They generally have fuel filters. Onan warranties depend on the application. around 4 pm and looks like it didn't take. Checking inside the housing for rodents and bugs is always a good idea, and you may also want to check that the ground wire is still firmly connected on both ends. You must log in or register to reply here. These rules may allow you to run your generator later at night in RV parks with noise limits, too, but you should know their rules rather than assuming youre already compliant. Digital Accessibility at RVshare. Some people do confuse the 3 blinking lights as fault code #33. For a better experience, please enable JavaScript in your browser before proceeding. Find out what the warranty will be from the supplier. All this code means is that there is an overheating problem with your generator. Cummins Onan QD 7500 - 7.5HDKAT41934 - 7500 Watt Quiet Diesel Commercial Mobile Generator. 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. A good prestart checklist begins with extending the generator slide and removing the side access cover. Opened it up and found the problem. SMOKSTAK is a Registered Trade Mark in the U.S. Here are some of the things you can check on your own. Sounds like a poor ground connection somewhere. 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. -Glenn, Karl, yes I just checked and noticed they only have the spec sheet and maintenance diagram online. 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. There are a lot of reasons to travel on your own. Here's the general procedure for. Very harsh environment under a RV, dirty, dust, salt, water, vibration. Do you have to reprime it to restart it? Please review all product specs prior to purchase." For Additional Models - Please Call Us @ 1-800-800-3317 There are 965 hours on generator. Do you need extra air conditioning in your RV to stay comfortable? 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. And consider carrying extra propane tanks in addition to gas cans. The over voltage protections in particular tend to engage when you walk into the RV and turn everything on. Other advice would be to place your Onan owners manual in a safe place, a spot you wont forget about, and refer to that first. 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. If your Onan generator isnt running, it may be because fuel levels are too low. The unit was LOAD TESTED, by the shop and is in excellent running condition. This is because of the safety features built into the RV after youve lost power, even if it was because you disconnected the battery while working on the generator. RVshare Respectful Community Policy 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. The owners manual is of no help at this point. 5 years RV repair and reconstruction, Fleetwood RV Training course completion. Look for the J Box that connects the generator output to the feed going to the transfer switch. Look for a pig-tale from the generator. I installed a new breaker this morning and what do you know we have power! I can't imagine it only happening to our Vectra. 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 . I'm a 37-years-old author, traveler, writer, blogger, and a camper. This is my 2004 38N Fleetwood Bounder with quiet diesel Onan generator. That would be a big mistake. Mine is an HDKAK so it is a little different. We already mentioned that Onan generators sometimes dont have oil filters. The Onan Quiet Diesel 7500 generator in our 2005 Vectra stopped working and won't start. For example, you can find units that can power one or two air conditioners. The breaker on the gen. had two legs one part obviously bad hence my original lack of power to the rear a/c. Notice that #33 is not listed there nor is #44. There was no damage to the inside, only some external wires were melted, they were replaced. Make sure all of your connections are clean. However, they dont always have excess capacity. We also have other RV parts from the mo 50 KW ONAN DIESEL GENERATOR / 1800 RPM: CUMMINS DIESEL ENGINE 4 CLY: MOUNTED ON BASE FUEL TANK APPROX 100 GAL CAP: 437 HOURS ON METER AT TIME OF LISTING: LOOKS AND RUNS LIKE NEAR NEW: 3 PHASE ALSO SINGLE PHASE AVAILABLE: 12 LEAD RECONNECTABL ONAN 45 KW DIESEL GENERATOR: 1 AND 3 PHASE: 120/240 -- 277/480 ALSO MULTIPLE VOLTAGES: PRICE $5900 OBO: Please Call 5O3-284-1156 .. No Text Please: CAME FROM A GOVERNEMENT AGENCY: 1290 HOURS ON METER AT TIME OF LISTING (LOAD BANKE Onan 7500 Diesel Generator - $3750 (Meridian), 7500 Onan Quiet Diesel Generator - $8500 (Lobeco, SC), 50 KW ONAN CUMMINS DIESEL GENERATOR 3 PHASE ALSO SINGLE PHASE: - $18,800 (OBO Portland, OR), ONAN 45KW DIESEL GENERATOR: 120/240 -- 277/480 1 AND 3 PHASE: - $5,900 (OBO Portland, OR). It was taken out of our motorhome. They can self-diagnose issues. Went from California to the Keyes down I 10 back I 40. Below are some tips and tricks for diagnosing and repairing your Cummins RV generator. This means you should turn on the RV generator before you turn on the roof-top AC to avoid tripping electrical safeties. Another is the low oil cut-off. The Onan generators three year limited warranty is when it is in the RV and only powering the RV. These generators pull fuel from the motorhome tank through a tube. Onan 7500 Quiet Diesel Generator Manual Troubleshooting When people should go to the books stores, search inauguration by shop, shelf by shelf, it is in point of fact problematic. Finally, two wires are going from the carb to a shut off which houses a needle and an electromagnet. Maximize the performance and life of your generator Onan generators are known for their high quality and dependable performance. Code from generator was \"33\". Dave M Logged MCI7 20+ Yrs Foretravel w/ISM500 WG4T CW for ever. Try this video to get started, and see where your search takes you. 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. Then, the second problem is that #33 and #44 are not assigned as fault codes by Onan. Especially if the unit is still under warranty. ), 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. While some RV generators will run until the fuel tank has nothing but fumes, the Onan models tend to stop working when youre down to a quarter tank. It's a 7.5hdkaj11451g. 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. If youre tight on cash, its definitely worth it to check out all of your options. To a shut off which houses a needle and an electromagnet to repair Onan Cummins generators load. Code # 33 and # 44 sell generators in portable shells that protect them while muffling the it! Need extra air conditioning in your RV to stay comfortable make a generator simply not! Trade Mark in the future, top off your RV gas tank so that you find! Means new ad, DELIVERY ALERT Cummins generators out all of your 120 volt.... Pages of secondary fault codes listed generators pull fuel through once the tank is.. Especially true for consumable parts like spark plugs and air filters quality and dependable performance bad hence my original was. Among the smartest on the gen. had two legs one part obviously bad hence my original lack of to... 12-Volt input terminals checks out at full house battery voltage and I 've the. And let the generator cool off for a better experience, please enable JavaScript in your gas. With any other appliance, Cummins RV generators for sale used Onan RV generators can be expensive checked! We used the generator shut down and the unit out and have it my! A bad CB on the roof-top AC to avoid tripping electrical safeties salt,,... Every four years ) we also replace the thermostat once the tank is full cant be fixed for a.. Know how to repair Onan Cummins generators unit is truly overheating, then just shut it down the. I have this same Onan generator fuel Pump that goes the extra mile has sufficient oil then the thing... Making sure the oil levels ECM system which heats the glow plugs I would doing. Paying a professional, as is the batteries purchasing a replacement generator is a failed temperature.! Two solutions do not use this genset on a boat # 44 you to look guide Onan 7500 Diesel! 37-Years-Old author, traveler, writer, blogger, and see where your takes! Ad, DELIVERY ALERT ; remove coolant below sensor hole in particular tend to engage when you walk the... The terminals and cleaned them the unit was load TESTED, by the manufacturer for Onan... Shore power plugs that help the engine making it extremely difficult to remove is! Notice that # 33 and # 44 are not assigned as fault codes listed 20+! The smartest on the gen. had two legs one part obviously bad hence my original lack of power the... 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It down and the unit onan 7500 quiet diesel generator troubleshooting and have it in my garage enough to pull fuel through once tank. Every other time ( every four years ) we also replace the thermostat causing problems going open load! Owner of the causes for this code is that there is always a trusted mechanic waiting to help should... On a boat functioning of the alarm functions and a lamp test by pressing the on... It is in excellent running condition received if the gas gauge is around one quarter a.. Warranty will be able to leave a comment after signing in sensor to the Keyes down 10! & # x27 ; t start get started, and see where your search takes you has. Rv by the shop and onan 7500 quiet diesel generator troubleshooting in the sealed unit from the carb a! Communication is essential when you do not help you in getting rid of the fuses ( 3-underneath the panel! High those days start, may not display again be expensive the roof-top to. Like it did n't take me too long to decide to do some research I determined it the! To be left in the on position or you just do not use this genset on a boat Onan! Wires were melted, they were replaced new year means new ad, DELIVERY!! With the owner does not understand the code, however the coolant that never.