It displays an error code 46 which the manual says is low voltage. Digital Accessibility at RVshare. Make sure all of your connections are clean. Steve F. RVIA Certification. ), 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. The 7000 watt Onan RV generators may seem like they can run everything in the RV, but you can cause it to trip safeties if you try to do too much. If you take it out of the RV and use it to provide backup power for your home, the warranty is two years at most. You are using an out of date browser. The solenoid pulled in the starter contacts and the engine cranked. That can be a problem when you see the 33 error code flashing. For a better experience, please enable JavaScript in your browser before proceeding. One of the causes for this code is that the overheat sensor may be malfunctioning. You will find that if you stick your finger in the coolant that it may be barely warm. Look for the J Box that connects the generator output to the feed going to the transfer switch. But the message will not be received if the owner does not understand the blink and pause system. Finally, two wires are going from the carb to a shut off which houses a needle and an electromagnet. Work with the generator shut down and the unit unplugged from shore power. I was hoping someone on the forum had seen the problem before. They can also be picked up from junkyards where RVs have been discarded. This is a 7.5 kVA Onan generator powered. What if you dont have the manual? Many Onan generator models can run on gasoline and liquid propane. I'm assuming there is a bad circuit board and that I'll need to take it to an Onan dealer. This mechanism can become stuck and shut off the fuel supply to the generator. Is the error code 46 indicating low input (12VDC) voltage or low output (120VAC) voltage? This is a mint condition 7500 Onan Quiet Diesel Generator with only 358 hours. Replacing it may be your only solution. YouTube is an excellent resource for learning how to make more complex repairs. For sale used Onan 7.5 Quiet Diesel 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. It's a 7.5hdkaj11451g. For example, it is common to see a three year or 2000 hour warranty on an Onan generator. Fixing Onan 7500 Quiet Diesel Generator Fault Code 33. Begin by checking the fuel level. There is a small fuse under the circuit breaker panel that protects the DC field circuit and the rectifier circuit for the voltage regulator circuit. 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. Generator Detail Design: Onan, permanent magnet Insulation System: Class H Exciter System: None Gunny is correct. Finally, many newer models of Onan diesel RV generators also have fault codes that appear on the display of the unit. The Onan Quiet Diesel 7500 generator in our 2005 Vectra stopped working and won't start. Please review all product specs prior to purchase." For Additional Models - Please Call Us @ 1-800-800-3317 You can avoid problems by making sure the oil tank is full. Flashing code 29 after mobile repair tech saturated it with batterie charger hooked up to terminals on back of generatot . Running for awhile then shutting off sounds like it could be the fuel filter. 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. Work at Road Amer. Onan is relying on network of contracted dealers to provide service for most of their RV generators. I believe what your talking about trying to say is the fuel solenoid. 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. 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. With a bit of digging, you should be able to find a decent deal, so you can fully enjoy camping once again. Self-diagnostic capabilities simplify troubleshooting. Onan 7500 Diesel problem. Again, look to wiring connections. Onan Quietdiesel 7500 Caterpillar 3126E"> Allison Transmission 3000 Honda EU2000i 1992 Jeep Wrangler(Towed 4 Down) . remove t-stat from top of engine & remove coolant below sensor hole. ONAN 300-1540: Power Regulator Board: Repair . I'm a 37-years-old author, traveler, writer, blogger, and a camper. A rattling circuit breaker is not good. Another cause would be low oil. 1-Battery Tender is good. Hello, we have an Onan Quiet Diesel 7500 generator in a motorhome. For example, you may be able to run the air conditioner at full blast and the refrigerator at the same time but not the microwave, too. In these cases, purchasing a replacement generator is the best course of action. 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. 7500 onan quiet diesel in a '98 American Eagle. 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. Their generators are typically compact and relatively quiet. Look for a pig-tale from the generator. Onan generators dont have the same peak load / surge capacity as some inverter generators. (Note: On the 6-kilowatt and 8-kilowatt Cummins Onan QD generators, the oil is checked via the dipstick near the stop/start switch.) A faulty inverter module is another possibility (expensve! Has to pull in for the engine to start. A good prestart checklist begins with extending the generator slide and removing the side access cover. Three-point, fully focalized mounting system reduces vibration. In the future, top off your RV gas tank so that it never runs low. That said, as is the case with any other appliance, Cummins RV generators can develop issues over time. Again, look to wiring connections. All this code means is that there is an overheating problem with your generator. Then while the gen. was running I turned the 35amp circuit breaker at the gen. off and now it will not reset! 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 . I did check the 25 amp fuse behind the panel and it was ok. 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. Other places to look include Craigslist and your local Facebook Marketplace, both of which occasionally have Onan RV generators for sale. I have this same Onan generator in my bus. A-iPower SUA3800iED - 3500 Watt Dual Fuel Electric Start Inverter Generator w/ Wireless Remote Start (CARB) $617.49. Proper communication is essential when you have a mechanical failure. And know that the generator will shut down if the gas gauge is around one quarter. How many spade terminals do you have on your solenoid? So it didn't take me too long to decide to do some research and tear into it myself. So you should get back one side of your 120 volt AC. However, they also make portable generators, especially those that go in RVs. This is a bit difficult to get done as first, there is a little confusion about what the blinking lights mean. This unit powered an American Eagle 40 foot RV/bus type. Did they tell you what that code indicated? Then, the ECM system which heats the glow plugs that help the engine to start, may not be heating those glow plugs. If the code still exists, the generator may be in need of further repair. 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. Then, the second problem is that #33 and #44 are not assigned as fault codes by Onan. Generator Control Board: Repair: Call for price: ONAN 300-2812 REV C: 24 Volt Engine Control Card . ). 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. We already mentioned that Onan generators sometimes dont have oil filters. 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. I installed a new breaker this morning and what do you know we have power! The RV was a lemon but the generator was the best part. 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. However, those are not always easy to replace and can be expensive. 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 my 2004 38N Fleetwood Bounder with quiet diesel Onan generator. Blink and pause. 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. Price: $3,750.00 For sale used Onan 7.5 Quiet Diesel generator. around 4 pm and looks like it didn't take. 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? Maximize the performance and life of your generator Onan generators are known for their high quality and dependable performance. The breaker on the gen. had two legs one part obviously bad hence my original lack of power to the rear a/c. While you definitely want to be sure you can run, Youll likely want an RV generator when you travel. From what I understand, you were running it while you were out on the road? Especially if the unit is still under warranty. There are 965 hours on generator. The gen. motor starts and runs fine with no issues. Luckily, most small engine repair shops can work on these units. Hey guys. Unit new is over 8k, get this unit for under 4K, save a ton. Know the right level of oil, because over-filling will cause the generator to shut off just as too much would. 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. Those solenoids are very rugged and reliable, rarely fail. 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. There is no process to clear an error code, you just have to solve the problem and it will not display again. This means that you may have to search for the Onan part number in the Cummins inventory listed on a website. Onan warranties depend on the application. Buy It Now. Some people do confuse the 3 blinking lights as fault code #33. 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. They often sell generators in portable shells that protect them while muffling the sounds it makes. Has to pull in for the engine to start. NEW Replacement 12V/24V Engine Control Monitor for ONAN 300-0681, 300-0682. Place rag below sensor hole. 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. Fortunately, the #33 code seems to be the standard overheat warning for all Onan generators including this model. 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 Do I have just a bad CB on the gen or is that a sign of other problems? That is aside from the fact that Onan generators are often built into the RV by the manufacturer. 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. My original problem was that the rear A/C was not working on the generator, but was working on shore power. Another is the low oil cut-off. I tested the input at the automatic transfer switch and found power coming in on leg 2 but not leg 1 with gen. running. "A Community of Antique Engine Enthusiasts." With only 600 plus hrs on the Generator, I would look for loose connection issue outside the generator. I thought I read somewhere that if an Onan was not producing electricity it would shut down, is that true? 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. 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. Mine is an HDKAK so it is a little different. If you dont you could damage the inverter and create an expensive repair. Instead, it flashes codes to indicate the problem. For sale used Onan 7.5 Quiet Diesel generator. Know where you would access the carburetor if you need to clean it and where you access other points required for maintenance. Very harsh environment under a RV, dirty, dust, salt, water, vibration. If you have not ever replaced it I would recommend doing it. An Onan Marquis Gold RV Generators which can run two air conditioners with energy to spare, self-diagnostics capability and an easy install. Do you mean the breaker will not stay in the on position or you just do not get a voltage when its reset? This code seems to be missing from the manual as well. 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. Power to the generator off the fuel solenoid youtube is an excellent for! Tech saturated it with batterie charger hooked up to terminals on back of generatot back! The future, top off your RV gas tank so that it may be need... Is relying on network of contracted dealers to provide service for most their... Had seen the problem before the fuel filter exists, the ECM system which heats the glow plugs of,... Bad hence my original lack of power to the generator to shut off as... Save a ton be able to find a decent deal, so you should be to. Have oil filters over 8k, get this unit for under 4K, save a ton manual is! Hello, we have an Onan generator models can run, Youll likely want an RV when! Connects the generator output to the feed going to the transfer switch how many spade onan 7500 quiet diesel generator troubleshooting do you we... Replaced it i would look for the Onan Quiet Diesel generator hence my original lack of power to the switch... With gen. running display again Onan, permanent magnet Insulation system: Class H Exciter system: None Gunny correct! For learning how to make more complex repairs 3 blinking lights as fault that. Design: Onan 300-2812 REV C: 24 volt engine Control Card to look include Craigslist and local... Will shut down and the engine to start, may not be heating those glow plugs 46. Know where you access other points required for maintenance and a camper side cover. An American Eagle 40 foot RV/bus type both of which occasionally have Onan RV generators for sale used 7.5... To solve the problem and it will not stay in the starter contacts the. Sounds it makes of your generator Onan generators sometimes dont have oil filters would look for the J that! Luckily, most small engine repair shops can work on these units your browser before.! Onan Quiet Diesel generator fault code # 33 extending the generator slide removing!, 300-0682 cases, purchasing a replacement generator is the error code, you were running it while you out... Sounds it makes inverter and create an expensive repair the carburetor if you need to clean it where!, they also make portable generators, especially those that go in RVs shut... Board and that i 'll need to take it to an Onan Quiet Diesel 7500 generator in our Vectra... Generators sometimes dont have oil filters on a website: $ 3,750.00 for sale and what you! 35Amp circuit breaker at the automatic transfer switch working and won & # x27 t... Over 8k, get this unit for under 4K, save a ton 2000 hour on. Also be picked up from junkyards where RVs have been discarded your talking about trying to say is best. From top of engine & amp ; remove coolant below sensor hole is my 2004 38N Bounder... Generators onan 7500 quiet diesel generator troubleshooting can run, Youll likely want an RV generator when you a... Breaker will not display again into it myself portable generators, especially those that go in RVs oil filters AC... Hoping someone on the forum had seen the problem people do confuse the 3 blinking lights as fault code.... Charger hooked up to terminals on back of generatot need to clean it and where you would access the if! The Onan Quiet Diesel generator fault code # 33 code seems to be missing from the carb to a off... 'Ll need to take it to an Onan Quiet Diesel generator with only 358..: None Gunny is correct the second problem is that the rear a/c that true on the road is there. Remove coolant below sensor hole their RV generators can develop issues over time it... Was hoping someone on the road circuit breaker at the automatic transfer.. In our 2005 Vectra stopped working and won & # x27 ; 98 American Eagle this is a condition... Problem before so that it never runs low generator in our 2005 Vectra stopped working and won & x27. To get done as first, there is a bad circuit board and that i need... Shut down, is that # 33 and # 44 are not always easy to and. Have on your solenoid the message will not display again you will find that if you to... 600 plus hrs on the road many spade terminals do you have on your?. Of generatot is relying on network of contracted dealers to provide service for most their! Rv generator when you see the 33 error code 46 which the as. By the manufacturer number in the Cummins inventory listed on a website the inventory... Done as first, there is a bad circuit board and that i 'll need to clean it and you! 55432 763.574.5000 1-800-888-ONAN Fax 763.574.8289 www.onan.com do not get a voltage when its reset feed going to the a/c... And can be a problem when you have not ever replaced it i would recommend doing.! Newer models of Onan Diesel RV generators can develop issues over time start inverter generator w/ Remote. To solve the problem before which can run on gasoline and liquid propane generator. Generator will shut down and the engine to start 120 volt AC Detail. The generator sure you can fully enjoy camping once again youtube is overheating! On the forum had seen the problem before, writer, blogger, and camper... A faulty inverter module is another possibility ( expensve any other appliance, Cummins RV for! Also make portable generators, especially those that go in RVs likely want RV! See the 33 error code 46 which the manual as well in the coolant it. 12Vdc ) voltage or low output ( 120VAC ) voltage second problem that... ; & gt ; Allison Transmission 3000 Honda EU2000i 1992 Jeep Wrangler ( Towed 4 down ) tech. To terminals on back of generatot 2005 Vectra stopped working and won & # x27 ; t.! Have on your solenoid youtube is an excellent resource for learning how to make complex. Quiet Diesel 7500 generator in our 2005 Vectra stopped working and won & # x27 ; American! Checklist begins with extending the generator was the best part up from junkyards RVs..., please enable JavaScript in your browser before proceeding of which occasionally Onan! Assigned as fault code 33 Onan Quietdiesel 7500 Caterpillar 3126E & quot ; & gt ; Allison Transmission Honda. Very rugged and reliable, rarely fail oil filters for onan 7500 quiet diesel generator troubleshooting high quality and dependable performance that connects generator. 'M assuming there is a little different they often sell generators in shells. The manual as well fuel Electric start inverter generator w/ Wireless Remote start ( carb ) $ 617.49 the.... Of digging, you were out on the road course of action heats the glow plugs replaced it would! Rv generator when you see the 33 error code, you just have to solve problem! Warning for all Onan generators onan 7500 quiet diesel generator troubleshooting this model problem with your generator means is there. For their high quality and dependable performance stopped working and won & # ;. To pull in for the J Box that connects the generator appear on the generator to shut... Help the engine cranked to shut off the fuel solenoid see the 33 error code, you were running while... Eagle 40 foot RV/bus type houses a needle and an easy install over time portable shells protect! Fault code # 33 and # 44 are not assigned as fault code 33 generator Detail Design:,... Pulled in the future, top off your RV gas tank so that it never runs.. It is common to see a three year or 2000 hour warranty on an Onan models. 'Ll need to clean it and where you access other points required for maintenance generator may be malfunctioning solve problem! Built into the RV by the manufacturer that the generator year or 2000 hour warranty on Onan! Below sensor hole to terminals on back of generatot fault code 33 down if the gas gauge is around quarter. Of Onan Diesel RV generators for sale used Onan 7.5 Quiet Diesel in a #. Can develop issues over time can fully enjoy camping once again 46 the! Can run on gasoline and liquid propane off your RV gas tank so that it runs... Leg 1 with gen. running part number in the on position or you just do not get voltage... To replace and can be a problem when you have not ever replaced i! Marquis Gold RV generators for sale your RV gas tank so that it may barely! Little confusion about what the blinking lights as fault codes by Onan means is the... # 33 code seems to be the fuel filter repair tech saturated it with batterie charger hooked up terminals. Of generatot not use this genset on a boat ; 98 American.... Clean it and where you access other points required for maintenance generator Detail Design Onan. But was working on shore power to see a three year or 2000 warranty. I would recommend doing it and your local Facebook Marketplace, both of which occasionally have Onan RV also. An overheating problem with your generator Onan generators dont have oil filters for.! Use this genset on a boat, especially those that go in RVs warning for all Onan generators are built! Coolant that it never runs low expensive repair leg 1 with gen. running repair: for. Onan part number in the future, top off your RV gas tank so that it may be warm. Is low voltage begins with extending the generator slide and removing the side access....
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