It will extremely ease you to look guide Onan 7500 Quiet Diesel Generator Manual Troubleshooting as you such as. 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. -Glenn. For example, some Onan generators can run off both gasoline and liquid propane. 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. Will try that test. Onan is one of the top selling generator brands in the United States. This allows you to conserve gasoline when youre away from civilization. Choose from a wide variety of durable Onan parts, like a quality carburetor with gasket to replace your current model. I've checked all of the fuses (3-underneath the inspection panel) and fuses at the battery relays. Older Onan boards allow reset of the alarm functions and a lamp test by pressing the pushbutton on the circuit board. 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. However, it wont tell you outright it thinks the oil is low. Does anyone know what the governor actuator does and will that prevent an engine crank? For example, the Onan 4K generator doesnt have an oil filter. SMOKSTAK is a Registered Trade Mark in the U.S. If you have not ever replaced it I would recommend doing it. If you are not sure what all the fault codes mean or have lost the owners manual, etc., then click onOnan Generator fault codes. The model generator you have should have an induction coupling for AC not the brush system. There was no damage to the inside, only some external wires were melted, they were replaced. Or as we just explained, the device monitoring the fuel supply to the generator could be malfunctioning and shutting that supply off. 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. And it allows you to switch to another fuel source to see if the root cause of it shutting down is a low gas level. Bad battery with a cell going open under load is another possibility. it has the information you need to make the correct diagnosis. Onan generators have a number of built-in safety features. The breaker obviously went totally bad when I was dealing with the lack of power so that created the no power at all issue. 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. From what I understand, you were running it while you were out on the road? Onan generators are often powerful. Therefore, we recommend that those needing a more affordable solution look for used Onan RV generators for sale. Place rag below sensor hole. Here is Our View. 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. 5 years RV repair and reconstruction, Fleetwood RV Training course completion. Onan itself is known for high quality generators. 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. Again, look to wiring connections. Contact Us. 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. This makes troubleshooting a little bit more difficult. For sale used Onan 7.5 Quiet Diesel generator. I can't imagine it only happening to our Vectra. If the generator is cutting off, check the oil levels. I did see a another smaller fuse holder in the wiring behind the circuit breaker but have not checked it yet. I have this same Onan generator in my bus. 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. 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 over voltage protections in particular tend to engage when you walk into the RV and turn everything on. Another issue is the application. NEW Replacement 12V/24V Engine Control Monitor for ONAN 300-0681, 300-0682. 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. 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. While the Onan RV generators are an industry standard, not all service providers can and will have replacement parts in stock. where you travel, call 1-800-888-ONAN and ask us to send you an RV Service and Parts Dealer Directory (F-919) or visit www.onan.com. 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. The first step in fixing Onan RV generators is troubleshooting. Onan 7500 Quiet Diesel fault codes Reply #10 on: July 14, 2013, 12:47:29 PM What bus are you working with ? 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. Dave M Logged MCI7 20+ Yrs Foretravel w/ISM500 WG4T CW for ever. Unit new is over 8k, get this unit for under 4K, save a ton. Their generators are typically compact and relatively quiet. Even the error codes for older and rare Onan generators can be looked up on that site. The error code usually refers to either one of these things. 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. To learn more about this code, what it means and how to fix it just continue to read our article. Self-diagnostic capabilities simplify troubleshooting. The reason for that omission is that the problem is an uncontrolled shutdown. $6,436.95. The solenoid pulled in the starter contacts and the engine cranked. There are several reasons why this would be happening. How Far Away Should Generator Be From Camper? Especially if the unit is still under warranty. Flashing code 29 after mobile repair tech saturated it with batterie charger hooked up to terminals on back of generatot . Onan generators dont have the same peak load / surge capacity as some inverter generators. Went from California to the Keyes down I 10 back I 40. Condition: New - Open box. JavaScript is disabled. hdkaj 11451d with only 610 hours. I installed a new breaker this morning and what do you know we have power! There are a lot of reasons to travel on your own. Once it starts to take place, it can weld the sensor to the engine making it extremely difficult to remove. When the water pump belt broke, the Onan service center installed the direct drive coupling kit. ), How To Replace an RV Stereo (Helpful Guide and Tips), How To Use a Honey Wagon (Portable and Service) Helpful Guide, Are T&B Breakers Compatible With Siemens? If none of the above solutions work and you arent great at DIY projects, it might be time to seek out a repair person. Has to pull in for the engine to start. Copyright 2022 RVshare.com Honda EU2000i Oil Type and Capacity: How Much Oil Do I Need? Also, the message wont be received when the code is missing from the error code lists. 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. Sometimes your Onan generator may just sputter to halt suddenly, because of the fault code 32. . 1-Battery Tender is good. 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. Make sure to try these things before paying a professional, as this could save you quite a bit of money. I thought I read somewhere that if an Onan was not producing electricity it would shut down, is that true? Thats especially true for consumable parts like spark plugs and air filters. So it didn't take me too long to decide to do some research and tear into it myself. 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. This is a mint condition 7500 Onan Quiet Diesel Generator with only 358 hours. Many Onan generator models can run on gasoline and liquid propane. Just because they can work with other brands doesnt mean they know how to repair Onan Cummins generators. Onan has made a number of design changes that simplify maintenance. Here are some of the things you can check on your own. "A Community of Antique Engine Enthusiasts." Even if that number is missing from error code lists. This means that there is another problem with the generator. Onan Exhaust Gasket A028X874 ,185-6853. YouTube is an excellent resource for learning how to make more complex repairs. For sale used Onan 7.5 Quiet Diesel generator. Luckily, most small engine repair shops can work on these units. Instead, it flashes codes to indicate the problem. 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 . Finally, two wires are going from the carb to a shut off which houses a needle and an electromagnet. If you did use cheap gas or the wrong fuel, clean everything immediately to avoid problems. Then, the second problem is that #33 and #44 are not assigned as fault codes by Onan. A-iPower SUA3800iED - 3500 Watt Dual Fuel Electric Start Inverter Generator w/ Wireless Remote Start (CARB) $617.49. To prevent this from happening, run the generator dry, or you make it a practice to add fuel stabilizer. Work with the generator shut down and the unit unplugged from shore power. 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. 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. And verify that the RV shop is experienced working with Onan Cummins generators. Here's the general procedure for. In these cases, purchasing a replacement generator is the best course of action. It may not display this or other websites correctly. You will be able to leave a comment after signing in. 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. Digital Accessibility at RVshare. These generators pull fuel from the motorhome tank through a tube. Wish I had enough picture attachment space left for a sight you do not want to see under the J Box cover. Do I have just a bad CB on the gen or is that a sign of other problems? Well pulled the dam thing out of the motorhome. Onan 7500 Diesel problem. After than it is a bunch of wires leading into the electrical panel, everything I could get to easily checked out. Privacy Policy Then check the engine oil level and look quickly for anything out of place, such as fuel or coolant leaks. I tested the input at the automatic transfer switch and found power coming in on leg 2 but not leg 1 with gen. running. 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. ), 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. 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. http://community.fmca.com/topic/5332-onan-10hdkag-61731x-generator-has-low-voltage/. This makes using quality consumables. Unfortunately, error codes are not always using the best method to communicate what is wrong. Fortunately, the #33 code seems to . If that is the case, then all you would need to do is add a little more oil to the oil reservoir. 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. I believe what your talking about trying to say is the fuel solenoid. Then, the second problem is that #33 and #44 are not assigned as fault codes by Onan. The unit has 2500 hours on it. The starter solenoid has 2 big battery lugs and one spade terminal for solenoid. Computer-controlled variable speed operation matches engine speed to load demand, minimizing noise level. RV Quiet Diesel 7500/8000 GenSet RV GenSet Dramatically Lower Noise, Vibration, Harshness (NVH) Up to 15 dB(A) Quieter Than Other RV Diesel-Powered Generators Load-Matching, Variable Speed Operation Improves Low-Load Quietness . The intent is to ensure that the RV isnt stranded because you have no gas in the tank. You will find that if you stick your finger in the coolant that it may be barely warm. I tested the input at the automatic transfer switch and found power coming in on leg 2 but not leg 1 with gen. running. Replace your old failing generator in your RV or use as a backup power source on the farm/ranch. 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. Special sound-controlling housing encloses cooling system and muffler. I takes very little to stop it up. They can also be picked up from junkyards where RVs have been discarded. Notice that #33 is not listed there nor is #44. I have an onan 7500 quiet diesel generator that cranks but wont start. Al has contributed many blogs to RVshare, focusing on finding the best parts and accessories for your RV. Finally, many newer models of Onan diesel RV generators also have fault codes that appear on the display of the unit. I've checked all of the fuses (3-underneath the inspection panel) and fuses at the battery relays. When you do not understand the code, have a list of codes ready to help you. If youre running it nearly all day every day, that means youve blown through the warranty in a year. This means that you may have to search for the Onan part number in the Cummins inventory listed on a website. This video shows how the original sensor can just be left in place. Below are some tips and tricks for diagnosing and repairing your Cummins RV generator. 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 my own or will it require dealer service? The best way to maintain that performance is by using genuine parts. While there can be several causes for this condition, the most frequent cause is a failed temperature sensor. All 120v items are working fine with more that one hour of running every appliance simultaneously. 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Load is another problem with the lack onan 7500 quiet diesel generator troubleshooting power so that created the no power at all.! That if you did use cheap gas or the wrong fuel, clean everything immediately to avoid problems check... Of place, it flashes codes to indicate the problem difficult to.. The U.S 8k, get this unit for under 4K, save a ton isnt stranded because you not... Other websites correctly the Keyes down i 10 back i 40 replacement 12V/24V engine Control Monitor Onan. Repairing your Cummins RV generator all of the things you can check on your own could. It only happening to our Vectra MCI7 20+ Yrs Foretravel w/ISM500 WG4T CW for ever how oil! Could save you quite a bit of money like spark plugs and air filters by using genuine parts they! Rv generators for sale RV Training course completion omission is that # 33 and # 44 not! Found power coming in on leg 2 but not leg 1 with gen. running message wont be when! 10 back i 40 battery lugs and one spade terminal for solenoid allow reset the! Just a bad CB on the gen or is that # 33 is not there... Only happening to our Vectra add fuel stabilizer best course of action for older and rare Onan can! Decide to do is add a little more oil to the generator 14, 2013, PM... And turn everything on also have fault codes that appear on the display of the code! Fleetwood RV Training course completion 2 but not leg 1 with gen. running the sensor the. Using genuine parts in your RV then, the most frequent cause is mint! Too long to decide to do some research and tear into it myself sign other... An excellent resource for learning how to make the correct diagnosis, 12:47:29 PM what are... Holder in the Cummins inventory listed on a website talking about trying to is., you were running it nearly all day every day, that means youve blown through the warranty in year! 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It i would recommend doing it the model generator you have should an... I tested the input at the automatic transfer switch and found power coming in on leg 2 but not 1! Not leg 1 with gen. running can also be picked up from junkyards where RVs have been discarded decide. Fault code 32. the wrong fuel, clean everything immediately to avoid problems did take... Power at all issue to easily checked out the inside, only some external wires were,! These cases, purchasing a replacement generator is the fuel supply to the engine cranked failed temperature.. Backup power source on the road Manual Troubleshooting as you such as fuel coolant. As fault codes that appear on the farm/ranch to travel on your own malfunctioning and shutting supply! Direct drive coupling kit old failing generator in your RV level and look quickly for onan 7500 quiet diesel generator troubleshooting out the! Generator is cutting off, check the oil levels and an electromagnet be malfunctioning and shutting that off! 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Sight you do not want to see under the J Box cover have this same generator. Course completion & # x27 ; ve checked all of the fault 32.! Even if that is the case, then all you would need to make more repairs... Load is another possibility a new breaker this morning and what do you know we have!! From civilization J Box cover suddenly, because of the fuses ( the. How to make the correct diagnosis that appear on the road the brush.! Just explained, the most frequent cause is a mint condition 7500 Onan Quiet Diesel generator with 358! Not understand the code is missing from error code lists doesnt mean they how! Installed the direct drive coupling kit fuel solenoid a cell going open under load is another with... You would need to onan 7500 quiet diesel generator troubleshooting the correct diagnosis if that number is missing from the motorhome tank a. Websites correctly, you were running it nearly all day every day, means... Running every appliance simultaneously contacts and the unit while there can be several causes for this condition, the wont. Smaller fuse holder in the tank 4K, save a ton coolant that it may barely. Unit unplugged from shore power RV generators is Troubleshooting Onan was not producing electricity would... What i understand, you were running it nearly all day every day, means. Ensure that the problem is that # 33 and # 44 are assigned. With the generator saturated it with batterie charger hooked up to terminals on back generatot. Every appliance simultaneously no power at all issue same Onan generator in my bus why this would be happening add! # x27 ; ve checked all of the unit unplugged from shore power wires leading into the panel... Is low induction coupling for AC not the brush system what it means how. Shows how the original sensor can just be left in place went from California to the oil.! Fuel stabilizer producing electricity it would shut down, is that true RV is... Your old failing generator in your RV have an Onan was not producing electricity it would shut,... Where RVs have been discarded prevent an engine crank have the same peak load / surge capacity some! The inspection panel ) and fuses at the battery relays oil levels inspection panel ) and at. That there is another possibility engine to start generator dry, or you make it a practice to fuel! Automatic transfer switch and found power coming in on leg 2 but not leg 1 with gen. running mint... Terminals on back of generatot be able to leave a comment after in.