Onan MicroLite 2800 Series Pdf User Manuals. View online or download Onan MicroLite 2800 Series Service Manual. This video is a tutorial on how to change the oil on your Cummins ONAN 2500 LP generator on your Lance truck camper, or other RV. Although my model is the R.

In my search to quiet down the Onan 2500 Microlite propane generator, I decided to install an Onan Resonator (Part# 155-2449) which was recommended by couple of RV.net members. To start, first determine the placement of the resonator. Onan Generator Training Manual (932-0404), and KV Operator’s Manual (981 -01 29) and Installation Manual (981 -0626) are recommended as additional sources of information. I MODEL IDENTIFICATION When contacting an Onan dealer or distributor, always supply the complete Model number and Serial as shown on the Onan nameplate. This information is. Onan Microlite 2500 Lp Generator Onan 2500-Watt Propane Generator for Motorhomes and Trailer RVs̶In Stock, Ships Free in 1-2 Days from Norwall’s Warehouse Onan Microlite 2500 Lp Generator Service Manual Each Cummins Generator has a model/spec number description, which is shown on the serial number tag attached to the generator.

Model FA26120H (Spec H), S/N A000050942. It was made around the year 2000 and has 63 hours on it. It is installed in a truck camper.
Once started, it runs good and handles loads fine (A/C, microwave, etc.). The starting problem has been getting progressively worse. It only used to give me problems when it was cold. Now it is hard to start when it is warm out whether or not it has been running. Some other observations and things I have checked:

The air filter is clean.
It has a good spark when cranking. The spark plug looked clean but I replaced the spark plug anyway.
The primer solenoid does not pull in by itself when cranking. I have to give it a little push and then it will stay in by itself. However, if the engine fires it usually pulls itself in whether or not the engine starts. It goes back out once the engine starts or I let off the start button. If adjust the red dial on the plunger to 1 1/2 turns out per the service manual engine won't start (hot or cold) if it pulls in. The engine will fire, the plunger will pull in, and the engine stops firing. Sometimes the engine will start if I manually keep the plunger from pulling in at this setting. I need to have the red dial set way out (~ 5 turns) for the engine to be able to start when the plunger is pulled in. The engine will not (or rarely) start without the plunger pulled in.
The pressure balance hose is 24' long and does not appear to be blocked or have leaks. I can't disconnect it from the regulator due to access but I can disconnect it from the carburetor. If I lightly blow through or suck on the hose (be kind and hold the jokes) it freely passes air through the regulator. If I increase the pressure in either direction it checks off although it does leak slightly in either direction. If I disconnect or pinch off the hose while the engine is running it will run rough and die. However, if I pinch the hose while the engine is cranking it will often start. The engine will initially run rough until I release the pinch (unless it dies first), continues to run rough for a bit, then smooths out while surging, eventually settling out. This is one of the tricks I use to get it started.
The engine usually runs rough for the first second or so after starting and sometimes surges for a several seconds before settling down. I need to continue holding down the start button for a second or so after the engine has started or it will die if it is running rough.
Sometimes the starter solenoid chatters like I have a dead battery or bad connection even though the batteries are fully charged. I have not been able to find any bad connections anywhere between the camper and generator. I may have to repeat pressing the start button a few times to clear this and then it will crank fine. I don't know if this is related to the hard starting problem but thought I would mention it.
The propane bottles are full and all of the propane appliances in the camper work fine.

Any help or suggestions would be greatly appreciated.
Thanks
Sterling
---------- Post added at 11:56 AM ---------- Previous post was at 11:40 AM ----------
Also, if a moderator could correct my misspelling of Microlite it would be appreciated.

If you blink you may miss it. That may be a bad pun, but it is the truth when it comes to Onan generators. When something goes wrong, the generator will send out a code to tell you the problem. If you blink, you may miss the number of the error code.

How to Read Onan Generator Fault Codes: It’s not hard to read the Onan Fault Code blink system, once you get used to it. They use a blink and pause design to make their numbered codes clear and not confusing. For example, if the light blinks 5 times then pauses, then blinks 1 more time, that signifies Fault Code 51.

Free music download for apple laptop. To learn more about the different Onan Fault Codes, what they mean and how to fix the problem, just keep reading our article. All the information is here for you to learn from. Onan Fault Codes are easy to learn if you do not blink while they are sending their message.

Onan Generator Blink Code 101

Onan Generator Fault Code List

Code 2 - Low Oil Pressure

This code will only blink twice. It shows that the generator is low on oil and you need to add more. Twist off the yellow cap to look at the gauge and see how much more you need to put in.

Just remember to not over-fill your oil tank. Too much oil is not a good thing

Code 3 - Service Check

When you see this code, it indicates that there is a problem somewhere on your Onan generator. You will get 3 flashes then a pause, then 3 flashes, then a pause and on it goes till you press the button to get the secondary code.

The secondary code will give you the specific problem that is wrong with your generator

Code 4 - Over Crank

The first thing you need to do when you see this code is to try to reset your control board. You do this by turning the switch off and then hit the reset button. Next, you need to turn the switch back to run. If it starts you are fine. If it doesn’t and the code returns, then you need a new control board

Code 12 - Over Voltage

This problem comes from a faulty inverter and that part is overcharging the generator. The only way to solve this Fault Code problem is to take the generator to a qualified Onan dealer or repair shop.

Alternative sources for this code may be a lack of fuel or a clogged filter problem. Then you just add more fuel or replace/clean the filter

Code 13 - Under Voltage

This code tells you that the controller is incapable of maintaining proper voltage levels. There is a simple fix to this problem. Unplug all unneeded appliances while the air conditioner and battery charger are running.

Another source for this problem would be that the engine slowed down for a variety of reasons like a lack of fuel.

Code 14 - Over Frequency

This code tells you that the engine is running too fast and the sources for this code could be one of the following reasons: air leak at the intake, carb, and linkages not properly installed, misadjusted governor, broken governor.

Check your frequency levels first. Then clean or replace your carb, check to make sure the linkage is not reversed or replace the governor. For more info, read our Onan generator fault code 14 guide.

Onan Microlite 2500 Lp Service Manual Diagram

Code 15 - Under Frequency

This is the opposite of the above code. When you see this number, your engine is running too slow. The solution may be that everything was not connected properly or that the governor is in the wrong spot. It has to be in the 5^thnotch from the right.

If the generator still flashes, you may have restarted your generator in under a minute and are running in ERO mode. You get the engine running but no power in this mode. Turn the generator off and wait for at least 2 minutes before restarting.

Onan Microlite 2500 Lp Service Manual Instructions

Code 19 - Governor Actuator Overload

The governor has one wire to the controller and one wire for ground. If either one is loose, that will trigger this code. All you have to do is tighten the loose wire and you should be