Code 14 on LPG ONAN 5500 - stops on disconnecting load

I did a quick Google search. Fault code 14 is a over frequency fault. This is caused by your generator running at a higher frequency than 60 Hz.
I have a Kill A Watt meter that I plug into a 120 volt receptacle. One of it's readings is frequency. You will probably see a higher than 60 Hz reading when generator has no load on it. Usually requires adjustment of the governor speed to get proper Hz.

Suggest you click "Notify Moderator" and ask to move this to Tech Issues. Not 'cause it's a Fiver and this is Class C, but because a genny can be in anything and Tech is where some of our Genny Gurus hang out.
Generac isn't as popular as Onan, so might take awhile to hear from somebody. Be sure to post the full Model Number. If there's a Manufacture Date, suggest you include that.
Finally, there's Smokstak.com which includes gennys and within that includes Generac.
Remember, even though most RV gennys run at a certain RPM, they still "idle" at that RPM if there's no load. At least in gasoline gennys, there's an "idle circuit" in the carburetor and its passages are even smaller than those in the power circuit. This means it's possible for a genny to carry a load yet not be able to run no-load. I had that exact situation with our Onan 4KW 3600RPM gas genny. Sometimes the carb can be cleaned and adjusted. I had to replace ours.
EDIT: I like ronf's comment above. With older gennys, those without solid state logic control boards and electronic voltage regulation, Cycles (hZ) and Voltage were "wound" into the build of the genny. If it produced 60hZ and/or 120VAC (whichever you had a meter that could display it) then it WAS at 1800 or 3600RPM. Likewise if you had a tachometer, if you could verify it was at 1800 or 3600RPM, you didn't need any other test equipment to know it was at 60hZ/120VAC. But you have some form of electronics capable of displaying that "14" so you may need more tools, more help.
Easiest thing to do might be make sure all the mechanical linkages are completely clean and free. If it can't get back to idle, it's likely to trigger that code and shut down.

Good advice on overcycling. The cycles are controlled by engine rpm. A Kill-A-Watt meter is a good investment and will tell you what the cycles are. With no load they should be about 62 cycles and at full load should drop to about 58 cycles. If they are out of spec try lubing all the throttle/governor linkage. If that doesn't fix it the governor may need to be adjusted. That is done on the linkage.

J-D he said it was an Onan Marquis Gold 5500.

jd,

A non-inverter generator like that one runs at a constant speed with slight variation depending load.

A brain that's Too Old reading Too Many Genny Threads!

Thank Heaven it's an ONAN! Even if ONAN didn't work better, which I believe it does, the sheer availability of parts and information makes them better to own.

Sounding more and more like it's not getting back to its No Load/Idle State, RPM-wise, causing the Logic Board to shut it down.

With apology for thinking it was that Dark Side Brand, I line up with the Check Linkage Gang.

If this gets any deeper, be sure to post the ONAN Model and Spec codes.

ronfisherman wrote:
I did a quick Google search. Fault code 14 is a over frequency fault. This is caused by your generator running at a higher frequency than 60 Hz.
I have a Kill A Watt meter that I plug into a 120 volt receptacle. One of it's readings is frequency. You will probably see a higher than 60 Hz reading when generator has no load on it. Usually requires adjustment of the governor speed to get proper Hz.

I bought a TRC Digital Monitor AECM20020 for this very reason. Nice description here. It's $60 price is a lot when compared to the Kill A Watt meter's price, but I bought for the fact that it measures frequency. In my case the surge protector is on the pedestal. It is fine for over/under volt on the shore power, but I have no monitor for the MQ4000 when boondocking. This monitor, with its alarm, was my solution to cover both. features:

• Voltage range 85 to 150 Vac RMS
• Frequency range 40/80 Hz
• Operating current 0.02 Amp
• Under voltage alarm less than 102 Vac RMS
• Over voltage alarm greater than 135 Vac RMS
• Under frequency alarm less than 55 Hz
• Over frequency alarm greater than 65 Hz
• Outlet type 120V/15A single phase
• Operating temperature range +32?F to +125?F
• Backlit LCD display