rog1215
South west georgia
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Joined: 03/26/2005
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My Victory lane toyhauler with onan genset 5500 gold gasoline model # 5hgjab will run about 10 minutes and shut off. The self diagnostic light indicates a overfrenquency fault. this unit has only 235 hours on it and is serviced regularly.
Can anyone tell me how i can fix this. The unit shuts down and gives fault indication with no appliances running.
Thanks
05 3/4 dodge CTD,48e,Bright red,Quadzilla tow box chip, line x
Reese slider, prodigy brake & airbags, Autometer full pillar gauges, EGT, Boost, tranny temp
05 35' victory lane TH,pin extension
two 03 harleys and 1 1940 flathead harley
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pulsar
Lewisville, NC
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Moved from Forum Technical Support to Tech Issues.
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markandkim
Swansea, MA.
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Overfrequency means overspeed. Need adjusting.
Retired Military Campers
2008 Dakota 4.7L 2012 Hemi 1500 (soon)
2010 Amer-Lite 255BH
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othertonka
Stockton, CA
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Try putting a load, run an appliance, on it after 2 minutes instead of 10 minutes and see what happens. You say it shuts down after 10 minutes without any load and gives the over frequency fault code.
I think frequency is adjusted by speed of the engine as posted above but you need a preset load and frequency meter to set it up.
Othertonka
2004 Southwind 32VS 8.1 Workhorse chassis
2002 CRV Toad
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wolfe10
Texas
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To carry this line of thinking a little further, it is not good for any generator to be at "idle" for 10+ minutes. Yes, let it warm up for a few minutes before putting a big load on it, but no need for 10 minute warm up.
Brett Wolfe
1993 Foretravel 36' U-240
Cat 3116, Allison 3060
FMCA Forum: www.community.fmca.com/index
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Dusty R
Charlotte Michigan 48813
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Do a voltage test. Find what the voltage is supposed to be. If the over-frequency is because of over speed then the voltage will also be high.
Dusty
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othertonka
Stockton, CA
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Just another thought, you can get a "Kill a watt" and plug it in to an AC outlet and then read the voltage and then read the frequency all from the same place inside the RV with the genny running. It can also be used when on shore power at a RV park to check the same thing,. Here is a link to what a kill a watt is.
Kill A Watt
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rog1215
South west georgia
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Gentlemen, thanks a ton for the info provided, i now understand the nature of the issue. will go out today and start gen and then apply load. if this fixes issue i will then check rpm at no load and see if it needs adjusting.
Regards, Roger
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rog1215
South west georgia
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ran ac and gen did fine, volt check showed 124 vac thanks for the help fellas
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Clay L
Sioux Falls, South Dakota
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The 5500 has a voltage regulator so the voltage can be normal even it is running too fast.
You might want to check for binding in the governor mechanism. It shouldn't over speed when running with no load.
Clay (WA5NMR), Lee (Wife), Katie (cat).
Full Timing in a 2004 Winnebago Sightseer 35N, Workhorse chassis, Honda Accord toad
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