Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 01-14-2014, 11:18 PM   #1
Senior Member
RufussSewell's Avatar
Join Date: Sep 2013
Posts: 161
Gen power flickers

Well, I've had an expensive week, haha. First my house batteries died. I replaced them for $600. Then my water pump went bad. $1300.

Now it appears I have a new problem. About a week ago power from my generator started flickering off and on every two minutes or so. This doesn't happen on shore power or battery power. Just generator power.

Gen: Onan 7500 diesel
Inv: Heart Interface (Xantrex 458) 2000watt

My inverter panel resets as well. I don't know if this is an inverter problem or gen problem.

Based on other threads I turned of the breakers on the inverter and disconnected the batteries to reset the inverter. No change. I also turned off the Idle or power sensing function.

Could it just be a bad air filter on the gen or something maintenance based? It seems to get worse if I use the water heater or coffee maker.

1997 Beaver Patriot, Cat 330 DP, Magnum Chassis, Allison MD3060 Tranny, 50 amp 120v AC, 12v DC.
RufussSewell is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 01-15-2014, 02:54 AM   #2
Community Moderator
RV Wizard's Avatar

Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
I would star at the transfer switch and bake certain that it is or not a generator problem. More than likely it is a transfer switch or connections at it that are causing your problem. It sounds like high amperage loading is causing the transfer switch to drop out, although it is impossible to be sure without a meter and hands on the situation.

Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 01-15-2014, 03:43 AM   #3
Senior Member
94-Newmar's Avatar
Join Date: Nov 2009
Posts: 2,043
Well since none of this happens on shore power it wouldn't be the Inverter - as the inverter does not know nor care about the difference between shore and genset, so let's focus on the genset and as Mike mentions above, the transfer switch.

Does the genset ever die or shut off when this is happening?
If so, all QuietDiesel series will shut down with an error code set that can be retrieved by manipulating the STOP/START toggle. It is possible the inverter/controller is failing.

If not shutting down or setting any codes, It is entirely possible that the connections from the genset to the transfer switch are loose or bad at either end.

I have found many 120VAC leads on the back of the breaker inside the genset that have been loosened or entirely burnt at the connections to the breaker. The genset does not monitor it's power output at the point of it's own breaker(s) - only at the controller leading to the output.

If the wire connections to the breaker(s) right on the front of the genset are tight and not burnt up, then I would start with an AC meter placed right at the output side of the generator on those breakers and try to re-create the situation again. Work your way from there to the transfer switch.
94-Newmar Kountry Star 40-KSDP
Spartan/Cummins 8.3C-300HP/Allison 3060 WTEC-II/25yr RV Tech RVIA Certified/Onan-Cummins Certified
94-Newmar is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Kwikee Jacks Will Not Power Up Yellowboat Winnebago Industries Owner's Forum 8 02-15-2014 09:09 PM
Issue with no power @ outlets :( ShineGinny Travel Trailer Discussion 23 01-19-2014 09:24 PM
No DC power to motorhome glow4004 Monaco Owner's Forum 12 12-02-2013 09:22 AM
No power to Refrigerator pink303 RV Systems & Appliances 3 09-08-2013 01:52 PM
No power when plugging in RedWing Nut iRV2.com General Discussion 5 06-27-2013 01:37 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:47 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.