RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 09-26-2020, 07:13 PM   #1
Junior Member
 
Scuba00's Avatar
 
Join Date: Nov 2018
Posts: 10
Electrical Issue ?

I have been having an issue with my coach just shutting down when either on shore or generator power. Coach is a Discovery 38N (2019). House batteries are new and chassis batteries are good. Coach runs and drives well, and as long as it has the engine running the generator will run the house. If I turn off the engine the generator shuts down a few min later. I had a RV mech come out and take a look. Iím plugged into 30A right and now and as is typical with most broken things, as soon as the mech arrived everything was functioning normal. We went through the whole system, checked all fuses and connections - everything checked out. The one thing he noticed that when he arrived the inverter was not actually running, light in back flashing but the fan inside was not. Said he wiggled the big red knob and then it started. Iím not really sure the inverter is supposed to ďrunĒ all the time. Everything working as it should, we even unplugged and ran on generator for awhile and still all good. He left and everything normal the entire day, until sunset. Sun went down and everything shut down. Sun came up this morning and all is well. Items that still work when the coach shuts down are the fridge and microwave, 110 outlets. The firefly and all the systems it controls are offline. When the sun comes back up the coach fires up and back to normal. So my brain says solar panel has something to do with this mystery. Looking for a wiring diagram for a 2019 Discovery 38N, and any thoughts, I appreciate it, sorry for the long post.

Thanks
Steve
Scuba00 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 09-26-2020, 07:49 PM   #2
Senior Member
 
Join Date: Apr 2020
Posts: 786
"If I turn off the engine the generator shuts down a few min later." What voltage is on the battery when the generator shuts down? with that said, I'm thinking a fuel issue, that when the main engine is running, tank pressure is ok, but when you shut the engine off, the fuel tank maybe not allowing fuel to flow. Just a thought.
__________________
2006 Damon Daybreak 3276 35'. 3 200 Amp Lithium batteries and 2000 watt Pure wave inverter/charger.
2013 Elantra on a Master Tow dolly.
HarryStone is online now   Reply With Quote
Old 09-26-2020, 08:02 PM   #3
Senior Member
 
Join Date: Jul 2014
Posts: 24,254
The big red knob is most likely a battery cable disconnect switch.

If it was off, you will get no power from the batteries.

With the engine running, you were running off the chassis batteries. When you shut the engine down, the house ran off the chassis batteries until the voltage dropped to 12.6, when it disconnected from the house, so it wouldn't run down.
twinboat is offline   Reply With Quote
Old 09-26-2020, 08:26 PM   #4
Senior Member
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Nov 2009
Location: FORT WORTH, TEXAS
Posts: 1,999
Long distance diagnosis is tough. Especially with no or limited information.
I am going to make a SWAG and say you have a 12volt problem. You apparently have a small solar panel on the roof that is providing some 12 Volt power during the day. This is enough to power the control circuits you need to run the generator. I have no idea what "The firefly and all the systems it controls" is. But I bet it needs 12 volt power to operate any circuit boards.
"The fridge and microwave, 110 outlets." these are powered through the inverter.
Using a meter start at the cables coming from the house batteries to the battery control center. I also am suspect of you Converter auto transfer switch. You are getting power from the solar but not switching to battery when the sun goes down. It should be providing all the 12 volt power when on shore power or on generator. I think the solar is doing that when it is producing power.
Do some testing and let me know what you find.
Bill
__________________
2008 Newmar Mountain Aire
450 HP Cummins ISM 4000MH Allison Trans.
Towing a 2014 Honda CRV with a Blue Ox tow bar.
WILDEBILL308 is offline   Reply With Quote
Reply

Tags
electric, electrical



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
No electrical power at one lug (3) Left Front Electrical Center RobRoy Monaco Owner's Forum 18 03-31-2017 11:59 AM
Southwind 36D Issue after issue after issue.... fixn2gocamp Fleetwood Owner's Forum 4 10-21-2009 07:05 PM
electrical issue...maybe Gdlow MH-General Discussions & Problems 6 07-18-2008 04:57 AM
GFCI Electrical Issue Roam America 5th Wheel Discussion 2 06-04-2008 10:31 AM
breaker- electrical issue 2racer RV Systems & Appliances 5 10-02-2007 04:03 AM


All times are GMT -6. The time now is 08:14 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.