Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar Owner's Forum
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 01-19-2022, 05:52 PM   #1
Senior Member
 
Newmar Owners Club
Join Date: Aug 2011
Location: Dayton, Ohio
Posts: 298
Magnum Inverter & Charger failure

Our 2105 Dutch Star has recently exhibited failure of the inverter/charger power. The AC appliances normally draw their power from the AC current. However now they draw their current from the inverter, resulting depletion of the batteries and the exercise of the generator to restore the proper battery power. The generator is activated only when the system not connected to an external power. The charger portion of the system is never activated!
Newmar service dept. believes that the Transfer Switch has failed since the "charger" never is activated. They claim that this failure is common in RV'S. I have never seen any threads on this failure, no comment yet from the manufacturer.
__________________
Geoff & Laura Neumann
2015 Dutch Star 3736
2014 Jeep Grand Blue Ox Air Force One
rg neumann 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 01-19-2022, 05:57 PM   #2
Senior Member
 
tomato's Avatar
 
Join Date: May 2021
Posts: 410
Quote:
Originally Posted by rg neumann View Post
Our 2105 Dutch Star has recently exhibited failure of the inverter/charger power. The AC appliances normally draw their power from the AC current. However now they draw their current from the inverter, resulting depletion of the batteries and the exercise of the generator to restore the proper battery power. The generator is activated only when the system not connected to an external power. The charger portion of the system is never activated!
Newmar service dept. believes that the Transfer Switch has failed since the "charger" never is activated. They claim that this failure is common in RV'S. I have never seen any threads on this failure, no comment yet from the manufacturer.
Are you saying that everything on the inverter leg pulls inverted power even when you are plugged in to shore power or running the generator? If so, it is something with the AC pass-through. It may be as simple as a fuse on the inverter itself. Or possibly the AC breaker that feeds your inverter from the main panel.
tomato is offline   Reply With Quote
Old 01-20-2022, 12:59 AM   #3
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 20,384
I think you need to start from the beginning and check incoming power. From what you describe, it sounds like the transfer switch is stuck in the generator position. It could also be a power cord reel failure. I would open the transfer switch and check for AC power coming in (checking the cord reel) and then AC power going out of the TS. If no AC power going out, a transfer switch issue.

Before you do any of the above, take a rubber handled hammer and using the handle, give the TS a good whack.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
Dutch Star Don is offline   Reply With Quote
Old 01-20-2022, 05:59 AM   #4
YC1
Senior Member
 
YC1's Avatar


 
Join Date: Jun 2011
Location: FL
Posts: 10,272
Start at your AC breaker panel and look for the breaker that feeds the INverter/charger.

It could be a 30 amp. Push it to the off position and press it off. Cycle back on.

If no joy, grab a voltmeter to see if there is 110 volts coming into the inverter. There are plenty of diagrams and your owners manual for the inverter will show you where to measure.

If no 110 into the inverter it will not come on of course and you have already tried the AC breaker so you can open the panel and see if there is incoming 110 to the breaker.

If no joy there, find your transfer switch as already suggested and take measurements inside of it. Again, you should have a manual for that device. It could be as simple as a loose connection which is common.

It is common for transfer switches to fail. If it is bad you can wire around it.

Of course you need to be sure you have voltage coming into the transfer switch on both legs. I have seen breakers on posts with separate breakers for each leg and one got tripped.

This should be pretty easy to sort out.
__________________
Myron & Deborah
08 HR Endeavor 40 SKQ
400 Isl, 400 HP/// Now 450 HP
2016 Ford F150 Limited V6 with Ready Brake
YC1 is offline   Reply With Quote
Old 01-20-2022, 06:38 AM   #5
Senior Member
 
rffowler55's Avatar
 
Join Date: Feb 2020
Location: North Georgia Mountains
Posts: 474
Quote:
Originally Posted by rg neumann View Post
Our 2105 Dutch Star has recently exhibited failure of the inverter/charger power. The AC appliances normally draw their power from the AC current. However now they draw their current from the inverter, resulting depletion of the batteries and the exercise of the generator to restore the proper battery power. The generator is activated only when the system not connected to an external power. The charger portion of the system is never activated!
Newmar service dept. believes that the Transfer Switch has failed since the "charger" never is activated. They claim that this failure is common in RV'S. I have never seen any threads on this failure, no comment yet from the manufacturer.

Magnum technical support will be able to assess if the inverter is working properly. We have several Magnum inverters for our coach and home's solar power system and they all have internal transfer switches within the inverter that senses A/C power, from shore or generator, and when present, utilizes the A/C power, when the above A/C is not present the internal transfer switch activates the inverter to start pulling power from the batteries and inverting the 12v to 120v needed for the appliances that rely on the inverter backup power supply. If the internal transfer switch fails what you describe above is to be expected either on the A/C in side or inverter activation side.

We have also had Magnum inverters that did not have internal transfer switches so we had to install a separate transfer switch to utilize A/C shore or generator power when available and inverter power when not. Again, Magnum technical support will know the functionality of your specific unit and can help with trouble shooting your problem.
__________________
2007 Newmar Baystar; 3201; miniature schnauzers and labradoodle. SumoSprings Front; Safe-T-Plus;2016 Fiat 500; Roadmaster Falcon 2;Demco SBS DUO Braking System;TST 507;Bilstein shocks; Garmin RV 785,Supersteer Rear Trac Bar, Thule Easyfold XT2
rffowler55 is offline   Reply With Quote
Old 01-20-2022, 02:43 PM   #6
YC1
Senior Member
 
YC1's Avatar


 
Join Date: Jun 2011
Location: FL
Posts: 10,272
One side note, you should be able to control the inverter output by turning it off and thus not running your batteries down.

But, no goes into, no goes outta. Needs 110 volts in to pass it through and begin charging as well.
__________________
Myron & Deborah
08 HR Endeavor 40 SKQ
400 Isl, 400 HP/// Now 450 HP
2016 Ford F150 Limited V6 with Ready Brake
YC1 is offline   Reply With Quote
Old 01-20-2022, 04:48 PM   #7
Senior Member
 
powerboatr's Avatar
 
Damon Owners Club
Freightliner Owners Club
Join Date: Mar 2006
Location: North East Texas
Posts: 4,811
when my magnum failed a few years back it got stuck applying voltage to coach even when power was available from shore and back fed 120 volts into the microwave and coffee pot on the return line both let out smoke, thankfully the convection micro only blew an internal fuse, coffee pot died suddenly



so we had 2 hot lines feeding the appliances, vice one hot and one return and a ground. blowing a 200 amp 12 volt fuse was an eye opener as well when it happened.



it tripped everything on the inverter powered side of coach



your control pad should have tech info and trouble codes if its actually failed and not a tripped breaker.



magnum support/techline was a HUGE help when it happened.
__________________
USN Retired, Life time member of the DAV.
Enjoying the 2008 Damon Tuscany 4056, #3998 no your eyes are fine, there are really 6 slides
2022 F150 King Ranch or 2012 Edge toads

powerboatr is offline   Reply With Quote
Old 01-20-2022, 07:41 PM   #8
Senior Member
 
Mr JP's Avatar


 
Newmar Owners Club
Join Date: Dec 2009
Location: Southern Nevada
Posts: 716
When our magnum inverter failed while plugged in to good 50 amp pedestal. We had no charging to the coach batteries. Anything that ran from that power source was dead. I had to hook up a battery charger to the batteries just to get some charge in them. The magnum tech. explained to me that as the power goes thru the inverter it passes thru a charger part that keeps the batteries charged and when the charger goes bad it creates an open circuit. If you call magnum a tech can walk you thru a simple testing procedure to troubleshoot your inverter.
__________________
Just the Wife & Me!! & Lily our Yellow Lab
2011 Newmar Mountain Aire 4344 !!
450HP Cummins on a Freightliner Chassis !!
Mr JP is offline   Reply With Quote
Reply

Tags
charger, inverter



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
Wiring both legs of 50 amp service into Magnum MS2812 Inverter Charger VintageRV RV Systems & Appliances 8 06-10-2020 05:16 PM
THe Charger side of my Kisae Inverter/Charger died, is a separate Charger good idea? elkski RV Systems & Appliances 0 03-31-2020 01:51 PM
Inverter+Charger or Inverter/charger blevtr RV Systems & Appliances 1 10-17-2019 11:19 AM
Discovery Firefly & Magnum Inverter/Charger ravansnest Fleetwood Owner's Forum 4 11-28-2017 06:06 PM
Upgrading from Magnum ME-2000 MSW inverter to Magnum ME-2800 PSW inverter. Stan&Jacquie MH-General Discussions & Problems 7 11-12-2015 07:54 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 09:04 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.