Sprinter-Forum    
 

Go Back   Sprinter-Forum > Sprinter-Based RV's & Conversions > Sprinter-Based RV Brands > Leisure Travel Vans > Unity


 
Thread Tools Display Modes
Old 07-22-2019, 01:31 AM   #11
autostaretx
Erratic Member
 
autostaretx's Avatar
 
Join Date: Sep 2006
Location: Seattle
Posts: 17,098
Thanks: 3,004
Thanked 7,670 Times in 5,611 Posts
Default Re: Coach charging solenoid

Quote:
Originally Posted by RV2019 View Post
Does this mean the solenoid has intermittent issues?
Quite possibly ... or the circuit that's driving the small wire.

The loss of a tenth of a volt across the relay "feels" a little high, but i don't have comparisons to base that on.

--dick
__________________
2005 T1N 118" Freightliner 2500 Passenger Wagon (2.7L, 15" tires, standard (short) roof)
Get YOUR Sprinter's full configuration datacard by entering your VIN to https://www.datamb.com/
http://diysprinter.co.uk/reference <-- lots of service documentation, Thanks to Jens Moller and Arnie_Oli
((as always: this post may go through a couple of post-posting edits... so maybe give it ten minutes before commenting))
autostaretx is offline   Reply With Quote
Old 07-22-2019, 01:36 AM   #12
RV2019
2017 Wonder MB
 
Join Date: Mar 2019
Posts: 124
Thanks: 3
Thanked 18 Times in 14 Posts
Default Re: Coach charging solenoid

It has all been working well this trip (25 days).

I’ll have to start monitoring the VictronConnect app during our travels I guess.

Any other suggestions?
RV2019 is online now   Reply With Quote
Old 07-22-2019, 10:34 AM   #13
mikeme
2015 LTV IB: 2015 3500 V6
 
Join Date: Jan 2015
Location: http://www.fairfaxcounty.gov/
Posts: 1,118
Thanks: 245
Thanked 568 Times in 398 Posts
Default Re: Coach charging solenoid

Did you have the battery at a very low level of charge?

one additional component in the system is an isolation delay relay,

https://pdxrvwholesale.com/products/...y-00-00629-120

this device inserts a delay after sensing that the engine voltage indicates that the engine is charging the starting battery enough to also provide more current to charge the house battery.

If the house battery was very much discharged, it could be that as soon as the house battery was connected, it dropped the voltage so far it cut out the relay.



If it was me, I would keep an eye on it.
__________________
Mike

"Free advice is worth what you pay for it. Sometimes.."
mikeme is offline   Reply With Quote
Old 07-22-2019, 11:01 AM   #14
SSTraveler
2014 LTV Unity Murphy Bed
 
SSTraveler's Avatar
 
Join Date: Jan 2014
Location: South Carolina
Posts: 1,544
Thanks: 651
Thanked 1,476 Times in 740 Posts
Default Re: Coach charging solenoid

My last long trip I realized my Isolator Solenoid (IS) wasn't working. I watched my Victron BMV-712 and noticed that the IS was only working intermittently. So I am replacing it with the Blue Sea ML-ACR a solid state more reliable unit. Here are some posts that may be helpful, https://sprinter-source.com/forum/sh...light=Blue+sea and https://sprinter-source.com/forum/sh...light=Blue+sea. It's an easy swap out once you find your IS and Isolator relay, if your Wonder is anything like the Unity (both under passenger seat).
__________________
SSTraveler
2014 Unity Murphy Bed/2014 MB Chassis
SSTraveler is online now   Reply With Quote
The Following User Says Thank You to SSTraveler For This Useful Post:
Danarbor (07-22-2019)
Old 07-22-2019, 11:55 AM   #15
hoosierrun
 
Join Date: Sep 2016
Location: Seminole, FL
Posts: 385
Thanks: 220
Thanked 136 Times in 109 Posts
Default Re: Coach charging solenoid

Quote:
Originally Posted by RV2019 View Post
The voltage on the large terminals match engine (12.8) and house (13.3) voltages with engine off.
Small wire is 0.

Engine on
Engine battery 14.32
House battery 14.48
Small wire 14.36

Now Iím lost. Seems solenoid is working.

Just started engine again and according to my VictronConnect smart bmv it shows charging at 27.9 amps 14.11 volts and 95% SOC. I had run the generator for about and hour and a half to charge batteries after we stopped.

Does this mean the solenoid has intermittent issues?

Running 2 6 volt agm batteries. Originals were 12v flooded.
It might. With dirty grayed contacts it could connect up sometimes but not other times. That is the way mine acted. It will only get worst if that is your problem.
__________________
2016 Leisure Travel Vans, Serenity
hoosierrun is offline   Reply With Quote

Thread Tools
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

Forum Jump



All times are GMT. The time now is 03:03 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.