RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > National RV Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 10-18-2009, 10:06 AM   #1
Junior Member
Join Date: Dec 2008
Location: California
Posts: 28
Emergency Start system & Circut board

In snooping recently I noticed that my Emergency Boost cyllenoid was warm (in the closed position) most of the time. I have checked it on the generator, plugged into 50a, Engine running.Batteries charged, etc. So in most cases the cyllenoid is in the closed position (Yellow wire is hot). Both black ground and yellow 12v wires go to the large circut board next to the cyllenoid. I disconnected the ground and the cyllenoid opened up. But when that cyllenoid is opened there is no cross charging. If the engine is running only the engine batts charge. SO how does the circut board work?? And if the cylenoid is closed most of the time when does it open to protect the 2 systems from complete discharge? I checked 2 other newer Dolphin's and found the same issue. I checked the wireing diagram and that cylenoid seems to be the ONLY link between both 12v systems. How does it work?

03Dolphinlx 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 10-18-2009, 08:23 PM   #2
Senior Member
National RV Owners Club
Workhorse Chassis Owner
Join Date: Oct 2004
Location: Scottsdale, AZ
Posts: 1,485
That circuit senses both coach batteries and chassis batteries. If charging is occurring as a result of shore power or generator running, it will activate the solenoid to charge the chassis battery once the coach battery is above about 13.2 - 13.4 volts. Similarly, when traveling or just running the engine, the solenoid again will activate after the chassis battery becomes greater then 13.2 - 13.4 volts. The solenoid deactivates when the connected battery voltage drops below some level such as around 12.7 volts. This prevents the chassis battery from being drained by the coach.

The solenoid feels warm when ever either charging system is powered on and working properly.
2003 34' Dolphin 5342, W22, UP, UPGBrake, F and R Track Bars, Rear IPD sway bar, Koni FSDs, Safe-T-Plus, Scan Gauge II.. 2004 Jeep Liberty, Blue-Ox Adventa..
M&EM 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
Battery Interconnect (Emergency Start) stays energized gorwig RV Systems & Appliances 8 08-23-2012 10:13 AM
Problem with Emergency Air Brake System MikeandClaudia MH-General Discussions & Problems 6 11-02-2009 03:10 PM
2005 Dolphin Bedroom Slide-out - AL-KO new slideout system problem donhaus National RV Owner's Forum 0 09-22-2009 09:55 PM
Power Gear leveling system mrschwarz Winnebago Industries Owner's Forum 4 09-19-2009 12:07 PM
Energy Management system board failure Party Barge Winnebago Industries Owner's Forum 2 08-21-2009 12:02 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:51 AM.

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