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08-23-2011, 09:38 PM
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#1
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Junior Member
Join Date: Aug 2011
Posts: 2
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I have 1993 Beaver Contessa where the coach batteries will not charge when main motor is running.
The coach batteries charge from the generator or shore power.
When the motor is running the boost solenoid is so hot you can't keep our hand on it.
When you push the boost switch on the dash the solenoid clicks.
Any ideas?
Thanks,
Siro
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08-24-2011, 02:37 AM
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#2
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Community Moderator
Gulf Streamers Club Country Coach Owners Club Appalachian Campers
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 8,263
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Hello Siro and  . We are glad to have you join us here and I am sure you will enjoy the website and forums. Good luck, stay safe and keep us posted.
It sounds like you may have a bad solenoid. When the two battery banks reach a significant voltage difference, measure exact voltages and then without being plugged into shore power or having the generator running, used the boost switch and check voltages again. If the solenoid is working the voltages should become the same indicating the solenoid is working. Based on the symptoms I think the solenoid could be bad; only proper troubleshooting will verify or not.
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Mike, Certified Master RV Technician
Amy, RV Merchandiser; Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser w/ Banks & 2 toads
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08-24-2011, 11:46 AM
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#3
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Junior Member
Join Date: Aug 2011
Posts: 2
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All fixed,
I measured the voltage between the terminals on the solenoid when it was activated and the volt meter measured about 4 volts, should have been close to zero volts if the solenoid was activated. Dissasembled the solenoid and found everything was corroded inside.
Cleaned the terminal and the shorting bar and everything is fine.
Great forum and thanks for all the help.
Siro
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08-25-2011, 02:10 AM
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#4
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Community Moderator
Gulf Streamers Club Country Coach Owners Club Appalachian Campers
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 8,263
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Measuring across the solenoid is easier but not knowing your skill level I was not sure you would understand if I went in that direction in my suggestion. Anyway I am glad to see you have found and repaired the problem. Good luck and keep us posted.
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Mike, Certified Master RV Technician
Amy, RV Merchandiser; Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser w/ Banks & 2 toads
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08-26-2011, 09:59 AM
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#5
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,572
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Quote:
Originally Posted by SOAV
I have 1993 Beaver Contessa where the coach batteries will not charge when main motor is running.
The coach batteries charge from the generator or shore power.
When the motor is running the boost solenoid is so hot you can't keep our hand on it.
When you push the boost switch on the dash the solenoid clicks.
Any ideas?
Thanks,
Siro
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I just replaced my solenoid. About $25 and <1 hour time.
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Wretched excess is just barely enough.
2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
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08-26-2011, 10:20 AM
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#6
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Senior Member
Monaco Owners Club
Join Date: Mar 2000
Location: Woodburn Oregon USA
Posts: 1,372
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The solenoid will be hot to the touch since it is a continous duty and picked all the time. Mine was the same way but was passing no voltage. You can see a picture of my disassembled solenoid here Dead Starting Batteries
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Brian, Loretta & Daisy (Golden Retriever)
2008 Holiday Rambler Endeavor 40 PDQ , ISL 400
2008 Ford Explorer toad
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