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01-19-2016, 01:37 PM
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#1
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Junior Member
Join Date: Jan 2016
Posts: 3
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Coach battery not charging
We just bought our first Class A, a 1994 30 foot National Tropi Cal on a P32 chassis. For some reason, the main battery charges just fine but the coach battery does not. Is there a main fuse between the motor or alternator and the coach battery in the doorwell?
Any help would be much appreciated as I do not have a wiring diagram to guide me through this issue.
thanks
Michael
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01-19-2016, 01:49 PM
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#2
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Senior Member
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 19,925
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There might be a malfunctioning solenoid. The reason I say 'might' is I'm not sure what a 1994 National was capable of out of the factory. In a perfect world, any time a charging (+13.4 v) current was sensed from either house or chassis batteries, this solenoid would link the two groups together. As soon as the charging current isn't present, the solenoid disconnects the two battery groups. If you have a 'boost' switch on the dashboard for emergency starting, that switch usually triggers the solenoid. If you have a boost switch and it's not working, then track down that solenoid and replace or clean it. Good luck!
__________________
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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01-19-2016, 01:53 PM
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#3
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Senior Member
Monaco Owners Club
Join Date: Sep 2014
Posts: 4,569
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Just so everyone is on the same page. I'm confused easily ; )
Chassis batteries start the engine.
House Batteries for pretty much everything else.
Someone will likely be able to find the diagrams/schematics for you.
Good luck!
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01-19-2016, 02:08 PM
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#4
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by michaelabc
We just bought our first Class A, a 1994 30 foot National Tropi Cal on a P32 chassis. For some reason, the main battery charges just fine but the coach battery does not. Is there a main fuse between the motor or alternator and the coach battery in the doorwell?
Any help would be much appreciated as I do not have a wiring diagram to guide me through this issue.
thanks
Michael
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michaelabc
Which battery do you consider your "main" battery, the "chassis" battery or the "house" battery?
Mel
'96 Safrari
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01-21-2016, 06:33 AM
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#5
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Junior Member
Join Date: Jan 2016
Posts: 3
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The main battery is the chassis battery and the house battery is the for the coach and that is not charging. There is no boost switch on the dash and when I check the voltage on either side of the solenoid, it reads the same lower voltage than the chassis battery.
The chassis battery is higher at this point but when I measure the two sides of the solenoid they are both at the lower level (coach batter level). Is there a fuse somewhere between the solenoid wire in (red) and the alternator?
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01-21-2016, 06:39 AM
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#6
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Registered User
Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
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Do you know for a FACT that you have a bi-directional charging system?
If not there are devices that can be added that will keep all batteries fully charged whether you are hooked to shore power, generator power or have the engine running.
Dr4Film ----- Richard
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01-21-2016, 06:44 AM
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#7
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Senior Member
Join Date: Jul 2014
Posts: 35,424
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Quote:
Originally Posted by michaelabc
The main battery is the chassis battery and the house battery is the for the coach and that is not charging. There is no boost switch on the dash and when I check the voltage on either side of the solenoid, it reads the same lower voltage than the chassis battery.
The chassis battery is higher at this point but when I measure the two sides of the solenoid they are both at the lower level (coach batter level). Is there a fuse somewhere between the solenoid wire in (red) and the alternator?
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Look for another solenoid. You could be checking the disconnect solenoid.
If it's not working, you will see different voltages on each side.
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01-22-2016, 10:15 AM
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#8
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Senior Member
National RV Owners Club
Join Date: May 2013
Posts: 109
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You might want to check the GFI electrical outlets in the Bathroom sink and Kitchen areas. If they tripped you will not have power to outlets and the converter box. At least that is what happened in my MH, Hope that helps
Richard
__________________
2001 Fleetwood Discovery 38F, 2013 Honda CR-V, Roadmaster Falcon All Terrain Tow bar. Magalia, CA, iRV2 Supporter, Member FMCA
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01-22-2016, 10:34 AM
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#9
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Senior Member
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 19,925
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Quote:
Originally Posted by richs050
You might want to check the GFI electrical outlets in the Bathroom sink and Kitchen areas. If they tripped you will not have power to outlets and the converter box. At least that is what happened in my MH, Hope that helps
Richard
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We've been discussing 12 systems, I've not seen a converter/charger wired through a GFI, they are usually wired directly into the 120 breaker panel.
__________________
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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01-22-2016, 10:39 AM
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#10
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Senior Member
Join Date: Jul 2014
Posts: 35,424
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Quote:
Originally Posted by richs050
You might want to check the GFI electrical outlets in the Bathroom sink and Kitchen areas. If they tripped you will not have power to outlets and the converter box. At least that is what happened in my MH, Hope that helps
Richard
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That sounds different. The few converters I have seen, have their own circuit breaker in the panel.
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01-22-2016, 05:53 PM
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#11
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Senior Member
National RV Owners Club
Join Date: May 2013
Posts: 109
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My converter plugs in to the 110vac and that ac circuit as the same as the bathroom GFI plug. When the GFI trips, there is no 110v plugs on that side of the MH and the coach batteries do not get charged and go dead.
Richard 
__________________
2001 Fleetwood Discovery 38F, 2013 Honda CR-V, Roadmaster Falcon All Terrain Tow bar. Magalia, CA, iRV2 Supporter, Member FMCA
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01-22-2016, 11:27 PM
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#12
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,781
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Quote:
Originally Posted by richs050
My converter plugs in to the 110vac and that ac circuit as the same as the bathroom GFI plug. When the GFI trips, there is no 110v plugs on that side of the MH and the coach batteries do not get charged and go dead.
Richard |
Same as mine was before I put it on it's own breaker in the main breaker panel. Did that when I installed a 2000 watt inverter and sub panel to power selected items.
__________________
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
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01-23-2016, 06:14 AM
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#13
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by richs050
My converter plugs in to the 110vac and that ac circuit as the same as the bathroom GFI plug. When the GFI trips the coach batteries do not get charged and go dead.
Richard
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richs050
I suggest you correct that, (or have a electrician correct it).
Although it's not "dangerous" it could be "very inconvenient".
Mel
'96 Safari
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01-23-2016, 06:21 AM
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#14
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Senior Member
Join Date: Jul 2014
Posts: 35,424
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Quote:
Originally Posted by richs050
You might want to check the GFI electrical outlets in the Bathroom sink and Kitchen areas. If they tripped you will not have power to outlets and the converter box. At least that is what happened in my MH, Hope that helps
Richard
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Not doubting what you have, just wondering.
Being that your rig is a 2001, is your converter the original or possibly a replacement 3 stage model that is plugged in ?
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