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Open Roads Forum  >  Class A Motorhomes

 > coach battery switch

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richard_123

new bern, nc

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Posted: 05/23/12 09:24pm Link  |  Print  |  Notify Moderator

what would cause the coach battery switch not to turn off whe I push the toggle to off?

pianotuna

Regina, SK, Canada

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Posted: 05/23/12 09:31pm Link  |  Print  |  Notify Moderator

Hi,

Relays can fail. I'd be glad it failed in the "on" position.


Regards, Don
Full Time in a Kustom Koach Class C 28'5", 256 watts Unisolar, 875 amp hours in two battery banks 12 volt batteries, Magnum 3000 watt PSW inverter.

rvten

Crossville,TN

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Posted: 05/23/12 09:35pm Link  |  Print  |  Notify Moderator

How do know it did not turn off the batts?
If plugged in to shore power. Converter still gives you 12 volt.


Tom & Bonnie
Crossville, TN.
Aspect 29H 2008 Type C
Ford Flex SEL 2010
There is NO B+


richard_123

new bern, nc

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Posted: 05/24/12 05:31am Link  |  Print  |  Notify Moderator

If the coach battery relay has failed, if i unplug from shore power i should not be getting any power to the 12v items, correct?

sailor_lou

Connecticut

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Posted: 05/24/12 05:51am Link  |  Print  |  Notify Moderator

richard_123 wrote:

If the coach battery relay has failed, if i unplug from shore power i should not be getting any power to the 12v items, correct?


As with most things with RV's, it depends on the manufacturer. On my previous rig (97 Winne Vectra) all the 12 VDC loads were de-energized with the Master Switch solenoid. However, on my current rig some of the 12 VDC loads (steps, levelers, slides, smoke & CO detectors) remain powered up unless I pull the fuses. The remaining loads (lights, control power to the fridge, furnace & A/C, etc) are tied to the Master Switch solenoid.

Just to add to the confusion, I have some loads (dash radio & outlets) that are powered from the chassis battery, which are not impacted by the solenoid.

Probably the best indicator is your interior lights because most likely they are powered through the solenoid.

Lou
05 Travel Supreme Envoy

1995brave

San Antonio, TX

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Posted: 05/24/12 06:32am Link  |  Print  |  Notify Moderator

Check the fuses on the bottom of the solenoid. Check for 12 volts on the terminals for turning on and off. While by the solenoid have someone push the button for turning the battery on/off and listen for the clunk of the solenoid energizing and de-energizing. Remember the solenoid only needs a quick 12 volts to latch or unlatch the solenoid. If it seems to be working but still not turning the battery off, it could be arced contacts in the solenoid. Most can be taken apart and cleaned up.

zman-az

Northern AZ

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Posted: 05/24/12 01:52pm Link  |  Print  |  Notify Moderator

richard_123 wrote:

what would cause the coach battery switch not to turn off whe I push the toggle to off?


Are you still plugged into shore power? What Model and year is your coach?





Clay L

Palisade CO

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Posted: 05/24/12 10:44am Link  |  Print  |  Notify Moderator

Are you saying that the switch does not disconnect the batteries when the switch is pressed to OFF or that the switch won't stay in the OFF position when pressed?

That switch on many motor homes is a momentary switch and returns to the center position when released.


Clay (WA5NMR), Lee (Wife), Katie & Kelli (cats).

Fixed domicile after 1 year of snowbirding and eleven years Full Timing in a 2004 Winnebago Sightseer 35N, Workhorse chassis, Honda Accord toad

richard_123

new bern, nc

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Posted: 05/24/12 04:28pm Link  |  Print  |  Notify Moderator

I am saying that the switch green lite does not go out when the switch is pressed to OFF.

That switch on many motor homes is a momentary switch and returns to the center position when released.

Yes the switch retuns to neutral when release, but should not the green lite on the switch go out after pressing the off side of switch?

The MH in question is 2009 Winnebago 35Z adventurer

Clay L

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Posted: 05/24/12 04:38pm Link  |  Print  |  Notify Moderator

My particular switch does not have a green light but it seems logical that it would go out.
If you are unplugged from shore power and have lights or other 12 volt items working when the switch is pressed for off then I would say there is a problem.

If you do have a solenoid issue I can post some diagrams that may be helpful.

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