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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > 2006 Sunova 12V ground problem.

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Bikeboy57

Inverness, FL

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Posted: 10/01/21 12:27pm Link  |  Quote  |  Print  |  Notify Moderator

Physically disconnect the dead house batteries. If you somehow have them connected through a merge or combine switch then the charged chassis batteries will behave with all the symptoms you describe.


Richard and Rhonda
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Subaru Outback toad

enblethen

Moses Lake, WA

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Posted: 10/01/21 01:21pm Link  |  Quote  |  Print  |  Notify Moderator

Not expensive!
De-OX


Bud
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MountainAir05

New Mexico

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Posted: 10/01/21 03:29pm Link  |  Quote  |  Print  |  Notify Moderator

enblethen wrote:

Not expensive!
De-OX


Thanks Bud, this is what I base my comment on. this is

enblethen

Moses Lake, WA

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Posted: 10/01/21 04:57pm Link  |  Quote  |  Print  |  Notify Moderator

Ilsco product is good especialy in the aluminum conductor industry.
I like the Gardner Bender compound for many metals includine aluminum, copper, lead and steel

Rolin

Oregon

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Posted: 10/04/21 06:57pm Link  |  Quote  |  Print  |  Notify Moderator

Got back to MH today. I think the problem was the combine switch. Got the Engine running. The house batteries were totally discharged. I think they are toast.

The converter is still not charging the house batteries. The house batteries do charge when the engine is running. Need to check the converter but can't find it. The MH manual shows what it looks like and its a 7300, but does not give a location.

Sort of like an Easter egg hunt. Its a pretty large egg---shouldn't be that hard to find.

enblethen

Moses Lake, WA

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Posted: 10/04/21 07:02pm Link  |  Quote  |  Print  |  Notify Moderator

Locate your 120 volt circuit breaker panel. The 7300 type converters are located in the lower section of the breaker panel.

Rolin

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Posted: 10/07/21 09:23am Link  |  Quote  |  Print  |  Notify Moderator

I am helping a friend so I am not real familiar with this MH.

Located the 120v panel and checked all the breakers. Found that the Converter is located next to the refrigerator but need to put the slide out to access it.

Further testing indicates that the generator (which we can start after installing new batteries) will does not provide AC to outlets. This is getting more strange the more I investigate.

enblethen

Moses Lake, WA

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Posted: 10/07/21 09:35am Link  |  Quote  |  Print  |  Notify Moderator

Generator should go through an automatic transfer switch, Was the rig connected to shore power while testing genset output? It should not be.
Is the rig equipped with an inverter? It may feed some receptacles. The feed through function may not be working or breaker tripped in it.

MountainAir05

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Posted: 10/07/21 09:52am Link  |  Quote  |  Print  |  Notify Moderator

Rolin wrote:

I am helping a friend so I am not real familiar with this MH.

Located the 120v panel and checked all the breakers. Found that the Converter is located next to the refrigerator but need to put the slide out to access it.

Further testing indicates that the generator (which we can start after installing new batteries) will does not provide AC to outlets. This is getting more strange the more I investigate.


ensure that the breakers on Generator are on and have been reset.

Rolin

Oregon

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Posted: 10/07/21 06:15pm Link  |  Quote  |  Print  |  Notify Moderator

Ok, The generator problem was a user mistake....on Winnebago you have to plug the power cord into the AC plug next to the generator, then there is a switch from shore power to generator. Its not my MH so still learning.

Found a ground wire from the converter to the frame that was loose, cleaned and tightened but still no charge to the batteries. At this time planning to use an external battery charger/maintainer until the converter problem is fixed.

On the 2006 Winnebago Sunova the converter is inside a hollow space beside the fridge, mounted against the inside wall. You can only see/access it if you remove the cold air return panel to the furnace and a black DC breaker panel. Well hidden.

* This post was edited 10/08/21 10:24am by Rolin *

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