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07-09-2017, 11:21 AM
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#1
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Senior Member
Join Date: Feb 2014
Location: West Monroe, LA
Posts: 240
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House Batteries not charging on shore power but do with generator.
Wondering if this is a bad charging switch or could low/bad batteries hamper the switch. From my reading on electrical issues with this -the generator is the primary and the shore power is the secondary charge/power source for the coach. Could the switch be stuck or bad.
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07-09-2017, 11:23 AM
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#2
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Senior Member
Join Date: Feb 2014
Location: West Monroe, LA
Posts: 240
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And yes there is power to the 50 amp service. 120 on both legs.
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07-09-2017, 11:41 AM
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#3
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,396
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Auto transfer switch?
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand! 
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07-09-2017, 11:46 AM
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#4
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2010
Posts: 1,799
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Does anything else in the coach work when the genny is off? Microwave, etc. Sounds like a bad transfer switch but it still could be supplying 1/2 of the panel with shore power.
__________________
Scott Brownstein
Palm Island, Florida
2015 Georgetown 335DS
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07-09-2017, 12:02 PM
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#5
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Senior Member
Join Date: Feb 2014
Location: West Monroe, LA
Posts: 240
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Quote:
Originally Posted by Unplanned
Auto transfer switch?
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Yes
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07-09-2017, 12:06 PM
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#6
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Senior Member
Join Date: Feb 2014
Location: West Monroe, LA
Posts: 240
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Quote:
Originally Posted by Sbrownstein
Does anything else in the coach work when the genny is off? Microwave, etc. Sounds like a bad transfer switch but it still could be supplying 1/2 of the panel with shore power.
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I got 0's showing on my AC panel on shore power but normal with the generator.
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07-09-2017, 12:07 PM
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#7
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Senior Member
Country Coach Owners Club
Join Date: Jan 2006
Location: Northern California
Posts: 5,868
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The auto transfer switch could be stuck. Disconnect all power sources then open it up and clean/tighten the connectors.
(Or tap the box with a hammer first to see if it frees up.)
My Freedom 25 Inverter also has a transfer switch breaker button that could be popped.
__________________
Dean
1995 38' CC Magna #5280 **** Sold after 21 years of enjoyment.
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07-09-2017, 12:07 PM
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#8
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Senior Member
Join Date: Feb 2014
Location: West Monroe, LA
Posts: 240
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I never hear the transfer switch kick over to shore power.
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07-09-2017, 12:21 PM
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#9
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2010
Posts: 1,799
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The transfer switch is stuck in the generator position. You can open it and see why. Either welded contacts, mechanical interference or something. You can manually wire around it so that you can have shore power or generator...but not both.
Relatively easy to do.
__________________
Scott Brownstein
Palm Island, Florida
2015 Georgetown 335DS
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07-09-2017, 02:26 PM
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#10
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Senior Member
Join Date: Feb 2014
Location: West Monroe, LA
Posts: 240
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Quote:
Originally Posted by Sbrownstein
The transfer switch is stuck in the generator position. You can open it and see why. Either welded contacts, mechanical interference or something. You can manually wire around it so that you can have shore power or generator...but not both.
Relatively easy to do.
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I've been down that road before and ordered a new transfer switch from CC. One of the 50amp house legs burned up. No house air for our first trip. Not good. This is different, every works on generator and even inverter mode except AC. Is there a different switch for charging.
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07-09-2017, 11:28 PM
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#11
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,396
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Another thing to look at is the connections in the transfer switch and also the breaker panel. They have a habit of loosening off as the vibrations of travelling down the road shake them around. Most RV's use regular house wiring connectors, and these do not stand up well to the punishment we put them though driving over many miles.
Good Luck, and Happy Glamping.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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07-10-2017, 06:14 AM
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#12
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Senior Member
Join Date: Feb 2014
Location: West Monroe, LA
Posts: 240
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Quote:
Originally Posted by Unplanned
Another thing to look at is the connections in the transfer switch and also the breaker panel. They have a habit of loosening off as the vibrations of travelling down the road shake them around. Most RV's use regular house wiring connectors, and these do not stand up well to the punishment we put them though driving over many miles.
Good Luck, and Happy Glamping.
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I'm also going to check the 50amp Male plug by checking current at the surge protector and if necessary the transfer switch. Thanks everyone!
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07-11-2017, 08:17 AM
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#13
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Senior Member
Join Date: Jul 2016
Posts: 140
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I am having the same type of problem. Yesterday while plugged into shore power the house batteries were not being charged. I was getting a low battery warning. On my coach there are 2 8D batteries for the engine and 2 8D for the coach. Where would the most likely place for this transfer switch be located? In the basement there is a electrical room with the panels and the inverter/ converter Is this where that switch might be? What do they look like ?
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07-11-2017, 08:28 AM
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#14
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Senior Member
Join Date: Feb 2014
Location: West Monroe, LA
Posts: 240
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Quote:
Originally Posted by Bootjack
I am having the same type of problem. Yesterday while plugged into shore power the house batteries were not being charged. I was getting a low battery warning. On my coach there are 2 8D batteries for the engine and 2 8D for the coach. Where would the most likely place for this transfer switch be located? In the basement there is a electrical room with the panels and the inverter/ converter Is this where that switch might be? What do they look like ?
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That's where mine is. I've spent Time in there already. Good thing I'm still nimble as a cat squirrel!
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