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11-30-2022, 07:00 PM
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#1
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Member
Join Date: Jan 2021
Posts: 30
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Awning has 12 volts going out only 7 volts coming in
Anyone know why this is happening
On the way out the awning puts out 12 volts
On the way in only 7 volts and the awning barley even comes in
Any help would be great.
TY
Chris
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11-30-2022, 07:57 PM
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#2
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 12,565
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It doesn't take much power to extend an awning, take more to retract it.
I had a problem with mine, it's a One-Touch Awning Carefree of Colorado. They used a cheesy bayonet connector mounted on the side of the motorhome. Over time the contacts would corrode. I finally did away with the bayonet connector and solved the problem.
In your case I'd check all the connections and voltage coming into the control board. You may have to run a larger gauge wire to reduce voltage drop.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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11-30-2022, 08:19 PM
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#3
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Jun 2014
Location: Somewhere On the Road
Posts: 1,103
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Haven't seen that voltage difference before - how about running a jumper wire from the coach to the awning motor and see what you get?? May clearly rule-in-or-out the existing wire...
__________________
Steve
2015 Itasca Ellipse QD | 2014 Jeep Grand Cherokee
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12-01-2022, 01:14 AM
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#4
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Senior Member
Join Date: Jul 2014
Posts: 32,214
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My awning has the motor and roller out on the moving part. The wires are thin and run thru the edge of the material.
If you have this type of awning, voltage drop on rolling it in will be higher then rolling out.
The awning doesn't put out any voltage, it draws power. The more power it draws, the more voltage drop you will see. Long, thin wiring runs have higher voltage drop.
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12-01-2022, 09:41 AM
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#5
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Member
Join Date: Jan 2021
Posts: 30
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With only 7 volts awning coming in and 12 going out must be a wire is pinched I will probably take it I have a good RV repair guy here in Tucson
Thank You everyone
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12-01-2022, 10:09 AM
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#6
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Senior Member
Join Date: May 2018
Posts: 2,078
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Quote:
Originally Posted by twinboat
The awning doesn't put out any voltage, it draws power. The more power it draws, the more voltage drop you will see. Long, thin wiring runs have higher voltage drop.
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Exactly, you are experiencing voltage drop due to inadequate wiring or low battery. Have you tried it with the engine running? While plugged in with the converter charging the batteries?
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Brian, 2011 Winnebago Via Class A on Sprinter Chassis
Tucson, AZ
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12-01-2022, 10:11 AM
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#7
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Senior Member
Join Date: May 2018
Posts: 2,078
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Quote:
Originally Posted by clane
With only 7 volts awning coming in and 12 going out must be a wire is pinched I will probably take it I have a good RV repair guy here in Tucson
Thank You everyone
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I'm in Tucson also, would you mind sharing your repair guy's info in case I am ever in need? Thanks.
__________________
Brian, 2011 Winnebago Via Class A on Sprinter Chassis
Tucson, AZ
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12-01-2022, 10:26 AM
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#8
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Senior Member
Join Date: Jul 2014
Posts: 32,214
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Quote:
Originally Posted by clane
With only 7 volts awning coming in and 12 going out must be a wire is pinched I will probably take it I have a good RV repair guy here in Tucson
Thank You everyone
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A DC motor uses both wires in forward and reverse, the polarity is reversed.
It's not a pinched wire, if that was a thing, it would effect both directions.
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12-02-2022, 08:50 AM
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#9
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Senior Member
Join Date: Mar 2019
Posts: 1,102
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I have the same basic problem. In my case, it ts the relay soldered on the controller board.
How do I know this? - I switched the outgoing wires on the controller board for the door awning and the side awning. The side awning will work fine going through that relay. My theory is that the higher amperage draw of the side awning creates arcing that over the years has built up carbon on the contacts inside the relay - thereby reducing its ability to pass current.
I have new relays, but have not gotten around to replacing them yet.
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12-02-2022, 09:30 AM
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#10
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Member
Join Date: Jan 2021
Posts: 30
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RV repair guy
Quote:
Originally Posted by bigb56
I'm in Tucson also, would you mind sharing your repair guy's info in case I am ever in need? Thanks.
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Carls RV 520-889-9900
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12-02-2022, 09:31 AM
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#11
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Senior Member
Join Date: May 2018
Posts: 2,078
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Quote:
Originally Posted by clane
Carls RV 520-889-9900
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Thanks, I have shopped there. Great people.
__________________
Brian, 2011 Winnebago Via Class A on Sprinter Chassis
Tucson, AZ
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12-03-2022, 09:52 AM
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#12
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Moderator Emeritus
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 25,739
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Quote:
Originally Posted by twinboat
A DC motor uses both wires in forward and reverse, the polarity is reversed.
It's not a pinched wire, if that was a thing, it would effect both directions.
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Right. And the voltage drop is relative to the power draw. Most powered awnings extend out under spring or gas strut, so the motor merely freewheels to let it extend. Retracting requires overcoming the pressure that extended it, so the power draw is higher.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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12-04-2022, 11:39 AM
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#13
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Senior Member
Join Date: Nov 2018
Posts: 873
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Quote:
Originally Posted by twinboat
A DC motor uses both wires in forward and reverse, the polarity is reversed.
It's not a pinched wire, if that was a thing, it would effect both directions.
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A pinched wire would produce a dead short to the 12 volt line in one direction or the other, blowing a fuse. I don't really see a problem since the motor works harder to pull the awning back in. You can actually hear it labor more on the retract position.
__________________
2018 KZ 270thle
2015 Silverado.
2012 GL1800
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12-04-2022, 11:49 AM
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#14
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Senior Member
Join Date: Jul 2014
Posts: 32,214
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Quote:
Originally Posted by glwinger
A pinched wire would produce a dead short to the 12 volt line in one direction or the other, blowing a fuse. I don't really see a problem since the motor works harder to pull the awning back in. You can actually hear it labor more on the retract position.
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Not if it's pinched between non-conductive materials.
My point is pinching a wire does not slow the flow of electricity.
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