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Old 10-09-2011, 12:19 PM   #1
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Relay Switch (Solenoid) Problem

Relay Switch (Solenoid) Problem

My 12 volt house power went out. Was able to trace the problem to the solenoid switch on the distribution panel located in the front bay below the driver side of the coach. It controls the on/off switch at the doorway to the coach. I have by passed the solenoid and that restored the power to the coach.

I was able to locate part LR9806CBIP which appears to be similar to the one I am replacing with the exception that it has a small circuit board ( with a red and white wire) that is connected to the small + connected on the front right and a white wire that extends and is connected to the small - connector on the front left. The old solenoid that is being replaced does not have that circuit board. It does have a red wire that connects to the small front right + connector and a purple wire that connects to the small - connector on the front left and that leads to the on/off switch at the doorway.

My question is if the new part LR9806CBIP is the right solenoid, will I need to connect the purple wire to it like it was connected on the old solenoid LR9806C.

Thank you for any advice as this web site has been invaluable in my efforts to located and solve this problem.

Bob (Retired Air Force)
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Old 10-09-2011, 03:16 PM   #2
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Hi Bob! Can't help on your problem, but I think you would have much better response if you post the questions over in the motorhome section. Not many folks hang around this new member area. Good luck!
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Old 10-09-2011, 09:41 PM   #3
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Welcome Bob! I am sure someone on here can help you. This is a real friendly and helpful bunch on here.
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Old 10-09-2011, 10:09 PM   #4
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Joe is right Bob. Send a pm to one of the moderators and ask them to move your post to the motorhome section and if you will give the year and make/model of your mh that would help also.
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Old 10-09-2011, 10:17 PM   #5
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Hi Bob and welcome to iRV2!

I have moved your thread from the New Members Check In to the Monaco Owners forum where you'll get many more expert views.

Best of luck

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Old 10-10-2011, 05:42 AM   #6
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Quote:
Originally Posted by rcote52738 View Post
Relay Switch (Solenoid) Problem

My 12 volt house power went out. Was able to trace the problem to the solenoid switch on the distribution panel located in the front bay below the driver side of the coach. It controls the on/off switch at the doorway to the coach. I have by passed the solenoid and that restored the power to the coach.

I was able to locate part LR9806CBIP which appears to be similar to the one I am replacing with the exception that it has a small circuit board ( with a red and white wire) that is connected to the small + connected on the front right and a white wire that extends and is connected to the small - connector on the front left. The old solenoid that is being replaced does not have that circuit board. It does have a red wire that connects to the small front right + connector and a purple wire that connects to the small - connector on the front left and that leads to the on/off switch at the doorway.

My question is if the new part LR9806CBIP is the right solenoid, will I need to connect the purple wire to it like it was connected on the old solenoid LR9806C.

Thank you for any advice as this web site has been invaluable in my efforts to located and solve this problem.

Bob (Retired Air Force)
Bob,

Welcome aboard. Spent a little time in the Air Force myself but did not retire from the service.

Most of us refer to the switch at the door as the Salesman switch because it is usually only used on the sales lots. The first time I lost 12 VDC and traced it to that solenoid, I took the heavy gauge cables off both terminals and joined them together with a bolt and nut. I taped them up with electrical tape and they have been that way for 4 years now. Anyone who owns a Monaco coach will experience the loss of 12 VDC power sooner or later and that solenoid is the cause 99% of the time. Most of us have bypassed it and leave it that way. If you feel you need to replace it, do so with a high current version used in marine applications. Hold on to your pocket book because the marine grade will set you back a few bucks.

I can't help you with your question about the circuit board, but if it is removable then take it off until the solenoid is in the same configuration as the one you are replacing.

Bob
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Old 10-10-2011, 02:31 PM   #7
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I also by-passed mine 4 years ago. Never used that cut-out anyway, so far no problems.
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Old 10-11-2011, 12:10 PM   #8
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a little confused here; is the switch a "solenoid"?
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Old 10-11-2011, 01:00 PM   #9
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a little confused here; is the switch a "solenoid"?
No, but the solenoid is a switch.

The switch being discussed is commonly known as the "Salesman's Switch". It provides the sales person a means to turn on the 12 vdc power at the entry way of the coach when it is being shown to a prospective buyer. Once the motorhome leaves the lot, the switch really has no practical purpose.

The solenoid is an electro-mechanical switch that is energized when the "Salesman's Switch" is turned on. Energizing the solenoid closes the connection between to heavy 12 volt positive cables and passes 12 volt DC current on to the 12 volt house lights and accessories.

When the solenoid fails there will be no 12 volt electricity to the house side of the coach. Rather than buy an expensive new solenoid most people opt to bypass it by connecting those two heavy positive cable together thereby bypassing both the solenoid and the salesman's switch.

I hope that clarifies it for you without it becoming more confusing.
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Old 10-11-2011, 04:46 PM   #10
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great! just where is the solenoid?
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Old 10-11-2011, 07:58 PM   #11
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I may be mistaken but I believe this is also known as the House Battery Disconnect Solinoid. The large B+ battery lead from the House Battery will go directly to this solinoid. The Battery Disconnect Switch (Salesman switch?) operates the solinoid. In 2005, the panel it is mounted on is called a 12VDC distribution panel. I suspect 2004 is the same.

Dave
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Old 10-11-2011, 10:28 PM   #12
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great! just where is the solenoid?
In my 2005 Beaver (also a Monaco product) it is located in the electrical bay forward of the driver's side front wheel well. Your Windsor is probably the same. If not my next suggestion would be to ask the above question in the Monaco Owners forum. Someone there will surely know.
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Old 10-12-2011, 03:10 PM   #13
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My unit has three power distribution panels. The 12 volt distribution for the Chassis is forward of the left front wheel in a dedicated bay. The primary distribution is on the left wall of the basement (behind a hinged door) forward of the right rear wheel (that's where my house disconnect solenoid is.) Then there is a 12 volt fuse panel in the bedroom next to the 120 volt panel.
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Old 10-13-2011, 08:55 PM   #14
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Thank you Bob,
I have by passed it like you described and I now have 12 volts back. The problem is the selonoid which is bad. I have ordered a new one and will install it when I get it but will probably stay with the by pass solution and will not worry about it going out. If I replace the coach, then I will configure it back to its original state.

Thanks again,
Bob
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