pholland

Rich, From your information and someone on the Escapees forum, I called Winnebago tech support to see what they could add. The tech agreed that it does sound like the solenoid has developed a short and that the fuse that is blowing is connected to the switch that controls the solenoid. I took a copy of the wiring diagram and a picture of the solenoid to a local RV repair shop. He also agrees that it is the solenoid and will order one. I will have them install it and keep the old one. I will test it as per your post and post the results here. Thanks again for the help. I didn't want to walk into a repair shop and say I have no power and hand over my credit card. Pat.

Rich, The fuse blows when I turn the disconnect switch to the on position. I hear a click, once, and then the fuse is blown. I had one overhead LED light turned on to see if it flashed, but nothing. The switch is not like a light switch that has definite on and off positions. It rocks to the on position and then returns to a middle position like you are pushing against a spring. Same way with the off position. It has a small light in the rocker part that lights when the 12V power is on. Testing with a vom is difficult as they mounted the solenoids at the back of a small storage bin. It is arms reach with one arm for me. To get to them I might have to disasemble the whole bin. This is something I think I will take to a Tech as they might be able to replace whats there with something that dosen't have the unnecessary complexity this setup has. A short in the solenoid seems to be the answer. Thanks, Pat.

Here is a link to the detail on Winnabago's website. http://www.winnebagoind.com/diagram/2010/10_wire_173846.pdf . The first page gives an error message. Cancel that and scroll down to the bottom page. The solenoid on the left is to connect the coach batteries to the chassis battery for starting. The solenoid on the right is Is the coach battery disconnect. It dosen't have a brand name on it. It has 01-00055-000 21009 B. D. Relay on it. It has the two large cables on the side lugs and two small terminals in the front with wires going into the harness.These two small terminals are not hot at this time. It also has two fuse holders on either side at the top that are marked 7 & 15 and these numbers are inside triangles. 7 is the always hot side of the solenoid and the 5 amp fuse that is blowing. Both of these wires also go into the harness. All the small wires are the same yellow color. The batteries were outgassing as the solar charger was at max voltage just finishing the charge cycle. I had only removed the caps from these two batteries when the propane alarm went off. I have done this 15 or 20 times since buying the MH new. The other four batteries are AGM as they are in the MH and under one of the seats for the booth dinette The battery voltage is not any different from what I have measured in the past at the different steps in the charging cycle. Solar charger is a Blue Sky with 270 watts of panels. I disconnected the propane alarm and changed the fuse. It blew again when I turned the disconnect switch on. The charger/inverter is a Parallax Power Supply series 7300, model 7345. What the wiring drawing dosen't show you is that these solenoids are at the back of a small storage compartment. Arms length away, so it makes it tough to even see whats there. My guesses are that it is 1) a fused relay that is on top of and part of the solenoid and replacement of the solenoid is required or 2) it is a bad control switch and I need to replace it. This a switch that has eight wires connected to it.???. Four white and four yellow.??? Everything was fine until I turned the switch off. Frustrating. Thanks for your time. Pat.

While checking the water level in my batteries in the stepwell I set off the propane detector for the first time after three years of ownership. I didn't know it was that LOUD. I turned off the coach battery disconnect switch also in the stepwell to stop the alarm. After I put the caps back on the batteries and cleared the air of the hydrogen, I turned the battery switch back on and nothing. No power to the 12v system. I located the disconnect solenoid and started checking voltage with a meter. Power to the solenoid but not through. No surprise there but I found two 5 amp blade fuses on top of the solenoid and they seem to be part of it.. One on either side of the power. The fuse on the hot side was blown. I replaced it and tried to turn on the power at the switch and heard a click. The fuse blew. I tried again. Blown fuse. This fuse is hot from the main cable coming to the solenoid and the out side is a yellow wire about 16 or 14 gauge going back into the bundle of wires. The information I can find about this electrical system shows a diagram of the solenoid with the fuse holders on Winnabago's website but no mention as to what this circuit controls. I part time with my motorhome and it has been parked for several months. I don't normally turn off the battery disconnect when stored as I have solar panels and they keep every thing charged. It has been turned on for about two years. I pulled the battery disconnect switch out from the wall thinking I might be able to test the switch. It has 8 wires connected to it. 4 yellow and 4 white. Thanks guys. I can rewire a house or a motorcycle but they use different colors. So I what I am asking here is has anyone had this problem before? I can be a parts swapper but I don't understand this system and could swap out much money without understanding the fix. If I was camped way out on BLM land I might be tempted to jump around the solenoid but the fuse is blowing for a reason, but one I can't get. The motorhome is a 2010 Winnebago Access 24V built on a 2009 Ford E450. Pat Holland. Redwood City, CA