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Old 09-06-2012, 07:05 PM   #21
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I have checked the Evans site and they sell a replacement vacuum switch , looks like fixings to rear of panel is a match , now waiting on Evans to find out if it would work
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Old 09-06-2012, 08:13 PM   #22
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Are you absolutely sure it's the control head? The most common failure point of these systems has been leaky vacuum hose connections. They start to get brittle and crack where they are attached to the various actuators. Your system is a few years older than several that have had failures (mine included).

The one that usually fails is the connection to the actuator that controls/modulates the hot water. On the under hood side of the dash, look for a green vacuum line attached to a valve actuator with 2 hot water hoses attached. Look very closely where the vacuum line attaches to the actuator - you may find a split hose.

Take a look at the picture on this page...

It seems to happen more on the diesels, but I believe you have the same SCS system.
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Old 09-06-2012, 08:30 PM   #23
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I agree with tomsm, I have had several vacuum hose fittings crack over the years. What are your symptoms?
If you do get a switch from Evans make sure they guaranty it to work on you coach. I still think you have SCS unit and the Vacuum Logic Flow and Diagram to not match.
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Old 09-06-2012, 09:18 PM   #24
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Quote:
Originally Posted by grtharris
I agree with tomsm, I have had several vacuum hose fittings crack over the years. What are your symptoms?
If you do get a switch from Evans make sure they guaranty it to work on you coach. I still think you have SCS unit and the Vacuum Logic Flow and Diagram to not match.
No , you guys are right , this SCS unit is an exact match , I plan to buy some hose and rubber elbows if I can find them ( any ideas) and start replacing the ones I can reach before buying a new switch .
Anybody have any idea where I could find the PVC tubing and rubber elbows
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Old 09-06-2012, 09:34 PM   #25
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Quote:
Originally Posted by jimmyjnr View Post
Anybody have any idea where I could find the PVC tubing and rubber elbows

Probabably standard hose & fittings.. NAPA, Autozone, Carquest, ETC. should have it.
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Old 09-07-2012, 08:19 AM   #26
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Winnebago said it is SCS which is now victory climate systems .
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Old 09-07-2012, 08:32 AM   #27
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Emailed victory to check if switch is available once I have confirmed lines and connectors are ok . Thanks again for everyone's help and please keep the ideas and info coming
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Old 09-08-2012, 07:03 PM   #28
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Check most of the lines , it appears that the fittings are heat sealed onto the PVC lines , starting to return to the switch
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Old 09-12-2012, 06:44 PM   #29
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Ordered a new switch and one way check valve ( located on bulk head ) took a while to find part number for switch . Will report back when fitted , fingers crossed
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Old 09-20-2012, 05:36 PM   #30
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New switch and check valve fitted , test will be 2 weeks when we move , thanks to everyone for help and advice
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Old 10-09-2012, 04:46 PM   #31
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Yes it's working , may have problem with fan now ( squeaky ) thanks to all for your help
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