Electric floor heat

April 03, 2012, 08:01:57 pm

I have a 07 Magna with electric floor heat( heated tiles) in both the main room and the bath area. Last summer we had a failure of the floor heat in the main salon. I was able to locate the wires that feed the mat under the tile. There is a yellow romex wire that terminates under the refig where there is a connector that joins the power source to the blue lines that feed the mat. Each blue line is labeled with a resistance reading that was determined when the mat was laid. The mat that is working properly has the the correct ohm reading of 39.7 Ohms. The mat that has failed goes to infinity therefore the loop is open or broken somewhere. Since this past summer we had a problem with the dish washer I believe that water on the floor may have shorted out the mat. Rather then randomly removing every tile in the coach I would like to begin around the the dish washer and look for the area where the blue feed cable attaches to the mat. Does anyone know where the connections were made? Is there a connector where the power line attaches to the mat that might have corroded? Is there anyone out there that may have some suggestions? Thanks,

John Bennett

jbennett2@...

Re: Electric floor heat

Reply #1 – April 04, 2012, 12:07:16 pm

Yahoo Message Number: 78399

John - I've had some trouble with those crimp connectors that allow modular assembly at the factory. In our case, not with floor heat but driver and passenger outlets. These are plastic square units with a clear side. An AC test probe (lights when it senses AC) is really helpful for diagnosis. In my case, someone (at the factory) jammed two conductors into the connector's V-block. Something for which these connectors aren't designed for. The second conductor worked loose creating an open circuit. Perhaps you are experiencing a similar problem. The AC sense light saved huge amounts of time and in seconds you can tell where power is without disconnecting any wiring. Good luck effecting repairs.

At 05:01 PM 4/3/2012, you wrote:

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