Thanks all. I will get sensors changed out and see if that resolves it before buying the test apparatus. I figure that the test apparatus may not catch sensor issues as it completely bypassed the Webasto controller.
Pulled out three sensors and ordered new ones. I know it is not the overheat fuse because it had been shorted. I have included pictures below. There is no inspection detailed enough that will catch something like this. The sensor is $30, so I don’t know why someone will bypass this important feature.
Will let everyone know of the outcome.
Regards, Shahzad Lateef
2003 Marathon H3-45, DS
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