Hi, I have a Wolf in-wall electric oven DO30F/S that is not heating up on the top oven during bake mode: baking takes 20 minutes to get to 150 degrees, also, broil doesn't work at all. the bottom over seems to be working fine - so I thought.
So I acquired the service manual and went to troubleshooting. I have found that the on-board diagnostics for continuity report that the upper inner bake element and broil element don't work, as well as the lower inner bake element. So I went about testing - per the manual - the continuity from the output of the relay board. From there I get both upper and lower inner bake elements have no continuity, but the upper broil DOES have continuity.
So, what do I conclude from this - that i need new bake elements for upper and lower, but that my broiler issues may stem from a non-functioning relay board or controller? Something else?
I also have a question regarding the high-limit switch (or thermal limiter). The diagnostics say the following:
"...if the technician DOES NOT get an ohm reading from the DLB lead to all of the element leads, then, there is a problem with the High Limit"
Now I took that to be a poorly worded statement saying that if ALL continuity tests fail - it might be the high limit - but if some work, it isn't. My buddy helping me took that to mean that if ANY continuity tests fail then it may be the high limit.
We took it out of the equation by testing the continuity from output end of the high limit switch and got the exact same results as when it was included. This tells me that there is no high limit issue. But I could be wrong. Can the high-limit cause only selected elements to fail? I would think it was an all-or-nothing proposition.
Lastly, if it is new bake elements that are needed, where would I find those.