That's unfortunately true, Rob. If I look back at my mother's old gas range, made by a company called Chambers, reliability problems were virtually non-existent. The same cannot be said, however, for today's electronics-laden appliances.
You are right about the whole unit not being protectable with GFI. The 110 VAC fan makes it unfeasible to protect with a single GFI device. You are also 100% correct that an internal GFI on just the 220 VAC burners would work well, but how would you package it? No one would want customers calling repairers to reset the internal GFI.
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