The stirrer fan located in the ceiling of the oven started to sparkle flames and melted the stirrer fan cover. I was wondering what the role of the fan is and how can I fix it.
Thanks in advance.
It's actually a stirrer. Its purpose is to scatter the microwaves to ensure even cooking, similar to the way a turntable does in other models. Having a stirrer instead of a turntable allows for a bigger dish.
The sparking is usually caused by deposits or grease or food debiris which heat, reheat and arc.
If the oven is used very long without the cover, that debris and grease can get onto the magnetron and ruin it.
You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383
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