Staff Answer
Sep 28, 2026 - 06:23 AM
On the 3163, the wires between the selector switch and the thermocouple interrupter are a very common cause of it not staying lit, even with a new thermocouple. The 628119 wire kit has better-insulated ends to fix this, and it's in stock. If that doesn't do it, the relighter board is next, but the 633326 is discontinued now.
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