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Your cart is empty.This is a Grainfather factory replacement part, the PUSH BUTTON thermal reset switch for the Grainfather S40 series boilers. This is the most common point of failure for most electric boilers. When the temp of your boiler bottom hits 170C a functional switch will blow and your boil is done. The unit won't heat until it cools off a little and the reset on this switch is pushed.
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