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Williams 1403621 Fuse
In a wall unit, the fuse behaves as a version of electrical protection in case of a sudden short or overload of the current. It is usually wise to find the cause when a fuse goes out in order for it to not happen again.
Main clues your Williams fuse will have to be replaced
- It is unable to power up even though 120V is coming in to the wall unit
- The fuse circuit appears charred and broken when initially viewed
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