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Williams 4007732 Fuse
In a wall unit, the fuse operates as a type of electrical protector in the rare circumstances of an electrical short or possible overloading of the electrical current. It is always in your best interest to seek out the reason a fuse blew so you know if something is really wrong.
Major symptoms the internal fuse needs replacing
- The unit will not turn on even though power is arriving into the system
- The fuse circuit appears charred and probably blown at first glance
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