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White-Westinghouse WAC083K7A4 Fuse
In a wall unit, the fuse serves as electrical defense during the occurrence of a short or any overloading of the current. It is wise to figure out the main reason a fuse blew so you know if something is really wrong.
General indicators that your the main fuse will have to be replaced
- The interior fuse looks blackened and probably blown when initially viewed
- It will not power on even though 120V is arriving into the system
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