Wiring Fault light
You can download the manual from the link below:
http://www.sourceresearch.com/cyberpower/cyberpower-pdf.cfm?PdfPage=625_Manual.pdf
The "wiring fault" could be serious, as per manual:
"This LED indicator will illuminate to warn the user that a wiring problem exists, such as bad ground, missed ground, or reversed wiring. If this is illuminated, user is advised to disconnect all electrical equipment from the outlet and have an electrician check the outlet to insure proper ground."
I would turn the UPS off, unplug all equipment, wait 10 seconds, reset the circuit breaker (if tripped) and turn the unit on.
If you still have an issue then it's probably fried! Have you had any thunder storms or electrical power outages recently? Check your house insurance because it may cover a replacement unit.
Please update the question & let us know if the information given was useful to you - Good Luck!
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