Site Wiring Fault
CyberPower UPS
Severity: CriticalWhat Does This Error Mean?
CyberPower UPS site wiring fault means the UPS has detected a problem with your wall outlet — a missing ground, reversed polarity, or open neutral. This is an electrical safety issue. Move the UPS to a different outlet and call an electrician to inspect the faulty one.
Affected Models
- CyberPower CP series
- CyberPower BR series
- CyberPower OR series
- CyberPower PR series
Common Causes
- Missing or broken earth/ground wire at the wall outlet
- Live and neutral wires reversed at the outlet
- Open neutral — neutral wire disconnected at outlet or junction box
- Extension cord with faulty or missing ground wire
- Older building wiring without a ground wire (2-pin outlets)