Alpha FXM Series UPS reports UPS Battery Breaker in the System Errors


  • VFC-3000 reports that the UPS has a Battery Breaker error in the System Errors. 
  • UPS (Uninterruptible Power Supply) shows a Battery Temp Sensor Error. 
  • Input/output voltages of UPS are correct.
  • Controller says Battery Breaker Open. UPS says Temp Probe Unplugged


  • VFC-3000 Controller
  • Alpha FXM 650 or 2000 UPS


  • The temp sensor of the UPS is unplugged.  The VFC-3000 interprets this error as an error with the battery breaker.


  • Plug in the temp sensor and reset the controller.

KB ID: DD3498345

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