APC Smart-UPS Error Code F05

APC UPS Critical Fault

Model: Smart-UPS | Code: F05

Applicable Systems
Symmetra LX

Symptoms

The static switch has a hardware fault. The UPS cannot transfer between sources safely.

Possible Causes

  • Static switch SCR component failure
  • Static switch trigger circuit fault

Troubleshooting Steps

  1. Step 1: Check the UPS fault log for the specific static switch fault sub-code
    Detailed fault information is obtained
  2. Step 2: Contact APC support with the fault code for diagnosis
    Support confirms the faulty component

How to Reset

To reset: Power-cycle the UPS. If the error persists, contact APC support for repair.

Related APC Fault Codes

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Source: APC Smart-UPS User Manual, Schneider Electric/APC

Category: UPS