APC Smart-UPS Error Code A022

APC UPS Major Alarm

Model: Smart-UPS | Code: A022

Applicable Systems
Symmetra LX

Symptoms

The inverter output voltage is too low. The UPS output is below the acceptable range.

Possible Causes

  • Inverter cannot sustain voltage under load
  • Inverter component degradation

Troubleshooting Steps

  1. Step 1: Check the UPS output voltage under load
    Output voltage drops under load
  2. Step 2: Reduce the load and check if voltage recovers
    Voltage recovers when load is reduced

How to Reset

To reset: Reduce the load or repair the inverter, then restart the UPS.

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

Category: UPS