Troubleshooting: UPS Alarms
Display Message | Meaning | Corrective Action |
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External DC Disconnect Switch | The external DC DISCONNECT switch | Close the external DC DISCONNECT switch. |
Open | tripped. Battery power is not | Check the fuse on the XR battery |
| available or the runtime is lower than | enclosure. If the fuse has blown, contact |
| expected. | APC Customer Support. |
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External Switch Gear | The external switch gear | See “How to replace a power management |
Communication Card Fault | communication card has failed. | peripheral” on page 18. |
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External Switch Gear | The system no longer detects an | Option 1: Ensure the external switch gear |
Communication Card Removed | external switch gear communication | communication card is installed properly. |
| card. | Option 2: Replace the external switch gear |
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| communication card. |
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Graceful Shutdown Initiated | A graceful shutdown or reboot has | No corrective action necessary. |
| been initiated from the display |
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| interface or other accessory. |
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High Isolation Transformer | The isolation transformer | Contact APC Customer Support. |
Temperature | temperature is too high. |
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Internal Communications Failed | One of the buses used for the | Contact APC Customer Support. |
| communication between the UPS |
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| modules has failed. |
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In Bypass: Hardware Fault | The system has transferred into | Contact APC Customer Support. |
| bypass because a fault has occurred. |
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In Bypass: Overload | The system has transferred into | Option 1: Decrease the load. |
| bypass because the load has | Option 2: Add a power module to the |
| exceeded the power capacity of the | system. |
| system. |
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In Bypass: | The system has been transferred into | Check for any problems with the system. |
| bypass due to user action. | Transfer the system to normal operation. |
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Input Voltage or Frequency | The frequency or voltage is out of | Correct the input voltage to provide |
Cannot Support Bypass | acceptable range for bypass. This | acceptable voltage or frequency. |
| message occurs when the UPS is |
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| online, and indicates that the bypass |
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| mode may not be available if |
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| required. |
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Intelligence Module Fault | The main intelligence module has | Replace the main intelligence module. See |
| failed and requires replacement. | “How to replace an intelligence module |
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| (MIM/RIM)” on page 18. |
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Load (kVA) Alarm Violation | The load has exceeded the user- | Option 1: Use the display interface to raise |
| specified load alarm threshold. | the alarm threshold. |
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| Option 2: Reduce the load. |
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Local | Internal communications in the | Contact APC Customer Support. |
Communication Lost | system have failed. |
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22 | Symmetra PX 160 kW 400 V Operation |