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SRT 8 or 10kVA reports Error P.11 or DC Bus Soft Start or event codes 124/125

Fecha de publicación: 27 August 2020

Issue: The UPS reports P.11 or DC Bus Soft Start - event 124/125



Product Line: SRT 8-10kVA Models 

Resolution:
Clear the Alarm. Turn the output ON again. If the problem persists, Brain dead the UPS. If the alarm reoccurs, perform a UPS Firmware upgrade to the latest 04.7 revision that addressed these issues. For complete upgrade instructions please refer to FA164737.
 
Release Notes (UPS 04.7):
========================
1. Improved system performance of transitions between Online and Bypass operation modes.
2. Improved system behaviour for three phase input configurations to reduce transitions to battery under certain input feed conditions.
3. Improved system behaviour to eliminate false detection of DC bus under voltage alarm under certain conditions.
4. Improved system handling for certain AC input conditions during system start-up.

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