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Q : When the UPS triggers an EPO alarm and enters EPO mode, how to troubleshoot the problem?
A: 1. Hardware Check:
① Verify if the EPO button or dry contacts have been manually operated;
② Check if J4-1 and J4-2 on the dry contact board are shorted, and whether the shorting caps are loose or fallen off;
③ Check if the EPO button is working properly, whether it is stuck, or if it malfunctions when pressed.
2. Software Check: Connect to the MTR software, find "ServSetting" - "Customization" - "CustomCode";
① Check the "LocalEpoDisable" function. If the alarm disappears, it indicates the dry contact board is damaged;
② Check the "RemoteEpoDisable" function. If the alarm disappears, it indicates the button board is damaged;
③ If all of the above are disabled and the alarm does not disappear, it indicates the monitoring board or control board is damaged.
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