PowerWalker VFI 20000TP 3/3 BX, Руководство пользователя

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Please refer to “Light Reference Table” of this User Manual first and then conduct proper
treatment. If problems still exist, please record UPS model, serial number as well as pur-
chase date, symptom on fault, light condition, LCD malfunction or warning information.
Troubleshooting
Should maintenance prove necessary, the following steps should be followed:
1. Check if UPS input wiring is done properly.
2. Check if all air switches are tripped out.
3. Check if voltage input is within specified range.