Appendix 2 Problems and Solution In case the UPS cannot work normally, it be wrong in installation, wiring or operation. Please check these aspects first. If all these aspects are checked without any problem, please consult with local agent right away and provide below information. Product model name and serial number. Try to describe the fault with more details, such as LCD display info, LED lights status, etc. Read the user manual carefully, it can help a lot for using this UPS in the right way. Some FAQ (frequently asked questions) may help you to troubleshoot your problem easily. Possible No. Problem Solution reason Input power supply is not Utility is Measure if the connected; connected UPS input but the voltage/frequency voltage UPS is within the 1 low; cannot be window. The input powered if UPS input switch of ON. is switched on the UPS is not switched on. Utility The input normal breakers but Utility of the UPS Switch on the LED does are not input breaker; not 2 switched Make sure the on, and on; input cable is well the UPS input cable connected. operates is not well at battery connected mode The UPS Output does not Make sure the cable does indicate output cable is not well any well connected; 3 connected; failure, Switch on the Output but output output breaker. breaker do do not
Appendix 2 Problems and Solution In case the UPS cannot work normally, it be wrong in installation, wiring or operation. Please check these aspects first. If all these aspects are checked without any problem, please consult with local agent right away and provide below information. Product model name and serial number. Try to describe the fault with more details, such as LCD display info, LED lights status, etc. Read the user manual carefully, it can help a lot for using this UPS in the right way. Some FAQ (frequently asked questions) may help you to troubleshoot your problem easily. No. Problem Possible reason Solution 1 Utility is connected but the UPS cannot be powered ON. Input power supply is not connected; voltage low; The input switch of the UPS is not switched on. Measure if the UPS input voltage/frequency is within the window. if UPS input is switched on 2 Utility normal but Utility LED does not on, and the UPS operates at battery mode The input breakers of the UPS are not switched on; input cable is not well connected Switch on the input breaker; Make sure the input cable is well connected. 3 The UPS does not indicate any failure, but output do not Output cable does not well connected; Output breaker do Make sure the output cable is well connected; Switch on the output breaker.
YDC3300(50~180k)(1.0).docx