overload” The UPS output is in short Buzzer long beeps, LCD Make sure the load is not in short 11 display “output short circuit circuit, and then restart the UPS. circuit” The module is not inserted Pull out the module and insert The LED of the Module 12 with RED light properly. properly. Set the UPS working mode to Single The UPS is set to ECO mode, Module type(non-parallel) or to reset The UPS only works or the transfer times to 13 on bypass mode the times of transferring to bypass or bypass mode are limited. re-start the UPS Battery switch is not properly Close the battery switch; closed; Change the fuse; 14 Cannot Black start Battery fuse is not open; Recharge the battery Or Battery low Buzzer beeps Consult with your local agent for continuously and LCD UPS is out of order 15 indicates Rectifier fault repair or output fault Appendix 4 RS232 communication port definition Definition of Male port： Connection between PC RS232 port and UPS RS232 port PC RS232 port UPS RS232 port Pin 2 Pin 2 UPS send，PC receive Pin 3 Pin 3 PC send，UPS receive Pin 5 Pin 5 ground Available function of RS232 Monitor UPS power status. Monitor UPS alarm info. Monitor UPS running parameters. Timing off/on setting.
overload” 11 Buzzer long beeps, LCD display “output short circuit” The UPS output is in short circuit Make sure the load is not in short circuit, and then restart the UPS. 12 The LED of the Module with RED light The module is not inserted properly. Pull out the module and insert properly. 13 The UPS only works on bypass mode The UPS is set to ECO mode, or the transfer times to bypass mode are limited. Set the UPS working mode to Single Module type(non-parallel) or to reset the times of transferring to bypass or re-start the UPS 14 Cannot Black start Battery switch is not properly closed; Battery fuse is not open; Or Battery low Close the battery switch; Change the fuse; Recharge the battery 15 Buzzer beeps continuously and LCD indicates Rectifier fault or output fault UPS is out of order Consult with your local agent for repair Appendix 4 RS232 communication port definition Definition of Male port： Connection between PC RS232 port and UPS RS232 port PC RS232 port UPS RS232 port Pin 2 Pin 2 UPS send，PC receive Pin 3 Pin 3 PC send，UPS receive Pin 5 Pin 5 ground Available function of RS232 Monitor UPS power status. Monitor UPS alarm info. Monitor UPS running parameters. Timing off/on setting.