Critical PowerModifications reserved Page 26/91GE_UPS_USM_TLE_SUL_M16_M50_2bU_V010.docx User Manual TLE Series 160 - 500 UL S2B6.1.2 Description of the signaling LEDsFig. 6.1.2-1 LCD screenUPS modelDate (format “MM/DD/YYYY”).Time AM or PM (format “HH.MM.SS”).eBoost (green color)LED ON/lit indicates that the UPS is operating in eBoost™ mode.IEMi (green color)LED ON/lit indicates that the UPS is operating in IEMi mode.Service Key (yellow color)Key for disabling the Service Key procedure.Used only by the GE Service Center.LEDS UPS STATUSLED LOAD PROTECTED (green color)When lit, indicates that the UPS is functioning correctly and the Load is system protected (Loadsupplied either from Inverter or from Automatic Bypass in case of eBoost™ Operation Mode).When blinking, indicates that a regular maintenance service is needed (SERVICE REQUIRED).May be reset by a GE Service Technicians only.See Section 9 – Maintenance – Service check.The LED is OFF when the output switch Q1 is open, indicating that the Inverter is in service mode, notsupplying the Load.