If you let go after the beep ends you will need to try again.Ĥ) UPS should go through its' normal self test and end up on battery with 4 beeps every 30 seconds. Remove any attached load.Ģ) Press and hold the power button (labeled ""I/TEST"" on legacy non-LCD screen units) on the front of the UPS until you hear a LONG beep.ģ) Let go DURING the long beep. If there is no load attached, the battery will appear healthy.ġ) Turn off and unplug the Smart-UPS from wall. This is because the self-test is comparing the battery health compared to the load attached. Never use a Cold Start to troubleshoot a bad battery LED as it will clear the light most every time even if the battery is actually bad. This is a great way to establish if a UPS will not turn on due to bad input power. It does not however reset saved preferences. The Brain Dead procedure performs a hard reset of the Smart-Ups microprocessor. The Cold start procedure is used to determine if a UPS is functional if it will not turn on when plugged into utility power. This document explains how to perform the Cold Start and Brain Dead procedures.
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