I have just replaced the battery in this ups (full charge at 12.7VDC) and after initial power on of the unit, 4 sec later it clicks to yellow and shuts off, all fuses and breakers check out and I am unsure if its a relay failure or IC system problem.
hi, i would say ic problem, but check the battery connections-make sure they are not somewhat loose,clean them, and try again. hope this helps, good luck! glen
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