Hi all. I have a problem with my ups. My battery was finished an year ago. Battery unplugged from UPS.
A few days ago I changed the battery with an original one. I mount it, connect ups to the power socket , no consumers plugged to ups, and when i press power button i heard a constant tone, no led lighted visible. This sound is ending when i press power button again.
Just after power on, before the constant tone, i heard o noise like a relay trying to connect for 1-2 seconds.
Thank you, waiting for a solution.
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