I have had a apc smart ups 1500 (tower) hooked up with two ags gx series batteries of 165 ah each. since about two days back the voltage buck light remains constantly on when the unit is on mains power. I used hyperterminal to reconfigure the unit, as my provider had already told me the procedure for battery calibration and other stuff.
The voltage at home and in the plug where ups is connected is 220 as reported by killawatt , volt meters etc. i have another smart ups which does not exhibit this behaviour when connected to the same plug and set of batteries
Here is the problem: if i switch the unit off and disconnect from mains and batteries the buck voltage light comes on as soon as i plug everything back in. All the configuration data is lost as well.
I have talked to my vendor and is asking me to bring the unit in which means a total travelling time of 4 hrs in a city plagued by the metro bus project
Any ideas what is the problem and Is this problem fixable at home?
Thanks in advance