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Fault
In diagnostics test
When runtime calibration is completed UPS still discharging battery and come up with return from low battery condition why?
New battery replaced twice
You need to do UPS manufacturing calibration after the battery replacement. beacuse if you dont do this the UPS is till assuming that your battery is still an old one.
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The possibility of changing UPS code, so its capacity is smaller, the solution must first be returned to its original settings on PC via Hyper term, or the relay damage, or overload
This unit will require you to Brain dead the whole UPS.
To see if it is actually a condition that exists with the hardware or if it was just a lock condition.
Steps:
1)Power down unit completely
2)Unplug all batteries
3)Unplug from wall
4)Leave unplugged for about 5 minutes or so WITH NO POWER AT ALL.
5)Plug batteries back in
6)Plug back into wall
7) Turn unit back on
Log into console of UPS and see if the condition returns.
If it does not return your good to go.
If the error returns. You have to replace the WHOLE battery pack.
APC has told me their units are typically good for 4-6 years, after that their units cannot hold the same tolerances as they did when they were brand new.
I found this on the APC website;
Question: What would cause a Back-UPS Pro, a Back-UPS Pro USB, a Back-UPS RS, a Back-UPS CS, a Back-UPS LS, or A Back-UPS XS to beep once every 5 seconds with no output power? Answer: One beep every 5 seconds is an indication that the UPS has entered what is called "Low Voltage Sleepmode". The Back-UPS product has transferred to battery power due to a low voltage condition at the wall. The Back-UPS has remained Onbattery until its runtime was totally exhausted, however, there was still enough voltage present at the wall to trickle charge the battery.
This is considered to be a normal operating state. When the voltage returns to normal the Back-UPS will wake up and restore power to the battery outlets.
Try to do a runtime calibration using your powerchute software or SNMP agent. Check what is the runtime there, or check the runtime setting of your Powerchute software, maybe it set to more than the actual runtime of the UPS.
I found the following on APC's web-site for the APC Back-UPS, this will hopefully fix the problem:
You can also perform a manual runtime calibration. This could be done if you have changed your equipment load or battery. Stop the PowerChute software from running; disconnect the serial cable between the computer and UPS. Next unplug the UPS from the wall and let it run on battery until it reaches low battery. Once it reaches low battery plug it back into the wall outlet and let it recharge. Recharge time can take up to 4 hours. from link:http://nam-en.apc.com/cgi-bin/nam_en.cfg/php/enduser/std_adp.php?p_faqid=2819&p_created=1048797826&p_sid=tANR-rxj&p_accessibility=0&p_redirect=&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9NCw0JnBfcHJvZHM9MCZwX2NhdHM9JnBfcHY9JnBfY3Y9JnBfc2VhcmNoX3R5cGU9YW5zd2Vycy5zZWFyY2hfbmwmcF9wYWdlPTEmcF9zZWFyY2hfdGV4dD1yZWNhbGlicmF0ZQ**&p_li=&p_topview=1
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