APC Smart-UPS 1400 rack

imam omenjeni model UPS-a, ki ima težave... Zadnjih nekaj tednov se trudim odpraviti napako, in sicer mi apctest (del paketa apcupsd) na vhodu prikazuje več kot 260V (V-meter in drug UPS pravita, da je napetost 220V), napetost na accu pa okrog 50V (vezani sta dve 12V 7,2Ah zaporedno in prav takšna kombinacija vzporedno, torej 24V, kot dokazuje tuvi V-meter). UPS je praktično brez prestanka na baterijah, saj mu več kot očitno ne diši vhodna napetost.

kaj lahko naredim? kaj je lahko narobe? kdo med vami rihta te UPSe za male denarje?

prilagam izpis delujočega in nedelujočega UPS-a.
delujoči smart-ups 1400 'tower'

UPS Status: 0C
Line quality: FF
Reason for last transfer to batteries: L
Self-Test Status: NO
Line Voltage: 213.2
Line Voltage Max: 214.5
Line Voltage Min: 208.0
Output Voltage: 240.5
Batt level percent: 100.0
Batt voltage: 27.60
UPS Load: 011.4
Line freq: 50.00
Runtime left: 0108
UPS Internal temp: 030.6
Dip switch settings: 00
Register 1: 00
Register 2: 00
Register 3: 00
Sensitivity: M
Wakeup delay: 000
Sleep delay: 180
Low transfer voltage: 196
High transfer voltage: 253
Batt charge for return: 00
Alarm status: 0
Low battery shutdown level: 02
UPS Name: UPS_IDEN
UPS Self test interval: OFF
UPS manufacture date: 01/17/01
UPS serial number: gs0103006739
Date battery replaced: 01/09/09
Output voltage when on batteries: 230
Nominal battery voltage: 024
Percent humidity: NA
Ambient temperature: NA
Firmware revision: 70.11.I
Number of external batteries installed: 000
Number of bad batteries installed: NA
UPS model as defined by UPS: KWI
UPS EPROM capabilities string: uD43132135138129uM43229234239224uA43110112114108uI 43253264271280lD43103100097106lM43177172168182lA43 090092081085lI43196188208204e44200155090oI43230240 220225oD
13115oJ13100oM13208s441HMLLq44202050710p4430201803 00600k4410TLNr443000060180300E443336168ON OFF
The EPROM string is 253 characters long!
Hours since last self test: NA

nedelujoči smart-ups 1400 rack

UPS Status: 02
Line quality: 00
Reason for last transfer to batteries: H
Self-Test Status: NO
Line Voltage: 264.9
Line Voltage Max: 266.4
Line Voltage Min: 263.5
Output Voltage: 000.0
Batt level percent: 018.0
Batt voltage: 55.89
UPS Load: 000.0
Line freq: 49.75
Runtime left: 1338
UPS Internal temp: 018.0
Dip switch settings: NA
Register 1: 40
Register 2: 00
Register 3: 00
Sensitivity: L
Wakeup delay: 020
Sleep delay: 020
Low transfer voltage: 182
High transfer voltage: 237
Batt charge for return: 00
Alarm status: T
Low battery shutdown level: 02
UPS Name: UPS_IDEN
UPS Self test interval: 336
UPS manufacture date: ˙˙˙˙˙˙˙˙
UPS serial number: ˙˙˙˙˙˙˙˙˙˙˙˙˙˙
Date battery replaced: 01/09/09
Output voltage when on batteries: 208
Nominal battery voltage: 048
Percent humidity: NA
Ambient temperature: NA
Firmware revision: 1?8.3.M
Number of external batteries installed: 255
Number of bad batteries installed: NA
UPS model as defined by UPS: YWM
UPS EPROM capabilities string: uD43127130133136uA43108110112114uI43253257261265uM 43225229233237lD43106103100097lA43092090088086lI43 208204200196lM43182178174170e4820015253550607590oD 13120oA13100oI43230240220225oM13208s441HMLLq482020 5071012151820p483020060120240480720960000k4410TLNr 483000020060120240480720960E443336168ON OFF
The EPROM string is 293 characters long!
Hours since last self test: NA