MITSUBISHI
ELECTRIC
20033C SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
6-2
Failure Code List
Note 1
Note 2
Note 3
LCD Failure Code
Status
Guidance
Buzzer
External send-
out contact
Failure LED
00
Test mode (Pulse check)
-
[1]
-
-
01
Maintenance mode
-
[1]
-
-
10
Battery circuit abnormal
Call service engineer
[1]
Minor
Flicker
11
Battery test
-
-
-
-
12
Battery circuit abnormal
Call service engineer
[1]
Minor
Flicker
13
Battery depleted warning
-
[1]
Alarm
Flicker
14
Battery depleted
-
[2]
Alarm
Lit up
15
Battery temperature abnormal
Check battery
[1]
Alarm
Flicker
16
Battery temperature abnormal
Check battery
[1]
Minor
Flicker
17
Battery charge voltage abnormal
Call service engineer
[1]
Alarm
Flicker
18
DC voltage abnormal
Call service engineer
[1]
Minor
Flicker
19
Battery depleted (Converter
overload)
Check AC input voltage
[2]
Major
Lit up
21
AC input voltage out of range
Check AC input voltage
[1]
Alarm
-
22
AC input phase rotation error
Check AC input voltage
[1]
Minor
Flicker
23
Converter overload
Call service engineer
[1]
Alarm
Flicker
24
Converter over current
Call service engineer
[1]
Minor
Flicker
25
Converter abnormal (DCOV)
Call service engineer
[2]
Major
Lit up
26
Converter abnormal (DCUV)
Call service engineer
[2]
Major
Lit up
27
Converter abnormal
Call service engineer
[2]
Major
Lit up
28
Converter abnormal at pre-charge
Call service engineer
[2]
Major
Lit up
31
Inverter voltage abnormal
Call service engineer
[1]
Minor
Flicker
32
Inverter abnormal (VLOV)
Call service engineer
[2]
Major
Lit up
33
Inverter abnormal (VLUV)
Call service engineer
[2]
Major
Lit up
34
Inverter abnormal (OC)
Call service engineer
[2]
Major
Lit up
35
Inverter abnormal
Call service engineer
[2]
Major
Lit up
36
52C abnormal
Call service engineer
[1]
Minor
Flicker
37
52C abnormal
Call service engineer
[1]
Minor
Flicker
41
Bypass voltage out of range
Check bypass input
-
Alarm
Flicker
MITSUBISHI ELECTRIC 2033C SERIES UPS