Toshiba G9000 SERIES Installation And Operation Manual page 92

Note 3
Code
Status message
indication
UF401 52S ABNORMAL
UF402 52S ABNORMAL
52L OPERATION
UF420
ERROR
UF451 52S ABNORMAL
UF452 CB3 ABNORMAL
(Note 1) 1) "Major" is defined as major failure. Inverter transferred to the static bypass line;
2) "Minor" is defined as a minor failure. UPS continues to operate normally, but cause of alarm
must be identified;
(Note 2) Indicates one of two possible LED illumination patterns - continuously on (lit) or intermittent
(flicker).
(Note 3) Code indication means:
UA+++------------------------ Alarm
UF+++ ------------------------ Failure
U%0++ ----------------------- Rectifier circuit failure
U%1++ ----------------------- DC circuit failure
U%2++ ----------------------- Inverter circuit failure
U%3++ ----------------------- Control circuit failure
U%4++ ----------------------- Bypass system failure
U%8++ ----------------------- Alarm
U%+00 - U%+49 --------- Major failure
U%+50 - U%+99 --------- Minor failure
*) "+" denotes any numeral from 0 to 9
*) "%" denotes either "A" or "F"
82
Meaning
Error to close the contactor 52S.
Error to open the contactor 52S.
Load circuit breaker 52L opened during
inverter operation.
Contactor 52S failed during load transfer
from inverter to bypass.
Contactor CB3 is not working properly.
Guidance Buzzer
CALL SERVICE Continuous
ENGINEER sound
CALL SERVICE Continuous
ENGINEER sound
Continuous
CHECK 52L
sound
CALL SERVICE Intermittent
ENGINEER sound
CALL SERVICE Intermittent
ENGINEER sound
G9000 Installation and Operation Manual
Note 1 Note 2
External Failure
relay contact lamp
Major Lit on
Major Lit on
Major Lit on
Minor Flicker
Minor Flicker