Toshiba G2020 Series, Installation And Operation Manual

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66 G2020 Series UPS Installation and Operation Manual
– 94861-004
Code
indication
(Note 3)
LCD Screen Status
Message
Meaning
Recommended
Action
Buzzer
External relay
contact
(Note 1)
Failure
lamp
(Note 2)
UF401 52S ABNORMAL Error to close the contactor 52S.
CALL SERVICE
ENGINEER
Continuous
sound
Major Cont. On
UF402 52S ABNORMAL Error to open the contactor 52S.
CALL SERVICE
ENGINEER
Continuous
sound
Major Cont. On
UF420
52L OPERATION
ERROR Load circuit breaker 52L opened
during inverter operation.
CHECK 52L
Continuous
sound
Major Cont. On
UF451 52S ABNORMAL
Contactor 52S failed during load
transfer from inverter to bypass. CALL SERVICE
ENGINEER
Intermittent
sound
Minor Blinking
UF452 CB3 ABNORMAL
Contactor CB3 is not working
properly. CALL SERVICE
ENGINEER
Intermittent
sound
Minor Blinking
(Note 1) 1) "Major" is defined as a major failure. Load transferred from the inverter circuit to the static bypass line;
2) "Minor" is defined as a minor failure. UPS continues to operate normally, but cause of alarm is identified;
(Note 2) Indicates one of two possible LED illumination patterns
– continuously on (Cont. On) or intermittent (Blinking).
(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”