Locks:
these codes indicate that the UPS, or one of its parts, is locked. Usually, they are preceded by an alarm signal.
In case of faults and consequent locking of the inverter, the latter will be turned off and the load will be powered via the
bypass line (this procedure is excluded for locks caused by serious and persistent overloads and for those caused by a
short circuit).
CODE
DESCRIPTION
L01
Incorrect auxiliary power supply
L02
One or more internal cables disconnected
L03
Phase 1 input fuse broken or input relay locked (will not close)
L04
Phase 2 input fuse broken or input relay locked (will not close))
L05
Phase 3 input fuse broken or input relay locked (will not close))
L06
BOOST stage overvoltage positive
L07
BOOST stage overvoltage negative
L08
BOOST stage undervoltage positive
L09
BOOST stage undervoltage negative
L10
Static bypass switch fault
L11
L1 bypass output locked
L12
L2 bypass output locked
L13
L3 bypass output locked
L14
Phase 1 inverter overvoltage
L15
Phase 2 inverter overvoltage
L16
Phase 3 inverter overvoltage
L17
Phase 1 inverter undervoltage
L18
Phase 2 inverter undervoltage
L19
Phase 3 inverter undervoltage
L20
Continuous voltage at inverter output or Sine curve of Phase 1 inverter distorted
L21
Continuous voltage at inverter output or Sine curve of Phase 2 inverter distorted
L22
Continuous voltage at inverter output or Sine curve of Phase 3 inverter distorted
L23
Phase 1 output overload
L24
Phase 2 output overload
L25
Phase 3 output overload
L26
Short circuit at Phase 1 output
L27
Short circuit at Phase 2 output
L28
Short circuit at Phase 3 output
L29
Phase 1 output fuse broken or output relay locked (will not close)
L30
Phase 2 output fuse broken or output relay locked (will not close)
L31
Phase 3 output fuse broken or output relay locked (will not close)
L34
Phase 1 heat sink overtemperature
L35
Phase 2 heat sink overtemperature
L36
Phase 3 heat sink overtemperature
L37
Battery charger overtermperature
L38
Phase 1 heat sink temperature probe damaged
L39
Phase 2 heat sink temperature probe damaged
L40
Phase 3 heat sink temperature probe damaged
L41
Battery charger temperature probe damaged
L42
BOOST 1 battery fuse broken
L43
BOOST 2 battery fuse broken
L44
BOOST 3 battery fuse broken