Lock: indicate a breakdown of the UPS or one of its parts. Locks are normally preceded by an alarm signal. In the
event of a fault and resultant breakdown of the inverter, the inverter will be switched off and the load will be powered by
the bypass line (this procedure is excluded for breakdowns caused by high and persistent overloads and by short
circuits).
Incorrect auxiliary power supply
One or more internal cables disconnected
Phase 1 input fuse broken or input relay locked (will not close)
Phase 2 input fuse broken or input relay locked (will not close)
Phase 3 input fuse broken or input relay locked (will not close)
BOOST stage overvoltage positive
BOOST stage overvoltage negative
BOOST stage undervoltage positive
BOOST stage undervoltage negative
Static bypass switch fault
Direct voltage at output of inverter or Sine wave inverter distorted
Short circuit at output of Phase1
output fuse broken or output relay locked (will not close)
Heat sink 1 overtemperature
Heat sink 2 overtemperature
Heat sink 3 overtemperature
Battery charger overtermperature
Temperature probe of heat sink 1 faulty
Temperature probe of heat sink 2 faulty
Temperature probe of heat sink 3 faulty
Temperature probe of battery charger faulty
BOOST battery 1 fuse blown
BOOST battery 2 fuse blown
BOOST battery 3 fuse blown
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