LEGRAND KEOR HP Série Manuel De L'utilisateur page 52

Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
52 OMD10074 REV. C
UPS user manual
Manuel de l'utilisateur de l'UPS
Utilizzo dell'UPS
A43 CURR ERROR LOOP
The control is not able to regulate the rectifier output current precisely.
 Regulation system failure.
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
A44 DESAT IGBT INV
The inverter is blocked due to the operation of the desaturation sensor
of the IGBT drivers.
 Inverter bridge fault.
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
A45 HIGH TEMP SSW
High temperature of the static switch heat sink.
 Fault of the heat sink cooling fans.
 The room temperature or cooling air temperature is too high.
1. Check the fans operation.
2. Clean the ventilation grids and the air filters, if any.
3. Check the air conditioning system (if present).
4. If the alarm persists, contact our Technical Support Service.
A46 PAR LOST REDUND
This alarm is only active on PARALLEL systems. Continuity is not
ensured in the event of a fault on one of the UPS units.
 The total load is higher than the maximum expected value.
 Possible failure on the measuring circuit.
1. Check the load fed by the system.
2. If the alarm persists, contact our Technical Support Service.