Effekta PEGASUS II 10 KVA, Operating Manual

Page: 101 / 128

UPS user manual
Rev.A 05/15/2012 101
Alarm
A23 EPO PRESSED
Description The system is blocked due to the activation of the emergency power off
button.
Possible
causes

Activation of the (local or remote) emergency power off button.
Solutions 1. Release the emergency power off button and reset the alarm.
2. If the alarm persists, contact our Technical Support Service.
Alarm A24 HIGH TEMPERATURE
Description High temperature of the heat sink on the inverter bridge or tripping of
the DC fuses which protect the inverter bridge.
Possible
causes

Fault of the heat sink cooling fans.

The room temperature or cooling air temperature is too high.

Tripping of the DC protection fuses.
Solutions 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. Check the status of the DC fuses on the inverter bridge input.
5. If the alarm persists, contact our Technical Support Service.
Alarm A25 INVERTER OFF
Description The inverter is blocked due an operation failure.
Possible
causes

Various.
Solutions 1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
Alarm A26 COMMUNIC ERROR
Description Internal error.
Possible
causes

Microcontroller communication problems.
Solutions 1. If the alarm persists, contact our Technical Support Service.
Alarm A27 EEPROM ERROR
Description The controller has detected an error in the parameters stored in
EEPROM.
Possible
causes

Wrong parameters entered during programming.
Solutions 1. Contact our Technical Support Service.