Xylem LOWARA e-SVE - Troubleshooting; Alarm and Error Codes

en – Original instructions
46
8 Troubleshooting
In case of alarm or error, the display shows and ID code and the STATUS LED turns on (also see
Par. 6.3.2).
In case of several alarms and/or errors, the display shows the main one.
Alarms and errors:
• are saved with date and time
• can be reset by switching the unit off for at least 1 minute.
Errors cause the triggering of the status relay on the following terminal box pins:
• single-phase version: pins 4 and 5
• three-phase version: pins 24 and 25
8.1 Alarm codes
Code
Description
Cause
Solution
A03
Derating
Temperature too high
• Lower the room temperature
• Lower the water temperature
• Lower the load
A05
Data memory
alarm
Data memory
corrupted
1. Reset the default parameters using parameter P68
2. Wait 10 s
3.
Restart the pump
If the problem continues, contact Xylem or the Authorised
Distributor
A06
LOW alarm
Lack of water
detection (if P48= ALR)
Check the water level inside the tank
A15
EEPROM write
failure
Data memory
damaged
Stop the pump for 5 minutes and then restart it again; if the
problem continues, contact Xylem or the Authorised
Distributor
A20
Internal alarm
Stop the pump for 5 minutes and then restart it again; if the
problem continues, contact Xylem or the Authorised
Distributor
A30
Multi-pump
connection alarm
Corrupted multi-pump
connection
• Check the condition of the connection cables
• Check that there are no address discrepancies
A31
Loss of multi-pump
connection
Loss of multi-pump
connection
Check the condition of the connection cables
8.2 Error codes
Code
Description
Cause
Solution
E01
Internal
communication
error
Internal communication
lost
Stop the pump for 5 minutes and then restart it again; if
the problem continues, contact Xylem or the Authorised
Distributor
E02
Motor overload
error
• Excessive motor
current
• Current absorbed by
the motor too high
Stop the pump for 5 minutes and then restart it again; if
the problem continues, contact Xylem or the Authorised
Distributor