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
