Troubleshooting; Alarm Codes; Error Codes - Lowara e-SVE Installation, Operation And Maintenance Manual

en – Original instructions

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

Table 14: Alarm codes
code
A03
A05
A06
A15
A20
A30
A31

8.2 Error codes

Table 15: Error codes
code
E01
E02
42
Description Cause
Derating Temperature too high
Data memory alarm Data memory
corrupted
LOW alarm Lack of water
detection (if P48= ALR)
EEPROM write Data memory
failure damaged
Internal alarm
Multi-pump Corrupted multi-pump
connection alarm connection
Loss of multi-pump Loss of multi-pump
connection connection
Description Cause
Internal Internal communication
communication error lost
 High motor current
Motor overload
 Current absorbed by
error
the motor too high
Remedy
 Lower the room temperature
 Lower the water temperature
 Lower the load
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
Check the water level inside the tank
Stop the pump for 5 minutes and then restart it again; if the
problem continues, contact Xylem or the Authorised
Distributor
Stop the pump for 5 minutes and then restart it again; if the
problem continues, contact Xylem or the Authorised
Distributor
 Check the condition of the connection cables
 Check that there are no address discrepancies
Check the condition of the connection cables
Remedy
Stop the pump for 5 minutes and then restart it again; if
the problem continues, contact Xylem or the Authorised
Distributor
Stop the pump for 5 minutes and then restart it again; if
the problem continues, contact Xylem or the Authorised
Distributor