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en
– Original instructions
37
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 Description
Cause
Remedy
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 in the system
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
8.2 Error codes
Table 15: Error codes
code Description
Cause
Remedy
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
High 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
E03
DC-bus overvoltage
error
DC-bus overvoltage
External conditions cause the
operation of the pump from
generator
Check:
the system configuration
the position and integrity of the check valve or
the clapet valve
Summary of Contents for e-LNEEE
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