Lowara e-HME, Инструкция по установке, эксплуатации и обслуживанию

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en
– Original instructions
42
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 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
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