8.2 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 non-
return valves
E04
Rotor blocked
• Motor stall
• Loss of rotor
synchronism or rotor
blocked by external
materials
• Check that there are no
foreign bodies
preventing the pump
from turning
• Stop the pump for 5
minutes and then start
it again
If the problem continues,
contact Xylem or the
Authorised Distributor
E05
EEPROM Data memory
error
EEPROM Data memory
corrupted
Stop the pump for 5
minutes and then restart it
again; if the problem
continues, contact Xylem or
the Authorised Distributor
E06
Grid voltage error
Voltage supply out of
operating range
Check:
• the voltage
• the connection of the
electric system
E07
Motor winding temperature
error
Motor thermal protection
trip
• Check for impurities
near the impeller and
rotor. Remove them if
necessary
• Check the conditions of
installation and the
water and air
temperature
• Wait for the motor to
cool down
• If the error persists,
stop the pump for 5
minutes and then start
it again
If the problem continues,
contact Xylem or the
Authorised Distributor
8 Troubleshooting
Smart Pump Range INSTRUCTION MANUAL
45
