22
WILO SE 03/2013
English
10.1 Defect acknowledgement
CAUTION! Possible damages!
Cancel defects only when their causes have been
removed.
• Only authorized service representative are
allowed to remove defects .
• Defect acknwoledgement could be done:
- Either by infrared communication in
Service/Error menu.
- Or by CAN bus (20C0h parameter)
- Or by switching X-Care off.
If the fault cannot be solved, please contact
Wilo customer services.
Defect
no.
Indicator
Delay time
before defect
activation
Delay time
before auto-
matic restart
(if any)
Maximum
defect
number
per 24h
Defects / causes
Remedies
E01
60s
60s
6
Pump speed is too low
Fluid viscosity is too high
Pump is faulty
Dismantle the pump, clean and change
defective parts
Defective pump shaft
coupling
Check torque for coupling screws
Wrong threshold for low
speed parameter
Modify low speed parameter
E11
5s
60s
6
Air-binding or dry running
of the pump
Prime the pump again (refer to installa-
tion and operating instructions manual
provided with the pump)
Check tightness of seals and gaskets on
suction side
E16
60s
No restart
1
Wrong direction
of rotation
Invert 2 phase wires for pump power
supply
E30
60s
300s
6
Ambient temperature is
too high
X-Care is specified not to work for an
internal ambient temperature greater
than +70°C
Check fluid temperature that must not
be above 120°C
E42
5s
No restart
1
Pressure sensor wire is cut
(4-20mA)
Check sensor wire
E44
5s
No restart
1
Speed sensor wire is cut
(4-20mA)
Check sensor wire
E47
5s
No restart
1
X-Care temperature sen-
sor is damaged
Call customer services
E50
CAN bus failure
Check connections
E53
Duplicated CAN address
Check all the devices connected to the
CAN bus have all different addresses
E54
CAN bus disconnected
Check CAN network
E60
15s
60s
6
Total pump head is too
high for the pump
Use a pressure reducing valve at suction
to limit maximum head
Wrong threshold for maxi-
mum head parameter
Modify maximum head parameter
E71
< 1s
No restart
1
EEPROM failure
Call customer services
