Wilo ElectronicControl Notice De Montage page 31

English
10 Faults, causes and remedies
DANGER! Risk of death!
Only a specialised and qualified personnel is authorized to repair!
Observe the safety instructions (see chapter 9).
Fault
E011
DRY RUN
E021
OVERLOAD
E025
DISCONNECT MOTOR
E040
P SENSOR DEFFECT
E031
OVER T°
E023
SHT CIRCUIT
E071
EEPROM
E005
HIGH VOLTAGE
27
ElectronicControl behaviour
The ElectronicControl starts
the pump every 30 minutes
over 24 hours. If dry running
remains, it switches off the
pump.
After the alarm detection the
ElectronicControl will try 4
times to start the pump. After
these 4 trials the pump is swit-
ched off.
Motor supply stop
The ElectronicControl stops.Q
If the temperature is too high,
the ElectronicControl stops
and then the pump.
After the alarm detection the
ElectronicControl will try 4
times to start the pump. After
these 4 trials the pump is swit-
ched off.
If the ElectronicControl
detects a defect on its internal
memory this error will be dis-
played.
If the ElectronicControl
detects an overvoltage, it
stops over some seconds and
then starts again.
Remedies
Check the hydraulic supply.
If a set point pressure higher
than the pressure the pump
can deliver is programmed,
the ElectronicControl will
consider it as dry running.
Check that the rotor is not
locked.
Check the input data in the
ElectronicControl.
Check the state of the fuses..
Check the motor winding.
Check the supply cables.
Check the state of the 20A
fuses (Fig. 4, Pos. 4).
Contact the technical service
department:
Check that the water tempe-
rature does not exceed 40°C.
Check that the ambient tem-
perature does not exceed
50°C.
Check the motor.
If the problem remains, con-
tact the manufacturer.
Contact the technical service
department:
Check the ElectronicControl
supply voltage.
WILO SE 05/2011