en
Shutdown
14
WILO SE 2021-08
7.2.3
Completing the settings
ƒ
Do not rotate the operating button for 2 seconds.
–
The LED display flashes 5 times and changes to the current power consumption
in W.
NOTICE
All settings and displays are retained if the power supply is interrupted.
8
Shutdown
8.1
Shutting down the pump
Shut down the pump immediately if the connecting cable or other electrical compon-
ents are damaged.
ƒ
Disconnect the pump from the power supply.
ƒ
Contact Wilo customer service or a specialist technician.
9
Maintenance
9.1
Cleaning
ƒ
Carefully remove dirt from the pump on a regular basis using a dry duster.
ƒ
Never use liquids or aggressive cleaning agents.
10
Faults, causes and remedies
DANGER
Risk of fatal electrical shock!
Ensure there are no risks arising from electrical current!
• The pump must be voltage-free and secured against unauthorised reactivation
prior to any repair work.
• Damage to the mains connecting cables should always be repaired by a qualified
electrician only.
WARNING
Risk of scalding!
At high fluid temperatures and system pressures, allow the pump to cool down first
and then depressurise the system.
Faults
Causes
Remedies
Pump is not running with
switched-on power supply.
Fuse protection defect.
Check the fuse protection.
Pump is not running with
switched-on power supply.
Pump has no voltage.
Reconnect the voltage.
Pump makes noises.
Cavitation due to insuffi-
cient suction pressure.
Increase the system pres-
sure within the permissible
range.
Pump makes noises.
Cavitation due to insuffi-
cient suction pressure.
Check the delivery head
setting and set it to a lower
head if necessary.
Building does not get
warm.
Heat output of the heating
surfaces too low.
Increase setpoint.
Building does not get
warm.
Heat output of the heating
surfaces too low.
Set the control mode to
Δp-c.
10.1
Warning messages
ƒ
The warning signal is indicated by the LED display.
ƒ
The pump continues to run with limited output.
ƒ
The indicated faulty operating status must not occur for a prolonged period. The
cause must be eliminated.
