Shutdown en
Installation and operating instructions Wilo-Stratos PICO 21
9 Shutdown
9.1 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.
10 Maintenance
No special maintenance is required during operation.
ƒ Under the “Maintenance” main menu item, functions are available that are useful
for maintenance.
ƒ Carefully remove dirt from the pump on a regular basis using a dry duster.
ƒ Never use liquids or aggressive cleaning agents.
11 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.
If fault messages appear in the display, the fault management still provides feasible
pump output and functionalities.
A fault that has occurred is persistently checked. Regular operation will be restored if
possible.
The fault-free pump operation is resumed when the cause of the fault is no longer
present. Example: the control module has once again cooled down.
If a fault exists, the display is permanently on and the green LED indicator is off.
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 regulation mode to
Δp-c.
11.1 Warning messages
A warning message is shown in yellow via the status display.
To Next Page
Loading...
Need help?
General
