5. WILO PARA CIRCULATOR
1. COMPONENT DESCRIPTION
Block/unblock the key
• Activate the keypad lock by pressing the control key for 8
seconds, until the LEDs of the selected setting flash briefly
and then release.
> The LEDs flash continuously after 1 second.
> If the keypad lock is active, the pump settings
can no longer be changed.
• The keypad lock is deactivated in the same way as it is
activated.
WARNING
Should the power supply be interrupted, all
settings and displays remain stored.
Activating the factory setting
The factory setting is activated by pressing and holding the
control key and deactivating the pump.
• Press the control key continuously for at least 4 seconds
> All the LEDs flash for 1 second.
> The LEDs of the last setting flash for 1 second.
• When the pump is restarted, it will run with the factory
setting (delivery status).
Deactivation
Stopping the pump
If the connection cable or other electrical components are damaged,
stop the pump immediately.
• Disconnect the pump from the supply voltage.
• Contact Wilo Customer Service or a plant engineer
.
Maintenance
Cleaning
• Clean the pump regularly by carefully removing the dirt with a dry
cloth.
• Never use aggressive liquids or detergents.
5.2 Faults, causes and solutions
Faults must only be repaired by authorised skilled technicians; work
on electrical connections must only be performed by authorised skilled
electricians.
Faults
Causes
Pump
Faulty electrical
not working
fuse
with the power
The pump has no
supply
voltage
connected
The pump
Cavitation due to
makes
insufficient delivery
noises
pressure
The building
Thermal power of the
does not
radiant panels is
heat up
too low
38
Solutions
Check the fuses
Eliminate the power
supply interruption
Increase the system pressure
within the permitted range
Check the head setting and, if
necessary, set a lower head
Increase the delivery
value
Set the adjustment mode to
Δ
Δ
p-c rather than
p-v
8
sec
GB
GB