Warning Messages; Fault Messages - Wilo Yonos PICO-Z Installation And Operating Instructions Manual

10.1

Warning messages

10.2

Fault messages

Installation and operating instructions • Wilo-Yonos PICO-Z • Ed.01/2023-02
Faults
Pump is not running with
switched-on power supply.
Pump is not running with
switched-on power supply.
Pump runs, there is no circu-
lation.
Pump makes noises.
Pump makes noises.
• The warning signal is indicated by the LED display.
• The pump continues to run with limited output.
• The indicated faulty operating status must not occur for a prolonged period. The cause
must be eliminated.
LED Faults
E07 Generator operation Water is flowing through the
E10 Blocking
E11 Pump running dry
E21 Overload
• The fault signal is indicated by the LED display.
• The pump switches off (depending on the error code) and attempts a cyclical restart.
LED Faults
E04 Undervoltage
E05 Overvoltage
E10 Blocking
E23 Short-circuit
E25 Contacting/winding Winding defective.
E30 Excessive temper-
ature of module
E36 Module defective
Causes
Electric fuse defective.
Pump has no voltage.
Circulation piping not filled/
not vented.
Cavitation due to insuffi-
cient suction pressure.
Cavitation due to insuffi-
cient suction pressure.
Causes
pump hydraulics but there is
no mains voltage to the
pump.
The rotor is continuously
blocked.
Air in the pump.
Sluggish motor, pump is op-
erated outside of its spe-
cifications (e.g. high module
temperature). The speed is
lower than during normal op-
eration.
Causes
Power supply too low on
mains side.
Power supply too high on
mains side.
Rotor blocked.
Motor current too high.
Interior of module too warm. Check operation conditions.
Electronics defective.
en
Remedies
Check the fuse protection.
Reconnect the voltage.
Circulation piping filled and
vented.
Increase the system pressure
within the permissible range.
Check speed/delivery head
setting and set lower speed/
delivery head if necessary.
Remedies
Check mains voltage.
Automatic restart is
triggered.
Check volume flow / water
pressure.
Check the ambient condi-
tions.
Remedies
Check mains voltage.
Check mains voltage.
Activate manual restart or
contact customer service.
Contact customer service.
Contact customer service.
Contact customer service.
15