Wilo Yonos GIGA2.0-D, Installation And Operating Instructions Manual

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Faults, causes and remedies en
Installation and operating instructions Wilo-Yonos GIGA2.0-I/-D 193
If an error message is output, the display is permanently on and the green LED indicator
is off.
The following table gives an overview of possible messages in the display:
Universal Display text
Error Fault
Please check operating
manual Check the installation and operating instructions
Double pump Twin-head pump
This head Location: This head
Partner head Location: Partner head
Exists since: Since
Acknowledge needed Confirmation required
For acknowlege long
press knob Press and hold the button for acknowledgement
Acknowleged, waiting
for restart Acknowledged, waiting for restart
Reset energy counter Reset energy counter
Press return key to can-
cel Press “Back” to cancel
Press and hold return
key to cancel Press and hold “Back” to cancel
System Notification System notification
no valid Parameter No valid parameters
Production mode active Production mode active
HMI blocked Display blocked
Code Fault Cause Remedy
401 Unstable power supply Unstable power sup-
ply. Check the electrical in-
stallation.
Additional information about causes and remedy:
Power supply too unstable.
Operation cannot be maintained.
402 Undervoltage Power supply is too
low. Check the electrical in-
stallation.
Additional information about causes and remedy:
Operation cannot be maintained. Possible causes:
1. Mains overloaded.
2. Pump is connected to the wrong power supply.
403 Overvoltage Power supply is too
high. Check the electrical in-
stallation.
Additional information about causes and remedy:
Operation cannot be maintained. Possible causes:
1. Pump is connected to the wrong power supply.
404 Pump blocked. Mechanical influence
is inhibiting the rota-
tion of the pump
shaft. Check free movement of
rotating parts in the pump
head and motor.
Remove deposits and for-
eign substances.
Additional information on causes and remedies:
In addition to deposits and foreign substances in the system, the pump shaft
can also be blocked.