Wilo · VeroLine and VeroTwin Pumps
The connection to the WSK (Winter Service Kit) or PTC (Positive Temperature Coefficient) sensor has been interrupted, usually indicating a motor fault.
Click steps to track your progress.
Turn off the pump's power supply.
Inspect the wiring associated with the PTC or WSK sensor for breaks or loose connections.
Contact customer service, as this error typically indicates a motor issue requiring professional attention.