Wilo · Wilo-Stratos GIGA Pumps
The shaft is mechanically blocked. The pump will switch off if the blockage is not removed within 10 seconds. Check the shaft for ease of movement.
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Turn off the pump.
Carefully check the pump shaft for any obstructions or resistance to movement.
If the shaft is difficult to turn, request customer service.
Attempt to manually rotate the shaft after confirming it's safe to do so.