Grundfos · MAGNA3 Pump
This fault indicates that the electrical supply voltage to the pump has risen above the acceptable operating range. Excessive voltage can damage the pump's electronics and motor.
Click steps to track your progress.
Immediately turn off the pump to prevent further damage.
Check the main power supply voltage to ensure it is stable and within the pump's specified limits.
Inspect electrical connections for any signs of improper wiring.
If your property experiences frequent overvoltage, consider installing a surge protector or voltage stabilizer.
Contact a qualified electrician to investigate the electrical supply and connections.