E1: blocked rotor

What does E1 mean?

This fault indicates that the internal rotor of the pump is blocked and unable to turn. This prevents the pump from circulating liquid in your system.

• Debris or sludge buildup inside the pump.
• Seized bearings or internal components.
• Mineral deposits (limescale) accumulating over time.

Click steps to track your progress.

1. 1

   Turn off the power supply to the pump at the main electrical breaker for safety.

2. 2

   Carefully inspect the pump for any visible obstructions or debris near the impeller.

3. 3

   If your pump has a bleed screw, open it and try to gently rotate the rotor shaft with a screwdriver to free it (if accessible).

4. 4

   Restore power to the pump and check if the error clears. If not, contact a qualified technician.