E022.x — Insulation fault

What does E022.x mean?

The insulation monitoring device has detected a fault. This means there might be an issue with the electrical insulation between the pump's conductors and the earth potential.

• Faulty pump
• Wiring issue
• Problem with the earth connection

Click steps to track your progress.

1. 1

   Inspect the pump for any visible damage.

2. 2

   Check all wiring connections, ensuring they are secure and correctly installed.

3. 3

   Verify the earth connection is properly made and intact.

4. 4

   If the fault continues, consult a qualified electrician or contact Wilo customer service.