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Pump does not start or stops working

Pump does not start or stops working — Check connections, fuses, or supply issues

Wilo · VeroLine and VeroTwin Pumps

What does Pump does not start or stops working mean?

The pump is failing to start or is shutting down unexpectedly, which can be caused by electrical issues or supply problems.

Common Causes

  • Loose cable terminal connections.
  • Defective fuses.
  • Insufficient electrical supply.
  • Blockage in the pump.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check and tighten all cable connections.

  2. 2

    Inspect fuses and replace any that are defective.

  3. 3

    Verify the electrical supply is adequate and stable.

  4. 4

    Check for mechanical blockages in the pump (see E010).

Browse all codes in this manual (45)
Verified technical data. Last updated: April 2026

Related Faults

3 red flashes3 red flashes — Communication error6.0.0.0 flashes6.0.0.0 flashes — Ready to acknowledge error6.0.0.0 steady6.0.0.0 steady — Error acknowledgement countdown active
Source: Wilo VeroLine and VeroTwin Pumps
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