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E001

E001 - Pump overload

Wilo · Helix VE Pumps

What does E001 mean?

The pump is experiencing an overload condition, likely due to the liquid being pumped being too thick or containing obstructions. The red LED will light up.

Common Causes

  • Density or viscosity of the conveyed liquid is too high
  • Pump is obstructed by particles

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the pump and wait 300 seconds.

  2. 2

    Dismantle the pump.

  3. 3

    Clean any obstructing particles.

  4. 4

    Replace any defective components.

  5. 5

    Manually acknowledge the fault after resolving the issue.

Browse all codes in this manual (24)
Verified technical data. Last updated: April 2026

Related Faults

E then 3 digitsE followed by 3 digits - Fault page displayedE004 (E032)E004 (E032) - Low converter supply voltageE005 (E033)E005 (E033) - High converter supply voltage
Source: Wilo Helix VE Pumps
Open Manual (Page 34)Search more codes in this manual