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Forced pumping

Forced pumping — Pump is operating in a manual override mode

Grundfos · MAGNA3 Pump

What does Forced pumping mean?

This indicates that the pump has been manually overridden to operate regardless of normal control signals or fault conditions. This mode is typically used for testing or specific maintenance.

Common Causes

  • Manual activation of a forced operation mode.
  • Specific system test requirement.
  • Troubleshooting procedure.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that 'Forced pumping' mode was intentionally activated.

  2. 2

    If not intended, check the pump's control panel or app settings to disable this mode.

  3. 3

    Ensure that operating in forced mode will not damage the pump or system, especially if a fault condition is present.

  4. 4

    Return the pump to its automatic operating mode once troubleshooting or testing is complete.

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

Related Faults

10Alarm 10 — Communication fault between electronic parts29Alarm 29 — Forced pumping, flow through stopped pump40, 75Alarm 40 or 75 — Supply voltage too low
Source: Grundfos MAGNA3 Pump
Open Manual (Page 21)Search more codes in this manual