How do you fix Grundfos fault code 72?

1. Attempt to reset the alarm via the Grundfos GO app. 2. If the fault persists, contact Grundfos support for further assistance. 3. The pump may need to be replaced if the internal fault cannot be resolved.

72

E3 / Code 72 — Internal fault

Grundfos · ALPHA2 GO Pumps

What does 72 mean?

The warning and alarm symbol flashes red, the display shows error code E3, and the pump stops. This indicates an unspecific internal fault within the pump.

Common Causes

An unspecific internal fault.

Repair Steps & Checklist

Click steps to track your progress.

1
Attempt to reset the alarm via the Grundfos GO app.
2
If the fault persists, contact Grundfos support for further assistance.
3
The pump may need to be replaced if the internal fault cannot be resolved.

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Verified technical data. Last updated: April 2026

Source: Grundfos ALPHA2 GO Pumps

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E3 / Code 72 — Internal fault

E3 / Code 72 — Internal fault

What does 72 mean?

Common Causes

Repair Steps & Checklist

Related Faults