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Red LED lit

Red LED lit — General fault signal

Wilo · Control EC-Fire Pump

What does Red LED lit mean?

The collective fault signal LED is lit, indicating that a fault has been detected within the system. This often accompanies an acoustic alarm.

Common Causes

  • One or more faults have occurred in the system.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the LCD display for a specific error code.

  2. 2

    Consult the manual for the error code to diagnose the problem.

  3. 3

    Address the cause of the fault as described in the manual.

  4. 4

    Acknowledge the fault on the switchgear after resolution.

Browse all codes in this manual (14)
Verified technical data. Last updated: April 2026

Related Faults

1 red flash — 1 green flashAlternating red and green flashes — Pump failure detectedDisplay shows alternating error codeDisplay shows error code — Specific fault informationE006E006 — Rotating field error
Source: Wilo Control EC-Fire Pump
Open Manual (Page 42)Search more codes in this manual