CodeRegistry
Brands
  1. Home
  2. Wilo
  3. Yonos PICO Pumps
  4. Green LED flash
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

Green LED flash

Green LED flash - Restart or Venting function activated

Wilo · Yonos PICO Pumps

What does Green LED flash mean?

The function LED briefly flashes green when the manual restart or the pump venting function is activated.

Common Causes

  • Manual restart activated via function key
  • Pump venting function activated via function key

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Confirm that the function key was pressed correctly to activate the desired function.

  2. 2

    Wait for the function to start (typically after 5 seconds).

  3. 3

    Do not press the function key again unless you intend to cancel the operation.

Browse all codes in this manual (17)
Verified technical data. Last updated: April 2026

Related Faults

Bars bottom to top blinkBars bottom to top blink - Pump venting function activeBuilding does not get warmBuilding does not get warm - Heating output too lowE04E04 - Undervoltage detected
Source: Wilo Yonos PICO Pumps
Open Manual (Page 16)Search more codes in this manual