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Energy bills have been increasing. There are still ways to reduce this.

Vaillant Ecotec (Post 2012) Flow Temperature adjustment

The following video shows you how to adjust the flow temp. Increasing the flow temp also turns off summer mode (umbrella / parasol symbol

To adjust the flow temp

Newer Ecotecs with 4 rectangle buttons and no dials


  1. Press the top right button shown under the radiator symbol.
  2. Adjust the temperature using the ‘+’ and ‘-‘
  3. Press button under ‘OK’ ie top right
  4. Press ‘back’ once to get to home screen.

Additional Resources

If you are unable to adjust the flow temperature or the parasol symbol remains, then you may have a faulty boiler / pcb, that will require a engineer visit to resolve.

Disclaimer: Information on this website is provided for informational purpose therefore we cannot accept liability for subsequent problems. All repair tasks should be carried out by qualified trades people. We may also receive commission payments when you are taken to external websites and complete purchases from third party sellers, once you leave our site, we cannot be held liable for your purchases.