Ecomax Faults:

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Call: Mark 07515-687740


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Ecomax PRO 18E / 28E

Vaillant ecomax facia red lock out

F.01 Code: Red Neon Lit.?

Defective ignition, electrodes,

or chamber seals leaking.

Vaillant ecomax pro 18 pro 28 facia

Normal ‘Operation’ display.

Green neon lit..

Other Codes / Faults:

No display:

Fan Failure, Gas Valve, PCB, or no power..

Leaking condensate collector:

Replace. or horrific damage to chassis

Blocked Heat Exchanger:

F.05 and noisey...

Remedy..... COMMIT SUICIDE.!

Ecomax 824/828/1

Vaillant ecomax fault display
Vaillant ecomax lcd display
Vaillant ecomax f.code display
Vaillant ecomax F.01 code display

There are no coloured neons on the ECOMAX.

The operation mode is displayed in the LCD screen

The fault codes are fairly accurate on the Ecomax, use the user instructions for guidance.

Reset by holding in the ‘reset’ button for a couple of seconds, and release..


It is a criminal offence to work on a gas appliance if you are not qualified, and licensed to do so.

ALWAYS consult the manufacturers user instructions for guidance. The instructions above are for guidance only. If unsure of any procedures, call a boiler specialist, who holds the relevant qualifications, and GAS Safe Registration.