• Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.

Vaillant Turbomax 828e CH turning on ignoring the timer

Go to d.9 and press the i button, note the figure in the display when the clock is 'off' and then note when it is 'on'. Post back the results and I'll tell you weather it's a clock or pcb you need.
 

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