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Mend Vaillant F75 Ecotec

How do I fix F75 problem on vaillant ecotec 618 R1?

How do I fix F75 problem on vaillant ecotec 618 R1

Tricia
February 2012
VaillantHeating, Home Heating SystemsF75 Vaillant Ecotec
f75 normally means low pressure check presure and refill 2 1bar wen cold if ur pressure is ok then u prob got a faulty pressure sensor or even some crap in sensor

blaiross
February 2012
Turn the mains power off to your boiler for 5 minutes to let the pcb fully discharge all it 'stored power' then turn back on.

bill
February 2012
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