Terry nelson asked ... How to remove the flexible shaft from a curved shaft ryobi t?    |    Matt Longmore asked ... Non-start on Flymo XLT 250?    |    John asked ... How to fix my fireplace?    |    Ian Scott asked ... Remove cover off gas boiler?    |    wendy asked ... Old Creda Solar Plus Cooker will not come on?    |    Click here to ask your question

i have a valiant ecotech it is showing f75 ?

it is not firing up i have turned it of and on and still the same can anyone give me a tip to try
claire, September 2008
Find a competent engineer who is able diagnose the fault to be the pressure sensor and explain why. Other wise it will be the build up of sludge and debris from the radiators in boiler that is affecting the sensor - best of luck

Dosta, September 2008
From Vaillant manual.

F.75 No pressure rise was detected on turning on the pump Water pressure sensor or/and pump defective
Too little water in appliance; check adjustable by-pass;

May be a stuck or faulty pump also check pressure guage is at least 1 bar

Ian, September 2008