Leaking water, plumber advised new circuit board required purchased at great expense. Fitted still not working, turns on water and heating lights up then locks out. At a loss what to do. Any advise most welcome
If the pump is working then get a proper service which will include a clean of the aps venturi. Also these boilers suffer from breaking down of the ht leads which may need replacing or protecting with silicone tape. Giving the burner a wash will also help as the software does not allow for the split second timing difference a dirty boiler takes to work, hope this helps.?
Rich the gas man.
Look like pump pack up ,look for is pump working ,than comes fan ,than pressure switch
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