baxi 80 eco

[yoz2580]

hi, my baxi 80 eco is igniting intermittently.. it has been doing this since i changed the heat exchanger.. i have also changed the diverter valve, and the temperature sensor. it has also been reset many times from the front and the reset switch just below the temp sensor. sometimes the boiler will not ignite at all. its happening with the H/W and C/HEATING.. PLEASE ADVISE FURTHER.
thankyou

 

[feltham]

hi im not entirly sure mate but could it be your spark igniter gap which should be 4mm , something on the burner so it earths out or it could be pressure switch faulty .

is it trying to spark or when up to temp dose it cut out and dont relight?