We may have found other answers which could help you.
Click here for Netaheat Not UpNo hot water from Netaheat Profile 50?
My boiler a Netaheat 10-16 "pulses" ?
Netaheat electronic 16/22 not sparking have changed pcb?
netaheat 10-16 combi not firing up?
Netaheat 16/22 dripping water ! Ok to use or repair / replace ?
Boiler fires once then stops?