Saunier Duval f30e cuts off after 32 seconds.

[David Stellaman]

Hi peeps. I have this boiler that went off last week, completely dead. I fault found on the control pcb and found a power Reg blown, a smoothing cap dried up and a fuse blown. Replaced all three and now the boiler fires up, gives hot water for exactly 32 seconds then shuts down with red light flashing but no error code. You can reset it and fire it up again but same thing happens. I then bought a refurbed control pcb but that didn't cure it. The fan is spinning but other that that I don't know what to go for next. Strange that it should have a pcb fault and then this secondary fault. Any advice appreciated.
Thanks, Dave

 

[SimonG]

Are you gas safe registered?

 

[David Stellaman]

Are you gas safe registered?

No Simon.

 

[David Stellaman]

No Simon.

To elaborate, I have been turned down by three gas safe registered engineers due to the age of the boiler. I am a skilled technician with over 40 years in the TV trade. While this doesn't make me a skilled gas engineer I have gained a lot of experience in those years of fixing other things outside my trained skillset as probably have many on this forum. I am keen to keep electronic waste and any other kind to a minimum and was merely asking the question in the hope that there was merely something I had overlooked in the process of fitting the pcb. I would never mess around with the gas side of equipment. I understand concerns about taking money out of qualified engineers pockets but due to a lack of interest from the engineers approached have come here as a last resort.

Thanks, Dave

 

[SimonG]

Over to you @ShaunCorbs

 

[ShaunCorbs]

As the pcb controls everything inside the boiler and can lead to a dangerous ending thread closed please don’t mess about with stuff your not qualified in