Saunier Duval light flashing-no hot water!Damsel in distress

[evsl]

Hi there, really grateful for any advice!

We have a 9 year old Saunier Duval Thema F 23 E Combi Boiler. Yesterday the light for the water pressure started flashing, suggesting a fault has been detected on the water circuit. The gas is not lighting and there is no hot water coming through the taps.

However the pressure gauge is in the normal range. It was at 1, so I topped it up a little to around 1.75, but this hasn't helped.

I've turned it off and back on again several times but no luck.

I think something is wrong with the boiler sensing the water pressure.

Any advice about what we can do would be great as the Engineering Hotline quoted £288 which is out of our budget

Thank you!

 

[muggles]

Could be a faulty pressure sensor or it could be the PCB, get a local reputable boiler engineer to look at it, they should be cheaper than Summat Dreadful's own engineers if it's the pressure sensor, although if it's the PCB expect a bigger bill