Fix Fault Saunier Duval

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We have 349 questions about fixing 'saunier duval'

hi my Saunier Duval boiler leaking from inside also?

boiler leaking from inside also when hot water tap on few readitors getting warm anyone know why thanks


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how do i turn on the timer on a saunier duval 623?

I recently moved into a house with an sd 623 but the timer appears not to work. Is there a switch to turn it on ?


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h6w can i fix my saunier duval f23e boiler?

radiators keep getting hot when the hot water is in use even though heating is switched off at the main switch, i have had to resort to switching each radiator off at the valve. Any ideas? any suggest ... more


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unable to fill my combi?

i removed a radiator then when i came top the water back up i cant seem to get it to fill i opened the air vents on the radiator still no good my boiler is a saunier duval thelia


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my saunier duval sd40 water heater for my caravan the pilot light is n?

the pilot light will not stay on when i take my finger of the button replaced the main water tank last year tried replaceing the heat exchanger fiund their was a build up of sut round the main water ... more


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the pilot light keeps going out when im trying to light?

sut is collecting round the boiler cant get it to work just got a new tank were the water runs through it last year worked fine for a few weeks on my saunier duval model sd40 caravan water heater


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boiler ignites intermittantly?

the saunier duval sd623 combi boiler ignites sometimes when tap is turned on, it can fire up several times in a row and when it doesn;t light up if you turn the Max/Min dial back and forth a couple of ... more


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Saunier Duval SD623?

The pressure reads zero and the valve that usually repressurises the system does not work, almost as if it has an airlock. There is no sound of any water movement in the pipes at all. Any ideas what ... more


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Saunier Duval has gone off!! Please Help!!!!?

Hi,Iv got a Sauner duval Boiler F23 its about 5 years old. The fans fine,pumps fine,control pcs's are fine. But i can't put any water into the boiler. Ive took all the water out of the radlators bu ... more


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How to repressure a Saunier Duval SD623 Combi Boiler?

My sister-in-law has a Saunier Duval SD623 Combi Boiler and only now getting luke warm water from the hot taps. The pressure bar is on 0 instead of 1 so I guess it needs re-pressure. I am several mi ... more


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Problem with Saunier duval SD 30e?

When i run water the boiler fires up but the L.E.D lockout light illuminates after about 5-10 seconds.The same happens when the central heating is switched on. Anyone with any ideas to resolve this p ... more


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saunier duval 2002 model lossing presure we havent got our manual?

our boiler has been lossing pressure and therefore our heating has been going off, me and my partner bought our house to years ago and do not have the manual. help!


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Pilot light not staying on?

Saunier Duval Theila 23 The pilot light lights up when you press the on button and wait the 20 seconds as recommended on the intructions. when you let go after the 20 seconds the pilto light does not ... more


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spare parts for a saunier duval Sb30e?

I live in Glasgow Can anyone tell me where to get spare parts for my boiler.Many thanks Hugh.


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Saunier Duval Xeon 60FF Boiler - Fan Hunting?

The boiler won't fire up, the flue fan just keeps stopping & starting. Followed Faulting guide & swapped Air pressure switch & control board, checked all piping, also swapped fan but no change. Any id ... more


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I have a saunier duval sd623 combi, I have no hot water or heating?

I have a saunier duval sd 623 combi, I have no hot water or heating. When I turn a tap on the second(main) heating flame does not kick in, so I presume the boiler is lacking some pressure change, can ... more


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how dow i fix saunier duval hot water is luke warm?

hot water is not hot but luke warm central heating working fine temperature is turned to give max hot water pressure is good


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Is changing the diaphragm a big job?

Is changing the diaphragm on my Saunier Duval 30 E combi boiler a big job ? Could i do it myself or should i get a plumber in? Thanks Tom


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Bleeding saunier duval boiler 30 E?

Can anybody tell me how to bleed my saunier duval 30 E combi bolier? Thanks Tom


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No hot water but Radiators ok on Saunier Duval 30 E?

I have exactly the same problem. No hot water but radiators work fine. This problem occured when pressure on boiler was dropping and i had no heating. I have fixed the pressure with a new part and rad ... more


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