How to mend ... Duval Hot Water

thelia 23e saunier duval?

I have a D.H.W. problem that i thought i had fixed by replacing the diapdragm. All was well for a week, now th... [Read more]

Saunier Duval F35E auto-vents down to code 21 in minutes?

7 year old boiler, noticed code 21 (radiator circuit pressure low) so she opened the filling loop but left it ... [Read more]

'f19' error report - Saunier Duval 'Thermoclassic' boiler?

Recently my boiler is failing to deliver hot water. - It is hot at first then runs cold. On examination I fin... [Read more]

Saunier Duval Semia C24 not heating?

We have a C24 which is working sometimes and sometimes not, when it works it starts heating for 1 minute until... [Read more]

Query boiler not giving heat or hot water?

I have a Saunier Duval F24E:2 and the red and green lights as on constantly. The thermostat is showing at 21 ... [Read more]

How can I fix my Saunier Duval Semia Condens boiler?

The Central Heating (CH) side works perfectly but the Domestic Hot Water (DHW) has developed a problem, thus..... [Read more]

Saunier Duval Combi Boiler Pressure Rises?

Hi Hopefully someone can answer this problem for me please? I have a Saunier Duval Thema Condens F30e Bo... [Read more]

i have saunier duval combi?

saunier duval combi boiler has no L.E.D display on boiler but fuse in plug ok ?what could it be? i have no hea... [Read more]

Noisy Saunier Duval Thelia 20 n No Hot Water / Heating but pilot ON?

My Boiler Want Fire Up though gas pilot light is on and can hear constant noise from the boiler of running Fan... [Read more]

No c/h working saunier duval f23e combi boiler?

hot water working fine but when turning the central heating on it fires up for a few seconds and then switches... [Read more]

no display on control panel saunier duval f35e ?

display on f35e not working ,power to boiler and fuse on pcb is ok, There is no hot water

Saunier Duval F23e radiators get hot when using domestic hot water only?

I have a Saunier Duval F23e boiler. Few months back the radiators were getting hot when we were only using dom... [Read more]

I have a saunier duval thelia 23e combi boiler?

The heating is not working & when I run the hot water the burner comes on then turns off after 15 secs and kee... [Read more]

I have a saunier duval isofast f 28e ?

The boiler works fine but when you call for hot water when the heating is on it will supply hot water but sto... [Read more]

saunier duval e30?

im getting heating from radiators but no hot water.boiler starts to heat water for a few seconds then water go... [Read more]

Saunier Duval F35E Isofast ?

Our boiler (usally on hot water only) makes a noise like a motor bike (pop pop pop pop pop pop) that vibrates ... [Read more]

saunier duval therma condens f 30 e boiler?

I had the boiler fitted in 2007 with no problems until recently. We have no hot water unless the heating is tu... [Read more]

Saunier duval F23E?

I have saunier duval f23e boiler and when the heating is off , the radiarors get hot when we use hot water.

no hot water or centeral heating saunier duval semia condens f24?

what is the fault the number 12 comes up on front of boiler display

Saunier Duval F28 E2 problem?

Hi I have a Saunier Duval Isomax F28 E2 boiler which contains a water tank that holds approx 45 litres of ... [Read more]