How to mend ... Duval Sd F

how can I stop my boiler switching off just two minutes into a shower?

My Saunier Duval SD 30e is 10 year old it has started to fault when I run hot water such as a shower. On start... [Read more]

Saunier duval boiler. Type sd 620 f?

How do you empty system? How come radiators are half hot and cold, how can solve this? Is there any manuals f... [Read more]

wiring danfoss 103 timer to a danfoss ret230p thermostat?

I have a Sunier Duval SD 620 combi boiler and have a Danfosse 103 timer ~ old but reliable ~ Im fitting a Danf... [Read more]

Saunier Duval SD 620F Leaking?

Hi Folks, I have been looking after my old SD boiler for twenty odd years, I have replaced hoses, pump, fan, a... [Read more]

EXPANSION VESSEL PROBLEMS ... Help !!!?

1. when I attach a pump to put air into the vessel, having got it to the correct 1 bar pressure on the pump, t... [Read more]

Very High Pressure (on a Saunier Duval SD 620)?

I am getting very high pressure readings on the above combi boiler. the pressure or water when cold is 1bar an... [Read more]

can I replace hose on sd 623?

I have avery small leek occasionly dripping from underneath my boiler which I am told is from a hose. Is it so... [Read more]

saunier duval old boiler?

we have a SD combi boiler and the heating is working fine but the hot water only works when the heating is ON ... [Read more]

Saunier Duval SD 623?

Hi all, I have a Daunier Duval SD 623 that last night stopped providing any hot water or heating. Lead... [Read more]

pilot light?

i have a saunier duval sd 623 combi and i am having promlems getting the pilot light to stay lit. it was worki... [Read more]

how to fix timer on Saunier Duval boiler?

The timer on my SD boiler doesn't go around as it should. I can hear it ticking when I put my ear close and if... [Read more]

When heat in thermostate put two on , heating comes on for a while?

When heat in thermostate put two on , heating comes on for a while and when heatings on no hot water but pilot... [Read more]

leaking boiler saunier duval sd 623 14 years old?

i have a saunier duval boiler that is leaking inside it is leaking from some sort of housing at the bottom of ... [Read more]

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 o... [Read more]

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... [Read more]

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) he... [Read more]

Fixing a Saunier Duval SD 623?

I live in France but have not had any success finding an answer here. Irregularly the boiler fails to restar... [Read more]