How to repair F4 code?

how to repair F4 code on Saunier Duval F12/1 boiler

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Saunier duval themaclassic f18e?

Saunier duval themaclassic f18e not working - the boiler started turning off showing a red warning light after a period of time, I would power the boiler down and it would do the same thing again. Aft ... more

Saunier Duval Therma Condens F30E?

When we run our bath the water is luke warm to cold. The bathroom sink and kitchen sink are working properly with lovely hot water.!! please help

isotwin condens f 35 e service menu codes?

Hello, My gas boiler Saunier Duval ISOTWIN CONDENS F 35 E consumes too much gas. I ask for help in obtaining service instructions for this boiler. I am interested in a detailed description of all ser ... more

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Saunier Duval Boiler Red light flashing F18 fault?

What does F18 fault mean?

Saunier Duval Isofast condens F35E....nothing working?

I have been on holiday and turned the boiler off at the mains, on returning turned it on and the remote said Radio fault ...changed the batteries in the remote ... nothing on remote or boiler no manua ... more

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Saunier Duval F35E will not fire up?

boiler has pressure, will not fire up for heating and hot water. the green light flashes and the pressure/temp gauge also flashes. on the odd occasion it burst into life and runs fine.

Saunier Duval Boiler Filling Key?

Hi. I have lost the plastic tube/key that is needed to open the filling loop at my Saunier Duval boiler. I am having trouble finding a replacement. Can anyone help?

I have a Saunier Duval Isotwin condens F 35 E with hot water No heating?

the fault on the board says F 14 which is clear on the manual but I have no idea what F 24 means. My setting is on hot water and heating but the heating is not coming on. anyone know what the fault mi ... more

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