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Mend Saunier Duval Pilot Light Water

How can I fix my saunier duval 620F?

I ignite it properly and pilot light swithes on. We get hot water for about 30 secs then it cuts out completely. This also happens when put on central heating. Could anyone please help.

John
October 2008
Several things. Does the fan start. If the fan starts it could be the paddle switch. It could also be the burner box lining fallen on to the burner bar

BENDAN
December 2008
Burner box insulation pos. fallen off. Have to open boiler for this inspection

Bendan
November 2008
Can you hear the fan running. If the bearings are old the fan speed is slow, and this will kill the gas valve as it senses how hot and also CO level witin the chamber

Woodspeed
October 2008

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Click here to mend Saunier Duval oil filled radiators