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Mend Saunier Duval SD40 Water Light

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 tank any help would be gratfull

gail kelly
September 2007
Saunier DuvalSaunier Duval SD40Heating, Home Heating SystemsSaunier Water Light
replace thermocouple

kris
September 2007

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Saunier Duval SD40 Pilot Light Issues