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Mend Saunier Duval Thelia 623 Home Heating Systems

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Mend Saunier Duval Thelia 623 Boiler Fan Runs Hot

saunier duval thelia 623 boiler ?

fan runs on saunier duval thelia 623 but no heating and hot water

BRETT
November 2010
Saunier DuvalSaunier Duval Thelia 623Heating, Home Heating SystemsBoiler Fan Runs Hot
carefree's right but check front case to burner/heatexchanger is sealed fully (location lugs on top clips on bottom-seal rubber okay. any air leak and air pressure switch which sences a vacum in boiler just won't

deano
November 2010
Probable air pressure switch failure

Carefree
November 2010

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