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Mend Sabre Combi Boiler Heating Fault

how do you fix sabre combi boiler?

Green light flashes every few seconds, thermister replaced,heating and hot water worked for about an hour,then boiler goes to red, whenyou switch off at the mains and switch back on green light flashes no heating pr hot water
please help getting cold

wendy
September 2012
SabreSabre Combi BoilerHeating, Home Heating SystemsCombi Heating Fault
Change water pressure sensor ,that cause of boiler not working ,if water come hot and than cold than change NTC if boiler goes to lock out change overheat sensor

ltd
September 2012

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Sabre Combi Boiler: Red Light & No Heat - Fix?