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not working on htg or dhw ?

main burner not fireing up fan on gas on new pcb pressure sw ok /
pete, July 2010
pete, ged again, have you also checked the boiler overheat thermostat and the boiler thermostat also if this is a condensing boiler make sure the sump is not blocked

ged, July 2010
pete is the pump ok ie seized!

ged, July 2010