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Mend Worcester Bosch Greenstar No Hot Water Heating System

what does f40 and f30 mean?

boiler was working night before,went to have bath no hot water. boiler is on bar is on 2 but the temperature stays at 21. the boiler is not firing up. then f40 and f30 came on when i pressed the reset button. .

kimberley
September 2007

Worcester Bosch Worcester Bosch Greenstar Heating, Home Heating Systems Worcester Bosch No Hot Water Heating System

give us a clue. What boiler make and model is it!

mrgas
September 2007

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Worcester Bosch F40 & F30 Error Codes - Fix