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Mend Worcester 350 Boiler Heating Circuit Board

my combi 350 worcester is tripping running to hot?

I have a combi 350 boiler I have checked both pumps and they are working. the combi is igniting even when there is no demand for hot water. Both the heating are running to hot. the heating will only come on if I swap the connections over on the circuit board.

Mark
March 2010
WorcesterWorcester 350Heating, Home Heating SystemsBoiler Heating Circuit Board

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