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Mend Ravenheat 820/20 Home Heating Systems

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Mend Ravenheat 820/20 Combi Boiler Heating

any ideas on a ravenheat 820/20 combi boiler?

The boiler shuts off about 5 minutes after running a bath,when the hot water tap is opened afterwards the water is boiling hot.Everything runs fine when the heating is on.The hot water stat is working ok.

Sam Ward
October 2007
RavenheatRavenheat 820/20Heating, Home Heating SystemsCombi Boiler Heating Ravenheat
hot water stat should let burner fire at max 8mbar and min 1.5mbar. turn on tap, observe burner and when water starts to get hot slowly turn dhw stat down, it should give an audible click and burner flame should reduce, turn it back up and flame should go up accordingly. if it doesnt click then stat faulty, if it does click but flame size stays the same then modureg on gas valve maybe faulty.

paul martin
October 2007

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