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home Fix label Heating label_important Home Heating Systems

e04 ?

showing on boiler whats is that problem thank you
sandra, May 2010
home Fix label Heating label_important Home Heating Systemsdone
What boiler do you have? If it's a Ravenheat low nox boiler then it's due to over heating this is normally caused by a blocked plate heat exchanger.

Chris, May 2010

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Fix Fault - Heating

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