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Mend e04 Showing Boiler Problem

e04 ?

showing on boiler whats is that problem thank you

sandra
May 2010
e04Heating, Home Heating SystemsShowing Boiler Problem
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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Boiler Error E04: Causes & Fixes