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Mend Worcester ZB 728 Heating Fault

Fault E8 on Worcester condenser boiler ?

Hello,

My ZB 728 WOrcester condenser boiler is flashing Fault E8. I tried to reset a dozen of times with no success.. Any idea ?
Many thanks!
Caroline

Caroline
February 2014

Worcester Worcester ZB 728 Heating, Home Heating Systems Worcester Heating Fault

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Worcester ZB 728 Fault E8 - Help & Fix