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My Worcester Greenstar HE boiler is showing an error sign (EA) and I dont have the manual for it. The system has not been turned on for over a year.

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Mine is showing an error sign (C 4) can someone please tell me what to do its very cold :(

Posted on Dec 23, 2012

  • ice6246
    ice6246 Dec 23, 2012

    mine is showing an error sign (C 4) can someone please tell me what to do its very cold :(


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I have the same boiler and this code refers to gays suply error, i would suggest a engineer to yake a look at it but first check if ur gas suply is ON ...!

Posted on Aug 30, 2009


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Posted on Jan 02, 2017

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take your pick from video or text

How to Repressurise a Heating System with an Internal Filling Key ...

? 3:30
Oct 27, 2010 - Uploaded by Worcester, Bosch Group
This video shows you how to repressurise your heating system using your Greenstar gas boiler's internal ...

Repressurise Worcester boiler - YouTube

? 4:12 Nov 10, 2012 - Uploaded by Rory Macfarlane
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How to top your Worcester combi boiler up - Gas Care. Aug 4, 2014 - If the needle on the pressure gauge on your boiler has gone into the red or down to zero it means there is little or no pressure left in the heating system and it needs to be topped up ASAP. So here's Gas Care Swansea's guide to refilling your Worcester Bosch combination boiler through the internal filling link.

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