ged Posted February 3, 2008 Share Posted February 3, 2008 Hi Like the other post I too are having problems with our Viessmann boiler it's a Vitodens 300. At the moment I have hot water but no heating, on the diplay screen I have a tap and ^ sign! Does this boiler have a over ride button to turn the water and heating just till the engineer comes as I'm very cold. Thanks for any help. Link to comment Share on other sites More sharing options...
BIG MAC Posted February 3, 2008 Share Posted February 3, 2008 Page 58 on for fault finding, hope this helps.http://www.viessmann.co.uk/downloads/Vitodens100Compact-Service.pdfI would guess that perhaps the heating system needs made up to the correct pressure and vented check any AAVs and vent from them also. Link to comment Share on other sites More sharing options...
ged Posted February 3, 2008 Author Share Posted February 3, 2008 Thanks for the reply I'll check it out. Link to comment Share on other sites More sharing options...
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