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Bosch Worcester Greenstar CDi Conventional boiler. Central heating only comes on when hot water is also on. Central heating cuts out when hot water is off.

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SOURCE: My Worcester Bosch Greenstar Combi

just had same problem.  this apprently happens if the power supply has been interrupted or you switch the power on and off.
• The boiler runs for 15 minutes at minimum heat output to fill the condensate trap, the display (K) alternates between -II-” and the boiler flow temperature. This occurs every time the mains supply has been interrupted.

Posted on Jan 07, 2009

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SOURCE: bosch greenstar 30 CDi - no central heating or hot water!

it sounds like the system was not cleaned properly when the new boiler was fitted. all new boilers need to have the pipework flushed to remove any debris scale sludge and flux from the system. this is now usually done by a power flush which is basically a big pump mounted on a big bucket and it washes the dirt out of the pipework and collects in the bucket. if this is not done the dirt will block up the small passages in the heat exchanger. i suggest the system is cleaned flush and the heat exchanger changed to help protect the boiler a filter should be fitted (for example a magna clean) if the company who installed the boiler is corgi registered then they are liable for the damages. call corgi for advice.

Posted on Mar 26, 2009

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take your pick from video or text

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

? 3:30
https://www.youtube.com/watch?v=zUsBw1ZpiKY
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
https://www.youtube.com/watch?v=K6fH4XfGgxo Nov 10, 2012 - Uploaded by Rory Macfarlane
This video demonstrates how to repressurise a Worcester combi boiler on the.

Product Troubleshooting Videos ' Worcester, Bosch Group

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Repressurise Worcester boiler

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