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I'm having problems with the CH for my Worcester Bosch Greenstar 42CDi combi boiler. The boiler is basically repeating the same routine: 1) The flame lights, and the temperature display rises rapidly (around 1 degree per second) until it hits around 60 degrees or more. 2) The flame then goes...

Hi everyone! Since coming back to the house from a weekend away, I've found that the CH for my Greenstar 42CDi Combi Boiler is not working. Here's a picture of the boiler panel: http://i43.tinypic.com/sy9xqt.jpg And here's a picture of the digital thermostat...