my boiler has is a worcester bosch greenstar 40cdi and has been working fine . tonight turn it on and get the blue light but when turn the hot water/heater to continual it does not fire up at all and no fault message, nothing just not firing up. checked electrics fine, gas not been adjusted. so need help thanks

john, July 2010

Does the reset button and/or blue light flash?
Need more information on this, and timing of the blue button flsh if apparent.

Carefree, July 2010