After initailly calling for hot water, the boiler will keep re igniting after 5 mins of hot water. We have removed the fan to clean any dust debris, and if we blow in the red pipes it will continue with a good hot supply. Fan seems ok. Do you think this could be the air pressure switch?

Baker, March 2010

Hi, this is Worcester, Bosch Group

We offer technical advice for installers on our website: www.worcester-bosch.co.uk.

Our technical team can also help with enquiries - please call 0844 892 3366.

We look forward to helping you.

Worcester, Bosch Group, March 2010

clean out the venturi in the fan, this is a common fault which can cause the boiler to cycle

hudds gas, March 2010