Posting here as Edugeek is well indexed by Google and this might be of help to someone with a boiler problem.
The fan of a Worcester 24i combi boiler intermittently cuts out. This causes the fail-safe to trigger and the boiler to shut down, and the water runs cold. The fan may restart, the boiler might re-ignite, but cuts out again and the fail-safe shuts down the boiler.
Plumber says the best case scenario is a new control board (£150), worst case
Updated 11th May 2013 at 10:43 PM by jinnantonnixx