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Worcester 28 CDI combi?

Thanks for the reply.......Te fire sign lit and then go off by itself,,,,its happenening with both systems with hot water and heating also........I have noticed one thing recently that suddenly the water pressure goes high and it switches off the gas. and after few seconds it starts again........
R. Obeidy, June 2007
sounds like the flame detect electrode or the lead to it.

Paul the gas man, June 2007
link Click here to see other fixes for Worcester.