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    Potterton Profile 40e - Firing up problem

    Hi all, After some help here. I have done timings of events when boiler fires up from cold (start of program): 09:17 Boiler fired up all ok. Set to Max 09:30 Boiler switches off. Outer casing hot (probably normal) 09:31 Boiler tries to fire up. Sounds like relays/valves are working. Fan starts...
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