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Yes the CH was warm - just finished stripping down the diverter valve, cleaned up the valve inside, also took apart the diaphragm and re-used the old pin in the new diaphragm NOw have hot running water with tap fully on! Assumed sticking valve Thanks

I'll check this. I was worried about how far out to turn this screw - In installation it said antic clockwise to increase temperature My boiler is an Apha CB24

Hi I bought the spare parts of ebay. The diaphragm was I believe fitted the right way rounf - I noted the original installation with the spring mechanism pointing to the right and the larger spring on top of that again to the right, contained by the cover. The boiler fires up every...

Hi The hot water on our CB24 boiler stopped working under any circustances. I've just replaced the diverter diaphragm - which when I removed had a hole in it, flushed out the secondary heat exchange and replaced the dhw switch. Now, the hot water is working only if I set the tap to about...