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Hi, The DHW was intermittently working and only then the white lever would disengage the microswitch. Thinking myself "clever" I fitted a service kit and you can imagine my surprise to find after a short time the same thing was happening. Would adjusting the flow rate help me out here? I would have thought the kit alone would suffice, that said the diaphragm looked ok...why am I surprised eh? Anyway chaps, please save me further embarrassment with the customer and help a bloke out