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    Vaillant Combi DHW Microswitch

    I put a post on here a few days ago re a Turbomax VUW 242/1/E with no HW except when the CH was on. I had some advice from DP which mentioned a white plastic arm possibly broken or in need of adjustment. Having a fiddle last night, I discovered a black plastic arm with a brass pivot on the...
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    Vailant Combi Boiler - No Hot Water

    I have the same problem as another post here.... hot water only when heating is on. Could this have been caused by deposits in the water supply??? Since work on the water mains four months ago, we have had black particles in our water supply, but so far only evident in the cold water to the...
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