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Just moved into house with a Worcester Combi boiler. The first time I switched it on it fired up then made a loud noise then switched itself off. Since then I've not
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Controls of Combi boiler powered by oil to heat domestic water switched on and central heating radiators switched off Stock Photo - Alamy
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Navien Combi-Boiler Switch 28826110DW01190348 Fits NFC-250/175H NG | eBay
TanklessParts.com: Noritz NPH224 Overheat Switch - Burner - 200 for NRCP and Combi Boiler models
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Combination Boiler with 2 Heating Zones, 230V Switching
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