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heatline s20/s30 boiler?

I have a flashing light on my boiler for DHW sensor and is affecting the heating so that the boiler does not stay on to heat the radiators. Will I be able to rectify this as diy and if so what would I likely need to do? Thanks

gaz
October 2012
Change diverter valve motor black push fit pull pin out and replace

ltd
October 2012

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