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Glow-Worm 30cxi combi boiler. No hot water.CH ok?

Turning on hot tap produces 30 secs.tepid water, then permanent cold. Central heating fine. Pressure 1.5 bars.
Paul, April 2013
blocked primary on plate HE, power flush, replace,

daddy j, June 2013
Change diverter valve motor ,it's round black motor ,pullout holding pin pull out wire connection ,replace it ,refer to manual

ltd, April 2013
link Click here to see other fixes for Glow-worm 30cxi.