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Mend Glow-worm Ultracom12 HXI Central Heating Boiler Plumbing

central heating wont turn off?

i have a glo worm ultracom12 hxi model boiler a heat only boiler and cannot turn the central heating off unless i turn off the boiler at the fused spur socket,any suggestions

big al 61
December 2011
Glow-wormGlow-worm Ultracom12 HXID.I.Y, PlumbingCentral Heating Boiler Plumbing
possibly your wall thermostat has broken?

cb
December 2011

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Glow-worm Ultracom12 HXI - CH Wont Turn Off