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Heat and Water together Problem - Worcester Heatslave Oil Combi?

When I switch the water on, the heating is also coming on at the same even though the heating is switched off. What is causing this and how can it be fixed.

abi
February 2008
WorcesterWorcester HeatslaveHeating, Oil Filled RadiatorsRadiator Boiler Heating
Hi Abi,

Sounds like a possible problem with your diverter valve.
Under normal conditions it diverts the water to either the dhw or the ch, but may be stuck in a mid position or something.

Could replace the diverter valve, or maybe easier to call out a technician.

Tony
February 2008

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Worcester Heatslave: Heating & Water Issue