I have a 20 year old free standing gas boiler with storage cylinder in roof space. When the hot water is switched on 2 or 3 of the radiators nearest the boiler heat up even though the heating switch is not on, Any suggestions re cause and how to rectify would be appreciated
Boiler on for hot water, heating off but some radiators hot
- Thread starter slunge
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Motorised valve letting by (if you have any)
As above. Check the bypass isn't open also
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