When my central heating is on but with hot water only selected the radiators have started to get hot as well. When this is happening the Honeywell mid position valve (V4073) makes a quite loud clicking sound.
When the heating is selected only the radiators get hot not the water and no noises from valve.
Any ideas?
When the heating is selected only the radiators get hot not the water and no noises from valve.
Any ideas?