Hi friends, cental heating in my flat though light on, is cold these days. I am using vokera 14/48se&20/70se boiler, pressure is normal, hw is ok, but, ai, could anyone offer some advice? many thanks.
Motorised valve - if it has 3 pipes then motor needs replacing. If 2 x 2 pipe MV's then it's the one for the CH. Whichever, if you move the lever to the MAN position your radiators will get warm when hot water is heating.
Move boiler tharmostat down and HW thermostat right UP to keep radiators warm until MV fixed.
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