Microgyr 40 central heating control box is set to Central Heating OFF and Hot Water ON.
When the HW button is depessed manually, both HW AND CH switch on, instead of just the HW as expected.
This previously functioned OK.
There is now also an alpha "B" character flashing on the display panel. What does this represent?
Finally, is there a copy of the manual anywhere?
Many thanks,
Mike.
When the HW button is depessed manually, both HW AND CH switch on, instead of just the HW as expected.
This previously functioned OK.
There is now also an alpha "B" character flashing on the display panel. What does this represent?
Finally, is there a copy of the manual anywhere?
Many thanks,
Mike.