My potterton flamingo boiler timmer was working fine but the time was not correct so I ajust it to the wright time turning the dial clockwise. Since then the boiler stays always ON when I select the timing option, turning the selector nob in position 3&4 (once or twice a day for HW and Heating). Heating stops when the selctor nob is in position 1&2 as it should.
Any advice will be much appreciated.
Any advice will be much appreciated.