BTW, I also cannot set the supply temp. When I follow the instructions in the user manual the display appears to want me to set the K-Factor even though the space heating supply icon is flashing. I cannot get the K-factor icon to flash at all. Only the supply icon will flash; the display shows "2.0". That is K-factor stuff, yes? Tapping the button again does not change which icon flashes. There are three icons in the lower part of the screen. Space heating supply temp, Thermostat and K factor. These are on continuously. Thx.