The house's heating is run by a STORM control unit on the wall outside the bathroom. The logic is simple: three modes (Summer, Winter, off), and you set the temperature you want with two buttons. As well as the control unit, each radiator has its own little valve with numbers from 1 to 5: if a particular room is too warm or too cool compared with the others, you adjust it there without touching the central unit.
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Three modes · Summer, Winter, Off
The mode shows at the top of the control unit's display: ESt (Summer, heating off for the warm season — the default from May to October), INV (Winter, heating active), OFF (a full forced shutdown, to use only if needed). To change mode: press the ⏻ OK button at the bottom right until the one you want appears. The video below shows the move.
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Setting the temperature (in INV)
When you're in INV (Winter) mode, you set the temperature you want with the two thermometer buttons on the right: 🌡▲ raises it, 🌡▼ lowers it. The control unit holds the requested temperature by turning the radiators on and off automatically. In winter we suggest 19–21° — warmer tires you out, uses more energy and dries the air.
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If it's too warm · lower the temperature, don't open the windows
When the heating is on (INV), opening a window means throwing out the heat just produced — and the control unit, sensing the room cooling, keeps calling for more. To air a room: switch the heating off first (go to ESt or OFF), open the windows for a few minutes, then go back to INV. If, on the other hand, it's only a little too warm: lower the temperature on the control unit (🌡▼) or adjust the valve on that room's radiator (see below).
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The valves on the radiators · 1 to 5
Every radiator in the house has a little valve with a knob numbered 1 to 5 (1 = cooler, 5 = warmer). If one particular room is too warm while the others are fine — it often happens in the double bedroom, which has a different aspect — don't touch the control unit: turn that room's valve knob from 5 towards 1, and that radiator alone cools down. The others keep heating as normal.
French windows · tilt-and-turn