HARVIA K Series consists of all-in-one control units designed for electric sauna heaters with a maximum heater load of 9 kW. The control unit is wall-mounted outside the sauna room in a dry indoor area in accordance with the manufacturer's installation instructions.
All K Series models provide a sauna temperature adjustment range of 40–125 °C and a maximum continuous heating time of 6 hours. A connection for sauna lighting and a temperature sensor with overheat protection are provided. The maximum sauna heater load is 9 kW, the electrical supply is 400 V 3N~, and the protection class is IPX4.
The models differ in their control functions. K1 Next is the basic version with straightforward temperature control. K2 Next adds a digital display and preset start time adjustment in 15-minute intervals. K3 Next can control both a sauna heater and an evaporator up to 3 kW and includes a two-sensor system, humidity mode and low-water indication. K4 Next features a digital display, a preset timer of up to 24 hours with minute-level adjustment and fault indication.
Installation and electrical connection must be carried out by a qualified professional in accordance with the manufacturer's instructions.










































