Sauna Controller


The Sauna Controller block allows you to control and monitor your sauna. All conventional heaters are compatible (switched heaters and heaters that accept a 0-10V control signal).

The function block has a timer function, fan and drying control, as well as a safety shut down in case you forget to switch off the heater. You can also use door contacts with the sauna to alert you if the door has been left open and is wasting heat and energy!

The function block can also be used in the user interface, for control whilst on the move! It is important that when using this block that you observe the safety regulations of your country.

Icon Exclamation Mark LoxoneMake sure to select appropriate sensors for the heat in the sauna!
See here our sauna temperature sensor in the webshop.
An over temperature manual cutoff thermostat must also be installed!


Connect the temperature sensor for the sauna to the input AI.

The outputs are for the various types of heaters, AQ for 0-10V analogue, Q1, Q2 and Q3 for stage L1, L2 and L3 heaters. If the heater is a single phase using Q1 we need to set the parameter M to 1.

Then connect the fan to the output Qf.


Tr Trigger sauna
T Analogue input for desired target temperature
AI Analogue temperature for actual temperature
Tf Trigger fan
Tc Starts the hourglass timer
D Door position sensor
Ab Bench temperature
P Input for presence detector
R Reset
Dis Disable
AQ Analogue output 0-10V control
Q1 Digital output For turning Phase 1 (L1) on/off
Q2 Digital output For turning Phase 2 (L2) on/off
Q3 Digital output For turning Phase 3 (L3) on/off
Qa Status output For whether the sauna is active or not
Qf Digital output for fan control
AQt Remaining time for hourglass timer [s]
Qd Digital output status for airing phase
Qe Error status
AQs Status output for target temperature
Qte Pulse when timer countdown finishes Pulses when actual temperature is higher than desired temperature, see parameter Ts
Qta Digital output Gives the timer’s status (on/off)
Tc Temperature correction Adjustment for the actual temperature in the seating position (use if no bench sensor present)
Td Airing time
Tn Fan duration after airing time finished
Tt Duration of hourglass timer
To Maximum allowed temperature before a safety shutdown
Ts Time before a safety shutdown occurs
P PWM period [s]
V Gain
M Type of AC input used Off = Three-phase
On = Single-phase