Some difference in the measured temperature is considered normal because of the measurement uncertainties of the devices. If the difference is more than 10-15 degrees you should check your temperature sensor and sauna thermometer.
You probably need to replace your temperature sensor when even after fixing all the above-mentioned issues:
There could be a problem with the cable connection.
Take down the sensor and try connecting it to the main module using another suitable cable. If the sensor works, you just need to replace the cable. If it still does not work, the sensor needs to be replaced.
In these cases, please contact us at firstname.lastname@example.org.
In most cases, this happens when the cables of the remote control are not connected correctly.
If your Wi-Fi controller still does not connect to the network, take a picture of the error log displayed after pressing “Connect”, and e-mail it to us at email@example.com.
Before checking that, disconnect the stove from the power supply. Make sure that all the cables of the stove and the control console are connected to the main module according to the manual.
If you did not manage to solve the problem, contact us and send us a photo of the main module’s wiring.
If the previous steps did not provide a solution, the problem may be in the main module. In that case, contact us and send us photos of the wiring of the stove and the main module.
Are the heating elements working properly?
To find that out, remove some stones and check if the heating elements turn red while heating. If a heating element does not turn red it is broken and needs to be replaced before further use.
Is there too much ventilation in the sauna room?