On display troubleshooting
Short description of possible errors, the device might show on the display:
Crossed battery
Bad batteries - requires the replacement of batteries as soon as
possible.
Thermostat sensor failure.
No display or the display is malfunctioning
Temporary display malfunction. Press reset button softly.
Tip: If the device is not in use for a long time and there is no need for heating, remove the batteries to prevent battery
leakage and extend the battery life.