E28.1.2.x - Error from SSR temperature sensor for oven heater

Product line: maxx pro

Error from SSR temperature sensor for cooking-chamber heating element (-3B0 thermocouple disconnected),
short circuit to frame MUX1: -3B0

Possible reason for fault	Corrective action
The software setting is incorrect	Have a software update performed If the error still appears, contact the responsible service partner (make a note of the message on the display)