Product line: mini, maxx, maxx pro
Fault in core temperature probe (fourth measurement point CTC4), 
short circuit to frame MUX2: CTC4

| Possible reason for fault | Corrective action | 
|---|---|
| CTC probe bent or broken | Contact the responsible service partner (make a note of the message on the display) | 
| CTC probe cable insulation damaged | Contact the responsible service partner (make a note of the message on the display) | 
