I at first thought that the bed thermistor wiring is faulty but when I swap round the thermistor connections (i.e. plug extruder thermistor into Therm2), I get the message:
Sounds to me as the thermistor on the headed bed is broken.
As I recall it the resistance of the NTC is declining as the temperature rises. The conclusion, if the reading is high, the resistance of the NTC is low, thus it is broken.
What is the reading when you measure the NTC resistance on the heated bed (Should be around 100K)
Hi - Sorry - it was my wiring error - I had swapped over the two sets of red/brown wires on the ribbon cable so that the Therm 2 was connected to the Y Stop and vice versa - its all working fine now - thanks for the responses