MAXTEMP error new TAZ4

hi all
Unboxed my new TAZ4 yesterday.
Have an error message: MAXTEMP
I measured both thermocouples. they are around 135K
Checked the wiring connections, but the error message remains.
Any advice would be welcome

Stripped the motherboard thermistor wiring and stuck a 100k resistor in them
Traced the problem back to the nozzle and guess.

The nozzle motor and heater wires are interchangeable.( maybe a to be avoided design ?)
My color recognition skills where nowhere to be found when i plugged them all together.
End well all well. Cheers

I did that once!