Massey 6480 hydraulic problem

[Romney_Rob]

2004 Massey arms won't lift up or down . Under the draft controls there is a warning triangle and it is flashing a red dot.
3 red then 8 red

Anyone got a idea what it means?

 

[towbar]

3 6 is the highest code I can see in manual
Also 3 is usually informational messages

 

[Romney_Rob]

Chandler's came out this morning - it had lost its calibration 2 mins with a laptop plugged in and she was good to go.