Hello. For Error 084---
Faulty speed sensor:
 AS4803L:
- Speed changes by 50% within 4ms;
- Reference speed less than half the rated speed;
- Steer transmission blocked;
- Tear identification: a valid sensor reading is reduced to
zerowithin 4ms and remains at this level for 50ms without
producing a new valid reading.
 PM2402L/2 from V1.60:
- Too many pulses on encoder 3 on steer motor
Email adress???
Best regards, Laci