Bobcat S550 U1090-51 Error Code
U1090-51 Error Code
Hub Controller Not Programmed is the main cause of U1090-51 error.To solve U1090-51 locate and open the low-pressure valve, then attach the refrigerant to the valve and charge from there. Ensure you use the right refrigerant type and amount, as specified by a manufacturer. It is possible to overcharge the AC, so consider seeking help from a mechanic.
Tip For S550 Model
When operating on uneven ground, operate as slow as
possible and avoid sudden changes in direction.
Avoid travelling over objects such as rocks, trees,
stumps, etc.
When working on wet or soft ground, put planks on the
ground to provide a solid base to travel on and prevent
the excavator from getting stuck.