Bobcat T190 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 T190 Model
Stop the machine on a firm flat surface. When
removing or installing attachments (such as a
bucket), always have a second person in the
operator's seat, give clear signals and work carefully.
NOTE: Installation and removal of a bucket is shown.
The procedure for other attachments is
similar. Disconnect all hydraulic connections
prior to removing the attachment (breaker,
auger, etc.)