Bobcat S185 12-21 Error Code
12-21 Error Code
Auxiliary Pwm Switch Out Of Range High is the main cause of 12-21 error.To solve 12-21 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 S185 Model
Before beginning operation, inspect the work area for
unsafe conditions.
Look for sharp drop-offs or rough terrain. Have
underground utility lines (gas, water, sewer, irrigation,
etc.) located and marked. Work slowly in areas of
underground utilities.
Remove objects or other construction material that could
damage the excavator or cause personal injury.
Always check ground conditions before starting your
work:
- Inspect for signs of instability such as cracks or
settlement.
- Be aware of weather conditions that can affect ground
stability.
- Check for adequate traction if working on a slope.