Bobcat 753 P21C3 Error Code
P21C3 Error Code
DEF Main Heater Relay Short to Ground is the main cause of P21C3 error.To solve P21C3 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 753 Model
Operate as slow as possible and avoid sudden changes
in lever direction.
Avoid travelling over objects such as rocks, trees,
stumps, etc.
Stop the machine before moving the upper equipment
controls. Never allow the blade to strike a solid object.
Damage to the blade or hydraulic cylinder can result.