Page 2024 - Foton Workshop Manual - Tunland (AT)

61-28 HEATER AND AIR CONDITIONING - REFRIGERANT

Symptom Possible Cause Diagnostics Action
• Clean the
condenser.
61 • Check the
• Overly refrigerant • Refrigerant overly operation of the
leads to insufficient filled. condenser fan.
High pressure at both
cooling. • Dirty condenser. • Replace the
low and high ends.
• Poor radiation at • Defect in condenser condenser.
the condenser. fan. • Check whether the
refrigerant volume
in the system meets
the standard.

• Air in the cooling system (condition: cooling system not working)

Symptom Possible Cause Diagnostics Action

• Check whether the
High pressure at both coolant is dirty or
• Air in the cooling
low and high ends. Air in the cooling inadequate.
system.
Low pressure pipe is system. • Vacuum the system
• Insufficient vacuum.
hot. and refill the
refrigerant.

• Defective expansion valve (condition: ineffective cooling)

Page 2024