Page 1309 - Foton Workshop Manual - Aumark (BJ1099)

HEATING AND AIR CONDITIONING - REFRIGERANT 41-29

Symptom Possible Cause Diagnostics Action

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

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

41

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

• Defective expansion valve (condition: ineffective cooling)

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