Page 2021 - Workshop Manual - Tunland (2017)

HEATER AND AIR CONDITIONING - REFRIGERANT 61-15

Symptom Possible Cause Diagnostics Action
expansion valve
with compressed
air. 61
blocked by steam • Replace the
or dirt. condenser.
condensing/drying • The flow of the • Vacuum the system
can or expansion refrigerant is and Add some
valve. intervened by refrigerant.
leakage in the • If any leakage in
expansion valve. the expansion
valve, replace it.
• Check for leaking
points.

• Unsmooth circulation of refrigerant (condition: ineffective cooling system)

Symptom Possible Cause Diagnostics Action

Low pressure at both • Replaced the
high and low ends. Refrigerant blocked damaged parts
System blocked
Frost on the by dirt • Replace the
condenser pipe. condenser

• Refrigerant not circulating (condition: cooling system works intermittently)