Page 2025 - Foton Workshop Manual - Tunland (AT)

HEATER AND AIR CONDITIONING - REFRIGERANT 61-29

61

Symptom Possible Cause Diagnostics Action
• Check and replace
• Overly refrigerant in the expansion
High pressure at both
the low pressure valve.
high and low ends. Defective expansion pipe • Ensure the
Frost or dew at the valve
• Dirty or blocked refrigerant volume
low end.
expansion valve. in the system meets
the standard.

• Defective compressor (condition: no cooling)

Symptom Possible Cause Diagnostics Action
• Defective • Repair or replace
Overly high at the low compressor.
Internal leakage in the compressor.
end and overly low at • Leakage in the
compressor • Eliminate the
the high end. damaged valve or system leakage.
moving part.

2 . Check for leakage with soap solution

Page 2025