Page 1308 - Foton Workshop Manual - Aumark (BJ1099)

41-28 HEATING AND AIR CONDITIONING - REFRIGERANT

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

Symptom Possible Cause Diagnostics Action

• Check the expansion
valve.
•Blow off the dirt inside
Vaccum at the low end •The flow of the refrigerant the expansion valve
and low pressure at the is blocked by steam or with compressed air.
high end. Frost or dew dirt. Refrigerant unable to •Replace the condenser.
on the pipes before and •The flow of the refrigerant circulate • Vacuum the system
after the condensing/ is intervened by leakage and Add some
drying can or expansion in the expansion valve. refrigerant.
valve.
•If any leakage in the
expansion valve,
replace it.

• Overly refrigerant or poor radiation of condenser (condition: ineffective cooling)

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