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Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed.
Replacement 1. Discharge refrigerant from refrigeration system. 2. Replace faulty tube or hose. Cap the open fittings immediately to keep moisture or dirt out of the system.
C
Inspection Self diagnosis 1. Self-diagnosis process 2. How to read self-diagnostic code. After the display panel flickers three times every 0.5 second, the corresponding fault code flickers on the setup temperature display panel every 0.