🔍 Key Concepts

• Behavior of refrigerant flow in a direct-expansion (DX) system • Normal vs excessive refrigerant indications on different components (compressor, solenoid valve, evaporator, purge) • How temperature and moisture (sweating/frosting/weeping) show up at various points in the system

💭 Think About

• Think about where in the system you would most clearly see the effect of too much refrigerant flow rather than just normal cold operation • Ask yourself which component is designed to be cold and which ones should not normally show extreme temperature changes • Consider how excessive refrigerant affects evaporation and pressure in the low side of the system

✅ Before You Answer

• For each choice, decide: Is this component normally cold, cool, or warm in proper operation? • Ask: Would excessive refrigerant make this part colder than normal, or cause a different symptom (pressure, liquid back) somewhere else? • Eliminate any options that more likely indicate other faults (like air/noncondensables, moisture, or oil issues) instead of high refrigerant flow.