處理：檢查管路缺氟，精准測壓查漏，抽真空後定量加注專用雪種，調節製冷壓力恢復製冷。

Solution: Check for refrigerant leakage, pressure test, vacuum pumping, recharge professional refrigerant, adjust cooling pressure.

處理：油跡即漏點，使用專業檢漏儀定位微漏點，焊接修補密封，徹底排空殘餘氣體再加雪種。

Solution: Oil marks indicate leaks. Use professional leak detector to locate micro leaks, weld & seal, fully evacuate before recharging.

處理：屬隱性慢漏，全面檢查銅管、接頭、壓縮機接口，徹底修復所有漏點再重新加注。

Solution: Hidden slow leak. Fully inspect copper pipes, joints, compressor connections, repair all leaks before recharging.

處理：雪種加注量過多 / 不足，排放多餘冷媒，按機型標準配比精準加註，平衡運行壓力。

Solution: Incorrect refrigerant amount. Drain excess, accurately recharge per model standard, balance operating pressure.

處理：管路進氣含水份，先深度抽真空乾燥管路，清理系統雜質，再更換乾燥過濾器後補雪種。

Solution: Moisture in system. Deep vacuum drying, clean impurities, replace dryer filter before recharging refrigerant.

處理：更換老化腐蝕銅管，重做保溫隔熱，整機系統密閉測試無漏後，一次性足量加注雪種。

Solution: Replace corroded copper pipes, reinstall insulation, complete pressure test, fully recharge refrigerant in one go.