制(zhi)冷(leng)系(xi)統(tong)內制(zhi)冷(leng)劑(ji)不(bu)(bu)足(zu);補(bu)充(chong)制(zhi)冷(leng)劑(ji)。蒸發器內制(zhi)冷(leng)劑(ji)不(bu)(bu)足(zu);開大節(jie)流閥、增加(jia)供(gong)液。制(zhi)冷(leng)系(xi)統(tong)吸氣管(guan)路保溫隔熱不(bu)(bu)好;檢查修理。制(zhi)冷(leng)劑(ji)中含水量超(chao)標(biao);檢查制(zhi)冷(leng)劑(ji)含水量。節(jie)流閥開度小,供(gong)液量小;開大節(jie)流閥、加(jia)大供(gong)液量。