室外機任何一(yi)個銅(tong)管(guan)(guan)(guan)結(jie)霜(shuang)都是不正常(chang)的(de)(de)，只(zhi)有(you)粗(cu)銅(tong)管(guan)(guan)(guan)結(jie)霜(shuang)才是缺氟(fu)，（粗(cu)銅(tong)管(guan)(guan)(guan)是低壓液體(ti)），只(zhi)有(you)細銅(tong)管(guan)(guan)(guan)結(jie)霜(shuang)說明(ming)(ming)略微缺氟(fu)或(huo)者環境溫度過(guo)低（細銅(tong)管(guan)(guan)(guan)是高壓氣體(ti)），如(ru)果高低壓兩個閥(fa)門都結(jie)霜(shuang)說明(ming)(ming)系(xi)統有(you)二次節流現象，也就是管(guan)(guan)(guan)道堵塞。下(xia)(xia)面介紹一(yi)下(xia)(xia)加(jia)氟(fu)的(de)(de)具體(ti)操(cao)作，我這里也沒有(you)工具，用人家(jia)的(de)(de)圖(tu)片又怕侵權，簡(jian)單敘述一(yi)下(xia)(xia)過(guo)程(cheng)吧，大家(jia)看(kan)著下(xia)(xia)面的(de)(de)外機圖(tu)片:加(jia)氟(fu)從下(xia)(xia)面的(de)(de)粗(cu)銅(tong)管(guan)(guan)(guan)所(suo)在的(de)(de)低壓截止閥(fa)的(de)(de)維修(xiu)(xiu)口處來(lai)加(jia)，粗(cu)銅(tong)管(guan)(guan)(guan)正對著的(de)(de)就是維修(xiu)(xiu)口，用來(lai)加(jia)氟(fu)和抽(chou)真空。

若查(cha)詢到T1、T2傳(chuan)(chuan)感器(qi)溫度值為-66，家(jia)庭空(kong)(kong)調(diao)(diao)價位，則(ze)(ze)說(shuo)明(ming)為空(kong)(kong)調(diao)(diao)室(shi)(shi)(shi)(shi)外(wai)(wai)電控故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障；二十九、室(shi)(shi)(shi)(shi)外(wai)(wai)溫度傳(chuan)(chuan)感器(qi)故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障或(huo)室(shi)(shi)(shi)(shi)外(wai)(wai)E方(fang)參數故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障1、使(shi)用變(bian)頻檢測(ce)小板查(cha)看具體故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障代碼：E50為室(shi)(shi)(shi)(shi)外(wai)(wai)E方(fang)故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障，E52為室(shi)(shi)(shi)(shi)外(wai)(wai)T3傳(chuan)(chuan)感器(qi)故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障，E53為室(shi)(shi)(shi)(shi)外(wai)(wai)T4故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障，E54為室(shi)(shi)(shi)(shi)外(wai)(wai)Tp故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障，E55為室(shi)(shi)(shi)(shi)外(wai)(wai)TH故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障；2、若變(bian)頻空(kong)(kong)調(diao)(diao)檢測(ce)儀顯(xian)(xian)示(shi)E50，家(jia)庭空(kong)(kong)調(diao)(diao)安裝，則(ze)(ze)直接(jie)更(geng)換室(shi)(shi)(shi)(shi)外(wai)(wai)電控；3、若變(bian)頻空(kong)(kong)調(diao)(diao)檢測(ce)儀顯(xian)(xian)示(shi)其他故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障系列，則(ze)(ze)參考(kao)上(shang)述傳(chuan)(chuan)感器(qi)故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障檢測(ce)方(fang)法；三十、模塊(kuai)保護(hu)1、檢查(cha)壓縮(suo)機連(lian)接(jie)線(xian)組是(shi)否(fou)(fou)破皮或(huo)者接(jie)線(xian)位置是(shi)否(fou)(fou)正確(que)可靠，若存在問題則(ze)(ze)進行對應調(diao)(diao)整(zheng)；2、斷開(kai)壓縮(suo)機連(lian)接(jie)線(xian)組，測(ce)量變(bian)頻室(shi)(shi)(shi)(shi)外(wai)(wai)電控盒U、V、W之間阻值是(shi)否(fou)(fou)平(ping)衡，家(jia)庭空(kong)(kong)調(diao)(diao)報價，若不平(ping)衡則(ze)(ze)說(shuo)明(ming)為變(bian)頻室(shi)(shi)(shi)(shi)外(wai)(wai)電控盒故(gu)(gu)(gu)(gu)(gu)(gu)(gu)(gu)障。

安裝中央空(kong)調(diao)(diao)(diao)時(shi)，一般在各通(tong)風(feng)設(she)備的(de)(de)(de)旁邊留下檢(jian)查口，根據機(ji)器(qi)上出現(xian)(xian)的(de)(de)(de)錯誤代碼發(fa)現(xian)(xian)故障點，進(jin)行修理。因為一般機(ji)器(qi)的(de)(de)(de)零(ling)件在右側，所以(yi)檢(jian)查很容易，老撾家庭(ting)空(kong)調(diao)(diao)(diao)，不需(xu)要(yao)像以(yi)前那樣(yang)拆除(chu)整(zheng)個天(tian)花(hua)的(de)(de)(de)天(tian)花(hua)板。后期發(fa)生空(kong)調(diao)(diao)(diao)售后維修服(fu)務問(wen)題(ti)的(de)(de)(de)概率又(you)下降了(le)；中央空(kong)調(diao)(diao)(diao)有(you)問(wen)題(ti)的(de)(de)(de)只有(you)內機(ji)和外(wai)(wai)機(ji)，外(wai)(wai)機(ji)當然可以(yi)直(zhi)接維護(hu)。內機(ji)的(de)(de)(de)情況(kuang)下，一般要(yao)確保檢(jian)查口。所以(yi)，選(xuan)擇中央空(kong)調(diao)(diao)(diao)是個好(hao)選(xuan)擇，比家用儲物柜的(de)(de)(de)掛機(ji)貴多了(le)。一、保險絲(si)管1、 保險絲(si)管在電(dian)腦板上用FC1.2（FUSE）表(biao)示，主要(yao)用于起過電(dian)流保護(hu)。