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空調(diào)報(bào)故障L3

發(fā)布時(shí)間:2024-07-05 點(diǎn)擊:158
空調(diào)報(bào)故障l3
現(xiàn)象:空調(diào)不制冷,室內(nèi)機(jī)出風(fēng)口溫度高。檢查發(fā)現(xiàn)室內(nèi)機(jī)風(fēng)扇電機(jī)運(yùn)轉(zhuǎn),但轉(zhuǎn)速慢且無(wú)風(fēng);室外機(jī)的壓縮機(jī)工作正常,但壓縮機(jī)外殼溫度較高。
分析處理過(guò)程及結(jié)論:
(1)經(jīng)查發(fā)現(xiàn)室內(nèi)機(jī)和室外機(jī)都運(yùn)行正常,說(shuō)明空調(diào)系統(tǒng)沒(méi)有發(fā)生故障。首先用萬(wàn)用表測(cè)量室外機(jī)的電源電壓為12v左右(正常應(yīng)為15v),再測(cè)其電流為0.03a左右(正常應(yīng)為0.1a左右)。
(2)然后檢查空調(diào)的電路圖可知該空調(diào)的供電線(xiàn)路中存在一個(gè)保險(xiǎn)絲燒斷的問(wèn)題。由于保險(xiǎn)絲的電阻較小、電流較大而引起的過(guò)載保護(hù)動(dòng)作使壓縮機(jī)停機(jī)并顯示故障代碼l3,此時(shí)可更換同型號(hào)的保險(xiǎn)絲即可排除此故障。(注:在更換時(shí)要注意將原保險(xiǎn)的負(fù)極接好)
(3)最后對(duì)室外機(jī)進(jìn)行檢測(cè)后發(fā)現(xiàn)其壓縮機(jī)電容擊穿導(dǎo)致壓縮機(jī)停運(yùn)并顯示故障代碼l3。
(4)經(jīng)過(guò)以上操作后試機(jī)均能正常工作。
注意事項(xiàng)
1.當(dāng)維修過(guò)程中出現(xiàn)異常情況時(shí)不要自行拆卸或更改線(xiàn)路板上的元件位置和參數(shù)值;如果確實(shí)需要改動(dòng)的話(huà)一定要先切斷電源再進(jìn)行操作;否則可能會(huì)引起嚴(yán)重后果!


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