1、上下水(shui)(shui)管(guan)路在(zai)嚴(yan)冬(dong)凍(dong)結。2、天(tian)氣過冷。3、沒(mei)有(you)保溫。這時可(ke)由經銷商對其(qi)(qi)管(guan)道進行保溫，也可(ke)用(yong)(yong)電熱(re)(re)防凍(dong)帶（板）加熱(re)(re)管(guan)道。另外使用(yong)(yong)要有(you)技巧：一是晚間(jian)用(yong)(yong)完熱(re)(re)水(shui)(shui)放(fang)空水(shui)(shui)箱，次日清晨上水(shui)(shui)。二是在(zai)最冷幾天(tian)晚間(jian)打開熱(re)(re)水(shui)(shui)閥(fa)緩(huan)緩(huan)滴出熱(re)(re)水(shui)(shui)防凍(dong)。現(xian)(xian)在(zai)許多廠家在(zai)設(she)計理念上，強調以冬(dong)季好用(yong)(yong)為標(biao)準，太(tai)陽(yang)能(neng)熱(re)(re)水(shui)(shui)器有(you)絕熱(re)(re)水(shui)(shui)箱冬(dong)天(tian)也越來越好用(yong)(yong)了。其(qi)(qi)實太(tai)陽(yang)能(neng)無論主機出現(xian)(xian)故障，還是其(qi)(qi)他電熱(re)(re)帶、輔助(zhu)電加熱(re)(re)出現(xian)(xian)問題，都要請專業(ye)人士來維修，也建(jian)議(yi)廣大用(yong)(yong)戶購(gou)買太(tai)陽(yang)能(neng)時要選(xuan)擇有(you)實力的廠家，其(qi)(qi)售(shou)后(hou)服務是有(you)保證的。