惠而浦Whirlpool抽油煙機維修｜WT9BTAS抽風量越來越小專修 Whirlpool Rangehood Repair HK | WT9BTAS Weak Suction Fix

故障現象：Symptom: 通電無燈光、無蜂鳴、風扇不啟動No light, no beep, fan won’t start after plug in

原因分析：Cause: 插座斷電 / 插頭鬆脫、機內保險絲熔斷、電源線斷路、主控板供電電容擊穿、地線漏電保護跳閘Dead socket / loose plug, blown fuse, broken power cord, damaged mainboard capacitor, tripped earth leakage protection

用戶自檢方法：Self-Check: 換插座測試；檢查全屋廚電空氣開關；拆機頂接線盒看電源線有無發黑斷線Test different socket; check kitchen circuit breaker; open top wiring box for burnt broken wire

維修更換零件：Spare Parts: 電源線、保險管、主控電路板、降壓電容Power cord, fuse tube, main control board, step-down capacitor

故障現象：Symptom: 觸控無反饋、按鍵錯亂、只有某一檔能用、屏幕不亮No touch feedback, glitch button, single gear only, blank screen

原因分析：Cause: 面板油污滲入短路、觸控晶片損壞、排線鬆脫氧化、電壓衝擊燒壞觸控板Short circuit from grease, broken touch IC, loose oxidized cable, voltage surge damage panel

用戶自檢方法：Self-Check: 用酒精徹底擦拭面板油污；斷電靜置5分鐘復位；重新插緊內部排線Wipe panel grease with alcohol; power off 5 mins reset; re-seat internal flat cable

維修更換零件：Spare Parts: 觸控面板總成、排線、主控板Touch panel assembly, flat cable, main control board

故障現象：Symptom: 按鍵通電有聲，電機悶響，扇葉卡死不動Power on hum sound, impeller locked no rotation

原因分析：Cause: 啟動電容容量衰減擊穿、電機軸承油污卡死、風輪纏保鮮膜/鋼絲球異物、電機繞組開路Failed run capacitor, grease locked bearing, foreign object wrapped impeller, open motor winding

用戶自檢方法：Self-Check: 斷電手動撥動風輪，卡頓=異物/軸承；順滑則電容損壞Power off turn impeller by hand; stuck = foreign / bearing; smooth = broken capacitor

維修更換零件：Spare Parts: 電機啟動電容、風機電機總成Motor run capacitor, blower motor assembly

故障現象：Symptom: 高低檔差距小，爆炒吸力不足，WT9BTAS抽風量持續變細Small speed difference between high/low, weak max power airflow, WT9BTAS air volume drop gradually

原因分析：Cause: 電容容量不足、濾網嚴重堵塞、煙道壓扁堵塞、止回閥粘住、電機軸承磨損阻力大Degraded capacitor, fully clogged filter, crushed duct, stuck non-return valve, worn motor bearing

用戶自檢方法：Self-Check: 拆下濾網清洗；開窗測試吸力，開窗變好=煙道堵塞Remove & wash filters; test suction with window open, better airflow = blocked duct

維修更換零件：Spare Parts: 啟動電容、電機、止回閥葉片Run capacitor, blower motor, non-return valve flap