成因：蒸汽閥老化、密封膠圈硬化、管路水垢卡滾珠；維修方案更換閥芯+膠圈、全管路除垢清洗

Cause: Worn steam valve, hardened rubber seal, limescale stuck pipe. Solution: Replace valve core & seal, full pipe descaling

成因：鍋爐加熱管水垢堵塞、壓力泵故障、蒸汽閥卡死、溫控器失靈；需拆解管路深度清潔

Cause: Boiler pipe limescale block, broken pressure pump, stuck steam valve, faulty thermostat. Full pipe disassembly cleaning required

管路水垢縮小通道、鍋爐壓力不足；定期3個月除垢保養可預防

Limescale narrow pipe, low boiler pressure; descaling every 3 months prevents issue

分水網堵塞、沖煮頭積咖啡油垢、水泵壓力衰減

Clogged shower screen, coffee oil block group head, degraded pump pressure

鍋爐接口膠圈老化、水管龜裂、接頭鬆動

Aged boiler seal, cracked tube, loose pipe connector

加熱管水垢包覆、加熱絲老化、溫控感應器故障

Heating tube covered limescale, worn heating element, faulty temperature sensor

水泵積水垢、避震墊老化、管路共振

Limescale inside pump, worn shock pad, pipe resonance

蒸汽頭小孔堵塞、內部積碳咖啡油脂

Clogged steam tip holes, built coffee grease carbon inside wand

咖啡粉積垢硬化、分水網完全封死

Hardened coffee residue, fully blocked shower screen

加熱元件短路、線路受潮漏水、主板漏電

Short circuit heating element, damp wiring, leakage mainboard

壓力傳感器故障、水泵輸出壓力衰減、壓力管堵塞

Faulty pressure sensor, degraded pump output, blocked pressure tube

浮球水垢卡滯、水位感應器氧化

Limescale stuck float, oxidized water level sensor

轉軸積咖啡油脂、金屬生鏽卡緊

Coffee grease built pivot, rust jam rotation shaft

沖煮頭油垢堵塞、溫度不穩、管路殘留舊咖啡油

Clogged group head grease, unstable temp, old coffee oil inside pipe

保溫層老化、密封閥洩壓、溫控主板故障

Aged insulation, pressure leak valve, faulty main control board

閥芯水垢卡死、熱水管路堵塞

Limescale jam valve core, blocked hot water pipeline

線路高溫老化、加熱元件接頭燒蝕、殘留咖啡渣高溫碳化

Aged hot wiring, burnt heating connector, carbonized coffee residue

把手螺絲滑牙、閥芯齒輪磨損

Stripped knob screw, worn valve gear

未定期除垢保養是主因；建議硬水地區每2個月完整管路清洗

Caused by missing regular descaling; full pipe clean every 2 months for hard water HK area

每日：沖煮頭清洗、蒸汽棒擦拭；每週：分水網拆卸浸泡；每月：淺層除垢；每2-3個月：全機管路深度拆解清潔；每年：更換全部密封膠圈預防滴水故障

Daily: Group head flush, steam wand wipe; Weekly: Shower screen soak; Monthly: Light descaling; Every 2-3 months: Full pipe disassembly deep clean; Yearly: Replace all rubber seals to avoid leaking