This is an Emergency-Level Problem
Do NOT delay — switch off your unit and call KL Renovator now.
Aircond Outdoor Unit Not Running — Diagnosis & Repair in KL & Selangor
🇲🇾 Unit Luar Aircond Tidak Berfungsi · 🇨🇳 冷气室外机不运转
An outdoor unit that does not start or run usually indicates a compressor, fan motor or capacitor failure. KL Renovator diagnoses and repairs outdoor unit problems for all brands across KL and Selangor.
Unit luar yang tidak mula atau tidak berjalan biasanya menunjukkan kegagalan kompressor, motor kipas atau kapasitor.
室外机无法启动或运行通常表示压缩机、风扇电机或电容器故障。KL Renovator 诊断并修复所有品牌的室外机问题。
Direct Answer · Jawapan Terus · 直接解答
If the indoor unit powers on but the outdoor unit stays completely silent, the most likely causes are a tripped overload protector, a failed compressor start capacitor, or a contactor relay fault — all are diagnosable and fixable same-day in most cases, well short of a full compressor failure.
Jika unit dalam menghidupkan tetapi unit luar kekal senyap sepenuhnya, punca paling mungkin adalah overload protector trip, kapasitor mula pekali gagal, atau kerosakan geganti kontaktor.
如果室内机能开启但室外机完全没有反应，最可能的原因是过载保护器跳闸、压缩机启动电容器故障或接触器继电器故障。
Important
If the indoor unit is on but the outdoor unit is not running, the system is not cooling at all. Running the indoor unit alone wastes electricity and does not cool the room. Switch off the system and call KL Renovator.
Jika unit dalam hidup tetapi unit luar tidak berjalan, sistem tidak menyejuk sama sekali. Menjalankan unit dalam sahaja membuang elektrik. Matikan sistem dan hubungi KL Renovator.
如果室内机开着但室外机不运转，系统完全无法制冷。单独运行室内机会浪费电力。关闭系统并联系KL Renovator。
Before You Book
DIY-Safe Checks vs What Needs a Technician
Safe To Check Yourself
- 1Confirm the indoor unit's fan and display are working normally
- 2Listen for any sound at all from the outdoor unit (humming, clicking) versus complete silence
- 3Check the outdoor unit's isolator switch hasn't been accidentally switched off
Bahasa Malaysia & 中文 ›
🇲🇾 Sahkan kipas dan paparan unit dalam berfungsi normal
🇲🇾 Dengar sebarang bunyi dari unit luar berbanding senyap sepenuhnya
🇲🇾 Semak unit luar's isolator switch hasn't been accidentally switched off
🇨🇳 确认室内机风扇和显示屏运行正常
🇨🇳 留意室外机是否发出任何声音还是完全静音
🇨🇳 由技师进行针对性现场检测，确认根因后再报价维修
Technician-Only Diagnosis
- 1Overload protector (thermal relay) test and reset, common cause of a silent outdoor unit after overheating
- 2Contactor relay inspection for burnt or stuck contacts preventing power reaching the compressor and fan
- 3Compressor start capacitor and run capacitor testing
Bahasa Malaysia & 中文 ›
🇲🇾 Ujian dan reset overload protector (geganti terma)
🇲🇾 Pemeriksaan geganti kontaktor untuk sentuhan terbakar atau tersekat
🇲🇾 Diagnosis penuh di tapak dengan sebut harga disahkan sebelum ganti parts
🇨🇳 测试并复位过载保护器（热继电器）
🇨🇳 检查接触器继电器是否有烧毁或卡住的触点
🇨🇳 技师检测电容器容值/电压，老化电容常被误判为缺气
Root Causes — English
What Causes Aircond Outdoor Unit Not Running?
- 1Failed outdoor fan motor — outdoor unit does not run, compressor overheats quickly
- 2Tripped thermal overload protector on the compressor — needs to cool down before restarting
- 3Failed compressor start capacitor — compressor hums but outdoor unit does not start
- 4PCB fault — outdoor unit receives no start signal from indoor PCB
- 5Contactor failure — compressor does not receive electrical power despite PCB command
Punca Masalah — Bahasa Malaysia
Apakah Punca Unit Luar Aircond Tidak Berfungsi?
- 1Motor kipas luar gagal — unit luar tidak berjalan, pekali cepat terlampau panas
- 2Pelindung bebanan terma pekali terjatuh — perlu sejuk sebelum memulakan semula
- 3Kapasitor permulaan pekali gagal — pekali berdengung tetapi unit luar tidak bermula
- 4Kerosakan PCB — unit luar tidak menerima isyarat permulaan dari PCB dalam
- 5Kegagalan kontraktor — pekali tidak menerima kuasa elektrik walaupun ada arahan PCB
原因分析 — 冷气室外机不运转
The Fix
How KL Renovator Fixes Aircond Outdoor Unit Not Running
🇬🇧 English
KL Renovator checks whether the outdoor fan motor runs, tests the compressor capacitor, measures compressor amperage, and tests contactor continuity. If the thermal overload has tripped, we let the unit cool and retest. Most causes — capacitor, contactor, fan motor — are repaired same-day. Compressor failure is quoted separately before work begins.
🇲🇾 Bahasa Malaysia
KL Renovator memeriksa sama ada motor kipas luar berjalan, menguji kapasitor pekali, mengukur ampere pekali, dan menguji kekuatan kontraktor. Kebanyakan punca — kapasitor, kontraktor, motor kipas — dibaiki hari sama.
🇨🇳 中文
KL Renovator检查室外风扇电机是否运转，测试压缩机电容器，测量压缩机电流，并测试接触器连续性。大多数原因——电容器、接触器、风扇电机——当天可修复。压缩机故障另行报价。
Typical Pricing
*Waived if repair done same visit
Related Symptom Groups
More Problems in the Same Cluster
Noise & Mechanical Failures
Strange noises, dead fan motors, outdoor unit stoppage, compressor or PCB faults — parts quoted before work.
All problem hubs →Recommended Services · Perkhidmatan Disyorkan · 推荐服务
Best Fix
Troubleshooting & Repairs
Systematic electrical and mechanical diagnosis for any aircond fault. Error codes decoded, faults pinpointed, transparent quotes. RM 88 diagnostic waived with repair.
FAQs · Soalan Lazim · 常见问答
Aircond Outdoor Unit Not Running Questions Answered
My aircond indoor unit is on but the outdoor unit is not running — what is wrong?
Most likely: failed capacitor (RM 180), tripped thermal overload (let cool 30 min then retry), contactor failure (RM 150–250), or PCB fault. KL Renovator diagnoses on-site. Do not keep running the indoor unit alone.
How much does it cost to fix an outdoor unit that is not running?
Capacitor: RM 180. Contactor: RM 150–250. Fan motor: RM 300–450. PCB: RM 300–600. Compressor: RM 600–2,000. KL Renovator diagnoses first and quotes before work.
Can KL Renovator fix outdoor unit problems same-day?
Yes — KL Renovator carries capacitors, contactors and common fan motor sizes for same-day repair. WhatsApp +60182983573 with your brand and HP size for fastest dispatch.
Is a silent outdoor unit always a compressor failure?
No — a capacitor, contactor, or overload protector fault can all cause complete silence, and all are cheaper to fix than compressor replacement.
Why would the outdoor unit trip on overload specifically in hot weather?
Outdoor units work harder on hot days, and added strain can push them into overload protection.
How urgent is a silent outdoor unit?
Moderately urgent — it wastes electricity and leaves you without functioning AC, but isn't a safety emergency.
Can I reset the outdoor unit myself?
You can try switching off at the MCB for a few minutes. If it trips again shortly after, the underlying fault needs a technician.
🇲🇾 Bahasa Malaysia
Unit dalam aircond hidup tetapi unit luar tidak berjalan — apa yang salah?
Kemungkinan besar: kapasitor gagal (RM 180), pelindung terma terjatuh (biar sejuk 30 minit), kegagalan kontraktor (RM 150–250), atau kerosakan PCB. KL Renovator mendiagnosis di tempat.
Berapa kos membaiki unit luar yang tidak berjalan?
Kapasitor: RM 180. Kontraktor: RM 150–250. Motor kipas: RM 300–450. PCB: RM 300–600. KL Renovator mendiagnosis dahulu dan mengutip sebelum kerja.
Adakah unit luar senyap sentiasa kegagalan pekali?
Tidak — kerosakan kapasitor, kontaktor, atau overload protector semuanya boleh menyebabkan senyap sepenuhnya.
Kenapa unit luar trip overload khususnya dalam cuaca panas?
Unit luar bekerja lebih keras pada hari sangat panas, tekanan tambahan boleh menyebabkan mod perlindungan overload.
🇨🇳 中文
室内机开着但室外机不运转——是什么问题？
最有可能：电容器失效（RM 180）、热过载保护器跳停（冷却30分钟后重试）、接触器故障（RM 150-250）或PCB故障。KL Renovator上门诊断。
修复不运转的室外机需要多少费用？
电容器：RM 180。接触器：RM 150-250。风扇电机：RM 300-450。PCB：RM 300-600。KL Renovator先诊断后报价。
室外机静音一定是压缩机故障吗？
不一定——电容器、接触器或过载保护器故障都可能导致完全静音，维修费用都远低于更换压缩机。
为什么室外机特别在炎热天气会过载跳闸？
炎热天气下室外机需要更努力散热，额外负荷可能触发过载保护。
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Unit Luar Aircond Tidak Berfungsi · 冷气室外机不运转
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