Aircond Problem Diagnosis
Common Aircond Problems KL & Selangor
KL Renovator diagnoses and fixes all common aircond problems across Kuala Lumpur and Selangor. Find your problem below — each guide explains the cause, fix, and pricing.
All Problems
Select Your Aircond Problem
Problem Clusters
Browse by Symptom Group
Related aircond faults grouped so you can jump to the right fix, service, and guide faster.
Cooling Performance Issues
Not cold, weak airflow, ice build-up, or high TNB bills — usually dirty coils, low gas, or airflow restriction.
Pressure Chemical WashWater Leaking & Drainage
Dripping indoor units and blocked drain lines — fixed with deep cleaning or full overhaul when mould and sludge return.
Chemical OverhaulGas & Refrigerant Issues
Low cooling from R22 / R410A / R32 imbalance or leaks — precision top-up only after leak checks.
Gas Top-Up / Precision BalancingElectrical & Startup Faults
Won’t start, MCB trips, blinking error lights, remote or thermostat faults — diagnosed before parts are replaced.
- Aircond Tripping Power
- Aircond Remote Not Working
- Aircond Not Turning On
- Aircond Blinking Light Error
- Aircond Thermostat Problems
Noise & Mechanical Failures
Strange noises, dead fan motors, outdoor unit stoppage, compressor or PCB faults — parts quoted before work.
- Aircond Making Noise
- Aircond Compressor Problem
- Aircond PCB Problem
- Aircond Fan Not Working
- Aircond Outdoor Unit Not Running
Smell & Air Quality
Musty or foul smell when the unit starts — mould on the coil and blower, cleared with pressure chemical wash.
Pressure Chemical WashQuick Answers
Most Common Aircond Questions
My aircond is running but not cold. What should I do?
The most likely causes are low refrigerant gas, a dirty evaporator coil, or a failing capacitor. WhatsApp KL Renovator at +60182983573 with your unit HP and area — a technician will diagnose and quote before starting.
My aircond is dripping water. Is it dangerous?
Water dripping from the indoor unit is caused by a blocked drain pipe or dirty drain pan. It is not immediately dangerous but should be fixed promptly — prolonged leaking causes mould growth and potential ceiling/electrical damage.
My aircond smells bad when it turns on. What causes it?
Bad smell is caused by mould and bacteria on the evaporator coil. A chemical wash (from RM 120) kills the mould and eliminates the smell permanently. If the smell is like burning, switch off the unit and call immediately.
My aircond light is blinking and it stopped working. What is the error?
Blinking lights are error codes from the PCB. The pattern of blinks indicates a specific fault — low gas, dirty sensor, communication error, or PCB failure. KL Renovator reads the error code and diagnoses the root cause.
Why is my electricity bill high after using the aircond?
A dirty aircond coil or low refrigerant forces the compressor to work harder, consuming more electricity. A chemical wash or gas top-up can significantly reduce running costs.
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Same-day service across KL & Selangor. Transparent quote before work starts. All brands.