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Aircond Problem Diagnosis
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
Problem Clusters
Related aircond faults grouped so you can jump to the right fix, service, and guide faster.
Not cold, weak airflow, ice build-up, or high TNB bills — usually dirty coils, low gas, or airflow restriction.
Pressure Chemical WashDripping indoor units and blocked drain lines — fixed with deep cleaning or full overhaul when mould and sludge return.
Chemical Overhaul (Wall-Mounted Aircon only)Low cooling from R22 / R410A / R32 imbalance or leaks — precision top-up only after leak checks.
Gas Top-Up / Precision BalancingWon’t start, MCB trips, blinking error lights, remote or thermostat faults — diagnosed before parts are replaced.
Strange noises, dead fan motors, outdoor unit stoppage, compressor or PCB faults — parts quoted before work.
Musty or foul smell when the unit starts — mould on the coil and blower, cleared with pressure chemical wash.
Pressure Chemical WashQuick Answers
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.
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.
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.
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.
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.
Same-day service across KL & Selangor. Transparent quote before work starts. All brands.