Expert Aircond Repair & Troubleshooting in Petaling Jaya

Expert Aircond Repair When You Need It Most

There is nothing worse than your air conditioner breaking down in the middle of a Malaysian afternoon. Whether your unit has stopped cooling, is making strange noises, leaking water or will not turn on at all, you need a reliable technician who can diagnose the problem quickly and fix it right the first time.

At PJ Kool Aircond Service, our senior technicians have been diagnosing and repairing aircond faults across Petaling Jaya, Damansara, Subang and Puchong for over 20 years. We have seen every possible fault condition — from simple capacitor replacements to complex circuit board failures — and we know how to resolve them efficiently and affordably.

How Our Repair Process Works

RM50 Diagnostic — Waived with Repair

We charge a straightforward RM50 diagnostic fee that covers our technician’s visit and a thorough inspection of your faulty unit. If you decide to proceed with the recommended repair, the RM50 is fully waived — so you effectively pay nothing for the diagnosis.

This approach ensures that you get an expert opinion on your aircond problem without committing to any repair cost upfront. Our technician will explain the fault clearly, show you the evidence where possible and provide a written quotation for the repair work.

What We Diagnose

Our diagnostic assessment covers all the critical systems of your aircond unit:

Electrical System — We test the circuit board, capacitors, relays and wiring for faults. Electrical issues are among the most common causes of aircond failure, particularly after power surges or lightning strikes — both common occurrences in Malaysia’s thunderstorm season.

Sensors & Thermistors — Faulty temperature sensors can cause your aircond to blow warm air, short-cycle (turn on and off repeatedly) or display error codes on the remote. We test each sensor and replace defective ones with genuine components.

Compressor Health — The compressor is the most expensive component in your aircond. We check compressor amperage, startup behaviour and pressure readings to determine whether it is functioning correctly. If a compressor is failing, we will give you an honest assessment of whether repair or replacement is the more cost-effective option.

Refrigerant System — Low refrigerant is a common cause of poor cooling, but it is often a symptom of a leak rather than a standalone problem. We check refrigerant pressure and perform leak detection to identify whether your unit simply needs a top-up or has an underlying leak that must be repaired first.

Drainage System — Water leaks from the indoor unit are one of the most frequent complaints we receive. We inspect the drainage tray, pipe and outlet for blockages, cracks or improper installation that may be causing water to overflow.

Common Aircond Problems We Fix

Over two decades of servicing homes and businesses in the Klang Valley, these are the most common repair issues our technicians encounter:

Unit Not Cooling Properly

This can be caused by low refrigerant, a dirty evaporator coil, a faulty compressor, or a defective expansion valve. Our diagnostic process identifies the root cause so we fix the right problem.

Water Leaking from Indoor Unit

Usually caused by a blocked drainage pipe, cracked drainage tray, or improper unit installation. In humid Malaysian conditions, algae and mould grow rapidly inside drainage lines, making this one of the most common issues we resolve.

Strange Noises

Rattling, buzzing, clicking or grinding sounds typically indicate a loose component, failing fan motor, or debris caught in the blower wheel. Early diagnosis prevents minor issues from becoming major faults.

Unit Not Turning On

This could be an electrical issue — blown fuse, tripped circuit breaker, faulty circuit board or defective capacitor. Our technicians carry common replacement parts and can often resolve electrical faults on the same visit.

Error Codes on Remote or Display

Modern aircond units display error codes that indicate specific faults. Our technicians are familiar with error code systems from all major brands and can quickly translate these codes into actionable diagnosis. See our guide on common Daikin and Panasonic error codes if you want to understand what the blinking lights mean before we arrive.

Transparent Pricing — No Surprises

We believe in complete transparency. After diagnosing the fault, our technician will:

1. Explain what is wrong in plain language
2. Show you the faulty component where possible
3. Provide a written repair quotation
4. Let you decide — no pressure, no hard sell

If the repair cost is unreasonably high compared to the age and value of the unit, we will tell you honestly and discuss replacement options instead. Your trust is worth more to us than any single repair job.

Fast Response Across Petaling Jaya

We provide repair and diagnostic services across Petaling Jaya (SS2, Taman SEA, Damansara Utama, Damansara Jaya, Kelana Jaya), Bandar Utama, Kota Damansara, Subang Jaya, USJ, Puchong, Bandar Sunway and surrounding areas.

For urgent repairs, contact us via WhatsApp for the fastest response. We aim to schedule diagnostic visits within 24 to 48 hours, with same-day availability in many cases. When your aircond breaks down, you can count on PJ Kool Aircond Service to get it running again — quickly, honestly and affordably.