Daikin not cooling, leaking, showing a fault code or refusing to start? Here are the faults a Daikin typically develops, how it signals them, and what a fair repair costs in the Klang Valley.
Daikin is one of the most widely fitted aircon brands in Malaysian homes, and its inverter wall units in particular are everywhere across the Klang Valley. The good news for owners is that Daikin units are well supported here, parts are generally available, and the great majority of faults are routine wear — a start capacitor, a fan bearing, a clogged drainage tray, a slow refrigerant leak — rather than a failed machine. This guide covers the faults a Daikin typically develops, how the unit tells you something is wrong, and what a fair repair costs, so you can tell an honest quote from an upsell before anyone opens the cover. It sits alongside our general aircon repair hub, which routes any brand by symptom.
Across Daikin wall and cassette units, the same handful of complaints come up again and again:
| Symptom | Usual Daikin cause | Typical fix |
|---|---|---|
| Cooling gone weak, room stays warm | Dirty coil, or low gas from a slow leak | Chemical wash, or leak find-and-repair |
| Water dripping from the indoor unit | Blocked drainage tray / pipe | Clear & flush drainage |
| Unit shows a fault code and stops | Sensor, board or protection trip | Read the code, diagnose the cause |
| Swing louvre stuck or not moving | Swing motor or linkage | Replace the swing motor / relink |
| Won’t start, or trips the breaker | Start capacitor or electrical fault | Capacitor swap or electrical repair |
| Outdoor unit noisy or vibrating | Fan bearing or compressor mount | Replace bearing / mount |
None of these means the aircon is finished. The one to weigh carefully is a compressor fault on an older unit — covered under repair-or-replace below.
One thing Daikin does well is tell you something is wrong: many Daikin indoor units and their remotes display a short error or fault code when the unit detects a problem, and the outdoor unit may blink an indicator lamp. The important, honest point is what to do with that code — and what not to do. Note the exact code the unit is showing and quote it to your technician (or send us a photo of the display); it narrows the diagnosis and helps confirm the fault before any part is touched. What you should be wary of is anyone who reads a code and jumps straight to “needs gas” without showing you a pressure reading, because a code is a starting point for diagnosis, not a licence to upsell. We do not publish guessed code-to-fault meanings here for the simple reason that acting on a mis-read code wastes your money; the reliable path is to record the code and diagnose it on the unit.
A Daikin that runs but will not cool is, more often than not, simply dirty — the evaporator coil and blower fill with mould and dust in our humidity until they can no longer move heat, and a proper chemical wash restores cooling on its own. The next most likely cause is low refrigerant from a slow leak, which must be found and repaired rather than repeatedly topped up, since a sealed system does not consume gas. On older units a weakening compressor or a failing capacitor can also sap cooling. Because “not cold” has several causes, we run through them in diagnostic order in the aircon not cooling guide — worth reading before you accept any “top-up” on a Daikin.
Water dribbling from a Daikin indoor unit is almost always a blocked drainage tray or pipe, not a refrigerant problem — mould and dust clog the drain channel, condensation cannot escape, and it overflows into the room. Clearing and flushing the drainage, part of a chemical service, normally fixes it. Two look-alikes are worth ruling out: condensation sweating off the copper pipe can mimic a drip, and a wet ceiling stain may be a building leak unrelated to the aircon — our aircon leak vs pipe leak guide shows how to tell the two apart before anyone opens a ceiling.
A dead Daikin, or one that trips the switchboard as it starts, is an electrical fault rather than a cooling one. The common, inexpensive culprit is an aged start capacitor that can no longer kick the motor over. More serious is a unit that trips the breaker every time the compressor engages, or any burning smell — those point to an earth-leakage, wiring or compressor-start fault that needs proper inspection, and you should not keep resetting the breaker to force it on. Where the aircon shares a strained circuit or the home’s wiring is dated, the electrical side is covered in our house rewiring guide and through our electrical services.
Daikin’s inverter models vary compressor speed for efficiency, which means an electronic control board and a set of sensors do more of the work — and occasionally develop faults, especially after years of heat, dust and the odd power surge. Symptoms include the unit shutting down and displaying a code, cooling that comes and goes, or the outdoor unit not running while the indoor fan does. These need a technician to read the fault, test the sensors and the board, and decide whether a repair or a board replacement is the sensible call. A surge-related board failure is a good argument for proper electrical protection on the circuit, so the replacement board does not meet the same fate.
Daikin repair prices track the failed part, not the badge (market estimate 2026, indicative Klang Valley):
| Repair | Indicative price | Notes |
|---|---|---|
| Diagnostic visit | RM60 – RM120 | Often credited against the repair |
| Start capacitor | RM120 – RM280 | Common “won’t start / weak” fix |
| Swing motor / louvre | RM180 – RM400 | Part-dependent |
| Fan motor | RM250 – RM600 | Indoor blower or outdoor fan |
| Refrigerant leak find & repair | RM300 – RM800 | Find, fix, then re-gas — not a bare top-up |
| Inverter control board | RM300 – RM900 | Wide band; quoted after inspection |
| Compressor | Quoted after inspection | Repair-vs-replace territory on older units |
A bare gas “top-up” is often pitched around RM80–RM200, but on a Daikin as on any brand, paying for gas without fixing the leak buys the same fault back within months.
For a common part like a capacitor or a fan motor, a good-quality compatible component is usually fine and cheaper. For control boards, sensors and anything integral to the inverter system, a genuine Daikin part — or a properly matched equivalent — is the safer choice, because a mismatched board can throw new faults and shorten the unit’s life. The honest position is to match the part to the job: no need to overpay for a genuine badge on a simple capacitor, but no cutting corners on the electronics that run the compressor. We tell you which is which, and price both openly, rather than defaulting to the most expensive option on every line.
Most Daikin repairs are worth doing — the units are durable and parts are available. The decision tips toward replacement only when an older machine’s compressor fails, since that is the costliest component and a new inverter unit will cut the running cost of a hard-working bedroom aircon noticeably. Weigh the unit’s age, how many faults it has had recently, whether it is an older non-inverter model, and your electricity bill. We give the honest read at the quote: often the right answer is to repair a sound Daikin for several more years, and occasionally it is not to spend big on a dying compressor.
Most of the Daikin faults above are avoidable with routine care. Regular filter washes and a periodic chemical wash keep the coil, blower and drainage clear, which prevents the weak-cooling, dripping and smell complaints outright and eases the load on the compressor and board. Catching a bearing noise or a slow drainage clog early turns a big repair into a small one. For what routine servicing itself should cost, see the aircon servicing cost guide; a serviced Daikin simply fails far less often.
ClickBina repairs and services Daikin air conditioners across Kuala Lumpur and Selangor — reading the fault properly, pricing the real repair, and refusing the fake gas top-up. From a stuck swing louvre to an inverter-board fault or an overdue chemical wash, it is one team and one WhatsApp thread, and you can budget the wider job with our free cost tools. Send us a photo of the unit — and of any code on the display — and we will tell you the likely fault and a fair price before we visit.
Tell us what you need — we reply within the hour.