Licensed Daikin technicians servicing Australian homes and businesses. Every model. Every series — Cora, Alira X, Zena, US7, FTXM, and City Multi. Same-day service. Upfront pricing. Call 1300 019 320.
Cora, Alira X, Zena, US7, FTXM & more
Available in most service areas
OEM-approved replacement components
1300 019 320 — always available
On every installation and repair
Daikin is the world's largest dedicated air conditioning manufacturer — and in Australia, Daikin is the number one selling brand, trusted by more households and businesses than any other. Founded in Japan in 1924 and operating in Australia for over 50 years, Daikin has built a reputation for outstanding energy efficiency, long-term reliability, and genuine innovation in inverter and refrigerant technology.
From the popular Daikin Cora split system in bedrooms to the sophisticated Daikin VRV commercial system in office buildings, Daikin air conditioners are engineered to handle Australia's extreme climate — from tropical Queensland summers to frosty Victorian winters. Daikin split systems hold some of the highest energy star ratings available in Australia, including the market-leading Daikin US7 7-star split system.
At WTFix Air, we are experienced across the full Daikin product range — residential split systems, multi-split systems, ducted systems, ceiling cassettes, and commercial VRV systems. Our technicians understand Daikin's proprietary inverter technology, refrigerant systems, and error code library, ensuring fast, accurate diagnosis and effective repairs every time.
Japan — world's largest dedicated air conditioning manufacturer since 1924, operating in Australia for over 50 years
Market-leading efficiency — the Daikin US7 achieves a 7-star energy rating, the highest available for split systems in Australia
Daikin reverse cycle systems operate efficiently from -15°C to +46°C outside — suited to every Australian climate zone
Daikin split systems are approved by the National Asthma Council's Sensitive Choice program for superior air filtration
Daikin Mobile Controller app, Wi-Fi adaptor, weekly scheduling, and smart home integration across most models
5-year parts and labour warranty on most Daikin residential systems — one of the strongest warranties in the industry
We install, service, and repair every series in the Daikin air conditioning range — from the entry-level Daikin Cora to the world-leading Daikin US7 and large-scale commercial VRV systems.
7-Star Flagship Split System
The Daikin US7 is the most energy-efficient split system available in Australia — achieving a 7-star energy rating for both heating and cooling. Featuring Daikin's revolutionary Streamer air purification technology, built-in Wi-Fi, humidifying and dehumidifying functions, and a thermal sensor for intelligent comfort control. The benchmark for residential performance.
Premium Residential Split System
The Daikin Alira X is the top choice for Australian homeowners seeking premium performance at a mid-range price point. With outstanding energy efficiency ratings, built-in Wi-Fi, Streamer air purification, and intelligent weekly scheduling, the Alira X delivers sophisticated comfort control in a refined, low-profile design. Available from 2.5kW to 9.4kW.
Everyday Residential Split System
The Daikin Cora is Australia's best-selling Daikin split system — offering excellent energy efficiency, whisper-quiet operation, and a flat-panel design that suits any home. With a 5-star energy rating, weekly timer, sleep mode, and optional Wi-Fi adaptor, the Cora is the go-to choice for bedrooms, living areas, and apartments. Available from 2.5kW to 9.4kW.
Designer Wall-Hung Split System
The Daikin Zena is a premium designer split system that functions as much as a statement piece as it does a climate control solution. With a striking flat-panel European design, available in white or black, the Zena combines Daikin's leading inverter technology with Streamer air purification and built-in Wi-Fi — ideal for architecturally designed homes, prestige apartments, and commercial spaces where aesthetics matter.
Multi-Zone Comfort — One Outdoor Unit
Daikin's multi-split system connects between two and five indoor units to a single compact outdoor compressor — cooling and heating multiple rooms simultaneously without the need for multiple outdoor units or a full ducted system. Each indoor unit can be independently controlled. Suitable for homes without ceiling cavity space and apartments needing multi-room comfort.
Whole-Home & Commercial Ducted
Daikin ducted air conditioning systems deliver whole-home or whole-building climate control through a concealed ceiling-mounted indoor unit and a network of ducts and grilles. With zoning capability, Wi-Fi control, and intelligent scheduling, Daikin ducted systems offer the highest level of comfort and flexibility — with only the controller and grilles visible inside your home.
Four-Way Commercial Distribution
Daikin ceiling cassette units are recessed flush into the ceiling, with air distributed evenly in four directions for draught-free comfort across open-plan areas. Only the decorative grille panel is visible. Suitable for connection to Daikin multi-split outdoor units or VRV systems. The preferred solution for commercial offices, retail, restaurants, and open-plan residential spaces.
Large-Scale Commercial Climate Control
Daikin's VRV (Variable Refrigerant Volume) system is the world's first and most advanced commercial VRF solution — capable of connecting up to 64 indoor units to a single outdoor system, with simultaneous heating and cooling across different zones. Daikin invented VRV technology and remains the global leader. The system of choice for office buildings, hotels, schools, and large commercial facilities.
Daikin's century of research and development has produced technologies that consistently set the global standard for efficiency, air quality, and intelligent comfort control.
Daikin's proprietary Streamer technology generates a high-speed plasma discharge that breaks down allergens, viruses, bacteria, mould, and odour molecules at a molecular level — delivering measurably cleaner indoor air. Certified by independent testing laboratories and featured across Daikin's premium range.
Daikin pioneered inverter air conditioning — a technology that varies compressor speed continuously to precisely match demand, rather than switching on and off. The result is faster temperature reach, consistent comfort, significantly lower running costs, and reduced wear on components.
An infrared motion sensor that detects occupancy in the room and automatically adjusts operation accordingly — switching to energy-saving mode when the room is vacant and resuming normal operation when occupants return. Reduces energy consumption during periods of non-use without any manual input.
Daikin's Coanda effect airflow technology directs conditioned air along the ceiling surface in cooling mode, distributing it evenly throughout the room before it descends — eliminating cold draughts and delivering genuinely comfortable, even temperature distribution from floor to ceiling.
Control your Daikin air conditioner from anywhere via the Daikin Mobile Controller smartphone app. Monitor energy consumption, set weekly schedules, check operation status, and receive maintenance reminders — all from your phone. Compatible with most current Daikin models with built-in Wi-Fi or optional adaptor.
Daikin's auto-clean function periodically dries the heat exchanger to prevent mould and bacteria build-up, maintaining air quality between service visits. The built-in self-diagnosis system continuously monitors performance and displays specific error codes when a fault is detected — allowing for faster, more accurate technician diagnosis.
Installation, servicing, and repair for every Daikin model — residential and commercial, split systems and ducted, new installations and urgent breakdowns.
Expert supply and installation of the complete Daikin range — split systems, multi-split, ducted, ceiling cassette, and commercial VRV. We handle everything from site assessment and system selection to refrigerant charging, electrical connection, and full commissioning.
Annual Daikin air conditioner servicing keeps your system running at peak efficiency, preserves your 5-year warranty, maintains indoor air quality, and prevents costly breakdowns before they occur. Our comprehensive Daikin service covers every component from filter to refrigerant circuit.
Fast diagnosis and repair of all Daikin error codes and faults across every model. Our technicians carry Daikin-specific diagnostic tools and a comprehensive stock of genuine and OEM-approved Daikin replacement parts — completing most repairs in a single visit, same day.
Our technicians diagnose and repair every Daikin fault — from a Daikin not cooling in summer to error codes, water leaks, compressor failure, and everything in between.
When your Daikin air conditioner displays an error code on the remote controller or indoor unit display, it means the system's built-in self-diagnosis has detected a fault. The table below lists the most common Daikin error codes and their causes. We always recommend calling a licensed technician for accurate diagnosis — many Daikin faults have multiple possible causes, and resetting the unit without fixing the underlying problem can cause further damage.
| Error Code | Fault Description | Action Required |
|---|---|---|
| E3 | High pressure control activated — refrigerant or airflow issue | Refrigerant check, coil cleaning, and outdoor unit inspection |
| E7 | Outdoor fan motor fault — motor or PCB failure | Fan motor diagnosis and replacement if required |
| F3 | Discharge pipe temperature too high — refrigerant issue | Refrigerant leak check and system inspection |
| U4 | Communication error between indoor and outdoor unit | Professional diagnosis — wiring or PCB fault |
| L5 | Inverter output overcurrent — compressor or inverter issue | Inverter and compressor diagnosis by licensed technician |
| A3 | Abnormal drainage — float switch activated or drain blocked | Drain cleaning and drain pump inspection |
| C4 | Heat exchanger thermistor fault — liquid pipe sensor | Thermistor replacement by licensed technician |
| C9 | Suction air thermistor fault — intake temperature sensor | Thermistor check and replacement if required |
| H9 | Outdoor air thermistor fault — outside temperature sensor | Outdoor unit sensor diagnosis and replacement |
| J3 | Discharge pipe thermistor fault | Thermistor replacement by licensed technician |
If your Daikin is running longer than it used to in order to reach the set temperature, this typically signals a refrigerant loss, dirty evaporator coil, or a compressor that is starting to lose capacity. Early diagnosis saves significantly on repair costs.
A Daikin error code on the remote display or a flashing indicator light on the indoor unit means the system's self-diagnosis has detected a fault. Do not reset and ignore — call us for a diagnosis. Many error codes indicate conditions that worsen with time if left unaddressed.
A Daikin system running with a refrigerant deficiency, a dirty coil, or a failing compressor consumes more electricity to produce the same output. If your power bill has risen without a change in usage habits, your Daikin may need a service or repair.
Water dripping into the room from the Daikin indoor unit indicates a blocked condensate drain, a frozen evaporator coil, or a failed drain pump. Left unaddressed, water leaks cause damage to walls, ceilings, floor coverings, and the unit itself.
A Daikin air conditioner making rattling, clicking, buzzing, squealing, or grinding sounds that weren't present before is signalling a mechanical change. Noise faults usually worsen over time — early attention is considerably cheaper than waiting for a full breakdown.
Daikin recommends annual professional servicing to maintain your 5-year warranty, peak energy efficiency, and indoor air quality. If your Daikin has not been serviced in the past year, book a service before the next peak season — servicing prevents breakdowns, not just fixes them.
Our technicians have hands-on experience across the full Daikin range — from Cora and Alira X split systems to VRV commercial systems. We know Daikin's error codes, refrigerant systems, and inverter architecture — not just generic HVAC procedures.
Cora, Alira X, Zena, US7, FTXM, multi-split, ducted, ceiling cassette, and VRV — we install, service, and repair every model in the Daikin residential and commercial range.
Same-day repair available in most service areas. We stock genuine and OEM-approved Daikin replacement parts so most faults are resolved in a single visit — no waiting for parts to be ordered.
Clear, itemised quotes before any work begins. No hidden call-out fees. No surprise charges on the invoice. The price we quote is the price you pay — every time, without exception.
Every Daikin installation and repair is backed by our workmanship guarantee. If our work causes an issue, we return and resolve it at no cost — full stop, no conditions.
Our emergency line is open 24 hours, 7 days a week. For urgent Daikin faults — particularly during summer peak periods — call 1300 019 320 any time of day or night.
Everything you need to know about Daikin air conditioner installation, servicing, error codes, warranties, and repair.
For bedrooms, the Daikin Cora is the most popular choice — offering a 5-star energy rating, whisper-quiet operation, sleep mode, and a weekly timer at an accessible price point. For a premium bedroom upgrade, the Daikin Alira X or Daikin US7 adds built-in Wi-Fi, Streamer air purification, and higher energy star ratings. Our team will recommend the correct capacity for your specific room size and orientation.
Daikin recommends professional servicing at least once per year to maintain your 5-year warranty and keep the system operating at peak efficiency. In high-use environments — commercial premises, ducted systems, or units running year-round — servicing twice a year (autumn and spring) is advisable. The Daikin filter should be cleaned by the user every two to four weeks during heavy use periods.
A U4 error code on a Daikin air conditioner indicates a communication fault between the indoor and outdoor unit. This is typically caused by a wiring fault, a damaged communication cable, or a PCB failure in either the indoor or outdoor unit. It requires professional diagnosis — attempting to reset the unit without resolving the underlying cause will result in the code returning.
Daikin split system installation costs in Australia typically range from $600 to $1,200 for a standard single-unit residential installation, depending on system capacity, installation complexity, and access requirements. Ducted system installations vary significantly based on the number of zones, duct length, and ceiling cavity access. We provide free in-home assessments and written quotes — call 1300 019 320 or book online.
Common causes include a low refrigerant charge due to a refrigerant leak, a dirty outdoor coil restricting heat absorption, a defrost cycle issue in very cold conditions, or a faulty reversing valve preventing the system from switching to heating mode. If your Daikin is running in heating mode but the room is not warming, call us for a same-day diagnosis — heating faults in winter are treated as a priority.
Yes — we supply, install, service, and repair the complete Daikin range across Australia, including Cora, Alira X, Zena, US7, FTXM multi-split systems, Daikin ducted air conditioning, ceiling cassette units, and commercial VRV systems. We provide free in-home assessments, written quotes with no obligation, and same-day repair in most service areas.
Daikin offers a 5-year parts and labour warranty on most residential split systems and ducted systems purchased through authorised dealers in Australia. This warranty is conditional on annual professional servicing being carried out by a licensed technician. We issue a written service report after every service to help you maintain your Daikin warranty record.
The Daikin US7 is Daikin's flagship split system — achieving a 7-star energy rating, with humidifying and dehumidifying functions, a thermal sensor for occupancy detection, and the most advanced Streamer air purification system available. The Daikin Alira X is a high-performance system with built-in Wi-Fi and Streamer purification, but without the humidification function and at a slightly lower price point. For most homes, the Alira X offers outstanding value — the US7 is the choice for maximum efficiency and air quality.
Free in-home assessments • Free installation quotes • All Daikin models serviced • Same-day repairs • 24-hour emergency line. WTFix Air — your Daikin specialists.