Licensed LG technicians servicing Australian homes and businesses. Every model — Dualcool AI, Artcool, multi-split, ducted, and Multi V commercial. Same-day service. Upfront pricing. Call 1300 019 320.
Dualcool AI, Artcool, Ducted, Multi V & more
Available in most service areas
OEM-approved replacement components
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On every installation and repair
LG Electronics is one of the world's most recognised consumer technology brands — and its air conditioning range brings that same philosophy of intelligent design and engineering quality to Australian homes and businesses. LG air conditioners are built around the Dual Inverter Compressor, a patented technology that delivers faster cooling, quieter operation, and greater energy efficiency than standard single inverter systems — backed by one of the strongest compressor warranties in the industry.
LG's 2025 flagship — the Dualcool AI Air — takes this further with AI Core-Tech, the LG ThinQ app, Energy Manager+, Window Opening Detection, and Sleep Timer+. Whether it is a sleek LG Artcool split system on the bedroom wall or a large-scale LG Multi V VRF system cooling an entire commercial building, LG air conditioning covers every need with intelligent, connected, energy-efficient technology.
At WTFix Air, our technicians are experienced across the complete LG residential and commercial range — Dualcool, Artcool, multi-split, ducted, and Multi V. We understand LG's CH-code fault system, Dual Inverter architecture, and ThinQ connectivity, ensuring accurate diagnosis and effective repairs every time.
South Korea — LG Electronics is a global leader in consumer electronics and home appliances, operating in Australia for decades
LG's patented Dual Inverter Compressor operates at a wider frequency range than standard inverters — delivering up to 40% faster cooling and 70% energy savings compared to conventional compressors
LG's Dualcool AI uses AI Core-Tech to learn usage patterns, adapt airflow, manage energy consumption limits, and detect window openings — genuinely intelligent climate control
Smart home control via the LG ThinQ app — monitor energy, set schedules, receive maintenance alerts, and control your LG air conditioner from anywhere
LG Artcool Gallery operates from as low as 20dB(A) — among the quietest split systems available for bedrooms and living areas in Australia
LG offers up to 5 years parts and labour on residential systems, with extended compressor warranty available on selected models — one of the strongest coverage options in Australia
We install, service, and repair every LG air conditioner model — from the AI-powered Dualcool for the living room to large-scale Multi V commercial systems.
Flagship AI Inverter Split System
The LG Dualcool AI Air is LG's most advanced residential split system for Australia, launched for the 2025–26 summer. Powered by AI Core-Tech, it learns your household's usage patterns, automatically adjusts airflow and temperature, detects window openings to prevent energy waste, and manages energy consumption within a limit you set via the ThinQ app. The next generation of intelligent home comfort.
Designer Split System with LCD Display
The LG Artcool Gallery is the world's only air conditioner with a built-in 27-inch LCD screen — displaying personalised photos, artwork, or content while delivering full reverse cycle heating and cooling. Designed to be wall-mounted like a picture frame, it uses LG's Dual Cylinder Inverter Compressor for ultra-quiet operation from as low as 20dB(A), three-way airflow optimisation, and AI Dry to prevent moisture build-up inside the unit.
Premium Mirror-Finish Split System
The LG Artcool Mirror features a distinctive mirror-glass front panel that reflects its surroundings, blending into any interior while delivering LG's Dual Inverter performance. With Wi-Fi control via the ThinQ app, auto-cleaning, and a Dual Protection Filter, the Artcool Mirror suits design-conscious homes and prestige apartments where the indoor unit is as much a design feature as a functional appliance.
Reliable Everyday Reverse Cycle Split
LG's standard Dualcool split system range brings the Dual Inverter Compressor to everyday residential applications — delivering energy-efficient reverse cycle heating and cooling for bedrooms, living areas, and offices. With Wi-Fi connectivity, auto-cleaning, sleep mode, and a Dual Protection Filter, the standard Dualcool offers excellent value for money backed by LG's proven reliability. Available from 2.5kW to 9.0kW.
Multi-Zone — One Outdoor Unit
LG multi-split systems connect two to five indoor units to a single compact outdoor compressor — providing independent heating and cooling control across multiple rooms without the cost and space requirements of a full ducted system. Indoor units can be a mix of wall-mounted splits, ceiling cassettes, and floor consoles. Ideal for apartments, townhouses, renovations, and homes with no ceiling cavity for ducted installation.
Whole-Home & Commercial Ducted
LG ducted air conditioning delivers whole-home or whole-building comfort through a ceiling-concealed indoor unit and a network of ducts and supply grilles. With zoning capability, LG ThinQ Wi-Fi control, and inverter efficiency, LG ducted systems provide the highest level of whole-home climate management — with only the controller and grilles visible inside your home or premises.
Four-Way Commercial Distribution
LG ceiling cassette units sit flush with the ceiling, distributing conditioned air in four directions simultaneously for even, draught-free comfort across open-plan areas. Only the slim decorative grille panel is visible. Compatible with LG multi-split and Multi V outdoor units. The preferred solution for commercial offices, retail stores, restaurants, and any large open-plan space where wall mounting is impractical.
Large-Scale Commercial Climate Control
LG Multi V is LG's Variable Refrigerant Flow commercial system — capable of connecting large numbers of indoor units across an entire building from one or more outdoor systems. With simultaneous heating and cooling across zones, advanced energy recovery, BMS integration, and centralised management, LG Multi V is the choice for office buildings, hotels, shopping centres, schools, and large commercial facilities.
LG's air conditioning technology is built around the Dual Inverter Compressor and enhanced with genuine AI — delivering faster, smarter, more efficient climate control than conventional systems.
LG's patented Dual Inverter Compressor operates across a wider frequency range than standard single inverter compressors — reaching the target temperature up to 40% faster, running up to 70% more energy-efficiently, and operating at lower noise levels than conventional systems. The wider operating range also means LG systems maintain efficiency at extreme outdoor temperatures — hot Australian summers and cold winter nights alike.
LG's AI Core-Tech — available on the Dualcool AI — learns your household's usage patterns over time and proactively adjusts operation to maintain comfort while minimising energy use. It detects when a window is opened and automatically enters energy saving mode, tracks sleep patterns to maintain ideal overnight temperatures quietly, and adapts airflow based on room occupancy and layout analysis via the ThinQ app.
The LG ThinQ smart home app gives you full remote control of your LG air conditioner from anywhere — set temperatures, switch modes, create weekly schedules, monitor energy consumption, and receive maintenance reminders. ThinQ also enables voice control integration with Google Assistant and Amazon Alexa, and supports LG's Energy Manager+ function for setting and enforcing electricity consumption limits.
Available on the LG Dualcool AI, Energy Manager+ allows you to set a maximum electricity consumption target via the ThinQ app. The system then automatically adjusts its operation — fan speed, temperature, and compressor output — to stay within that energy boundary. For households managing rising electricity bills, Energy Manager+ provides real, measurable control over running costs without sacrificing basic comfort.
LG's built-in auto-cleaning function dries the indoor heat exchanger after each cooling cycle by running the fan only — preventing the moisture build-up that leads to mould growth, musty odours, and reduced air quality. This reduces the frequency of professional coil cleaning required and helps maintain the indoor unit's air quality and efficiency between annual service visits.
LG's Dual Protection Filter combines a standard dust filter with an additional layer of anti-bacterial and allergen-filtering material — capturing dust, pet hair, pollen, and micro-particles while inhibiting the growth of bacteria on the filter surface. Available across the Dualcool and Artcool ranges, it is particularly beneficial for households with allergy sufferers or young children.
Installation, annual servicing, and same-day repair for every LG air conditioner model — Dualcool, Artcool, multi-split, ducted, and Multi V commercial.
Expert supply and installation of the complete LG range — Dualcool AI, Artcool Gallery and Mirror, standard Dualcool split systems, multi-split configurations, ducted systems, ceiling cassettes, and Multi V commercial VRF. All installations are carried out by licensed technicians and include full commissioning, ThinQ app setup, and system handover.
Annual LG air conditioner servicing maintains your LG warranty, keeps the Dual Protection Filter and coil clean, ensures the refrigerant circuit is correctly charged, and prevents costly breakdowns. Our comprehensive LG service covers every component — evaporator and condenser coils, condensate drain, refrigerant pressure, electrical connections, and all operational checks.
Fast, accurate diagnosis and repair of all LG CH-codes and fault conditions across every LG model. Our technicians carry LG-specific diagnostic tools and a comprehensive stock of genuine and OEM-approved LG replacement parts, completing most repairs in a single same-day visit — including CH05, CH10, CH38, and compressor-related faults.
Our technicians diagnose and repair every LG fault — from an LG split system not cooling in summer to CH error codes, water leaks, Dual Inverter compressor faults, and everything in between.
LG air conditioners display faults as CH-codes on the indoor unit or remote controller display — for example, CH05, CH10, or CH38. Each code corresponds to a specific fault condition detected by the system's built-in self-diagnosis. The table below covers the most common LG error codes and their meanings. Always call a licensed technician for accurate diagnosis — many CH-codes have multiple potential causes, and simply resetting the unit without fixing the underlying problem will result in the code returning.
| Error Code | Fault Description | Action Required |
|---|---|---|
| CH01 / C1 | Indoor air sensor fault — open or short circuit | Indoor temperature sensor check and replacement |
| CH02 / C2 | Indoor pipe (inlet) sensor fault — open or short circuit | Inlet pipe sensor check and replacement if required |
| CH04 / FL | Drain fault — float switch activated or drain blocked | Drain cleaning and condensate pump inspection |
| CH05 / E0 | Communication error — indoor to outdoor unit | Check interconnecting wiring — PCB or wiring fault diagnosis |
| CH06 | Outlet pipe sensor fault — open or short circuit | Outlet pipe sensor diagnosis and replacement |
| CH10 / E6 | Indoor fan motor fault — fan stopped or locked | Indoor fan motor diagnosis and replacement if required |
| CH21 | Compressor overcurrent — high current draw | Compressor and inverter diagnosis by licensed technician |
| CH38 / F4 | Low refrigerant warning — refrigerant deficiency detected | Refrigerant leak check and recharge by licensed technician |
| CH53 | Communication error — indoor to outdoor (inverter models) | Check wiring and PCB — professional diagnosis required |
| CH67 / EF | Outdoor fan motor fault | Outdoor fan motor diagnosis and replacement if required |
If your LG Dualcool or Artcool is running noticeably longer than before to reach the set temperature, this is a key indicator of a refrigerant deficiency, dirty evaporator coil reducing heat transfer efficiency, or a Dual Inverter compressor beginning to lose capacity. Early diagnosis prevents a minor issue from becoming a major repair.
An LG CH error code on the indoor unit display or remote controller means the self-diagnosis system has detected a specific fault. Do not simply reset the unit and ignore it — the underlying condition will return and may cause additional damage. Call us for an accurate CH-code diagnosis and same-day repair.
An LG air conditioner with a dirty coil, low refrigerant, or a failing Dual Inverter compressor draws significantly more power to produce the same output. One of the first signs of a developing mechanical or refrigerant issue is a rising electricity bill without any change in usage patterns or habits.
Water dripping from the LG indoor unit into the room indicates a blocked condensate drain, a frozen evaporator coil, or a failed condensate pump. Left unaddressed, water leaks cause damage to ceilings, walls, and floor coverings, and can lead to mould growth inside the unit and the surrounding structure.
An LG air conditioner producing new or unusual mechanical sounds — rattling panels, clicking during startup, buzzing from the indoor or outdoor unit — is signalling a change in its mechanical condition. These sounds typically worsen over time. Early investigation is considerably cheaper than waiting for a complete component failure.
LG recommends annual professional servicing to maintain warranty validity, peak Dual Inverter efficiency, and indoor air quality via the Dual Protection Filter and auto-cleaning function. If your LG system has not been professionally serviced in the past year, book a service before the summer peak season — servicing prevents breakdowns, not just fixes them.
Our technicians have hands-on experience across the full LG range — Dualcool, Artcool, multi-split, ducted, and Multi V commercial. We understand LG's CH-code system, Dual Inverter architecture, and ThinQ app diagnostics for fast, accurate fault identification.
Dualcool AI, Artcool Gallery and Mirror, standard Dualcool, multi-split, ceiling cassette, residential and commercial ducted, and Multi V VRF — we install, service, and repair the complete LG air conditioning range.
Same-day repair available in most service areas. We carry genuine and OEM-approved LG replacement parts — completing most CH-code faults and mechanical repairs in a single visit without waiting days for parts.
Clear itemised quotes before any work begins. No hidden call-out fees. No surprise items on the invoice. The price we quote is the price you pay — every time, without exception.
Every LG installation and repair is backed by our workmanship guarantee. If our work causes an issue, we return and fix it at no additional cost — no conditions, no exceptions.
Our emergency line is open around the clock. For urgent LG faults during the Australian summer or unexpected winter breakdowns — call 1300 019 320 any time of day or night.
Everything you need to know about LG air conditioner installation, servicing, CH error codes, ThinQ connectivity, and repair in Australia.
For bedrooms, the LG Dualcool AI or standard Dualcool range are the top recommendations — both use the Dual Inverter Compressor for ultra-quiet operation, efficient performance, and LG ThinQ app control. For a design-conscious bedroom, the LG Artcool Mirror blends Dual Inverter performance with a distinctive mirror-glass panel that suits any interior. For the ultimate bedroom upgrade, the LG Artcool Gallery operates from as low as 20dB(A) and includes a 27-inch display. Our team will recommend the correct capacity for your specific room size.
The LG Dualcool AI uses LG's AI Core-Tech to actively learn your household's patterns and proactively adapt operation — detecting window openings, optimising overnight sleeping temperatures via Sleep Timer+, and allowing you to set energy consumption limits via Energy Manager+ in the ThinQ app. The standard LG Dualcool uses the same Dual Inverter Compressor for efficient reverse cycle performance with ThinQ app control, but without the AI learning and energy management features. For most households, the standard Dualcool offers excellent value — the Dualcool AI is the choice for maximum intelligence and energy management.
LG error code CH38 (also displayed as F4 on some models) is a low refrigerant warning — the system has detected a refrigerant deficiency and has entered a protective mode to prevent compressor damage. This code almost always indicates a refrigerant leak somewhere in the system. Only a licensed ARCtick technician can legally handle refrigerant — call us on 1300 019 320 for a same-day leak check and recharge.
LG recommends annual professional servicing to maintain warranty validity and peak Dual Inverter efficiency. In high-use environments — commercial premises or systems running year-round — servicing twice yearly (autumn and spring) is advisable. The Dual Protection Filter should be cleaned by the user every 2 to 4 weeks during heavy-use periods. Annual professional servicing covers the coil, refrigerant circuit, condensate drain, and electrical components that the user cannot safely access.
Common causes include the air conditioner being connected to a 5GHz Wi-Fi band instead of the required 2.4GHz band, the Wi-Fi password having been changed, the ThinQ app needing an update, or an issue with the indoor unit's Wi-Fi module. Start by confirming your router is broadcasting on 2.4GHz and the app is up to date. If the issue persists after re-pairing the device in the ThinQ app, the Wi-Fi module in the indoor unit may require professional inspection — call us on 1300 019 320.
Common causes include a low refrigerant charge from a refrigerant leak, a dirty outdoor coil restricting heat absorption in cold conditions, a defrost cycle running longer than usual during cold snaps, or a faulty reversing valve preventing the system from switching to heating mode. If your LG is running in heat mode but the room is not warming adequately, call us for a same-day diagnosis — we treat heating faults in winter as priority callouts.
Yes — we supply, install, service, and repair the complete LG air conditioning range across Australia, including Dualcool AI, Artcool Gallery and Mirror, standard Dualcool split systems, LG multi-split systems, ducted air conditioning, ceiling cassettes, and Multi V commercial VRF systems. We provide free in-home assessments and written quotes with no obligation. Call 1300 019 320 or book online.
LG error code CH05 (also shown as E0 or CH53 on inverter models) indicates a communication fault between the indoor and outdoor unit. This is typically caused by a wiring fault in the interconnecting cable, signal interference, or a PCB failure in either unit. A power cycle (switching off the circuit breaker for 5 minutes) may clear a temporary fault — but if CH05 returns after a reset, professional diagnosis is required. Do not continue operating the system with this code active.
Free in-home assessments • Free installation quotes • All LG models serviced • Same-day repairs • 24-hour emergency line. WTFix Air — your trusted LG specialists.