Aircon problems?

The unit running but not cooling often points to low refrigerant or a dirty evaporator coil, but could also be a failing compressor or a refrigerant leak elsewhere in the system.

1. 1.Blocked airflow can weaken cooling even when the unit is still running.
2. 2.Refrigerant leak can make cooling fade gradually over weeks.
3. 3.Compressor or start faults can leave you with wind but little real cooling.
4. 4.High room heat load can outpace the unit's capacity even when everything works.

This usually means a blocked condensate drain, but could also be a frozen coil that's thawing, or an installation angle issue — the source matters before any fix.

1. 1.Drain-path blockage can cause steady indoor dripping.
2. 2.Coil freeze-thaw behavior can release water in bursts.
3. 3.Condensation or slope issues can produce hidden or recurring drips.

This often points to a power supply issue or a blown fuse at the isolator, but could also be a failed control board or a depleted remote battery causing confusion.

1. 1.Power loss can prevent any startup response.
2. 2.Command-link issues can block startup even when standby power is present.
3. 3.Control-board startup circuit failure can leave the display completely blank.
4. 4.Control-board or safety-lock behavior can stop startup.

Mid-cycle shutdowns often indicate a thermal protection trip from overheating, but could also be a refrigerant issue, a dirty filter restricting airflow, or an intermittent electrical fault.

1. 1.Heat overload can stop operation after a short runtime.
2. 2.Freeze-safety behavior can trigger repeated short cycles.
3. 3.Rapid on-off cycling from pressure protection or electrical faults.
4. 4.Sensor/control instability can end cycles too early.

Blinking patterns are the unit's self-diagnostic signal — each pattern maps to a specific fault code, and the brand and model determine what it means.

1. 1.Safety-trigger shutdown can cause repeated flashing cycles.
2. 2.Indoor-outdoor signal-link faults can trigger recurring error lights.
3. 3.Sensor/control faults can produce unstable blink patterns.

Night noise from the outdoor unit often points to a loose fan blade or vibrating panel, but could also be a compressor running hard due to refrigerant pressure imbalance.

1. 1.Loose mounting or vibration transfer can create rattling or humming noise.
2. 2.Fan motor or bearing wear can produce whining or grinding sounds.
3. 3.Compressor-side strain can cause heavy humming, buzzing, or banging.

A musty smell on startup usually means mold or bacteria on the evaporator coil or drain pan, but a burning smell is a different signal entirely and warrants faster attention.

1. 1.Damp buildup in tray or drain areas can create musty smell at startup or shutdown.
2. 2.Buildup on coil or fan surfaces can cause ongoing smell during runtime.
3. 3.Electrical heat odor can come from stressed wiring or relay contacts.

Repeated trips often point to a compressor drawing excess current, but could also be a wiring fault, a failing capacitor, or an undersized circuit for the unit's load.

1. 1.A current leak or short can trip the breaker right away.
2. 2.High startup current from a stressed compressor or fan can trip protection.
3. 3.Hot terminals or board points can create a burnt smell.

Turn the unit off and do not force restarts. Message us immediately if breaker trips, burning smell, sparks, or smoke appear.

In a multi-split system, one room failing to cool often points to that specific indoor unit's expansion valve or refrigerant distribution, rather than a shared system fault.

1. 1.A clogged filter or coil on the unit serving that room restricts airflow and reduces cooling output.
2. 2.The indoor unit for that room has a fault — fan motor, thermistor, or PCB — while others remain unaffected.
3. 3.The room's heat load or airflow conditions differ significantly from the rest of the home.

Ice on the pipe almost always means restricted airflow or low refrigerant pressure — both starve the coil of heat and cause it to freeze, but the root cause differs.

1. 1.A blocked or dirty filter reduces airflow across the coil, causing the refrigerant to over-cool and freeze.
2. 2.Low refrigerant from a leak causes the remaining gas to drop below its normal operating temperature.
3. 3.A frozen coil can occur during extended low-temperature operation or if the unit is set very low in a small room.