1. It’s Not Cooling (or Heating) Properly
If your system is running but the room temperature won’t reach your set point, you likely have one of three issues: low refrigerant (from a leak), a failing compressor, or a blocked evaporator coil. All three are repairable — but the longer you leave them, the more expensive the fix.
2. It’s Tripping Your Circuit Breaker
An air conditioner that repeatedly trips the breaker has an electrical fault. This is usually a failed run capacitor (inexpensive), a failing compressor drawing excess current (moderate cost), or a wiring fault. Don’t keep resetting the breaker — get it diagnosed before it damages the compressor.
3. It’s Displaying a Fault Code
Modern air conditioners display error codes when they detect a fault. Daikin shows codes like U4, C4, or A1. Fujitsu uses flashing lights on the indoor unit. Mitsubishi displays numeric codes on the controller. These codes point directly to the fault — which means diagnosis is usually fast, and repairs are targeted rather than guesswork.
4. Water Is Leaking from the Indoor Unit
A small amount of condensation is normal — it drains away through a drain line. Water dripping or pouring from the indoor unit means the drain is blocked, the drain pan is cracked, or (less commonly) the system is so low on refrigerant that the coil is freezing and then melting. All are fixable.
5. It’s Making a Noise It Didn’t Make Before
A grinding or rattling noise from the indoor unit often means the fan bearing is worn. A clicking or banging from the outdoor unit can indicate loose panels, a bent fan blade, or debris caught in the fan. Don’t ignore unusual noises — a worn bearing that costs $80 to replace can destroy a fan motor worth $400 if left too long.
What to Do Next
Don’t turn the system off and wait. Call us and describe what you’re seeing. We can often diagnose over the phone and tell you whether it’s urgent. Same-day callouts are available for priority faults across Sydney’s North Shore.
