Your aircond starts flashing lights or showing an error code. Most homeowners panic — but error codes are your aircond telling you exactly what's wrong. Learn to read them.
Common Daikin Error Codes
- U0: Low gas/refrigerant. Most common. Needs top-up and leak check.
- U4: Communication error between indoor/outdoor units. Loose wiring or faulty PCB board.
- A1: Indoor PCB fault. May need replacement (RM250-500).
- A5: Anti-freeze protection. Usually dirty filters — clean them first.
- E7: Outdoor fan motor error.
- L5: Compressor overcurrent. Serious — could be compressor failure.
Common Panasonic Error Codes
- H11: Communication error. Check wiring.
- H14: Indoor temperature sensor fault.
- H16: Outdoor current sensor error.
- F95: Outdoor coil too hot. Dirty condenser or restricted airflow.
Common York Error Codes
- E1: Indoor temperature sensor fault.
- E2: Indoor coil sensor fault.
- E6: Communication error — very common on older York units.
- F3: Compressor discharge temp too high. Low gas or blocked condenser.
🔧 What to Do
1. Note the exact code (write down or video)
2. Power reset: breaker off 5 min, restart
3. Check filter — dirty filters trigger many errors
4. If error recurs after reset, call a technician
5. Don't keep restarting — can worsen the problem
Errors You Can Fix Yourself
- Anti-freeze/low airflow: clean the filter
- Communication errors after power outage: full power reset
- Timer flashing after remote battery change: re-pair the remote
Errors Needing a Professional
- Gas/refrigerant errors — leak repair and recharge needed
- Compressor errors — professional diagnosis essential
- PCB faults — see our guide on signs your aircond needs repair
- Sensor errors — cheap parts but need unit disassembly
In Glenmarie or KL/Selangor, our technicians diagnose any error code and advise on cost-effective repair.
Aircond Showing Error Code?
Send us a photo of the error — we will diagnose it. Professional repair for all brands.
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