Carrier is an American brand that has grown into one of the world’s leading air conditioning brands. Carrier air conditioners are widely trusted for their durability, cooling efficiency, and innovation, making them popular in diverse climates around the world, including Singapore. These are the most-buy Carrier air conditioners in Singapore:
- Carrier XPower Gold Inverter 42TVU Series is Carrier’s most popular model in Singapore as it is valued for its high energy efficiency and rapid cooling capability. Additionally, this model also uses Carrier’s Gold Fin technology, which prevents rust and corrosion on the outdoor unit, making it ideal for Singapore’s coastal climate.
- The Carrier Multi-Split System 42QZA Series is also favored in Singaporean homes and offices for its ability to cool multiple rooms with just one outdoor unit.
- Known for its compact design, the Carrier Optima Window-Type Air Conditioner is a top choice for smaller apartments and budget-conscious buyers in Singapore. It offers reliable cooling without needing complex installation, making it ideal for users with simple, single-room cooling needs.
Encounter a problem with your Carrier air conditioner? You can usually indicate the problem with the error codes displayed on the screen of your remote control, or indoor unit. Any problems with your indoor or outdoor unit would show an error code as the air conditioner detects an issue with your aircon.
In this complete guide, we’ll show you the different indoor and outdoor Carrier fault codes that you may encounter. These error codes will indicate the problem with your air conditioning system so you can troubleshoot the underlying issue with your AC system.
Indoor Error Codes
| Code |
Possible Cause |
| E0 |
Indoor unit EEPROM parameter error |
| E1 |
Indoor / outdoor units communication error |
| E3 |
Indoor fan speed has been out of control |
| E4 |
Indoor room temperature sensor T1 open circuit or short circuit |
| E5 |
Evaporator coil temperature sensor T2 open circuit or short circuit |
| EC |
Refrigerant Leakage Detection |
| F1 |
Outdoor ambient temperature sensor T4 open circuit or short circuit |
| F2 |
Condenser coil temperature sensor T3 open circuit or short circuit |
| F3 |
Compressor discharge temperature sensor T5 open circuit or short circuit |
| F4 |
Outdoor unit EEPROM parameter error |
| F5 |
Outdoor fan speed has been out of control |
| P0 |
IPM malfunction or IGBT over-strong current protection |
| P1 |
Over voltage or over low voltage protection |
| P2 |
High temperature protection of compressor top diagnosis and solution |
| P4 |
Inverter compressor drive error |
| P5 |
Mode conflict |
| P6 |
Compressor voltage protection |
Outdoor Error Codes
| Code |
Possible Cause |
| E0 |
Outdoor EEPROM malfunction |
| E2 |
Indoor/outdoor units communication error |
| E3 |
Communication malfunction between IPM board and outdoor main board |
| E4 |
Open or short circuit of outdoor unit temperature sensor |
| E5 |
Voltage protection |
| E8 |
Outdoor fan speed malfunction |
| F1 |
No A Indoor unit coil outlet temperature sensor or connector of sensor is defective |
| F2 |
No B Indoor unit coil outlet temperature sensor or connector of sensor is defective |
| F3 |
No C Indoor unit coil outlet temperature sensor or connector of sensor is defective |
| F4 |
No D Indoor unit coil outlet temperature sensor or connector of sensor is defective |
| F5 |
No E Indoor unit coil outlet temperature sensor or connector of sensor is defective |
| P1 |
High pressure protection |
| P2 |
Low pressure protection |
| P3 |
Current protection of compressor |
| P4 |
Temperature protection of compressor |
| P5 |
High temperature protection of condenser |
| P6 |
IPM module protection |
Other Carrier Error Codes
| Code |
Possible Cause |
| DN |
Communication error between main board and EXV. |
| EC |
Refrigerant leakage detection. |
| EE |
Memory card error. |
| EN |
Frequency limitation for module circuit protection. |
| EU |
Frequency limitation for module temperature protection. |
| FH |
Frequency limitation for freeze protection. |
| H1 |
Defrost or heating oil return cycle. |
| H3 |
Compressor overheat protection. |
| H5 |
IPM Protection. |
| H7 |
Compressor speed reduction. |
| HC |
PFC protection malfunction. |
| HE |
Compressor demagnetizing protection. |
| L9 |
Compressor high voltage protection. |
| LC |
Compressor start-up failure. |
| LD |
Compressor phase loss protection. |
| LE |
Compressor stalling. |
| LF |
Compressor over-speed protection. |
| LP |
Indoor and outdoor units mismatch. |
| PA |
Input current protection. |
| PC |
Current sensor malfunction. |
| PD |
Current sensor miss-wiring protection. |
| PF |
Inverter board ambient temperature sensor malfunction. |
| PH |
High voltage protection. |
| PL |
Low voltage protection. |
| PP |
Abnormal input AC voltage. |
| PU |
Capacitor charging malfunction. |
Related article: Carrier Aircon Troubleshooting Guide
Is the problem persisting even after troubleshooting with the error codes? It might be time to call in professional help! Check your Carrier air conditioner warranty, who knows, you may be eligible for free repairs or parts replacement. For any issues, you can visit the official Carrier air conditioner service centre in Singapore at 1 Venture Avenue, #08-01, Perennial Business City Singapore 608521.
But, if your warranty has expired, you can consider hiring our reliable technician from Luce Aircon. Our expert and reliable technicians will be able to provide reliable maintenance and repair services, ensuring your air conditioner performs at its best!
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