Carrier Elite air conditioner Fault Codes

Diagnosis of malfunctions of the conditioner is carried out before technical service or before the repair. Timely analysis of technical condition will help you or your service technician to quickly identify the problem and bring the device back to life.

Carrier Elite air conditioner Fault Codes 055N, 065N and 075N

Indoor Unit Error Display

Carrier Elite air conditioner Fault Codes 42LUVH055N/42LUVH065N

DisplayLED STATUS
E0EEPROM parameter error
E1Indoor / outdoor units communication protection
E2Zero-crossing signal error
E3Fan speed out of control
E5Open or short circuit of outdoor temperature sensor
E6Open or short circuit of room or evaporator temperature sensor
E7Outdoor unit fan protection
P0Module protection
P1Over voltage or too low voltage protection
P2Temperature protection of compressor top.
P4Inverter compressor drive error

Note: E4 & P3:  Reserved function

Carrier Elite air conditioner Fault Codes 42LUVH075N

Failure phenomenonDefrosting
lamp
Timer
lamp
Auto
lamp
Operation
Lamp
EEPROM parameter errorOnOnOnOn
Indoor / outdoor units communication protection****
Zero-crossing signal errorOnOn**
Fan speed out of controlOnOn**
Open or short circuit of outdoor temperature sensorXOnX*
Open or short circuit of room or evaporator temperature sensorOnOnOn*
Outdoor unit fan protectionOnOn**
Module protectionXXOn*
Over voltage or too low voltage protectionXOnOn*
Temperature protection of compressor topOnXX*
Outdoor temperature low protectionOnXOn*
Inverter compressor drive errorOnX**

Note: X – Extinguish    * – Flash at 5Hz