Carrier Split
The printed circuit boards existing inside the indoor unit are equipped with
self-diagnostic function to detect malfunction and automatically stops the
operation at the air conditioner after blinking of power or timer led as per
malfunction.
WALL MOUNTED AIR CONDITIONER☆ 1 time E0 Indoor unit EEPROM parameter error☆
☆ 2 times E1 Indoor / outdoor units communication error
☆ 4 times E3 Indoor fan speed has been out of control
☆ 5 times E4 Indoor room temperature sensor T1 open circuit or shortcircuit
☆ 6 times E5 Evaporator coil temperature sensor T2 open circuit or short circuit
☆ 7 times ECR efrigerant Leakage Detection
☆ 2 times F1Outdoor ambient temperature sensor T4 open circuit or short circuit
☆ 3 times F2 Condenser coil temperature sensor T3 open circuit or short circuit
☆ 4 times F3 Compressor discharge temperature sensor T5 open circuit or short circuit
☆ 5 times F4 Outdoor unit EEPROM parameter error
☆ 6 times F5 Outdoor fan speed has been out of control☆ 1 timesP0IPM malfunction or IGBT over-strong current protection
☆ 2 times P1 Over voltage or over low voltage protection
☆ 3 times P2 High temperature protection of compressor top diagnosis and solution(only for 9k,12k models)
☆ 5 times P4 Inverter compressor drive error
02,03,14,15,17,18,19,07,08
