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Maintenance
4.3 Outdoor unit error codes
Error code Description
E1 Communication malfunction between the indoor unit and the outdoor unit
F0 Overcurrent protection
F1 Room temperature sensor malfunction (T4)
F2 External heat exchanger temperature sensor malfunction (T3)
F3 Drain temperature sensor malfunction (T5)
F4 External EEPROM malfunction
F5 External fan speed malfunction
P0 IPM module protection
P1 DC voltage protection too high/too low
P3 Extremely low room temperature protection
P4 Compressor rotor position protection
J0 Evaporator high temperature protection
J1 Condenser high temperature protection
J2 Drain high temperature protection
J3 PFC module protection
J4 Communication error between main external chip and compressor drive chip
J5 High pressure protection
J6 Low pressure protection
P7 IGBT sensor malfunction
J8 AC power supply input voltage protection
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