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18.2 Outdoor unit error code explanation:
For other models,
Display LED STATUS
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(T3,T4.T5)
E5 Voltage protection
E6 PFC module protection
E8
Outdoor fan speed has been out of control or compressor speed has been out of control
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
P0 Top temperature protection of compressor
P1
High pressure protection (For M4OB-36HFN8-Q, M5OD-42HFN8-Q)
P2 Low pressure protection (For M4OB-36HFN8-Q, M5OD-42HFN8-Q)
P3 Current protection of compressor
P4 Temperature protection of compressor discharge
P5 High temperature protection of condenser
P6 IPM module protection
E9 24k indoor unit wiring error
LP Low ambient temperature protection
Note: Once these error codes display, they will disappear in at least 30 seconds if the unit come back to
normal.(Except E2&E3)
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