16.2 Outdoor unit error code explanation:
Outdoor EEPROM malfunction
Indoor / outdoor units communication error
Communication malfunction between IPM board and outdoor main board
Open or short circuit of outdoor unit temperature sensor(T3,T4.T5)
Outdoor fan speed has been out of control
No A Indoor unit coil outlet temperature sensor or connector of sensor is defective
No B Indoor unit coil outlet temperature sensor or connector of sensor is defective
No C Indoor unit coil outlet temperature sensor or connector of sensor is defective
No D Indoor unit coil outlet temperature sensor or connector of sensor is defective
No E Indoor unit coil outlet temperature sensor or connector of sensor is defective
High pressure protection (For M4OB-36HFN8-Q, M5OD-42HFN8-Q)
Low pressure protection (For M4OB-36HFN8-Q, M5OD-42HFN8-Q)
Current protection of compressor
Temperature protection of compressor discharge
High temperature protection of condenser
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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