Trouble Shooting - Midea MTA-18WN1 Technical & Service Manual

Midea Tropical R410A High Efficient Duct Technical Manual 50Hz

8. Trouble shooting


Outdoor unit's malfunction and protection codes
Power supply phase sequence error
Lack of Phase A, B of power supply
Lack of Phase C of power supply
Low pressure protection
Over-current protection of compressor
Communication error
Pipe temperature sensor (T3) error
Ambient temperature sensor (T4) error
High pressure protection
Discharge temperature protection
High temperature of condenser protection
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Power supply phase sequence error

Lack of Phase A, B and C of power supply
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Content LED1 LED2
Flashing Extinguished
Flashing Extinguished
Extinguished Extinguished
Flashing Flashing
Extinguished Extinguished
Flashing Extinguished
Extinguished Flashing
Extinguished Flashing
Flashing Flashing
MCAC-UTSM-201707
LED3
Extinguished
Extinguished
Extinguished
Extinguished
Flashing
Flashing
Flashing
Extinguished
Flashing