Midea ATOM B Series Service Manual page 47

Atom B Series VRF 50/60Hz
1 Error Code Table
Table 6-1.1: Error code table
Error code
Communication fault between main control board and communicate converter board
C0
H0 Communication fault between main control board and communicate converter board
E2 Communication fault between outdoor unit and indoor units
Outdoor heat exchanger temperature sensor(T3) or outdoor ambient temperature
E4
sensor(T4) error
E5 Input voltage protection
E6 DC fan protection
E9 EEPROM Error
E.9. Compressor parameters mismatch
Eb E6 fault occurs more than six times in an hour.
EF PFC fault
EH Refrigerant radiator temperature sensor fault
EP
Cooling ambient temperature lower than -15℃
F1 DC bus voltage protection
H4 L (L0/L1) fault occurs three times in one hour.
H7 The number of online indoor units have decreased/increased
HF Indoor unit and outdoor unit program mismatch
L0 IPM module protection
L1 DC bus low voltage protection
L2 DC bus high voltage protection
L3 Other drive errors
L4 MCE malfunction
L5 Zero speed protection
L7 Phase sequence error
L8
Protection for compressor speed change > 15Hz
Protection for the difference between the setting speed and the running speed of the
L9
compressor > 15Hz
PL Radiator surface temperature protection
P1 System high pressure protection
P2 System low pressure protection
P3 Overcurrent protection
P4 Discharge temperature T5 protection
P5 Outdoor condenser temperature T3 protection
P8 Typhoon protection
P9 Poor reversing of four-way valve
PE IDU evaporator temperature T2 protection
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Content Note
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60 model
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