Midea MHC-96HWD1N1 Technical Manual page 57

MCAC-UTSM-201406
9.5 Outdoor unit malfunction and protection codes
Error
/code
E1 Phase sequence error
E2 Indoor & outdoor unit communication error
Ambient temperature T4/pipe temperature T3
E4
sensor error
E5 Voltage error
E7 Discharge sensor error
E9 Eeprom error
H0 IR341 and MC9S08AC128 communication error
H1 0537 and MC9S08AC128 communication error
H4 Three times P6 protection in 60 minutes
H5 Three times P2 protection in 60 minutes
H6 Three times P4 protection in 100 minutes
H8 High pressure sensor error
H9 Three times P9 protection in 60 minutes
P0 Top temperature protection of compressor
High pressure protection or high temperature
P1
protection of discharge sensor
P2 Low pressure protection
P3 Over-current protection of compressor
P4 Discharge temperature protection
P5 Pipe temperature protection
P6 Inverter module protection
P9 DC fan module protection
L0 Inverter module error
L1 DC generatrix low voltage error
L2 DC generatrix high voltage error
L4 MCE error/ synchronization/ closed loop
L5 Zero speed protection
L7 Phase sequence error
Frequency difference in one second more than
L8
15Hz protection
Frequency difference between the real and the
L9
setting frequency more than 15Hz protection
Midea R410A Full DC Inverter Split Type Series Technical Manual
Content Note
Discharge pressure less than or equal to 0.3MPa
Display H6, if three times in 100 minutes
Display H5, if three times in 60 minutes
Display H6, if three times in 100 minutes
Display H4, if three times in 60 minutes.
Display H9, if three times in 60 minutes
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