Midea ATOM B Series Service Manual page 85

Atom B Series VRF 50/60Hz
2.23.12 Specific error codes for inverter module protection
The specific error codes L0, L1, L2, L4, L5, L7, L8 and L9 can alsobe obtained from the inverter module LED indicators. If an
inverter module error has occurred, one of inverter module LED indicators is continuously on and the other one of inverter
module LED indicators flashes
Table 6-2.3: Errors indicated on LED
LED flashing pattern
Flashes 4 times and stops for 1 second, then repeats
Flashes 8 times and stops for 1 second, then repeats
Flashes 9 times and stops for 1 second, then repeats
Flashes 10 times and stops for 1 second, then repeats
Flashes 12 times and stops for 1 second, then repeats
Flashes 13 times and stops for 1 second, then repeats
Flashes 15 times and stops for 1 second, then repeats
84
Corresponding error
Communication malfunction between IR341/main board
L0 - Inverter module protection
L1 - DC bus low voltage protection
L2 - DC bus high voltage protection
L4 - MCE error
L5 - Zero speed protection
L7 - Phase sequence error