M thermal Split
84 202004
Midea M thermal Split
The specific error codes can also be obtained from the LED indicators on the inverter module.
Table 4-4.2: Errors indicated on LED, single-phase 4~10kW
LED301 flashing pattern (GREEN)
LED302 is always on (RED)
Corresponding error
Flashes 8 times and stops for 1 second, then repeats L0 - Inverter module protection
Flashes 9 times and stops for 1 second, then repeats L1 - DC bus low voltage protection
Flashes 10 times and stops for 1 second, then repeats L2 - DC bus high voltage protection
Flashes 12 times and stops for 1 second, then repeats L4 - MCE error
Flashes 13 times and stops for 1 second, then repeats L5 - Zero speed protection
Flashes 16 times and stops for 1 second, then repeats L8 - Compressor frequency variation greater than 15Hz within one second protection
Flashes 17 times and stops for 1 second, then repeats
L9 -
Actual compressor frequency differs from target frequency by more than 15Hz
protection
Table 4-4.3: Errors indicated on LED, single-phase 4~10kW
LED1 flashing pattern (GREEN)
LED2 is always on (RED)
Corresponding error
Flashes 3 times and stops for 1 second, then repeats P1 - High pressure protection
Flashes 5 times and stops for 1 second, then repeats bH PED board checking fail
Flashes 8 times and stops for 1 second, then repeats L0 - Inverter module protection
Flashes 9 times and stops for 1 second, then repeats L1 - DC bus low voltage protection
Flashes 10 times and stops for 1 second, then repeats L2 - DC bus high voltage protection
Flashes 12 times and stops for 1 second, then repeats L4 - MCE error
Flashes 13 times and stops for 1 second, then repeats L5 - Zero speed protection
Flashes 16 times and stops for 1 second, then repeats L8 - Compressor frequency variation greater than 15Hz within one second protection
Flashes 17 times and stops for 1 second, then repeats
L9 -
Actual compressor frequency differs from target frequency by more than 15Hz
protection
Figure 4-4.1: LED location of inverter module
Inverter Module(4-10KW): LED301/302/303 Inverter Module(12-16KW): LED1/LED2/LED3
Midea CAC
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