Midea MV5-X252W/V2GN1 Service Manual page 70

Commercial air conditioners
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Table 5-4.1: Specific error codes for error xH4
1
Specific error code
xL0
xL1
xL2
xL4
xL5
xL7
xL8
xL9
Notes:
1.
'x' is a placeholder for the compressor system (compressor and related electrical components), with 1 representing compressor system A and
2 representing compressor system B.
The specific error codes xL0, xL1, xL2 and xL4 can also be obtained from the inverter module LED indicators. If an inverter
module error has occurred, LED5/7 is continuously on and LED4/6 flashes. Refer to Figure 5-4.4 and Table 5-4.2.
Figure 5-4.4: LED indicators LED4 to LED7 on main PCB
Table 5-4.2: Errors indicated on LED4/6
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
201608
Inverter module protection
DC bus low voltage protection
DC bus high voltage protection
MCE error
Zero speed protection
Phase sequence error
Compressor frequency variation greater than 15Hz within one second protection
Actual compressor frequency differs from target frequency by more than 15Hz protection
LED4/6 flashing pattern
Content
Corresponding error
xL0 - Inverter module protection
xL1 - DC bus low voltage protection
xL2 - DC bus high voltage protection
xL4 - MCE error
V5 X VRF 50/60Hz
69

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