Midea MV6-252WV2GN1 Service Manual page 72

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Table 6-1.1: Error code table (continued)

Error

code

Inverter module temperature protection

Compressor discharge insufficient superheat protection

xL0

Inverter module protection

xL1

DC bus low voltage protection

xL2

DC bus high voltage protection

xL4

MCE (Main Chip Error)

xL5

Zero speed protection

xL7

Phase sequence error

Compressor frequency variation greater than 15Hz within one

xL8

second protection

Actual compressor frequency differs from target frequency by

xL9

more than 15Hz protection

Notes:

'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. 'y' is a placeholder for the address (1 or 2) of the slave unit with the error.

For some error codes, a manual restart is required before the system can resume operation.

Once the EXV has been connected properly, the error code will flash to indicate that the connection has been re-established. A manual restart is then

required before the system can resume operation.

If an xH4 error code is displayed, enter menu mode "n31" (refer to Part 5, 2.2.3 "menu mode") to check the history error code to check the following specific

error code: xL0, xL1, xL2, xL4, xL5, xL7, xL8, xL9.

2 Troubleshooting

2.1 Warning

Warning

 All electrical work

accredited professionals and in accordance with all applicable legislation (all national, local and other laws,

standards, codes, rules, regulations and other legislation that apply in a given situation).

 Power-off the outdoor units before connecting or disconnecting any connections or wiring, otherwise electric

shock (which can cause physical injury or death) may occur or damage to components may occur.

Content

must

carried