Midea MV6-i400WV2GN1-E - Troubleshooting

V6-i VRF 50/60Hz
71
Part
6 - Diagnosis and Troubleshooting
Table 6-1.1: Error code table (continued)
Error
code
1
Content
Remarks
Manual re-start
required
2
PL
Inverter module temperature protection
Displayed on the unit with the error
No
PP
Compressor discharge insufficient superheat protection
Displayed on the unit with the error
No
xL0
Inverter module protection
Displayed on the unit with the error
Yes
xL1
DC bus low voltage protection
Displayed on the unit with the error
Yes
xL2
DC bus high voltage protection
Displayed on the unit with the error
Yes
xL4
MCE error
Displayed on the unit with the error
Yes
xL5
Zero speed protection
Displayed on the unit with the error
Yes
xL7
Phase sequence error
Displayed on the unit with the error
Yes
xL8
Compressor frequency variation greater than 15Hz within one
second protection
Displayed on the unit with the error
Yes
xL9
Actual compressor frequency differs from target frequency by
more than 15Hz protection
Displayed on the unit with the error
Yes
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. 'y' is a placeholder for the address (1 or 2) of the slave unit with the error.
2. For some error codes, a manual restart is required before the system can resume operation.
3. 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.
2 Troubleshooting
2.1 Warning
 All electrical work must be carried out by competent and suitably qualified, certified and
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.
Warning