Midea V4 Plus

R410A DC Inverter VRF V4 Plus W Series 50Hz MCAC-VTSM-2016-04
200 Troubleshooting
Note: When running, if system takes place mistaken operation or lighter, please pull down the power supply
switch to cut it off. Before restarting machines, please press the on/off key again as above.
3. Malfunction code and troubleshooting
If there is phenomenon as follows, please stop air conditioner running and cut power supply and refer to the
following. However, if the problem insists, please contact the customer service center of Midea commercial air
conditioner company, and offer machine’s model and detailed malfunction.
No.
Error
code
Error or protection type
Note
1
E0
Communication error between main units
Only display in slave unit
2
E1
Phase sequence error
3
E2
Communication error between indoors and the master unit
4
E8
Main unit address error
5
E9
Voltage error
6
H0
Communication error between main control chip and inverter driver chip
7
H1
Communication error between main control chip and communication chip
8
H2
Main unit quantity decreased error
Only display in master unit
9
H3
Main unit quantity increased error
Only display in master unit
10
H4
P6 protection appears three times in 60 minutes
11
H5
P2 protection appears three times in 60 minutes
12
H6
P4 protection appears three times in 100 minutes
13
H7
Quantity of indoor units decrease error
14
H8
High pressure sensor error
15
H9
Reserve
16
P0
Top temperature protection of inverter compressor
17
P1
High pressure protection
18
P2
Low pressure protection
19
P3
Over current protection of compressor
20
P4
Discharge temperature protection
21
P5
Reserve
22
P6
Inverter module protection
23
L0
Inverter module error
24
L1
Low voltage protection
25
L2
High voltage protection
26
L3
Reserve
27
L4
MCE error / synchronization / closed loop
28
L5
Zero speed protection
29
L7
Phase sequence error protection
30
L8
Frequency difference in one second more than 15Hz
31
L9
Frequency difference between the real and the setting frequency more
than 15Hz
32
C0
TSJ sensor fault
33
C1
TSC1 sensor fault
34
C2
TSC2 sensor fault
35
C3
Low pressure sensor fault
Low pressure Ps≤0.2MPa
36
C4
TSC temperature too high or too low protection
37
C5
TSJ temperature too high or too low protection
38
C6
Low voltage protection
39
C7
Temperature protection of inverter module
40
C8
Flow switch break protection
41
F0
C4 protection appears 3 times in 60 minutes
Need restart to recover