Midea M-thermal Mono Series - Error Code Table

M thermal Mono
202004 49
3 Error Code Table
Table 4-3.1: Error code table
Error
code
Serial
number
Content
1
Displayed on
Remarks
C7
65
Transducer module temperature too high
protect
User interface and refrigerant system
main PCB
Contact your local dealer
E0
E8
1
9
Water flow failure
User interface and hydronic system
main PCB
E1
2
Phase sequence error
User interface and refrigerant system
main PCB
Only applies to 3-phase
models
E2
3
Communication error between outdoor unit
and user interface
User interface and hydronic system
main PCB
E3
4
Backup electric heater exchanger water
outlet temperature sensor error
User interface and hydronic system
main PCB
Sensor T1
E4
5
Domestic hot water tank temperature sensor
error
User interface and hydronic system
main PCB
Sensor T5
E5
6
Air side heat exchanger refrigerant outlet
temperature sensor error
User interface and refrigerant system
main PCB
Sensor T3
E6
7
Outdoor ambient temperature sensor error
User interface and refrigerant system
main PCB
Sensor T4
E9
10
Suction pipe temperature sensor error
User interface and refrigerant system
main PCB
Sensor Th
EA
11
Discharge pipe temperature sensor error
User interface and refrigerant system
main PCB
Sensor Tp
Ed
14
Water side heat exchanger water inlet
temperature sensor error
User interface and hydronic system
main PCB
Sensor Tw_in
EE
15
Hydronic system EEPROM error
User interface and hydronic system
main PCB
F1
116
DC bus voltage is too low
User interface and refrigerant system
main PCB
H0
39
Communication error between refrigerant
system main control chip and hydronic
system main control chip
User interface, refrigerant system
main control board for refrigerant
system and hydronic system main PCB
H1
40
Communication error between refrigerant
system main control chip and inverter driver
chip
User interface and refrigerant system
main PCB
H2
41
Water side heat exchanger refrigerant inlet
(liquid pipe) temperature sensor error
User interface and hydronic system
main PCB
Sensor T2
H3
42
Water side heat exchanger refrigerant outlet
(gas pipe) temperature sensor error
User interface and hydronic system
main PCB
Sensor T2B
H5
44
Room temperature sensor error
User interface and hydronic system
main PCB
Sensor Ta
H6
HH
45
55
DC fan error
User interface and refrigerant system
main PCB
H7
46
Abnormal main circuit voltage
User interface and refrigerant system
main PCB
Midea CAC Confidential