M thermal Mono
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200208
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ual
2.4
Digital Display Output
Table 4-2.9: Digital display output in different operating states
Outdoor unit state
Parameters displayed on hydronic
system DSP1
Parameters displayed on refrigerant
system DSP1
On standby
0
0
Normal operation
Leaving water temperature (°C)
Running speed of the compressor in
rotations per second
Error or protection
Error or protection code
Error or protection code
2.5
DIP Switch Settings (Modbus function will be available in 2020-5-30)
The rotating coded switch S3(0-F) on the main control board of hydraulic module is used for setting the Modbus
address. By defaulting the units have this coded switch positioned=0, but this corresponds to the Modbus address 16,
while the others positions correspond the number, e.g. pos=2 is address 2, pos=5 is address 5.
Figure 4-2.9 Rotating switch
Figure 4-2.10: Connection
Figure 4-2.11: Wiring
Midea CAC Confidential
M thermal Mono
202008
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
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Mono
Содержание 06RY1
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