Wellea Monobloc
46
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 generatrix 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 PCB 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
Table continued on next page …
