Error Codes - mundoclima MUENR-H12 Installation & Owner's Manual

14.3 Error codes

A series of error codes and corresponding meaning can be found in the table below.
Reset the unit by turning the unit ON or OFF.
If Resetting the unit is invalid, contact your local dealer.
UPPER UNIT ERROR MALFUNCTION
DISPLAY No. CODE OR PROTECTION
Water flow malfunction(after 3
1
times E8)
Communication malfunction
between controller
3
and hydraulic module
Total outlet water
4
temp.sensor(T1) malfunction
Buffer tank upper
8
temp.sensor(Tbt) malfunction
9 Water flow malfunction
Solar temp.sensor(Tsolar)
12
malfunction
Inlet water temp.sensor
14
(Tw_in) malfunction
Hydraulic module EEprom
15
malfunction
Communication malfunction
between main control board
39
and hydraulic module board
Liquid refrigerant
41
temp.sensor(T2) malfunction
Gas refrigerant
42
temp.sensor(T2B) malfunction
Room temp.sensor(Ta)
44
malfunction
Outlet water for zone 2
48
temp.sensor (Tw2) malfunction
Outlet water temp.sensor
49
(Tw_out) malfunction
Three times PP protection
50
and Tw_out below 7 ℃
Communication malfunction
52 between master unit and
slave unit
25
31
UPPER UNIT ERROR
DISPLAY No. CODE
38
2
6
7
10
11
40
43
45
46
47
54
55
57
20
21
23
24
49
MALFUNCTION
OR PROTECTION
| Tw_out-Tw_in | abnormal
protection
Phase loss or neutral wire and
live wire are connected
reversely
Air side heat exchanger
temperature sensor（T3）
malfunction
The ambient temperature
sensor (T4)malfunction
Suction temperature
sensor(Th) malfunction
Discharge temperature
sensor(Tp) malfunction
Communication malfunction
between main control board
and inverter module
Three times L0 protection
The DC fan malfunction
Voltage protection
Pressure sensor malfunction
Inverter module board EE
prom malfunction
10 times H6 in 2 hours
Low pressure protection in
cooling mode
Low pressure switch protection
High pressure switch protection
Compressor overcurrent
protection.
Comp discharge temp. too high
protection