Error Code - Daikin UWL-B5 Series Catalogue/Engineering Data

Error code

S/N Code
1 0 0#-slave communication failure
2 01...14 1# ~14# slave communication failure
Heat source side pump/ cooling
3 16
tower fan overload
4 17 Overload of compressor in #2
5 18 Using side pump overload
6 19 Lack of water flow of evaporator
7 20 High pressure of #1
8 21 Low pressure of #1
9 22 Lack of water flow of condenser
10 23 Reserved
11 24 High pressure of #2
Over-low of water temperature of
12 25
evaporator
13 26 Reserved
EWT,LWT temperature abnormal of
14 27
evaporator
15 28 High pressure of #3
16 29 Superheat of #1 is too low
17 30 Reserved
Communication failure with master
18 31
unit
19 32 Suction temperature #1 is too high
20 33 Discharge temperature #1 is too high
21 34 Suction temperature #2 is too high
22 35 Discharge temperature #2 is too high
23 36 Low pressure of #2
24 37 Superheat of #2 is too low
25 38 Refrigerant leakage in #1
26 39 Refrigerant leakage in #2
Discharge temperature sensor
27 40
malfunction of #1
Discharge temperature sensor
28 41
malfunction of #2
Discharge temperature sensor
29 42
malfunction of #3
Discharge temperature sensor
30 43
malfunction of #4
Main pipe leaving water temperature
31 44
sensor malfunction
Symptoms S/N Code
Entering water temperature sensor malfunction
32 45
of evaporator
Leaving water temperature sensor malfunction
33 46
of evaporator
Entering water temperature sensor malfunction
34 47
of condenser
35 48 Suction temperature sensor malfunction of #1
36 49 Suction temperature sensor malfunction of #2
37 50 Suction temperature sensor malfunction of #3
38 51 Suction temperature sensor malfunction of #4
39 52 Low pressure sensor malfunction of #2
40 53 Low pressure sensor malfunction of #1
41 54 Memory failure
42 55 Over-low of water temperature of condenser
43 56 Overload of compressor in #1
44 57 Overload of compressor in #3
45 58 Overload of compressor in #4
46 59 High pressure of #4
47 60 Low pressure of #3
48 61 Low pressure of #4
49 62 Superheat of #3 is too low
50 63 Superheat of #4 is too low
51 64 Reserved
52 65 Suction temperature #3 is too high
53 66 Suction temperature #4 is too high
54 67 Discharge temperature #3 is too high
55 68 Discharge temperature #4 is too high
56 69 Refrigerant leakage in #3
57 70 Refrigerant leakage in #4
58 71 Low pressure sensor malfunction of #3
59 72 Low pressure sensor malfunction of #4
60 78 Communication failure of all the slave units
61 ERRO Dialing setting error
Symptoms
39