Daikin UAL-A Series, Engineering Data

Page: 42 / 52

41
Error Code
S/N Code Symptoms S/N Code Symptoms
1
0 0#-slave communication failure 26 43 TH4 temperature sensor malfunction
2 01~14 1# ~14# slave communication failure 27 44
Header pipe water outlet temperature sensor
failure
3 16 Overload of compressor/fan in #1 28 45 TH6 temperature sensor malfunction
4
17
Overload of compressor/fan in #2 29 46 TH7 temperature sensor malfunction
5 18 Pump overload 30 47 TH8 temperature sensor malfunction
6 19 Water fl ow is too small 31 48 TH9 temperature sensor malfunction
7
20 High pressure of #1 32 49 TH10 temperature sensor malfunction
8 21 Low pressure of #1 33 50 TH11 temperature sensor malfunction
9 24 High pressure of #2 34 51 TH12 temperature sensor malfunction
10 25 Temperature of inlet/outlet water is too low 35 52 Low pressure sensor malfunction of #2
11
26 Overload of electric heater in water system 36 53 Low pressure sensor malfunction of #1
12 27 Ambient temperature is too high/low 37 54
Memory failure
13 29 Superheat of #1 is too low 38 60
No system can be started
14 31 and master machine communication failure 39 63 Fan overload failure of System 1
15 32 suction temperature #1 is too high 40 64 Fan overload failure of System 2
16 33 discharge temperature #1 is too high 41 65
Too large water inlet and outlet water
temperature difference failure
17
34 suction temperature #2 is too high 42 66
Reverse connection of water inlet and outlet
water temperature sensors
18 35 discharge temperature #2 is too high 43 67
Failure of water inlet temperature sensor of the
master machine
19 36 Low pressure of #2 44 68 Overload failure of Compressor 2 of System 1
20 37 Superheat of #2 is too low 45 69 Overload failure of Compressor 2 of System 2
21 38 Refrigerant leakage in #1 46 70 Abnormal exhaust temperature of System 1
22 39 Refrigerant leakage in #2 47
71
Abnormal exhaust temperature of System 2
23 40 TH1 temperature sensor malfunction 48 78
Communication failure of all the slave
machines
24 41 TH2 temperature sensor malfunction 49 F6
Communication failure between wired
controller and master unit
25 42 TH3 temperature sensor malfunction 50 ERRO
Dialing setting error
Error Code and Running Status
■ Characters displayed by the LED indicator are explained in the following table.
Character Content Character Content Character Content Character Content Character Content Character Content
0/O 2 4 6 8 A
1
3 5
7
9 B
Character Content Character Content Character Content Character Content Character Content Character Content
C
E
H
N
R
U
D
F L P T
Y