ERROR CODE & EXPLANATION
Should there be system fault on the
main board, Please contact with sales
or
specially trained personnel!
green LED flashes apart from showing
the error code if the system make fault.
Hold down “Set” and “Up” keys for 5
sec to send the fault reset command to
the main baord.
The explanation of err code shown as below:
Err code
Explanation
Err code
Explanation
High discharge pressure protection
2
1
Filter dirty 1
16
2
Coil sensor fault 1
17
Fan motor overload
Reserved
3
18
Overflow protection
Source Water flow protection
4
refrigerating fluid lack 1
19
Source
water
temperature
protection
Compressor suction temperature
protection 1
20
5
Phase lost, reversal and etc protection
6
Compressor overload 1
21
Low suction pressure protection
1
7
22
Heat protection
High discharge pressure protection
1
8
23
Fire protection
9
Filter dirty 2
24
Air return sensor fault
10
Coil sensor fault 2
25
Communication fault
Reserved
11
26
Hot water sensor fault
External interlock
12
refrigerating fluid lack 2
27
Compressor suction temperature
protection 2
Chilled
Water flow protection
28
13
chilled water anti freeze
14
Compressor overload 2
29
Low suction pressure protection
2
15
30
Chilled water sensor fault
Filter dirty
5
49
31
Source water sensor fault
Coil sensor fault
5
50
32
Air return humidity sensor fault
Filter dirty
3
33
51
Coil sensor fault
3
refrigerating fluid lack
5
34
52
Reserved
35
53
Compressor suction temperature
protection
5
refrigerating fluid lack
3
Compressor overload
5
36
54
Low suction pressure protection
5
37
Compressor suction temperature
protection
3
55
Compressor overload
3
High discharge pressure protection
5
38
56
Low suction pressure protection 3
Filter dirty
6
39
57
High discharge pressure protection 3
Coil sensor fault
6
40
58
Filter dirty
4
41
59
Coil sensor fault
4
refrigerating fluid lack
6
42
60
Reserved
43
61
Compressor suction temperature
protection
6
refrigerating fluid lack
4
Compressor overload
6
44
62
Low suction pressure protection
6
45
Compressor suction temperature
protection
4
63
Compressor overload
4
High discharge pressure protection
6
46
64
Low suction pressure protection
4
daughter board 1 communication fault
47
65
High discharge pressure protection
4
daughter board 2 communication fault
48
66
low outlet chilled water temperature
protection
Chilled water sensor fault
67
68
Temperature transfinite fault
69
6
