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SERVICE BY QUALIFIED TECHNICIANS
M a int e na nc e : Table of refrigerant gas pressure in different temperature.
Pressure(Mpa)
Temp.℃(R410a)
Temp. ℃(R32)
Pressure(Mpa)
Temp. ℃(R410a)
Temp.℃(R32)
Please examine the pressure gauge which indicates the refrigerant gas pressure of the unit.
It might need to have maintenance service if the pressure much different from normal.
The Error codes might be changed by different models, please contact the service technicians.
Error
Code
E01
Communication error with control panel
E02
Communication error with driver
E03
AC current protection
E04
AC voltage protection
E05
DC voltage protection
E06
Phase current protection
E07
IPM over heat protection
E08
DC current protection
Exhaust temperature over protection
E09
Ambient temperature limit operation
E10
E11
High pressure protection
Low pressure protection
E12
E13
Reserved
Water outlet temp. overcooling protection
E14
E15
Coil temp. over heat at cooling mode
E16
Water outlet temp. overheat protection
E17
Water flow switch protection
E18
High pressure error
E19
Low pressure error
E20
Phase lost
E21
A phase reversal fault
The temperature difference between inlet and outlet
E22
water is too large
1
0.5
0.8
-9
4
11
-9
3.5
10
2.8
3
3.3
47
51
55
46.5
49.5
53.5
Possible Cause
1.3
1.5
1.8
19
24
31
18
23
29.5
3.5
3.8
4
57
61
64
56
60
62
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop, restart 1 min
later, locked after 3 times
Unit stop
Unit stop
Unit stop
Unit stop
Unit stop
EN
EN
2
2.3
2.5
35
39
43
33.3
38.7
42
4.5
5
5.5
70
74
80
67.5
72.5
77.4
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