
Premium DC Inverter Series Cassette Type Unit
31
6 Test Running
6.1 Trial Operation and Testing
(1). The meaning of error codes as shown below:
Table 6.1
Number
Error code
Error
Remarks
1
E1
Compressor high pressure protection
2
E2
Indoor anti-freeze protection
3
E3
Compressor low pressure protection, refrigerant
lack protection and refrigerant colleting mode
4
E4
Compressor high discharge temperature protection
5
E6
Communication error
6
E8
Indoor fan motor error
7
E9
Full water protection
8
F0
Indoor ambient temperature sensor error
9
F1
Evaporator temperature sensor error
10
F2
Condenser temperature sensor error
11
F3
Outdoor ambient temperature sensor error
12
F4
Discharge temperature sensor error
13
F5
Temperature sensor error of wired controller
14
EE
Outdoor memory chip error
15
PF
Electric box sensor error
16
H3
Compressor overload protection
17
H4
Overloading
18
H5
IPM protection
19
H6
DC fan motor error
20
H7
Drive desynchronizing protection
21
Hc
Pfc protection
22
Lc
Activation failure
23
Ld
Compressor phase sequence protection
24
LE
Compressor stalling protection
25
LF
Power protection
26
Lp
Indoor and outdoor mismatch
27
U7
4-way valve direction changing protection
28
P0
Drive reset protection
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