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Model
CS-F24DB4E5 CU-B24DBE5 CS-F28DB4E5 CU-B28DBE5 CS-F28DB4E5 CU-B28DBE8 CS-F34DB4E5 CU-B34DBE5 CS-F34DB4E5 CU-B34DBE8 CS-F43DB4E5 CU-B43DBE8 CS-F50DB4E5 CU-B50DBE8
Pages
127
Size
9.48 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner / AIR CONDITIONER
File
cs-f24db4e5-cu-b24dbe5-cs-f28db4e5-cu-b28dbe5-cs-f.pdf
Date

Panasonic CS-F24DB4E5 / CU-B24DBE5 / CS-F28DB4E5 / CU-B28DBE5 / CS-F28DB4E5 / CU-B28DBE8 / CS-F34DB4E5 / CU-B34DBE5 / CS-F34DB4E5 / CU-B34DBE8 / CS-F43DB4E5 / CU-B43DBE8 / CS-F50DB4E5 / CU-B50DBE8 Service Manual ▷ View online

109
During outdoor unit emergency operation or test operation, the LED on the P.C.B. will flash.
90
-
1.9
4.7
-
100
-
1.4
3.5
-
Resistance value (k
Ω)±5%
110
12.6. Self-diagnosis error code table
• The display screen on the wired remote control unit and the self-diagnosis LEDs (green) on the outdoor unit printed circuit board
in the outdoor unit can be used to indicate where the location of a problem is.
Refer to the table below to remove the cause of the problem, and then re-start the air conditioner system.
• If the problem disappears and operation returns to normal, the CHECK display on the remote control unit will switch off, but the
self-diagnosis LED will remain illuminated until operation is resumed.    ... illuminated. 
Wired remote 
control unit display
Outdoor unit printed circuit board 
LED
Location or problem
Check location
Abnormal 
display
Detail 
display
2
3
4
5
6
7
8
F15
-01
Drain level Float switch problem Drain pump and drain pipe, indoor unit 
connectors CN-DRMTR&CN-TH2
F16
-01
Louver switch problem
Louver motor, decorative panel connection 
terminal, or indoor unit louver motor 
connectors
F17
-02
D.C. Fan motor problem
Indoor unit D.C.Fan motor or connection 
terminals
F20
-01
Indoor temperature sensor 
problem
Indoor temperature sensor lead wire or indoor 
unit connector or CN-TH2
-02
Remote control thermistor 
problem
Remote control thermistor
F21
-01
Pipe temp. sensor problem 
(indoor unit)
Pipe temperature sensor lead wire or indoor 
unit connector CN-TH1
F26
-01
Remote control transmission 
problem
Remote control unit cable and connection 
terminals
F27
-01
Indoor/outdoor unit 
disconnection problem
Indoor/outdoor unit connection cable and 
connection terminals, or indoor unit and 
outdoor unit power supplies (indoor side)
-05
Indoor/outdoor unit connection 
error problem
Indoor/outdoor unit connection wire (indoor 
side)
-01
Indoor/outdoor unit 
disconnection problem
Indoor/outdoor unit connection cable and 
connection terminals, or indoor unit and 
outdoor unit power supplies (outdoor side)
-05
Indoor/outdoor unit connection 
problem
Indoor/outdoor unit connection wire (outdoor 
side)
F30
-01
System problem
Total capacity for the number of indoor units is 
insufficient, or over check the total capacity 
and the number of indoor units
-02
Open phase, or reversed phase 
of supply
Check the main power supply terminal board 
connections, or switch over any two of the 
power supply wires.
F31
-01
Suction pressure protection
Insufficient refrigerant
-02
High-pressure cut-off
Check the Refrigeration system
-06
4 way valve information
Check the 4 way valve or lead wire
-10
Refrigerant system problem
Insufficient refrigerant or valve operation 
(closed)
F32
-05
Compressor overcurrent 
protection
Open phase or lock in compressor
-06
Compressor discharge temp. 
protection
Insufficient refrigerant
F40
-21
Heat exchanger outlet 
temperature sensor problem
Heat exchanger outlet temperature sensor 
(COND TEMP) lead wire, connector CN-TH1
-51
Compressor discharge 
temperature sensor problem
Compressor discharge temperature sensor 
(DIS T. TEMP) lead wire, connector CN-DIS
F41
-02
High pressure switch open circuit 
problem
High-pressure switch lead wire, connector 
CN-PSW1
-12
Low pressure sensor problem
Low pressure sensor lead wire, connector
F42
-11
Current detector open circuit
Outdoor unit P.C. B (NOISE FILTER) fault or 
connector ACN2
111
112
13 Technical Data
13.1. Cooling capacity performance data
Ambient
Temperature Air Entering Condenser (
°C D.B.)
Model
Power
Return
25
°C
30
°C
35
°C
40
°C
43
°C
(CS-)
Source
Air
TC
SHC
IPT
TC
SHC
IPT
TC
SHC
IPT
TC
SHC
IPT
TC
SHC
IPT
D.B.
W.B.
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
kW
F24DB4E5
230V,
50Hz,
1 phase
17
6.87
4.50
2.00
6.60
4.46
2.16
6.21
4.32
2.36
5.74
4.13
2.59
5.41
4.00
2.74
23
19
7.26
3.70
2.12
7.03
3.73
2.29
6.67
3.67
2.50
6.22
3.54
2.74
5.90
3.48
2.91
22
7.92
2.85
2.29
7.71
2.93
2.48
7.36
2.94
2.70
6.88
2.89
2.96
6.56
2.89
3.14
17
6.79
5.19
2.00
6.53
5.12
2.16
6.15
4.95
2.35
5.70
4.76
2.57
5.38
4.60
2.72
25
19
7.26
4.58
2.13
7.01
4.56
2.30
6.64
4.45
2.50
6.18
4.29
2.73
5.86
4.19
2.90
22
7.92
3.60
2.30
7.68
3.65
2.48
7.30
3.61
2.70
6.80
3.50
2.95
6.50
3.48
3.13
17
6.71
5.97
2.00
6.45
5.87
2.16
6.09
5.66
2.35
5.66
5.43
2.55
5.35
5.30
2.71
27
19
7.27
5.38
2.14
7.00
5.32
2.31
6.60
5.15
2.51
6.14
4.97
2.73
5.81
4.82
2.89
22
7.91
4.35
2.31
7.65
4.36
2.49
7.25
4.28
2.71
6.73
4.11
2.95
6.44
4.05
3.12
17
6.69
6.56
1.99
6.45
6.39
2.15
6.07
6.07
2.32
5.70
5.70
2.49
5.42
5.42
2.60
29
19
7.26
6.17
2.13
7.00
6.09
2.30
6.60
5.88
2.48
6.19
5.66
2.66
5.88
5.53
2.78
22
7.88
5.16
2.34
7.61
5.14
2.54
7.20
5.00
2.73
6.74
4.85
2.93
6.43
4.76
3.06
17
6.68
6.55
1.98
6.45
6.45
2.15
5.64
5.64
2.30
5.73
5.73
2.45
5.46
5.46
2.53
32
19
7.25
7.17
2.12
7.00
7.00
2.30
6.60
6.60
2.46
6.22
6.22
2.62
5.93
5.93
2.70
22
7.86
6.45
2.36
7.59
6.38
2.57
7.19
6.18
2.75
6.75
6.00
2.92
6.43
5.85
3.01
F28DB4E5
230V,
50Hz,
1 phase          
400 V, 
50Hz,   
3 phase
17
7.60
4.98
2.23
7.30
4.93
2.41
6.87
4.77
2.63
6.35
4.57
2.88
5.98
4.42
3.06
23
19
8.02
4.09
2.36
7.77
4.12
2.56
7.38
4.06
2.79
6.88
3.92
3.06
6.53
3.85
3.24
22
8.76
3.15
2.55
8.53
3.24
2.76
8.14
3.26
3.01
7.61
3.20
3.30
7.25
3.19
3.50
17
7.51
5.74
2.23
7.22
5.67
2.41
6.80
5.47
2.62
6.31
5.26
2.87
5.95
5.09
3.04
25
19
8.03
5.06
2.38
7.76
5.04
2.57
7.34
4.92
2.79
6.83
4.75
3.05
6.48
4.63
3.23
22
8.76
3.98
2.57
8.49
4.03
2.77
8.08
4.00
3.02
7.52
3.87
3.29
7.19
3.84
3.49
17
7.42
6.60
2.23
7.13
6.49
2.41
6.73
6.26
2.62
6.26
6.01
2.85
5.92
5.86
3.02
27
19
8.04
5.95
2.39
7.74
5.88
2.57
7.30
5.69
2.80
6.79
5.50
3.04
6.42
5.33
3.23
22
8.75
4.81
2.58
8.46
4.82
2.78
8.02
4.73
3.02
7.45
4.54
3.29
7.12
4.48
3.48
17
7.40
7.25
2.22
7.14
7.06
2.40
6.72
6.72
2.59
6.31
6.31
2.78
6.00
6.00
2.90
29
19
8.03
6.82
2.37
7.74
6.73
2.57
7.30
6.50
2.77
6.84
6.26
2.97
6.50
6.11
3.10
22
8.72
5.71
2.61
8.42
5.68
2.83
7.96
5.53
3.05
7.46
5.37
3.27
7.11
5.26
3.41
17
7.39
7.24
2.21
7.14
7.14
2.40
6.24
6.24
2.57
6.34
6.34
2.73
6.04
6.04
2.82
32
19
8.02
7.94
2.36
7.74
7.74
2.56
7.30
7.30
2.74
6.88
6.88
2.92
6.56
6.56
3.01
22
8.69
7.13
2.64
8.40
7.05
2.86
7.95
6.84
3.06
7.46
6.64
3.26
7.11
6.47
3.36
F34DB4E5
230V,
50Hz,
1 phase
17
10.41
6.82
3.03
10.00
6.75
3.28
9.41
6.54
3.58
8.70
6.26
3.92
8.19
6.06
4.16
23
19
10.99
5.61
3.21
10.65
5.64
3.48
10.11
5.56
3.79
9.42
5.37
4.16
8.94
5.28
4.41
22
12.00
4.32
3.47
11.68
4.44
3.76
11.15
4.46
4.10
10.43
4.38
4.49
9.94
4.37
4.76
17
10.29
7.87
3.04
9.89
7.76
3.28
9.32
7.50
3.57
8.64
7.21
3.90
8.15
6.97
4.13
25
19
11.01
6.93
3.23
10.63
6.91
3.49
10.05
6.74
3.80
9.36
6.51
4.15
8.87
6.34
4.40
22
12.00
5.46
3.49
11.63
5.53
3.77
11.06
5.48
4.11
10.31
5.31
4.48
9.84
5.27
4.75
17
10.16
9.04
3.04
9.77
8.89
3.28
9.22
8.57
3.57
8.57
8.23
3.88
8.11
8.03
4.11
27
19
11.02
8.15
3.25
10.60
8.06
3.50
10.00
7.80
3.81
9.30
7.53
4.14
8.80
7.30
4.39
22
11.99
6.59
3.51
11.59
6.60
3.78
10.98
6.48
4.11
10.20
6.22
4.47
9.75
6.14
4.74
17
10.14
9.94
3.02
9.77
9.68
3.27
9.20
9.20
3.52
8.64
8.64
3.78
8.21
8.21
3.94
29
19
11.00
9.35
3.23
10.60
9.22
3.49
10.00
8.90
3.76
9.37
8.58
4.04
8.91
8.37
4.21
22
11.94
7.82
3.56
11.53
7.79
3.85
10.91
7.58
4.15
10.21
7.35
4.45
9.74
7.21
4.64
17
10.12
9.92
3.01
9.78
9.78
3.26
8.55
8.55
3.49
8.69
8.69
3.72
8.28
8.28
3.83
32
19
10.98 10.87
3.22
10.60 10.60
3.49
10.01 10.01
3.73
9.42
9.42
3.98
8.98
8.98
4.10
22
11.91
9.77
3.59
11.50
9.66
3.89
10.90
9.37
4.17
10.22
9.10
4.44
9.74
8.86
4.57
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