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Daikin
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FTKN24NMVJU
Daikin FTKN24NMVJU Service Manual
133 pages
Manual
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Service
Manual
Inverter Pair
Wall Mounted Type
FTK(X)N-N, FTK(X)-N Series
SiUS041501E
[Applied Models]
z
Inverter Pair : Cooling Only
z
Inve
rter P
air : Heat P
ump
2
Table of Contents
Default Chapter
3
Table of Contents
3
Safety Cautions
6
Warnings and Cautions Regarding Safety of Workers
6
Warnings and Cautions Regarding Safety of Users
8
Used Icons
11
Part 1 List of Functions
12
Functions
13
Part 2 Specifications
17
Specifications
18
Cooling Only
18
Heat Pump
22
Part 3 Printed Circuit Board Connector Wiring Diagram
26
Indoor Unit
27
09/12 Class
27
18/24 Class
29
Outdoor Unit
31
09/12 Class, RKN18NMVJU
31
RXN18NMVJU, RK(X)18NMVJU, 24 Class
32
Part 4 Function and Control
33
Main Functions
34
Temperature Control
34
Frequency Principle
34
Airflow Direction Control
36
Fan Speed Control for Indoor Unit
37
Program Dry Operation
38
Automatic Operation
39
Thermostat Control
40
NIGHT SET Mode
41
ECONO Operation
41
Inverter POWERFUL Operation
42
Other Functions
43
Function of Thermistor
44
Control Specification
45
Mode Hierarchy
45
Frequency Control
46
Controls at Mode Changing / Start-Up
48
Compressor Protection Function
49
Discharge Pipe Temperature Control
50
Input Current Control
51
Freeze-Up Protection Control
52
Heating Peak-Cut Control
52
Outdoor Fan Control
53
Liquid Compression Protection Function
53
Defrost Control
54
Electronic Expansion Valve Control
55
Pressure Equalizing Control
56
Malfunctions
58
Part 5 Remote Controller
59
Cooling Only
60
Heat Pump
62
Part 6 Service Diagnosis
64
General Problem Symptoms and Check Items
66
Troubleshooting with LED
67
Indoor Unit
67
Outdoor Unit
67
Service Diagnosis
68
Troubleshooting
71
Error Codes and Description
71
Indoor Unit PCB Abnormality
72
Freeze-Up Protection Control / Heating Peak-Cut Control
73
Fan Motor (DC Motor) or Related Abnormality
74
Thermistor or Related Abnormality (Indoor Unit)
76
Low-Voltage Detection or Over-Voltage Detection
77
Signal Transmission Error (between Indoor Unit and Outdoor Unit)
79
Unspecified Voltage (between Indoor Unit and Outdoor Unit)
81
Outdoor Unit PCB Abnormality
82
OL Activation (Compressor Overload)
83
Compressor Lock
85
DC Fan Lock
86
Input Overcurrent Detection
87
Four Way Valve Abnormality
88
Discharge Pipe Temperature Control
90
High Pressure Control in Cooling
91
Compressor System Sensor Abnormality
93
Position Sensor Abnormality
94
Thermistor or Related Abnormality (Outdoor Unit)
96
Electrical Box Temperature Rise
98
Radiation Fin Temperature Rise
99
Output Overcurrent Detection
100
Check
102
Thermistor Resistance Check
102
Fan Motor Connector Output Check
103
Power Supply Waveforms Check
104
Electronic Expansion Valve Check
104
Four Way Valve Performance Check
105
Inverter Unit Refrigerant System Check
105
Inverter Analyzer Check
106
Rotation Pulse Check on the Outdoor Unit PCB
108
Installation Condition Check
109
Discharge Pressure Check
109
Outdoor Fan System Check
110
Main Circuit Short Check
110
Power Module Check
111
Part 7 Trial Operation and Field Settings
113
Tips for Servicing
114
Pump down Operation
114
Forced Cooling Operation
114
Trial Operation
115
Field Settings
116
Temperature Display Switch
116
When 2 Units Are Installed in 1 Room
117
Facility Setting Switch (Cooling at Low Outdoor Temperature) (Only for RK(X) Series)
118
Silicon Grease on Power Transistor / Diode Bridge
119
Part 8 Appendix
120
Piping Diagrams
121
Indoor Unit
121
Outdoor Unit
123
Wiring Diagrams
129
Indoor Unit
129
Outdoor Unit
130
Other manuals for Daikin FTKN24NMVJU
Operation Manual
31 pages
Installation Manual
26 pages
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Daikin FTKN24NMVJU Specifications
General
ISEER
4.7
Refrigerant
R32
Type
Split AC
Noise Level
49 dB
Power Supply
220-240 V, 50 Hz
Energy Efficiency Ratio (Heating)
3.60
Noise Level (Indoor)
45 dB(A)
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