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RKS20CVMB
Daikin RKS20CVMB Service Manual
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Ser
vice
Manual
Inverter Pair
Wall Mounted Type C-Series
D-Series
[Applied Models]
z
Inverter Pair : Cooling Only
z
Inverter Pair : Heat Pump
SiENBE04-401A
2
Table of Contents
Default Chapter
3
Table of Contents
3
Introduction
6
Safety Cautions
6
Caution in Repair
6
Cautions Regarding Products after Repair
7
Inspection after Repair
8
Using Icons
9
Using Icons List
9
Part 1 List of Functions
10
List of Functions Part
10
List of Functions
11
High Grade Models
11
Standard Grade Models
14
Non-Lnverter Models
18
Part 2 Specifications
20
Cooling Only
21
Ftks25Cvmb(9)(8)
21
Heat Pump
29
Ftxs35Cvmb(9)(8)
30
Part 3 Printed Circuit Board Connector Wiring Diagram
46
Printed Circuit Board Connector Wiring Diagram
47
Indoor Unit
47
Outdoor Unit / RK(X)S-C, ARK(X)S-C
49
Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C
51
Part 4 Function and Control
52
Main Functions
53
Frequency Principle
53
Power-Airflow Dual Flaps, Wide-Angle Louvres and Auto-Swing
55
Fan Speed Control for Indoor Units
56
Programme Dry Function
57
Automatic Operation
58
NIGHT SET Mode
59
Intelligent Eye
60
HOME LEAVE Operation
62
Inverter POWERFUL Operation
63
Other Functions
64
Function of Main Structural Parts
65
Function of Thermistor
65
Cooling Only Model
66
Control Specification
67
Mode Hierarchy
67
Frequency Control
68
Controls at Mode Changing / Start-Up
70
Discharge Pipe Control
71
Input Current Control
72
Freeze-Up Protection Control
72
Heating Peak-Cut Control
73
Fan Control
73
Liquid Compression Protection Function 2
73
Defrost Control
74
Electronic Expansion Valve Control
75
Malfunctions
78
Forced Operation Mode
79
Additional Function
79
Facility Setting Jumper (Cooling at Low Outdoor Temperature)
80
Part 5 System Configuration
82
System Configuration
83
Instruction
84
Safety Precautions
84
Installation Site
85
Electrical Work
85
Names of Parts
86
Outdoor Unit
87
Remote Control
88
Preparation before Operation
89
Auto Dry Cool Heat Fan Operation
92
Adjusting the Air Flow Direction
94
POWERFUL Operation
96
OUTDOOR UNIT SILENT Operation
97
HOME LEAVE Operation
98
INTELLIGENT EYE Operation
100
TIMER Operation
102
Care and Cleaning
104
Air Filter
105
Before a Long Idle Period
106
Troubleshooting
107
Check Again
108
Part 6 Service Diagnosis
112
Caution for Diagnosis
113
Problem Symptoms and Measures
114
Service Check Function
115
Troubleshooting
118
Error Codes and Description
118
Indoor Unit PCB Abnormality
119
Freeze-Up Protection Control or High Pressure Control
120
Fan Motor (AC Motor) or Related Abnormality
122
Thermistor or Related Abnormality (Indoor Unit)
123
Signal Transmission Error (between Indoor and Outdoor Unit)
124
OL Activation (Compressor Overload)
125
Compressor Lock
126
DC Fan Lock
127
Input over Current Detection
128
Four Way Valve Abnormality
129
Discharge Pipe Temperature Control
131
High Pressure Control in Cooling
132
Position Sensor Abnormality
134
DC Voltage / Current Sensor Abnormality
135
Thermistor or Related Abnormality (Outdoor Unit)
136
Electrical Box Temperature Rise
138
Radiation Fin Temperature Rise
140
Output over Current Detection
142
Insufficient Gas
144
Over-Voltage Detection
146
Check
147
How to Check
147
Four Way Valve Performance Check
148
Thermistor Resistance Check
149
Installation Condition Check
150
Discharge Pressure Check
150
Outdoor Unit Fan System Check
151
Power Supply Waveforms Check
152
Power Transistor Check
153
Hall IC Check
154
Part 7 Removal Procedure
156
Indoor Unit
157
Removal of Air Filter
157
Removal of Front Grille
160
Removal of Horizontal Blade and Vertical Blade
163
Removal of Electrical Box, PCB and Swing Motor
165
Removal of Heat Exchanger
171
Install of Drain Plug
174
Removal of Fan Rotor and Fan Motor
175
Outdoor Unit / RK(X)S-C, ARK(X)S-C
179
Removal of Panels and Fan Motor
179
Removal of Electrical Box
186
Removal of Reactor and Partition Plate
188
Removal of Sound Blanket
190
Removal of Four Way Valve
192
Removal of Compressor
194
Removal of PCB
196
Outdoor Unit / RK(X)H-C, ARK(X)H-C, R(Y)N-C
199
Removal of External Panels
199
Removal of Bell Mouth
202
Removal of PCB and Electrical Box
203
Removal of Propeller Fan and Fan Motor
210
Removal of Partition Plate and Reactor
213
Removal of Sound Insulation Pad
216
Removal of Electronic Expansion Valve and Four Way Valve
219
Removal of Compressor
223
Part 8 Others
226
Others
227
Test Run from the Remote Control
227
Jumper Settings
228
Part 9 Appendix
230
Piping Diagrams
231
Indoor Units
231
Outdoor Units
232
Wiring Diagrams
236
Indoor Units
236
Outdoor Units
237
Index
240
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Daikin RKS20CVMB Specifications
General
Cooling Capacity
2.0 kW
Heating Capacity
2.5 kW
Refrigerant
R32
Weight (Indoor Unit)
9 kg
Power Supply
220-240 V, 50 Hz
Type
Split AC
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