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Daikin
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FTKD50BVMT
Daikin FTKD50BVMT User Manual
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Outdoor Unit
Si04
-306
166
Rem
o
val Procedu
re
9
Disconnect t
he
connector
s.
S3
1: to
the SP
M
S3
2: to
the SP
M
S3
3: to
the M
ID
S7
1: to
the M
ID
S91: fi
n thermi
stor
10
Control
PCB
(
outdoor
unit)
S10
: to th
e termin
al
str
ip
S20
: elec
tronic
expansion val
ve
S31
: to
CN
14
of th
e
SPM
S32
: to
CN
11
of th
e
SPM
S33
: to
S34
of the MID
S40
: overl
oad protec
tor
S51
: to
S52
of the
servi
ce monito
r PCB
S71
: to
S72
of the MID
S80
: fou
r
wa
y valve
S90
: ther
mistors
(di
scharge pipe,
outdoor ai
r,
heat exchanger
)
S91
: fi
n thermi
stor
S101
: to
S102
of the
servi
ce monito
r PCB
Step
Procedure
Points
174
176
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
11
R410A Series
11
R22 Series
14
Part 2 Specifications
19
Specifications
19
Cooling Only - R410A Series
19
Cooling Only - R22 Series
22
Heat Pump - R410A Series
26
Heat Pump - R22 Series
31
Part 3 Printed Circuit Board
36
Connector Wiring Diagram
36
Printed Circuit Board Connector Wiring Diagram
37
Indoor Unit
37
Outdoor Unit
39
Part 4 Function and Control
42
Main Functions
43
Frequency Principle
43
Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing
45
Fan Speed Control for Indoor Units
46
Programme Dry Function
47
Automatic Operation
48
Night Set Mode
49
Intelligent Eye
50
Home Leave Operation
52
Inverter Powerful Operation
53
Other Functions
54
Function of Main Structural Parts
55
Function of Thermistor
55
Cooling Only Model
56
Control Specification
57
Mode Hierarchy
57
Frequency Control
58
Controls at Mode Changing / Start-Up
60
Discharge Pipe Temperature Control
61
Input Current Control
61
Freeze-Up Protection Control
62
Heating Peak-Cut Control
62
Fan Control
63
Moisture Protection Function 2
63
Low Hz High Pressure Limit
64
Defrost Control
64
Electronic Expansion Valve Control
65
Discharge Pipe
66
Malfunctions
68
Forced Operation Mode
69
Additional Function
69
Part 5 System Configuration
70
System Configuration
71
Instruction
72
Safety Precautions
72
Installation Site
73
Electrical Work
73
Names of Parts
74
I Outdoor Unit
75
Remote Controller
76
Preparation before Operation
77
AUTO · DRY · COOL · HEAT · FAN Operation
80
Adjusting the Air Flow Direction
82
POWERFUL Operation
84
OUTDOOR UNIT SILENT Operation
85
HOME LEAVE Operation
86
INTELLIGENT EYE Operation
88
TIMER Operation
90
Care and Cleaning
92
I Air Filter
93
Before a Long Idle Period
94
Troubleshooting
95
Check Again
96
Part 6 Service Diagnosis
98
Caution for Diagnosis
99
Problem Symptoms and Measures
100
Service Check Function
101
Troubleshooting
102
Error Codes and Description
102
Indoor Unit PCB Abnormality
103
Freeze-Up Protection Control or High Pressure Control
104
Fan Motor (DC Motor) or Related Abnormality
106
Thermistor or Related Abnormality (Indoor Unit)
108
Signal Transmission Error (between Indoor and Outdoor Units)
109
OL Activation (Compressor Overload)
110
Compressor Lock
111
DC Fan Lock
112
Input over Current Detection
113
Four Way Valve Abnormality
115
Discharge Pipe Temperature Control
117
Position Sensor Abnormality
118
CT or Related Abnormality
119
Thermistor or Related Abnormality (Outdoor Unit)
121
Electrical Box Temperature Rise
123
Radiation Fin Temperature Rise
125
Output over Current Detection
127
Insufficient Gas
129
Low-Voltage Detection
131
High Pressure Control in Cooling
132
Check
134
How to Check
134
Si04
135
Four Way Valve Performance Check
136
Thermistor Resistance Check
137
Installation Condition Check
138
Discharge Pressure Check
139
Outdoor Unit Fan System Check
139
Power Supply Waveforms Check
140
Capacitor Voltage Check
141
Power Transistor Check
141
Main Circuit Electrolytic Capacitor Check
142
Part 7 Removal Procedure
144
Indoor Unit
145
Removal of the Air Filter / Front Panel
145
Removal of the Front Grille
148
Removal of the Horizontal Blades / Vertical Blades
150
Removal of the Electrical Box / PCB / Swing Motor
152
Removal of the Heat Exchanger
158
Removal of the Fan Rotor / Fan Motor
161
Outdoor Unit
163
Removal of the Panels and Plates
163
Removal of the Fan Motor / Propeller Fan
167
Removal of the PCB / Electrical Box
171
Removal of the Reactor
179
Removal of the Sound Blanket
181
Removal of the Four Way Valve
183
Removal of the Electronic Expansion Valve
184
Removal of the Compressor
185
Part 8 Others
188
Others
189
Test Run from the Remote Controller
189
Jumper Settings
190
Part 9 Appendix
192
Piping Diagrams
193
Indoor Units
193
Outdoor Units
195
Heat Pump
197
Wiring Diagrams
199
Indoor Units
199
Outdoor Units
202
Index
204
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Daikin FTKD50BVMT Specifications
General
Brand
Daikin
Model
FTKD50BVMT
Category
Air Conditioner
Language
English
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