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FTXB18AXVJU
Daikin FTXB18AXVJU User Manual
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SER
VICE MANUAL
Inverter Wall Mounted Single Split
dd
SM-5WM-Y
-NA-B1
MODELS
Cooling Only
FTKB09AXVJU
RKB09AXVJU
FTKB12AXVJU
RKB12AXVJU
FTKB18AXVJU
RKB18AXVJU
FTKB24AXVJU
RKB24AXVJU
FTKN09AXVJU
RKN09AXVJU
FTKN12AXVJU
RKN12AXVJU
FTKN18AXVJU
RKN18AXVJU
FTKN24AXVJU
RKN24AXVJU
Heatpump
FTXB09AXVJU
RXB09AXVJU
FTXB12AXVJU
RXB12AXVJU
FTXB18AXVJU
RXB18AXVJU
FTXB24AXVJU
RXB24AXVJU
FTXN09AXVJU
RXN09AXVJU
FTXN12AXVJU
RXN12AXVJU
FTXN18AXVJU
RXN18AXVJU
FTXN24AXVJU
RXN24AXVJU
2
Table of Contents
Default Chapter
1
Service Manual
1
Table of Contents
3
1 Inverter Single Split
9
Product Line-Up
9
Printed Circuit Board (PCB) Connector Wiring Diagram
11
Piping Length & Elevation
18
Outline & Dimension
19
Engineering Data
23
2 Function & Control
25
Temperature Control
25
Cooling and Heating Mode Operation
25
Dry Mode
26
Fan Mode
27
Auto Mode
27
Cold Draft Prevention
27
Sleep Mode
28
Quiet Function
28
Eco+ Function
28
Powerful Function
29
Indoor-Outdoor Communication
29
Thermistors in RK(X)B,RK(X)N
30
Minimum off Time Control
31
Auto Restart
31
Auto Random Restart
31
Four Way Valve Control
32
Outdoor Fan Control
32
Rotation Regulating Functions
33
Defrost Cycle
34
Indoor Coil Freeze Prevention
35
High Pressure Protection
35
Discharge Pipe Temperature Control
36
Overall Current Control
36
Overall Frequency Control
37
3 Service Diagnosis
39
Error Indication from Indoor
39
Error Code Retrieved by Handset
41
Error Code Description for Inverter
42
Wiring Connection
69
Refrigerant Diagram
73
Appendix A
75
Installation Condition Check
79
Outdoor Fan System Check
80
Trial Operation and Field Settings
82
4
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Daikin FTXB18AXVJU Specifications
General
Indoor Unit Weight (kg)
11
Cooling Capacity (BTU)
18000
Heating Capacity (BTU)
18000
Refrigerant
R32
Power Supply
1 Phase
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