Mitsubishi Heavy Industries FDT28KXE6A User Manual

-
1
-
Manual No. '09·KX-SM -128
INVERTER DRIVEN MULTI-INDOOR UNIT
CLIMATE CONTROL SYSTEM
SERVICE MANUAL
Alternative refrigerant R410A use models
(OUTDOOR UNIT)
• Single use (Used also for combination)
FDC335KXE6-K, 400KXE6, 450KXE6, 504KXE6, 560KXE6, 560KXE6-K, 615KXE6, 680KXE6
• Combination use
FDC753KXE6, 800KXE6, 850KXE6, 900KXE6, 960KXE6, 1010KXE6, 1065KXE6, 1130KXE6,
1180KXE6, 1235KXE6, 1300KXE6, 1360KXE6
(Heat pump type)
KX6 series
FDT28KXE6A
36KXE6A
45KXE6A
56KXE6A
71KXE6A
90KXE6A
112KXE6A
140KXE6A
160KXE6A
FDUM22KXE6
28KXE6
36KXE6
45KXE6
56KXE6
71KXE6
90KXE6
112KXE6
140KXE6
FDUH22KXE6
28KXE6
36KXE6
FDTC22KXE6A
28KXE6A
36KXE6A
45KXE6A
56KXE6A
FDQS22KXE6
28KXE6
36KXE6
45KXE6
56KXE6
FDU71KXE6
90KXE6
112KXE6
140KXE6
224KXE6
280KXE6
FDFU28KXE6
45KXE6
56KXE6
71KXE6
FDTW28KXE6
45KXE6
56KXE6
71KXE6
90KXE6
112KXE6
140KXE6
FDK22KXE6
28KXE6
36KXE6
45KXE6
56KXE6
71KXE6
FDTQ22KXE6
28KXE6
36KXE6
FDFL28KXE6
45KXE6
71KXE6
FDTS45KXE6
71KXE6
FDE36KXE6A
45KXE6A
56KXE6A
71KXE6A
112KXE6A
140KXE6A
(INDOOR UNIT) - KX6 series -
Regarding the Duct Connected-High static Pressure-type Outdoor Air Processing
Unit Series (FDU500〜1800FKXE6), refer to the DATA BOOK No.'08
• KX-DB-122
•
Note
updated November 19, 2009

Mitsubishi Heavy Industries FDT28KXE6A Specifications

General

Cooling Capacity	2.8 kW
Heating Capacity	3.2 kW
Power Source	Electric
Refrigerant	R32
Indoor Unit Weight	9 kg
Outdoor Unit Weight	28 kg
Power Supply	Single Phase
Outdoor Unit Dimensions (WxHxD)	780 x 540 x 290 mm

Summary

1 Operation Control

1.1 Wired Remote Controller

Details the functions, display, and installation precautions for the wired remote controller.

1.2 Indoor Unit Operation Control

Explains operation control functions for the indoor unit, including cooling, heating, dehumidifying, and timer operations.

1.3 Remote Controller Operation Control

Describes operation control functions managed by the remote controller, including mode switching and power failure compensation.

1.4 Outdoor Unit Operation Control

Explains outdoor unit operation control functions for various modes and components, including compressor and fan control.

(A) Normal Control

Details the normal operation control functions of major components within the outdoor unit.

(B) Optional Controls

Describes optional controls such as external input, silent mode, and snow protection for outdoor units.

2 System Troubleshooting

2.1 Troubleshooting Basics

Covers basic troubleshooting steps, error data analysis, and identifying common causes of unit issues.

2.2 Troubleshooting Explanation

Provides detailed explanations for troubleshooting specific errors like DC15V checks and power transistor shorts.

2.3 Troubleshooting Contents

Lists various error codes for indoor and outdoor units, their classification, and corresponding page numbers for detailed inspection.

2.4 Outdoor Unit Control PCB Replacement

Step-by-step procedure for replacing the outdoor unit control PCB, including safety precautions.

2.5 Inverter PCB Replacement

Detailed procedure for replacing the inverter PCB, emphasizing safety and component handling.

3 Electrical Wiring

3.1 Indoor Unit Wiring and Installation

Wiring diagrams and installation instructions for various indoor unit types, including ceiling cassette and wall-mounted.

3.2 Outdoor Unit Wiring

Wiring diagram for the outdoor unit, illustrating connections for various components and models.

4 Piping System

4.1 Piping System Diagrams and Specifications

Provides piping diagrams and specifications for different outdoor and indoor unit combinations and capacities.

5 Application Data

5.1 Indoor Unit Installation Procedures

Details installation procedures for various indoor unit types, including safety precautions and location selection.