Service manual

Table of Contents
Page
1 OPERATING RANGE 1
2 SPECIFICATIONS
2-1 Unit Specification 2
2-2 Major Components Specifications 10
2-3 Other Component Specifications 16
3 DIMENSIONAL DATA 22
4 REFRIGERANT FLOW DIAGRAM 26
5 PERFORMANCE DATA
5-1 Air Throw Distance Chart 28
5-2 Cooling Capacity 31
6 ELECTRICAL DATA
6-1 Electrical Characteristic 37
6-2 Electric Wiring Diagrams 41
7 INSTALLATION INSTRUCTION
7-1 Installation Site Selection 45
7-2 Remote Control Unit Installation P osition 47
7-3 Recommended Wire Leng th and Diameter 48
8 FUNCTION
8-1 Room Temperature Control 49
8-2 Dry Operation 50
8-3 Freeze Prevention 50
8-4 Low Ambient Fan Speed Control 51
9 REFRIGERANT R407C:SPECIAL PRECAUTION WHEN SERVICING UNIT
9-1 Characteristics of new refrigerant R407c 53
9-2 Checklist before servicing 53
9-3 Tools specifically for R407c 54
9-4 For tubing installation procedures 54
9-5 In case of compressor malfunction 55
9-6 In case refrigerant is leaking 57
9-7 Charging additional refrigerant 59
9-8 Retro-fitting existing systems 59
10 TROUBLESHOOTING
10-1 Check before and after troubleshooting 60
10-2 Air Conditioner Does not operate 61
10-3 Some Parts of Air Conditioner does not operate 66
10-4 Air Conditioner operates, but abnormalities are observed 69
10-5 If a Sensor is defective 70
11 CHECKING ELECTRICAL COMPONENTS
11-1 Measure of insulation Resistance 71
11-2 Check Continuity of fuse on PCB Ass’y 72