– 3 –
CONTENTS
1. SPECIFICATIONS ................................................................................................................................ 4
1-1. Indoor Unit ...........................................................................................................................................................4
1-2. Outdoor Unit...................................................................................................................................................... 10
1-3. Combination Specifications of Indoor Units with Outdoor Units ................................................................ 14
1-4. Operation Characteristic Curve ...................................................................................................................... 17
2. AIR DUCTING WORK ........................................................................................................................ 24
2-1. Static Pressure Characteristics of Each Model ............................................................................................. 24
3. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ............................................................................... 27
3-1. Indoor Unit ........................................................................................................................................................ 27
3-2. Outdoor Unit...................................................................................................................................................... 32
4. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM....................................................................... 35
4-1. Indoor Unit/Outdoor Unit ................................................................................................................................. 35
5. WIRING DIAGRAM............................................................................................................................. 43
5-1. Indoor Unit ........................................................................................................................................................ 43
5-2. Outdoor Unit...................................................................................................................................................... 47
6. SPECIFICATIONS OF ELECTRICAL PARTS................................................................................... 50
6-1. Indoor Unit ........................................................................................................................................................ 50
6-2. Outdoor Unit...................................................................................................................................................... 52
6-3. Accessory Separate Soldparts ....................................................................................................................... 54
7. REFRIGERANT R410A ..................................................................................................................... 55
7-1. Safety During Installation/Servicing ............................................................................................................... 55
7-2. Refrigerant Piping Installation ...................................................................................................................... 55
7-3. Tools .................................................................................................................................................................. 59
7-4. Recharging of Refrigerant ............................................................................................................................... 60
7-5. Brazing of Pipes ............................................................................................................................................... 61
8. CONTROL BLOCK DIAGRAM .......................................................................................................... 63
8-1. Indoor Control Circuit ...................................................................................................................................... 63
8-2. Control Specifications ..................................................................................................................................... 65
8-3. Indoor Print Circuit Board................................................................................................................................ 65
9. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS ................................................... 87
9-1. Microcomputer System Block Diagram.......................................................................................................... 87
9-2. Indoor Control Circuit ...................................................................................................................................... 95
9-3. Outdoor Controls.............................................................................................................................................. 98
10. TROUBLESHOOTING ..................................................................................................................... 117
10-1. Summary ofTroubleshooting ........................................................................................................................ 117
10-2. Check Code List ............................................................................................................................................. 119
10-3. Error Mode Detected by LED on Outdoor P.C. Board.................................................................................. 122
10-4. Troubleshooting Procedure for Each Check Code...................................................................................... 125
11. REPLACEMENT OF SERVICE INDOOR P.C. BOARD .................................................................. 146
12. SETUP AT LOCAL SITE AND OTHERS ......................................................................................... 150
12-1. Indoor Unit ...................................................................................................................................................... 150
12-2. Network Adapter ............................................................................................................................................. 159
12-3. How to Set an Address Number.................................................................................................................... 161
12-4. Display and Operation of Main Remote Controller and Central Control Remote Controller .................. 163
13. ADDRESS SETUP ........................................................................................................................... 164
13-1. Address Setup ................................................................................................................................................ 164
13-2. Address Setup & Group Control ................................................................................................................... 165
13-3. Address Setup ................................................................................................................................................ 166
14. DETACHMENTS............................................................................................................................... 169
14-1. Indoor Unit ..................................................................................................................................................... 169
14-2. Outdoor Unit.................................................................................................................................................... 187
15. EXPLODED VIEWS AND PARTS LIST........................................................................................... 211
15-1. Indoor Unit ...................................................................................................................................................... 211
15-2. Outdoor Unit.................................................................................................................................................... 227
15-3. Replacement of Main Parts (Sold Separately) ............................................................................................. 237
16. CORD HEATER INSTALLATIONWORK......................................................................................... 239
APPENDIX-1
1. SDI combination, Indoor / Outdoor .........................................................................................................................1
2. Service parts for 4-way CassetteType....................................................................................................................1
3. Specification for Concealed DuctType ...................................................................................................................2
4. Service parts for Concealed DuctType ..................................................................................................................2
5. Service parts for Under CeilingType ......................................................................................................................3
6. Service PCB Replacement .......................................................................................................................................4
7. Indoor unit & Remote controller..............................................................................................................................5
8. Connecting cable for Remote controllers ..............................................................................................................5