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CONTENTS
PRECAUTION FOR SAFETY ................................................................................................. 6
REFRIGERANT R410A ........................................................................................................ 11
1. SPECIFICATIONS ............................................................................................................. 13
1-1. Outdoor Unit .................................................................................................................................... 13
1-2. Operation Characteristic Curve .................................................................................................... 14
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) .............................................................. 15
3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM ...................................................... 17
4. WIRING DIAGRAM ........................................................................................................... 18
5. SPECIFICATIONS OF ELECTRICAL PARTS .................................................................. 19
6. REFRIGERANT R410A .................................................................................................... 20
6-1. Safety During Installation/Servicing ............................................................................................. 20
6-2. Refrigerant Piping Installation....................................................................................................... 20
6-3. Tools ................................................................................................................................................. 24
6-4. Recharging of Refrigerant ............................................................................................................. 24
6-5. Brazing of Pipes .............................................................................................................................. 25
6-6. Instructions for Re-use Piping of R22 or R407C.......................................................................... 27
7.CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS .................................... 31
7-1. Outdoor Unit Control ...................................................................................................................... 31
7-2. Outline of Main Controls ................................................................................................................ 32
8. TROUBLESHOOTING....................................................................................................... 37
8-1. Summary of Troubleshooting ........................................................................................................ 37
8-2. Troubleshooting .............................................................................................................................. 39
9. SETUP AT LOCAL SITE AND OTHERS .......................................................................... 61
9-1. Calling of Error History .................................................................................................................. 61
9-2. Group Control Operation ............................................................................................................... 61
9-3. Outdoor Unit .................................................................................................................................... 63
9-4. Service Support Function (LED Display, Switch Operation) ...................................................... 64
9-5. Others .............................................................................................................................................. 65
10. ADDRESS SETUP .......................................................................................................... 70
10-1. Address Setup Procedure ........................................................................................................... 70
10-2. Address Setup & Group Control ................................................................................................. 71
10-3. Remote Controller Wiring ............................................................................................................ 74
10-4. Address Setup (Manual setting from remote controller) .......................................................... 75
10-5. Confirmation of Indoor Unit No. Position ................................................................................... 76
11. REPLACEMENT OF SERVICE P.C. BOARD ................................................................. 78
11-1. Outdoor Unit ................................................................................................................................. 78
12. HOW TO EXCHANGE COMPRESSOR .......................................................................... 79
12-1. Exchanging Procedure of Compressor (Outline) ...................................................................... 79
13. INSTALLATION MANUAL .............................................................................................. 80
14. DETACHMENTS ............................................................................................................. 92
15. EXPLODED VIEWS AND PARTS LIST ........................................................................ 100
