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CONTENTS
Precaution for Safety ............................................................................................................ 6
New Refrigerant (R410A) .................................................................................................... 11
1. SPECIFICATIONS ........................................................................................................ 13
1-1. Outdoor Unit ............................................................................................................................... 13
1-2. Characteristic Curve ................................................................................................................. 14
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) .......................................................... 15
3. REFRIGERATING CYCLE DIAGRAM ......................................................................... 17
4. WIRING DIAGRAM ...................................................................................................... 19
5. SPECIFICATIONS OF ELECTRICAL PARTS .............................................................. 20
6. REFRIGERANT R410A ................................................................................................ 21
6-1. Safety During Installation/Servicing ........................................................................................21
6-2. Refrigerant Piping Installation ............................................................................................... 21
6-3. Tools ............................................................................................................................................ 25
6-4. Recharging of Refrigerant ........................................................................................................ 25
6-5. Brazing of Pipes ......................................................................................................................... 26
6-6. Instructions for Re-use Piping of R22 or R407C .................................................................... 28
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...................................................................... 63
9-1. Calling of Error History ............................................................................................................. 63
9-2. Group Control Operation .......................................................................................................... 63
9-3. Outdoor Unit ............................................................................................................................... 65
9-4. Applicable Control of Outdoor Unit ......................................................................................... 72
10. ADDRESS SETUP ....................................................................................................... 73
10-1. Address Setup Procedure ......................................................................................................... 73
10-2. Address Setup & Group Control ..............................................................................................74
10-3. Remote Controller Wiring.......................................................................................................... 77
10-4. Address Setup (Manual setting from remote controller) ....................................................... 77
10-5. Confirmation of Indoor Unit No. Position ................................................................................ 78
11. REPLACEMENT OF THE SERVICE P.C. BOARD MCC-1630 ..................................... 80
12. HOW TO EXCHANGE COMPRESSOR........................................................................ 81
12-1. Exchanging Procedure of Compressor (Outline) ................................................................... 81
12-2. Exchange of Compressor ......................................................................................................... 81
13. DETACHMENTS ........................................................................................................... 82
14. EXPLODED VIEWS AND PARTS LIST........................................................................ 90