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7. REFRIGERANT R410A .............................................................................. 51
7-1. Safety During Installation/Servicing ............................................................... 51
7-2. Refrigerant Piping Installation ....................................................................... 51
7-3. Tools .................................................................................................................. 55
7-4. Recharging of Refrigerant................................................................................ 55
7-5. Brazing of Pipes ................................................................................................ 56
7-6. Instructions for Re-use Piping of R22 or R407C ............................................ 58
8. CONTROL BLOCK DIAGRAM ................................................................... 61
8-1. Indoor Control Circuit ....................................................................................... 61
8-2. Control Specifications ...................................................................................... 62
8-3. Indoor Print Circuit Board ................................................................................ 70
9. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS ............. 71
9-1. Indoor Control Circuit ....................................................................................... 71
9-2. Outdoor Controls .............................................................................................. 71
10. TROUBLESHOOTING ............................................................................... 80
10-1. Summary of Troubleshooting ........................................................................... 80
10-2. Check Code List ................................................................................................ 82
10-3. Error Mode Detected by LED on Outdoor P.C. Board .................................... 85
10-4. Troubleshooting Procedure for Each Check Code ......................................... 86
11. REPLACEMENT OF SERVICE INDOOR P.C. BOARD .......................... 102
12. SETUP AT LOCAL SITE AND OTHERS ................................................ 106
12-1. Indoor Unit....................................................................................................... 106
12-2. Setup at Local Site / Others ........................................................................... 113
12-3. How to set up central control address number ............................................ 115
13. ADDRESS SETUP .................................................................................. 116
13-1. Address Setup ................................................................................................ 116
13-2. Address Setup & Group Control .................................................................... 117
13-3. Address Setup ................................................................................................ 118
14. DETACHMENTS..................................................................................... 120
14-1. Indoor Unit...................................................................................................... 120
14-2. Outdoor Unit.................................................................................................... 134
15. EXPLODED VIEWS AND PARTS LIST ................................................. 159
15-1. Indoor Unit....................................................................................................... 159
15-2. Outdoor Unit.................................................................................................... 173
15-3. Replacement of Main Parts (Sold Separately) .............................................. 181
16. CORD HEATER INSTALLATION WORK ................................................ 183
16-1. Required parts for installation work (Recommendation) ............................ 183
16-2. Base Plate ....................................................................................................... 192
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