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CONTENTS
PRECAUTIONS FOR SAFETY ................................................................................ 6
1. SPECIFICATIONS .................................................................................................. 13
2. AIR DUCTING WORK............................................................................................. 15
3. CONSTRUCTION VIEWS (EXTERNAL VIEWS).................................................... 17
4. WIRING DIAGRAMS............................................................................................... 19
5. PARTS RATING...................................................................................................... 20
6. REFRIGERANT CYCLE DIAGRAM ....................................................................... 21
7. CONTROL OUTLINE.............................................................................................. 22
8. APPLIED CONTROL AND FUNCTIONS
(INCLUDING CIRCUIT CONFIGURATION) .......................................................... 28
8-1. Indoor controller block diagram ........................................................................................ 28
8-1-1. In Case of Connection of Wired (Simple) Remote Controller ............................. 28
8-1-2. In Case of Connection of Wireless Remote Controller ....................................... 29
8-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote
Controller ................................................................................................................ 30
8-2. Indoor Print Circuit Board MCC-1631 ...............
................................................................ 31
8-3.
Optional connector specifications of indoor P.C. board................................................. 32
8-4. Test operation of indoor unit .............................................................................................33
8-5. Method to set indoor unit function DN code .................................................................... 34
8-6. Applied control of indoor unit ........................................................................................... 37
9. TROUBLESHOOTING............................................................................................ 53
9-1. Overview .............................................................................................................................. 53
9-2. Troubleshooting method ....................................................................................................54
9-3. Troubleshooting based on information displayed on remote controller ....................... 60
9-4. Check codes displayed on remote controller and SMMS outdoor unit
(7-segment display on I/F board) and locations to be checked .................................... 65
9-5. Sensor characteristics ....................................................................................................... 84
10. P.C. BOARD EXCHANGE PROCEDURES.......................................................... 85
10-1. Replacement of indoor P.C. boards................................................................................. 85
11. DETACHMENTS................................................................................................... 91
12. EXPLODED VIEWS AND PARTS LIST ............................................................... 98
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