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CONTENTS
1. SPECIFICATIONS .......................................................................................................................... 3
2. CONSTRUCTION VIEWS .............................................................................................................. 5
2-1. Indoor Unit ........................................................................................................................................ 5
2-2. Outdoor Unit ..................................................................................................................................... 6
3. WIRING DIAGRAM ........................................................................................................................ 8
4. SPECIFICATIONS OF ELECTRICAL PARTS ...............................................................................9
5. REFRIGERANT CYCLE DIAGRAM............................................................................................. 11
6. MICRO-COMPUTER BLOCK DIAGRAM .................................................................................... 13
7. OPERATION DESCRIPTIONS..................................................................................................... 14
7-1. FAN ONLY Operation ...................................................................................................................... 14
7-2. COOL Operation ............................................................................................................................. 14
7-3. DRY Operation ................................................................................................................................ 15
7-4. HEAT Operation .............................................................................................................................. 16
7-5. AUTO Operation ............................................................................................................................. 17
7-6. ECONO. Mode ................................................................................................................................. 18
7-7. Current Limit Control ..................................................................................................................... 18
7-8. High-Temperature Limit Control (Heating Operation) ................................................................. 19
7-9. Low-Temperature Limit Control (Cooling Operation) .................................................................. 19
7-10. Cool Airflow Prevention Control (Heating Operation) ................................................................. 19
7-11. Defrost Operation........................................................................................................................... 20
7-12. Auto Restart Function.................................................................................................................... 21
8. INSTALLATION PROCEDURE .................................................................................................... 23
8-1. Safety Cautions .............................................................................................................................. 23
8-2. Installation Diagram of Indoor and Outdoor Units ...................................................................... 25
8-3. Installation ...................................................................................................................................... 26
8-4. Indoor Unit ...................................................................................................................................... 28
8-5. Outdoor Unit ................................................................................................................................... 34
8-6. Others.............................................................................................................................................. 37
9. TROUBLESHOOTING CHART.................................................................................................... 38
9-1. What to be Prechecked First ......................................................................................................... 38
9-2. Primary Judgement of Trouble Sources ....................................................................................... 40
9-3. Troubleshooting Flowcharts.......................................................................................................... 44
9-4. How to Check the Remote Control (Including the Indoor P.C. Board)........................................ 50
10. PART REPLACEMENT ................................................................................................................ 55
10-1. Indoor Unit ...................................................................................................................................... 55
10-2. Microcomputer ............................................................................................................................... 57
10-3. Outdoor Unit ................................................................................................................................... 58
11. CAUTIONS ON REPLACEMENT OF P.C. BOARD ASSEMBLY ................................................59
12. EXPLODED VIEWS AND PARTS LIST .......................................................................................61
12-1. Indoor Unit (1)................................................................................................................................. 61
Indoor Unit (2)................................................................................................................................. 63
Indoor Unit (3)................................................................................................................................. 65
12-2. Outdoor Unit ................................................................................................................................... 66
• This air conditioner is charged with HFC (R-410A)
that doesn't deplete the Ozone layer.
• This air conditioner requires special service tools
for the refrigerant R-410A.
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