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9. TROUBLESHOOTING CHART ..................................................................................... 32
9-1. What to be Prechecked First .................................................................................................. 32
9-1-1. Power Supply Voltage...........................................................................................................................32
9-1-2. Incorrect Cable Connection between Indoor and Outdoor Units .....................................................32
9-1-3. Misleading but Good Operations.........................................................................................................33
9-2. Primary Judgement of Trouble Sources ............................................................................... 34
9-2-1. Role of Indoor Unit Controller..............................................................................................................34
9-2-2. Display of Abnormalities and Judgement of the Abnormal Spots ...................................................34
9-3. Troubleshooting Flowcharts................................................................................................... 38
9-3-1. Power can not be Turned on ................................................................................................................38
9-3-2. Power can not be Turned on after Replacing Indoor PC Board .......................................................39
9-3-3. Outdoor Unit does not Operate ...........................................................................................................39
9-3-4. Only Compressor does not Operate ...................................................................................................40
9-3-5. Only Outdoor Fan does not Operate ...................................................................................................41
9-3-6. Only the Indoor Fan does not Operate................................................................................................42
9-4. How to Check the Remote Control (Including the Indoor PC Board) ................................ 43
9-4-1. How to Check the PC Board.................................................................................................................44
9-4-2. PC Board Layout ...................................................................................................................................46
9-4-3. How to Reduce the Operation Time of the Anti-Restart Timer .........................................................47
10. PART REPLACEMENT ................................................................................................. 48
10-1. Indoor Unit ................................................................................................................................ 48
10-2. Microcomputer ......................................................................................................................... 50
10-3. Outdoor Unit ............................................................................................................................. 51
11. CAUTIONS ON REPLACEMENT OF PC BOARD ASSEMBLY.................................... 52
12. EXPLODED VIEWS AND PARTS LIST........................................................................ 53
12-1. Indoor Unit (1)........................................................................................................................... 53
Indoor Unit (2)........................................................................................................................... 54
12-2. Outdoor Unit ............................................................................................................................. 55