Toshiba RAS-10SKH-E Service Manual page 3

8-4. Indoor Unit ................................................................................................................................ 26
8-4-1. Cutting a Hole and Mounting Installation Plate .................................................................................26
8-4-2. Electrical Work ...................................................................................................................................... 27
8-4-3. Wiring Connection ................................................................................................................................ 28
8-4-4. Piping and Drain Hose Installation ...................................................................................................... 30
8-4-5. Indoor Unit Installation ......................................................................................................................... 31
8-4-6. Drainage ................................................................................................................................................. 31
8-5. Outdoor Unit ............................................................................................................................. 32
8-5-1. Refrigerant Piping Connection ............................................................................................................ 33
8-5-2. Vacuum Pumping .................................................................................................................................. 33
8-5-3. Wiring Connection ................................................................................................................................ 34
8-6. Others ........................................................................................................................................ 35
8-6-1. Gas Leak Test ........................................................................................................................................35
8-6-2. Test Operation ....................................................................................................................................... 35
8-6-3. Auto Restart Setting ............................................................................................................................. 35
9. TROUBLESHOOTING CHART...................................................................................... 36
9-1. What to be Prechecked First .................................................................................................. 36
9-1-1. Power Supply Voltage ........................................................................................................................... 36
9-1-2. Incorrect Cable Connection between Indoor and Outdoor Units ..................................................... 36
9-1-3. Misleading but Good Operations .........................................................................................................37
9-2. Primary Judgement of Trouble Sources ............................................................................... 38
9-2-1. Role of Indoor Unit Controller .............................................................................................................. 38
9-2-2. Display of Abnormalities and Judgement of the Abnormal Spots ................................................... 38
9-3. Troubleshooting Flowcharts ................................................................................................... 42
9-3-1. Power can not be Turned on ................................................................................................................42
9-3-2. Power can not be Turned on after Replacing Indoor PC Board ....................................................... 43
9-3-3. Outdoor Unit does not Operate ...........................................................................................................43
9-3-4. Only Compressor does not Operate ................................................................................................... 44
9-3-5. Only Outdoor Fan does not Operate ................................................................................................... 45
9-3-6. Only 4-Way Valve does not Operate ....................................................................................................46
9-3-7. Only the Indoor Fan does not Operate ................................................................................................ 47
9-4. How to Check the Remote Control (Including the Indoor PC Board) ................................ 48
9-4-1. How to Check the PC Board ................................................................................................................. 49
9-4-2. PC Board Layout ...................................................................................................................................51
9-4-3. How to Reduce the Operation Time of the Anti-Restart Timer .........................................................52
10. PART REPLACEMENT ................................................................................................. 53
10-1. Indoor Unit ................................................................................................................................ 53
10-2. Microcomputer ......................................................................................................................... 55
10-3. Outdoor Unit ............................................................................................................................. 56
11. CAUTIONS ON REPLACEMENT OF PC BOARD ASSEMBLY .................................... 57
12. EXPLODED VIEWS AND PARTS LIST ......................................................................... 58
12-1. Indoor Unit (1) ........................................................................................................................... 58
Indoor Unit (2) ........................................................................................................................... 59
Indoor Unit (3) ........................................................................................................................... 60
12-2. Outdoor Unit ............................................................................................................................. 61
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