Toshiba RAS-10SK-E x2 Service Manual page 3

9. TROUBLESHOOTING CHART...................................................................................... 33
9-1. What to be Prechecked First .................................................................................................. 33
9-1-1. Power Supply Voltage ........................................................................................................................... 33
9-1-2. Incorrect Cable Connection between Indoor and Outdoor Units ..................................................... 33
9-1-3. Misleading but Good Operations .........................................................................................................34
9-2. Primary Judgement of Trouble Sources ............................................................................... 35
9-2-1. Role of Indoor Unit Controller .............................................................................................................. 35
9-2-2. Display of Abnormalities and Judgement of the Abnormal Spots ................................................... 35
9-3. Troubleshooting Flowcharts ................................................................................................... 39
9-3-1. Power can not be Turned on ................................................................................................................39
9-3-2. Power can not be Turned on after Replacing Indoor PC Board ....................................................... 40
9-3-3. Outdoor Unit does not Operate ...........................................................................................................40
9-3-4. Only Compressor does not Operate ................................................................................................... 41
9-3-5. Only Outdoor Fan does not Operate ................................................................................................... 42
9-3-6. Only the Indoor Fan does not Operate ................................................................................................ 43
9-4. How to Check the Remote Control (Including the Indoor PC Board) ................................ 44
9-4-1. How to Check the PC Board ................................................................................................................. 45
9-4-2. PC Board Layout ...................................................................................................................................47
9-4-3. How to Reduce the Operation Time of the Anti-Restart Timer .........................................................48
10. PART REPLACEMENT ................................................................................................. 49
10-1. Indoor Unit (RAS-10SK-E, RAS-10SKX) ................................................................................ 49
10-2. Microcomputer (RAS-10SK-E, RAS-10SKX) ......................................................................... 51
10-3. Outdoor Unit (RAS-M18SA-E, RAS-M18SAX) ....................................................................... 52
11. CAUTIONS ON REPLACEMENT OF PC BOARD ASSEMBLY .................................... 54
12. EXPLODED VIEWS AND PARTS LIST ........................................................................ 55
12-1. Indoor Unit (1) ........................................................................................................................... 55
Indoor Unit (2) ........................................................................................................................... 56
12-2. Outdoor Unit ............................................................................................................................. 57
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