– 2 –
NOTE
A direct current motor is adopted for indoor fan motor in the Compact Slim Duct Type air conditioner.
Caused from its characteristics, a current limit works on the direct current motor. When replacing the
high-performance filter or when opening the service board, be sure to stop the fan. If an above action is
executed during the fan operation, the protective control works to stop the unit operation, and the check
code “P12” may be issued. However it is not a trouble. When the desired operation has finished, be sure to
reset the system to clear “P12” error code using the leak breaker of the indoor unit. Then push the opera-
tion stop button of the remote controller to return to the usual operation.
CONTENTS
Original instruction .......................................................................................... 4
Warning Indications on the Air Conditioner Unit .......................................... 6
Precaution for Safety ....................................................................................... 7
1. AIR DUCTING WORK .............................................................................. 17
1-1. Static Pressure Characteristics....................................................................... 17
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ...................................... 18
3. WIRING DIAGRAM................................................................................... 19
4. SPECIFICATIONS OF ELECTRICAL PARTS .......................................... 20
5. CONTROL BLOCK DIAGRAM................................................................. 21
5-1. Indoor Controller Block Diagram .................................................................... 21
5-2. Control Specifications ...................................................................................... 22
5-3. Indoor Print Circuit Board ................................................................................ 32
6. TROUBLESHOOTING .............................................................................. 34
6-1. Summary of Troubleshooting .......................................................................... 34
6-2. Check Code List (Indoor) ................................................................................. 38
6-3. Diagnostic Procedure for Each Check Code (Indoor Unit) ........................... 43
7. REPLACEMENT OF SERVICE P.C. BOARD ........................................... 54
7-1. Indoort Unit ....................................................................................................... 54
8. SETUP AT LOCAL SITE AND OTHERS .................................................. 58
8-1. Indoor Unit......................................................................................................... 58
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