2 
TABLE OF CONTENTS 
 
1.
  Safety Precautions ............................................. 3 
2.  Specification ....................................................... 5 
3.  Features ............................................................. 29 
4.  Location of Controls and Components .......... 30 
4.1  Indoor Unit .................................................. 30 
4.2  Outdoor Unit ............................................... 30 
4.3  Remote Control .......................................... 30 
5.  Dimensions ....................................................... 31 
5.1  Indoor Unit .................................................. 31 
5.2  Outdoor Unit ............................................... 33 
6.  Refrigeration Cycle Diagram ........................... 35 
6.1  CU-E7PKR ................................................. 35 
6.2  CU-E9PKR  CU-E12PKR ........................... 36 
6.3  CU-E15PKR  CU-E18PKR ......................... 37 
6.4  CU-E21PKR  CU-E24PKR ......................... 38 
6.5  CU-E28PKR ............................................... 39 
7.  Block Diagram .................................................. 40 
7.1  CU-E7PKR  CU-E9PKR  CU-E12PKR ....... 40 
7.2  CU-E15PKR  CU-E18PKR ......................... 41 
7.3  CU-E21PKR ............................................... 42 
7.4  CU-E24PKR ............................................... 43 
7.5  CU-E28PKR ............................................... 44 
8.  Wiring Connection Diagram ............................ 45 
8.1  Indoor Unit .................................................. 45 
8.2  Outdoor Unit ............................................... 47 
9.  Electronic Circuit Diagram .............................. 52 
9.1  Indoor Unit .................................................. 52 
9.2  Outdoor Unit ............................................... 54 
10.  Printed Circuit Board ....................................... 59 
10.1  Indoor Unit .................................................. 59 
10.2  Outdoor Unit ............................................... 62 
11.  Installation Instruction ..................................... 66 
11.1  Select the Best Location ............................. 66 
11.2  Indoor Unit .................................................. 67 
11.3  Outdoor Unit ............................................... 71 
12.  Installation Instruction ..................................... 74 
12.1  Select the Best Location ............................. 74 
12.2  Indoor Unit .................................................. 75 
12.3  Outdoor Unit ............................................... 79 
13.  Operation Control ............................................. 82 
13.1  Basic Function ............................................ 82 
13.2  Indoor Fan Motor Operation ....................... 83 
13.3  Outdoor Fan Motor Operation .................... 84 
13.4  Airflow Direction .......................................... 85 
13.5  Quiet operation (Cooling Mode/Cooling area 
of Dry Mode) ............................................... 86
 
13.6  Quiet operation (Heating) ........................... 86 
13.7  Powerful Mode Operation ........................... 87 
13.8  Timer Control .............................................. 87 
13.9  Auto Restart Control ...................................87 
13.10  Indication Panel ..........................................88 
13.11  nanoe-G Operation .....................................88 
13.12  Mild Dry Cooling Operation ........................90 
13.13  AUTO COMFORT and ECO NAVI 
Operation ....................................................90
 
13.14  HA Terminal (HAJEM-A) ............................99 
14.  Protection Control ......................................... 100 
14.1  Protection Control For All Operations ...... 100 
14.2  Protection Control For Cooling & Soft Dry 
Operation .................................................  102
 
14.3  Protection Control For Heating 
Operation .................................................  103
 
15.  Servicing Mode .............................................. 105 
15.1  Auto OFF/ON Button ............................... 105 
15.2  Remote Control Button ............................ 106 
16.  Troubleshooting Guide .................................  108 
16.1  Refrigeration cycle system ...................... 108 
16.2  Breakdown Self Diagnosis Function ........ 110 
16.3  Error Code Table .....................................  111 
16.4  Self-diagnosis Method ............................. 113 
17.  Disassembly and Assembly Instructions ... 142 
17.1  CS-E7PK  CS-E9PK  CS-E12PK 
CS-E15PK ............................................... 142
 
17.2  CS-E18PK  CS-E21PK  CS-E24PK 
CS-E28PK ............................................... 146
 
17.3  Outdoor Electronic Controller Removal 
Procedure ................................................ 150
 
18.  Technical Data ............................................... 153 
18.1  Operation Characteristics ........................ 153 
18.2  Sensible Capacity Chart .......................... 185 
19.  Exploded View and Replacement Parts 
List .................................................................. 189
 
19.1  Indoor Unit ...............................................  189 
19.2  Outdoor Unit ............................................ 193