2TABLE OF CONTENTS1. Safety Precautions .............................................32. Specification .......................................................53. Features.............................................................294. Location of Controls and Components ..........304.1 Indoor Unit ..................................................304.2 Outdoor Unit ...............................................304.3 Remote Control ..........................................305. Dimensions .......................................................315.1 Indoor Unit ..................................................315.2 Outdoor Unit ...............................................336. Refrigeration Cycle Diagram ...........................356.1 CU-E7PKR .................................................356.2 CU-E9PKR CU-E12PKR ...........................366.3 CU-E15PKR CU-E18PKR .........................376.4 CU-E21PKR CU-E24PKR .........................386.5 CU-E28PKR ...............................................397. Block Diagram ..................................................407.1 CU-E7PKR CU-E9PKR CU-E12PKR .......407.2 CU-E15PKR CU-E18PKR .........................417.3 CU-E21PKR ...............................................427.4 CU-E24PKR ...............................................437.5 CU-E28PKR ...............................................448. Wiring Connection Diagram ............................458.1 Indoor Unit ..................................................458.2 Outdoor Unit ...............................................479. Electronic Circuit Diagram ..............................529.1 Indoor Unit ..................................................529.2 Outdoor Unit ...............................................5410. Printed Circuit Board .......................................5910.1 Indoor Unit ..................................................5910.2 Outdoor Unit ...............................................6211. Installation Instruction .....................................6611.1 Select the Best Location .............................6611.2 Indoor Unit ..................................................6711.3 Outdoor Unit ...............................................7112. Installation Instruction .....................................7412.1 Select the Best Location .............................7412.2 Indoor Unit ..................................................7512.3 Outdoor Unit ...............................................7913. Operation Control .............................................8213.1 Basic Function ............................................8213.2 Indoor Fan Motor Operation .......................8313.3 Outdoor Fan Motor Operation ....................8413.4 Airflow Direction..........................................8513.5 Quiet operation (Cooling Mode/Cooling areaof Dry Mode) ...............................................8613.6 Quiet operation (Heating) ...........................8613.7 Powerful Mode Operation ...........................8713.8 Timer Control ..............................................8713.9 Auto Restart Control ...................................8713.10 Indication Panel ..........................................8813.11 nanoe-G Operation .....................................8813.12 Mild Dry Cooling Operation ........................9013.13 AUTO COMFORT and ECO NAVIOperation ....................................................9013.14 HA Terminal (HAJEM-A) ............................9914. Protection Control ......................................... 10014.1 Protection Control For All Operations...... 10014.2 Protection Control For Cooling & Soft DryOperation ................................................. 10214.3 Protection Control For HeatingOperation ................................................. 10315. Servicing Mode .............................................. 10515.1 Auto OFF/ON Button ............................... 10515.2 Remote Control Button ............................ 10616. Troubleshooting Guide ................................. 10816.1 Refrigeration cycle system ...................... 10816.2 Breakdown Self Diagnosis Function........ 11016.3 Error Code Table ..................................... 11116.4 Self-diagnosis Method ............................. 11317. Disassembly and Assembly Instructions ... 14217.1 CS-E7PK CS-E9PK CS-E12PKCS-E15PK ............................................... 14217.2 CS-E18PK CS-E21PK CS-E24PKCS-E28PK ............................................... 14617.3 Outdoor Electronic Controller RemovalProcedure ................................................ 15018. Technical Data ............................................... 15318.1 Operation Characteristics ........................ 15318.2 Sensible Capacity Chart .......................... 18519. Exploded View and Replacement PartsList .................................................................. 18919.1 Indoor Unit ............................................... 18919.2 Outdoor Unit ............................................ 193