143 Features• Inverter Technology- Wider output power range- Energy saving- Quick Cooling- More precise temperature control• E-ion Air Purifying System with Patrol Sensor- Active e-ions are released to catch dust particles and bring them back the large positively charged filter• Environment Protection- Non-ozone depletion substances refrigerant (R410A)• Long Installation Piping- Long piping up to 20 meter• Easy to use remote control• Quality Improvement- Random auto restart after power failure for safety restart operation- Gas leakage protection- Prevent compressor reverse cycle- Inner protector to protect compressor- Noise prevention during soft dry operation• Operation Improvement- Quiet mode to reduce the indoor unit operating sound- Powerful mode to reach the desired room temperature quickly- 24-hour timer setting• Serviceability Improvement- Breakdown Self Diagnosis function• Multi split Combination Possibility- A single outdoor unit enables air conditioning of up to two separate rooms for CU-2E15GBE, CU-2E18CBPG.- A single outdoor unit enables air conditioning of up to three separate rooms for CU-3E18EBE, CU-3E23CBPG.- A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E27CBPG.Outdoor UnitCU-2E15GBE CU-2E18CBPG CU-3E18EBE CU-3E23CBPG CU-4E27CBPGA B A B A B C A B C A B C DWALL2.2 kW CS-E7HKEWCS-E7HKDW2.8 kW CS-E9HKEWCS-E9HKDW3.2 kW CS-E12HKEWCS-E12HKDW4.0 kW CS-E15HKEWCS-E15HKDW— — — —5.0 kW CS-E18HKEWCS-E18HKDW— — — —