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Order No. MAC0308013C2
Room Air Conditioner
CS-E18CKE CU-E18CKE
CS-E21CKE CU-E21CKE
CONTENTS
Page Page
1 Features 2 10.4. INSTALLATION, TRANSFERRING, SERVICING 59
2 Functions 3 11 Installation Instructions 63
3 ProductSpecifications 6 11.1. Safety Precautions 63
4 Dimensions 10 11.2. INDOOR UNIT 66
5 RefrigerationCycleDiagram 12 11.3. OUTDOOR UNIT 69
6 BlockDiagram 13 12 Servicing Information 72
7 WiringDiagram 14 12.1. Troubleshooting 72
8 OperationDetails 15 12.2. Breakdown Self Diagn
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15 Replacement Parts List 85 18.2. PRINT PATTERNINDOOR UNIT PRINTED CIRCUIT 16 Exploded View 86 BOARD 99 17 Replacement Parts List 87 18.3. PRINT PATTERNOUTDOOR UNIT PRINTED CIRCUIT 18 Electronic Circuit Diagram 88 BOARD VIEW 100 18.1. REMOTE CONTROL 98 1 Features • Product • Serviceability − Microcomputer-controlled compressor operating − Washable Front Panel frequency − Breakdown Self Diagnosis function − Vertical and Horizontal Airflow Directions − Five modes of operation selection
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2 Functions Remote Control Illuminable buttons OFF/ON I FAN SPEED Operation OFF / ON Indoor Fan Speed Selection • Low • Medium- MODE • Medium Operation Mode Selection • Medium+ • High • a Automatic Operation • AUTO Automatic Fan Speed • HEAT Heating Operation FAN • COOL Cooling Operation TEMP • DRY Soft Dry Operation Room Temperature Setting • FAN Fan Operation • Increase or decrease set temperature. (16°C to 30°C) TIMER POWERFUL ON Powerful Mode Operation OFF Timer Setting • 24-hour, OFF / ON R
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Indoor Unit Five Operation Modes Automatic Operation Switch • Press for < 5s to run Automatic Operation. • Automatic, Heating, Cooling, Soft Dry (Used when the remote control cannot be used.) and Fan Operation. • Press continuously for 5s and < 8s to run Forced Cooling Operation. Automatic and 5 Manual Indoor • Press continuously for 8s and < 11s to Fan Speeds run Forced Heating Operation. • Press continuously for 11s and < 16s to Automatic and 5 Manual Vertical change different remote controlli
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Outdoor Unit Breakdown Self Diagnosis Time Delay Safety Control Function 30 seconds Forced Operation Low Pressure Control (Gas Leakeage Detection) Overload Protection Control Indoor Power Relay Control Total Running Current Control Compressor Overheating Anti-Dew Formation Control Prevention Control Anti Freezing Control IPM (Power Transistor) Overheating Protection Control Anti-Cold Draft Control Low Operation Frequency Protection Control Hot Start Mininum Operation Frequency Intake Air Tempera
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3 ProductSpecifications Unit CS-E18CKE CU-E18CKE Cooling Capacity kW 5.30 (0.90 - 6.00) kcal/h 4,560 (770 - 5,160) BTU/h 18,100 (3,070 - 20,500) Heating Capacity kW 6.60 (0.90 - 8.00) kcal/h 5,680 (770 - 6,880) BTU/h 22,500 (3,070 - 27,300) Moisture Removal l/h 2.9 Pint/h (6.1) Power Source Phase Single V 230 Cycle 50 Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE 3 Air Volume Indoor Air (Lo) m /min (cfm) Cooling; 12.5 (440) — Heating; 13.9 (490) 3 Indoor Air (Me) m /min (cfm) Cooling; 14.0 (49
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Unit CS-E18CKE CU-E18CKE Pipe Size inch G (gas side) ; 1/2” G (gas side) ; 1/2” (Flare piping) inch L (liquid side) ; 1/4” L (liquid side) ; 1/4” Drain Inner diameter mm 12 — Hose Length m 0.65 — Power Cord Length 2.1 m — 2 Number of core-wire 3 core wires × 1.5 mm — Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750) Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875) Depth inch (mm) 8 - 9/32 (210) 13 - 19/32 (345) Net Weight lb (kg) 24 (11) 108 (49) Compressor Type — Involute scroll Moto
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Unit CS-E21CKE CU-E21CKE Cooling Capacity kW 6.30 (0.90 - 7.10) kcal/h 5,420 (770 - 6,110) BTU/h 21,500 (3,070 - 24,200) Heating Capacity kW 7.20 (0.90 - 8.50) kcal/h 6,190 (770 - 7,310) BTU/h 24,600 (3,070 - 29,000) Moisture Removal l/h 3.5 Pint/h (7.4) Power Source Phase Single V 230 Cycle 50 Airflow Method OUTLET SIDE VIEW TOP VIEW INTAKE 3 Air Volume Indoor Air (Lo) m /min (cfm) Cooling; 12.6 (440) — Heating; 14.0 (490) 3 Indoor Air (Me) m /min (cfm) Cooling; 14.5 (510) — Heating; 15.8 (560)
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Unit CS-E21CKE CU-E21CKE Drain Inner diameter mm 12 — Hose Length m 0.65 — Power Cord Length 2.1 m — 2 Number of core-wire 3 core wires × 1.5 mm — Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750) Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875) Depth inch (mm) 8 - 9/32 (210) 13 - 19/32 (345) Net Weight lb (kg) 24 (11) 112 (51) Compressor Type — Involute scroll Motor Type — Brushless (4-pole) Rated Output W — 900 Air Circulation Type Cross-flow Fan Propeller Fan Material ASHT-18 P.P M
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4 Dimensions 10
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11
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5 RefrigerationCycleDiagram 12
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6 BlockDiagram 13
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7 WiringDiagram 14
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8 OperationDetails 8.1. BASICFUNCTION Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by the microcomputer
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Table (b): Outdoor Air Temperature Shifting Mode: Outdoor Temperature, X (°C): Temperature Shift (°C) Manual Operation Auto Operation Cooling/Soft Dry 38 X 1.50 2.00 30 X 38 1.25 1.25 23 X 30 1.25 1.25 X 23 1.75 1.75 Heating 21 X -2.25 -1.50 17 X 21 -1.75 -1.00 13 X 17 -0.75 0.00 9 X 13 0.25 0.25 5 X 9 1.25 1.00 1 X 5 0.75 1.00 -3 X 1 1.50 1.00 X -3 1.50 1.00 Table (c): Powerful Mode Shifting Mode: Period, X (min): Temperature Shift (°C) Cooling X 20 -2.0 X 20 0.0 Soft Dry X 20 -1.0 X 20 0.0 Hea
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8.1.2. CompressorOperationFrequency Intake Air Temperature - Internal Setting Temperature (°C) Freq. H Zone Cooling & Soft Dry Heating Cooling Soft Dry Heating Remark 1 -2.0 1.5 1 1 1 2 -1.5 1.0 1 1 1 3 -1.0 0.5 14 8 11 4 -0.5 0.0 20 8 15 5 0.0 -0.5 27 8 22 6 0.5 -1.0 35 11 27 7 1.0 -1.5 43 11 36 8 1.5 -2.0 46 11 39 Fc, Fh 9 2.0 -2.5 46 11 39 Fc, Fh 10 2.5 -3.0 46 11 39 Fc, Fh 11 Nil -3.5 Nil Nil 39 Fh 12 Nil -4.0 Nil Nil 39 Fh Operating Frequency Calculation Formula: CompHz = Freq. A × Freq. H
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8.1.4. SoftDryOperation 8.1.4.1. Thermostatcontrol • Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.5°C. • Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point. 8.1.5. HeatingOperation 8.1.5.1. Thermostatcontrol • Compressor is OFF when Intake Air Temperature - Internal Setting > +1.5°C. • Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Settin
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Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the adjustment of T1, T2 and T3 values, the operation mode for that particular environment and remote control setting is judged and performed, based on the above operation mode chart, every 30 minutes. Remote Control Setting Temperature (°C) T1 T2 T3 16 ~ 18 +10 +8 -5 19 ~ 22 +8 +7 -7 23 ~ 26 +7 +6 -7 27 ~ 30 +6 +5 -8 There is a temperature shifting on T1, T2, and T3 if the operation mode judged
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B. Indoor Fan Control i. Indoor fan control operation outline 1. Cooling / Dry 2. Heating 20
