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1. SPECIFICATIONS 1-1 Unit Specifications ... ... ... 1 1 -2 Major Component Specifications ... 3 (1) Indoor and Outdoor Units ... 3 (a) KS2422 (Indoor unit) (b) C2422 (Outdoor unit) (c) CL2422 (Outdoor unit) (d) KS3622 (Indoor unit) (e) C3622 (Outdoor unit) 1-3 Other Component Specifications ... 8 (1) Indoor Unit ... 8 (2) Outdoor Unit ... 9 2. PERFORMANCE CHARTS 2-1 Operating Current ... 11 2-2 High and Low Pressure ... 13 3. AIR THROW DISTANCE CHART ... 17 4. FUNCTION 4-1 Room Temperature Control ... 18 4-2 Freeze Prevention ... 19 4-3 Fan Speed Auto (Indoor Fan) ... 19 4-4 Outdoor Fan Speed Control /C2422 and C3622) ... 20 4-5 Outdoor Fan Speed Control (CL2422, ... 20 5. ELECTRICAL DATA • Schematic Diagram ... 21 • Electric Wiring Diagram (PCB Ass’y) ... 24 6. TROUBLESHOOTING 6-1 Check before and after troubleshooting ... 29 (1) Check power supply wiring ... 29 (2) Check inter-unit wiring ... 29 (3) Check power supply ... 29 (4) Check lead wires and connectors in indoor and outdoor units ... 29 (5) Reference ... 30 (a) Condition of general cooling operation (b) Condition of cooling operation under low ambient temperature 6-2 Air Conditioner does not operate ... 32 (1) Circuit breaker trips (or fuse blows) ... 32 (a) When circuit breaker is set to ON, it trips in a few moments (b) Circuit breaker trips in several minutes after turning Air Conditioner ON (2) Neither indoor unit nor outdoor unit runs ... 34 (a) Power is not supplied (b) Check remote control unit (c) Check OPERATION selector switch in indoor unit (d) Check transformer in indoor unit (e) Check fuse on PCB Ass’y in indoor unit (f) Check high pressure switch (63PH) /C3622 only) (3) Only outdoor unit does not run ... 37 (a) Check COOL/FAN selector switch of remote control unit (b) Outdoor unit does not run when Air Conditioner is in following conditions (c) Check electro-magnetic connector (d) Check PCB Ass’y 6-3 A particular component of Air Conditioner does not operate ... 40 (1) Only indoor fan does not run ... 40 (2) Only outdoor fan does not run ... 40 (3) Only outdoor fan does not run for CL2422 ... 41 (4) Only compressor does not run ... 42 6-4 Air Conditioner operates, but abnormalities occur ... 43 (1) Poor Cooling ... 43 (2) Excessive Cooling ... 44 6-5 Indoor (heat exchanger) coil temperature sensor (ΤΗ 1) is defective ... 44 (1) Open ... 44 (2) Shortage ... 44 7. CHECKING ELECTRICAL COMPONENTS 7-1 Measurement of Insulation Resistance ... 45 (1) Power Supply Wires ... 45 (2) Indoor Unit ... 45 (3) Outdoor Unit ... 45 (4) Measurement of Insulation Resistance for Electrical Parts ... 45 7-2 Checking Continuity of Fuse on PCB Ass’y ... 46 7-3 Checking Motor Capacitor ... 46 7-4 Appearance of Electrical Parts ... 47 (1) Elcctro-Magnctic Contactor ... 47 (2) Auxiliary Relay ... 47 (3) Thermostat ... 47 (4) Electro-Magnetic Contactor ... 47 (5) SSR (solid state relay) ... 48 (6) Thermostat ... 48 (7) Thermistor (PTC) ... 48 (8) High Pressure Switch ... 48