Page 2 - Important; CAUTION
– 2 – SM830079 Please Read Before Starting This air conditioning system meets strict safety and operatingstandards. As the installer or service person, it is an importantpart of your job to install or service the system so it operatessafely and efficiently. For safe installation and trouble-free ope...
Page 3 - Table of Contents
– 3 – SM830079 Table of Contents 1. OPERATING RANGE ....................................................................................... 5 2. SPECIFICATIONS ............................................................................................ 6 (1) Unit Specifications ........................
Page 4 - diagnostic chapter to help you find the; HOW TO USE THIS MANUAL; You can use this manual both as a
– 4 – SM830079 Introduction: Read Me First! This manual will help you understand and service the air conditioner. To help you find the information you need,we have divided it into 5 main sections. Each section is divided into chapters with charts, tables and explana-tions to help you find and repair...
Page 6 - Unit Specifications
– 6 – SM830079 (1) Unit Specifications 2. SPECIFICATIONS MODEL No. Indoor Unit XS1852 Outdoor Unit C1852 , CL1852 POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz PERFORMANCE Cooling Capacity BTU / h 18,000 17,500 kW 5.27 5.13 Air circulation (Hi) cu.ft. / min. 540 510 Moisture removal (High) Pints / h 5....
Page 14 - PERFORMANCE CHARTS; Operating Current
– 14 – SM830079 4. PERFORMANCE CHARTS (1) Operating Current 1 1 1 1 1 Indoor Unit: XS1852 Outdoor Unit: C1852, CL1852 Operating current characteristics versus outdoor ambient temperature and indoor temperature.(Indoor relative humidity: 50%, Indoor fan speed: High) 230V 230V / 208V Outdoor inlet air...
Page 15 - AIR THROW DISTANCE CHART
– 15 – SM830079 5. AIR THROW DISTANCE CHART MODEL: XS1852 HORIZONTAL DISTANCE (ft.) AXIS AIR VELOCITY (ft./sec.) VER TICAL DIST ANCE (ft.) AXIS AIR VELOCITY FAN SPEED COOLING ROOM AIR TEMP. LOUVER ANGLE HIGH 80˚F 30˚ 1052_X_S 0 3 7 10 13 17 20 0 3 7 10 13
Page 16 - REFRIGERANT FLOW DIAGRAM; Outdoor Unit; Insulation of Refrigerant Tubing
– 16 – SM830079 6. REFRIGERANT FLOW DIAGRAM Indoor Unit: XS1852 Outdoor Unit: C1852, CL1852 Evaporator Condenser Compressor Accumulator Outdoor Unit Indoor Unit Wide tube service valve Wide tube 1898_C_I Narrow tube service valve Narrow tube O. D.5/8"(15.88 mm) O. D.1/4"(6.35 mm) Capillary t...
Page 17 - INSTALLATION INSTRUCTIONS; Tubing Length; • Refrigerant tubing between the indoor and; Table 1; Models
– 17 – SM830079 7. INSTALLATION INSTRUCTIONS 1) Tubing Length • Refrigerant tubing between the indoor and outdoor units should be kept as short aspossible. • Select and decide the installation location so that the length of the refrigerant tubingwill be within the limits given in Table 1. Fig. 1 Tab...
Page 18 - Selecting the Installation Site; places where large amount of oil mist exist.; Indoor Unit; NOTE
– 18 – SM830079 7. INSTALLATION INSTRUCTIONS 2) Selecting the Installation Site AVOID: ã areas where leakage of flammable gas maybe expected. ã places where large amount of oil mist exist. ã direct sunlight. ã locations near heat sources which mayaffect performance of the unit. ã locations where ext...
Page 19 - choose a place as cool as possible.
– 19 – SM830079 7. INSTALLATION INSTRUCTIONS Out-doorunit Heat source Hot air Exhaust fan 1817_C_I NO Fig. 3 Min. 7 ft. (2 m) Min. 7 ft. (2 m) Min. 6 in. (15 cm)Air intake Ground Obstacle Obstacle above Air discharge 1819_M_I Air intake Min. 6" (15 cm) Air discharge Min. 6" (15 cm) Min. 12&#...
Page 20 - Electrical Wiring; (4) Each wiring connection must be done in
– 20 – SM830079 7. INSTALLATION INSTRUCTIONS 4) Electrical Wiring General Precautions on Wiring(1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate,then carry out the wiring closely followingthe wiring diagram. (2) Provide a power outlet to be used exclu- sively for eac...
Page 21 - Wiring; Wiring System Diagram; (1) Ground the unit in accordance with local
– 21 – SM830079 7. INSTALLATION INSTRUCTIONS Recommended Wire Length and Wire Diameter for Power Supply System AWG #12 AWG #12 C1852, CL1852 75 ft. 65 ft. 15 A 20 A AWG #12 Models Time DelayFuse orCircuitCapacity (B) *1 Inter-unit Wiring (A) *1 Power Supply *1 Refer to the Wiring System Diagrams (Se...
Page 22 - Electrical characteristics
– 22 – SM830079 8. ELECTRICAL DATA Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 - 208 V / 1 phase / 60 Hz 230 - 208 V / 1 phase / 60 Hz Rating conditions A 0.60 - 0.60 0.5 - 0.5 7.1 - 7.7 8.2 - 8.77 kW 0.12 - 0.11 0.11 - 0.10 1.56 - 1.53 1.79 - 1.74 Full l...
Page 23 - ELECTRICAL WIRING DIAGRAMS; • Electric Wiring Diagram; FMI
– 23 – SM830079 9. ELECTRICAL WIRING DIAGRAMS (1) Indoor Unit 1 1 1 1 1 XS1852 TH1 (Coil) 3 1 DP Connector 9P(WHT) Connector 2P(YEL) 3 1 FS 2 1 3 1 3 1 3 1 7 5 3 1 5 2 1 3 2 1 3 S P 1 2 3 1 2 3 1 2 3 4 5 6 7 8 9 1 P S P S 2 2 2 1 1 3 4 5 6 7 8 9 Connector 3P(WHT) • Electric Wiring Diagram W 854-2-52...
Page 24 - • Schematic Diagram
– 24 – SM830079 9. ELECTRICAL WIRING DIAGRAMS (1) Indoor Unit 1 1 1 1 1 XS1852 • Schematic Diagram S 854-2-5268-872-00-0 (XS1852) 2 1 3 1 3 1 2 IND 3 1 2 7 1 7 1 SW TR1 PRY Coil TH1 2 1 Room TH2 FS CR-TS2432 Controller 1 3 5 F1 (3A) 1 2 1 3 DP RY2 RY1 RY3 RY4 RY5 3 2 LM PR 1 1 RY5 4P-3 4P-2 4P-1 1 F...
Page 27 - PROCESSES AND FUNCTIONS; Room Temperature Control; Chart Summary and Explanations; Once the compressor starts, it keeps running for 5 minutes.; ON; OFF
– 27 – SM830079 10. PROCESSES AND FUNCTIONS (1) Room Temperature Control The Unit adjusts room temperature by turning the outdoor unit’s compressor ON and OFF.This process is controlled by the thermostat located in the remote control unit.The figures on this and the next pages show how each part of ...
Page 28 - Freeze Prevention
– 28 – SM830079 10. PROCESSES AND FUNCTIONS (2) Freeze Prevention Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces theefficiency of the unit, and frost buildup on the coil blocks cool air circulation from the indoorunit’s fan. Fig. 9 (3) Drain Pump Control Drain ...
Page 29 - Low ambient fan speed control; If the outdoor temperature falls below 57; seconds to give the motor an initial boost.
– 29 – SM830079 10. PROCESSES AND FUNCTIONS (4) Outdoor Fan Speed Control (CL1852) Low ambient fan speed control • This function protects the compressor from being damaged due to flowback of theliquid refrigerant to the compressor when the outdoor temperature is very low. • When the air temp. thermi...
Page 30 - SERVICE PROCEDURES; Check that voltage is within the specified range (; Single-phase outdoor unit
– 30 – SM830079 11. SERVICE PROCEDURES (1) Troubleshooting 1) Check before and after Troubleshooting Many problems may happen because of wiring or power supply problems, so youshould check these areas first. Problems here can cause false results in some of theother tests, and so should be corrected ...
Page 31 - Air Conditioner does not Operate; If resistance value is 1 M
– 31 – SM830079 11. SERVICE PROCEDURES 2) Air Conditioner does not Operate 1 1 1 1 1 Circuit breaker trips (or fuse blows). (a) When the circuit breaker is set to ON, it is tripped soon. • There is a possibility of ground fault.• Check insulation resistance. If resistance value is 1 M Ω or less, it ...
Page 32 - • There is a possibility of short circuit.; Neither indoor unit nor outdoor unit runs.; A. Power is not supplied; OK
– 32 – SM830079 11. SERVICE PROCEDURES (b) Circuit breaker trips in several minutes after turning the air conditioner on. • There is a possibility of short circuit. 2 2 2 2 2 Neither indoor unit nor outdoor unit runs. A. Power is not supplied 0615_X_S • Check power supply. Is power being supplied to...
Page 33 - C. Check “Operation selector” switch in the indoor unit.; YES
– 33 – SM830079 11. SERVICE PROCEDURES C. Check “Operation selector” switch in the indoor unit. D. Transformer in indoor unit. E. Check. auxiliary relay. 0617_X_S • Has “Operation selector” switch been set to ON position ? YES Set “Operation selector”switch to ON. NO But neither unit runs. Switch As...
Page 35 - Outdoor Unit does not Run.; A. Check COOL / FAN selector switch in the remote control unit.
– 35 – SM830079 11. SERVICE PROCEDURES 3) Outdoor Unit does not Run. A. Check COOL / FAN selector switch in the remote control unit. B. Check set temperature. 0623_X_S • Is COOL/FAN selector switch set to COOL ? NO Set to COOL. 0624_X_S Try to lower settemperature by Temperaturesetting button “COOLE...
Page 36 - C. Check compressor motor magnetic contactor.
– 36 – SM830079 11. SERVICE PROCEDURES E. Check outdoor unit P.C.B.(CL1822 Type) C. Check compressor motor magnetic contactor. F. Check float switch. • Refer to “11. (3) Drain Pump Control” D .Check indoor unit P.C.B. • Check coil resistance of compressor motor magnetic contactor. (PR) 1896_X_S 1897...
Page 37 - Some Part does not Operate.; • Check fan motor capacitor.
– 37 – SM830079 11. SERVICE PROCEDURES 5) Some Part does not Operate. A. Indoor fan does not run. 4) Indoor Unit does not Run. (Indoor fan and louver motor do not run.) B. Louver motor does not run. • Check resistance of fan motor winding. • Check fan motor capacitor. OK Relay RY1 or RY2 on the P.C....
Page 38 - Outdoor Fan does not Run.; • Check fan motor capacitor; Outdoor Fan does not Run for CL1852.
– 38 – SM830079 11. SERVICE PROCEDURES 6) Outdoor Fan does not Run. • Check resistance of fan motor winding. • Check fan motor capacitor OK • Check continuity between terminals on the compressor motor magnetic contactor. • Check fan rotation. Rotate the fan gently once or twice by hand. 0633_X_S • C...
Page 39 - Poor Cooling
– 39 – SM830079 11. SERVICE PROCEDURES 9) Poor Cooling Check installation position of remote control unit.• Does cool air from air condi- tioner reach remote control unit directly ? • Is wide tube between indoor unit and outdoor unit insulated ? 1040_X_S • Measure temperatures of suction and dischar...
Page 40 - A Sensor is Defective
– 40 – SM830079 11. SERVICE PROCEDURES (2) A Sensor is Defective 1 1 1 1 1 Indoor (heat exchanger) coil temp. Sensor is defective. (a) Open (=No continuity in sensor) Compressor and outdoor fan repeat ON for 10 minutes and OFF for 6 minuteswhen sensor opens. (b) Short “Freeze Prevention” does not op...
Page 41 - Checking the Electrical Components
– 41 – SM830079 11. SERVICE PROCEDURES (4) Checking the Electrical Components 1) Measurement of InsulationResistance • The electrical insulation is acceptable when the resistance exceeds 1 M Ω . 1 1 1 1 1 Power Supply Wires Clamp the earthed wire of the PowerSupply wires with a lead clip of theinsul...
Page 42 - Checking the Protective Devices; Disconnect the connector which leads to the indoor fan motor (FMI).
– 42 – SM830079 11. SERVICE PROCEDURES 2) Checking the Protective Devices • Disconnect the connector, which consists of P (plug) and S (socket) when you want to check theprotective device. • Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 17. • Normality of the protective de...
Page 43 - Checking the Electrical Parts
– 43 – SM830079 11. SERVICE PROCEDURES Fan motorcapacitor Compressor motorcapacitor 1041_X_S Multimeter Ω Fig. 18 3) Checking the Electrical Parts 1 1 1 1 1 Power transformer (TR1) ................. Indoor unit *Measure the coil resistance. • Primary 230-208 V ; Measure the resistance between two WH...
Page 44 - • Check for continuity using a multim-; Thermistor Characteristic Curve; Coil sensor
– 44 – SM830079 11. SERVICE PROCEDURES 6 6 6 6 6 Continuity of fuse on P.C.B.Ass’y • Check for continuity using a multim- eter as shown in Fig. 19. Method Used to Replace Fuse onPCB Ass’y 1. Remove the PCB Ass’y from the electrical component box. 2. Remove the fuse from PCB Ass’y using pliers while ...
