Page 2 - SPECIAL PRECAUTIONS
When Wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM. SPECIAL PRECAUTIONS This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death. This symbol refers to a haz...
Page 3 - Table of Contents; REFRIGERANT FLOW DIAGRAM
Table of Contents 1. OPERATING RANGE 2. SPECIFICATIONS 2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications 3. DIMENSIONAL DATA 4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram 5. PERFORMANCE DATA 5-1. Temperature Charts 5-2. Air Throw Distance Ch...
Page 4 - Page
10. TROUBLESHOOTING 10-1. Precautions before Performing Inspection or Repair10-2. Method of Self-Diagnostics10-3. Checking the Indoor and Outdoor Units10-4. Trouble Diagnosis of Fan Motor10-5. Noise Malfunction and Electromagnetic Interference 11. CHECKING ELECTRICAL COMPONENTS 11-1. Measurement of ...
Page 6 - Voltage Rating
6 2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit KS1872 Outdoor Unit C1872 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are:Cooling: Indoor air temperature 80°F D.B . / 67°F W.B. Outdoor air temperature 95°F D.B . / 75°F W.B. ( 4,100 to 17,700 ) Air Circulation (High) Sh...
Page 11 - Dimensions & Weight
11 Indoor Unit KS1872 Outdoor Unit CL1872 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are:Cooling: Indoor air temperature 80°F D.B . / 67°F W.B. Outdoor air temperature 95°F D.B . / 75°F W.B. ( 4,100 to 17,700 ) Air Circulation (High) Shipping Volume 20 42 / 38 / 30 / 28 51 4.2...
Page 14 - Indoor Unit
14 2-2. Major Component Specifications 2-2-1. Indoor Unit Indoor Unit KS1872 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Micro F V A C - Over-Heat Protection (Ambient Temp. 68 o F (20 o C)) Coil Resistance Ohm Coil Resistance Ohm Safety Device Flap Motor Type Stepping Motor Rough Measure RPM (Cool) Run C...
Page 16 - Outdoor Unit
16 2-2-2. Outdoor Unit Outdoor Unit C1872 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) Ohm R - S : 0.482 S - T : 0.482T - R : 0.482 CT (Peak current cut-off control) Compressor Discharge Temp. Control Operation cut-off control in abnormal ambient Temp. Model Operation Temp. Micro F V A C RED - ...
Page 20 - Indoor air temp sensor; Outdoor air temp sensor; Temperature
2-3. Other Component Specifications Indoor Unit KS1872 KS2472 Outdoor Unit C1872 C2472 CL1872 CL2472 0 32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) 40 60 80 100 120 140 160 180 200 20 50 1 0 2 3 4 5 6 7 8 9 10 59 68 77 86 95 104 (10) (15) (20) (25) (30) (35) (...
Page 24 - Indoor unit; REFRIGERANT FLOW DIAGRAM; Insulation of Refrigerant Tubing; both tubes must be well insulated
Compressor Accumulator Wide tubeservicevalve Wide tube Narrowtubeservicevalve Narrow tube Heat exchanger Heat exchanger Muffler Cooling cycle Indoor unit Outdoor unit Electric expansion valve M *1 *1 O.D.1/2"(12.7mm) ... 1872 class O.D.5/8"(15.88mm) ... 2472 class O.D.1/4"(6.35 mm) H.P. ...
Page 25 - NOTE
5. PERFORMANCE DATA 5-1. Temperature Charts Indoor Unit KS1872 Outdoor Unit C1872 Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. Overload prevention operates to protect the air conditioner when outdoor ambient temperature becom...
Page 31 - Cooling
6. ELECTRICAL DATA 6-1. Electrical Characteristics Indoor Unit KS1872 Outdoor Unit C1872 Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.3 Power input W A W A W A W 32 6.7 1,468 Rating conditions: Indoor air temperatu...
Page 33 - WARNING
EVAPORATOR TERMINAL BASE TO OUTDOOR UNIT GRN/YEL LAMP 10P(WHT) FLAP5P (WHT) FLAP CONNECTOR FLAP MOTOR RED PNK BLU BRN YEL 12345 12345 12345 12345 AC1 AC2 SI WHT RED WHTWHTWHTWHTWHTWHTWHTWHT 123456789 10 123456789 10 123456789 10 123456789 10 IND LAMP ASSY ROOM/COIL 4P(WHT) DCM6P(BLU) CONTROLLER FM F...
Page 37 - INSTALLATION INSTRUCTIONS
WARNING 7. INSTALLATION INSTRUCTIONS 7-1. Installation Site Selection 7-1-1. Indoor Unit To prevent abnormal heat generation and the possibility of fire, do not place obstacles, enclosures and grilles in front of or surrounding the air conditioner in a way that may block air flow. For stable operati...
Page 39 - -2. Recommended Wire Length and Diameter; WIRING SYSTEM DIAGRAM
DisconnectswitchField supply 1 2 3 1 2 3 4 5 6 Grounding line 230 / 208V 230 / 208V 230 / 208V INDOOR UNIT OUTDOOR UNIT Groundingline L1 L2 Power supply Single phase 230 / 208V 60HZ Terminal Terminal (A) (B) (C) (B) (A) Power Supply Wiring Length (ft.)(B) Power Line Length (ft.) (C) Control Line Len...
Page 40 - -3. Remote Control Unit Installation Position; To take out the remote control unit, pull it forward.
7-3. Remote Control Unit Installation Position The remote control unit can be operated from either a non-fixed position or a wall-mounted position. To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places: In direct sunlight Behind a curta...
Page 41 - OPERATION lamp; -4. How to Test Run the Air Conditioner; I M P O R T A N T
Fig. 8a Fig. 8b Fig. 8c 1HR.TIMER ON/OFF operation ACL(Reset) ION button button button button OPERATION lamp TIMER lamp QUIET lampION lamp After turning on power to the air conditioner, use the remote controller and follow the steps below to conduct the test run. (1) Set the remote controller in Tes...
Page 42 - How to remove the grille
Air intake grille Grille Fig. 9a Fig. 9b Cover Thermistor Fig. 10a Thermistor Fig. 10b Fig. 11a Tab Tab Fig. 11b Fig. 12b Pin Groove Fig. 12a 7-5. Remove the Grille to Install the Indoor Unit Basically, these models can be installed and wired withoutremoving the grille. If access to any internal par...
Page 43 - Control Unit
1HR.TIMERbutton ON/OFFoperationbutton ACL(Reset)button IONbutton 8. MAINTENANCE 8-1. Address Setting of the Remote Control Unit The address can be set in order to prevent interference between remote controllers when two Sanyo indoor units are installed near each other. The address is normally set to...
Page 48 - 0-1. Precautions before Performing Inspection or Repair; PROCEDURE
1HR.TIMERbutton ON/OFFoperationbutton ACL(Reset)button IONbutton < Clock display > Test run mode Self-diagnostics mode 10. TROUBLESHOOTING 10-1. Precautions before Performing Inspection or Repair NOTE PROCEDURE After checking the self-diagnostics monitor, turn the power OFF before starting ins...
Page 50 - Normal
(2) If the self-diagnostics function fails to operate Check the indoor unit. Is the fuse blown? Replace the controller. Replace the circuit board or the fuse. No indicators illuminate and the indoor fan does not rotate.Check the power voltage. Normal Blown 50
Page 51 - 0-3. Checking the Indoor and Outdoor Units; operation by 60 times faster than normal).; Control
10-3. Checking the Indoor and Outdoor Units (1) Checking the indoor unit (2) Checking the outdoor unit (3) Checking the serial communications Using the TEST/T-RUN terminals Control No. Check items (unit operation) T-RUN : Test run (compressor and fan motor turn ON). TEST/MV : Compresses time to 1/60...
Page 52 - Measurement location; DC 14 V or more; Normal value
[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor unit operates. (There is trouble in the system that provides feedback of motor rotation speed from the motor to the indoor unit controller.) [Trouble symptom 4] Fan motor rotation speed does no...
Page 53 - DC 14V or more
10-4-2. Outdoor Fan Motor This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. To perform diagnosis, follow the instructions in "(2) Checking the Outdoor Unit" ...
Page 54 - 0-5. Noise Malfunction and Electromagnetic Interference
10-5. Noise Malfunction and Electromagnetic Interference An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices. A noise filter is instal...
Page 55 - CHECKING ELECTRICAL COMPONENTS; Resistance; Resistance for Electrical Parts
Insulation tester Probe Clip Ground wire Terminal plate Coppertube ormetallic part Clip Insulation tester Probe Fig. 1 Fig. 2 Fig. 3 Fig. 4 Coppertube ormetallic part Clip Insulation tester Probe Clip Insulation tester Probe Metallic part From fan motor,compressor and other parts 11. CHECKING ELECTR...
Page 56 - Remove the PCB Ass'y from the electrical
Fuse PCB Ass'y Fig. 5 Fig. 6 Fuse 11-2. Checking Continuity of Fuse on PCB Ass'y Remove the PCB Ass'y from the electrical component box. Then pull out the fuse from the PCB Ass'y. (Fig. 5) Check for continuity using a multimeter as shown in Fig. 6. 56
Page 57 - SPECIAL PRECAUTIONS WHEN SERVICING UNIT; 2-1. Characteristics of New Refrigerant R410A; Less toxic, more chemically stable refrigerant; Thus, always charge the refrigerant while it is in liquid phase.
12. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 12-1. Characteristics of New Refrigerant R410A 12-1-1. What is New Refrigerant R410A? R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its refrigeration capacity and energy efficiency are a...
Page 59 - Doing so will cause malfunction of the unit.; When the tubes are connected,; HAB oil
12-3. Tools Specifically for R410A For servicing, use the following tools for R410A Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Refrigerant recovery unit Vacuum pump with anti-reverse flow (*1) (Solenoid valve-installed type, which prevents oil from flowing ...
Page 60 - 2-5. In Case of Compressor Malfunction; compressor as quickly as possible.; Length of tubing
12-5. In Case of Compressor Malfunction CAUTION Should the compressor malfunction, be sure to make the switch to a replacement compressor as quickly as possible. Use only the tools indicated exclusively for R410A. See "12-3. Tools Specifically for R410A." 12-5-1. Procedure for Replacing Comp...
Page 61 - Single valve
Valve Single valve Charge liquid refrigerant with cylinder in up-side-down position. Single valve (with siphon tube) Charge with cylinder in normal position. Liquid Valve Liquid Charging cylinder Open Refrigerant cylinder Liquid NO! CAUTION Never charge a large amount of liquid refrigerant at once t...
Page 62 - carry out repairs, then recharge the refrigerant.
Length of tubing Evacuation time Less than 33 ft. (10 m) More than 10 minutes More than 33 ft. (10 m) More than 15 minutes 12-6. In Case Refrigerant is Leaking CAUTION Never attempt to charge additional refrigerant when refrigerant has been leaking from the unit. Follow the procedure described below...
Page 63 - with the indoor unit.; Charge additional refrigerant in liquid state only.; This will cause the air conditioner to; do not use its existing tubing.; completely new tubing must be used.; out repairs. Only then should you recharge the refrigerant.
12-7. Charging Additional Refrigerant 12-7-1. When Tubes are Extended Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state only. 12-8. Retro-Fitting Existing Systems 12-8-1. ...
Page 65 - Features
2 Features This air conditioner is an inverter type unit that automatically adjusts capacity as appropriate. Details on these functions are provided below; refer to these descriptions when using the air conditioner. • Microprocessor Controlled Operation The interior compartment of the remote control...
Page 66 - Contents; Product Information
3 Contents Page Features ............................................................................................................ 2Product Information........................................................................................... 3Alert Symbols ..........................................
Page 67 - Wiring must be done by a qualified electrician.; Safety Instructions; Do not let children play with the air conditioner.
4 Installation Location • We recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the Installation Instructions provided with the unit. • Before installation, check that the voltage of the electric supply in your home or office is the sam...
Page 68 - Names of Parts; Moisture in the room condenses and drains off through this hose.
5 Names of Parts This illustration is based on the external view of a standard model.Consequently, the shape may differ from that of the air conditioner which you have selected. This air conditioner consists of an indoor unit and an outdoor unit. You can control the air conditioner with the remote c...
Page 69 - Unit Display and Operation Button; This lamp lights when the system is being controlled by the timer.; Cooling operation
6 Unit Display and Operation Button REMOTE CONTROL receiver This section picks up infrared signals from the remote control unit (transmitter). OPERATION button When the remote control cannot be used, pressing this button enables cooling operation. Each time this button is pressed, the operation mode...
Page 71 - Remote Control Unit; When you press the buttons on the remote control unit, the
8 Remote Control Unit The illustration above pictures the remote control unit after the cover has been opened. Transmitter When you press the buttons on the remote control unit, the mark appears in the display to transmit the setting changes to the receiver in the air conditioner. Sensor A temperatu...
Page 73 - Using the Remote Control Unit; This switches the temperature display between °C and °F.
10 Remote Control Unit (continued) Using the Remote Control Unit SENSOR button When you press this button (use a small-tipped object such as a ballpoint pen), the mark will appear at the display. And the room temperature is detected by the sensor which is built into the indoor unit and the air condi...
Page 74 - Using the Remote Control Unit (continued)
11 Using the Remote Control Unit (continued) How to Use the Remote Control Unit When using the remote control unit, always point the unit’s transmitter head directly at the air conditioner’s receiver. Remote Control Unit Installation Position The remote control unit may be operated either from a non...
Page 76 - Operation with the Remote Control Unit (continued); Adjusting the Fan Speed; A. Automatic fan speed; Simply set the FAN SPEED selector button to the
13 Operation with the Remote Control Unit (continued) • Choose the best position in the room for the remote control unit, which also acts as the sensor for room comfort and transmits the operating instructions. Once you’ve found this best position, always keep the remote control unit there. • This a...
Page 77 - Night Setback Mode; Night Setback Mode is used for saving energy.; mark appears in the display.
14 Operation with the Remote Control Unit (continued) 4. Night Setback Mode Night Setback Mode is used for saving energy. Press the NIGHT SETBACK button while operation. The mark appears in the display. To release the night setback function, press the NIGHT SETBACK button again. In Cooling and DRY M...
Page 79 - Special Remarks; Clicking sound is heard from; Power failure during
16 Special Remarks How it works? • Once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically. • During DRY operation, the fan speed automatically runs at lower speed for providing a comfortable breeze. • ‘‘DRY’’ operation is not possible if the...
Page 80 - Setting the Timer; How to set the present
17 Setting the Timer In the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom front section of the remote control.• Temperature: °F • Time: AM, PM 1. How to set the present time (Example) To set to 10:30 pm. 2. How to set the OFF...
Page 82 - The
19 Using the 1-Hour OFF Timer Tips for Energy Saving 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed. The indicator in the display indicates that this function is operating. Setting proce...
Page 83 - Adjusting the Airflow Direction; The flap automatically closes when the unit is off.
20 Adjusting the Airflow Direction 1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifying operation. If the vertical vane...
Page 84 - Care and Cleaning
21 Operation without the Remote Control Unit Care and Cleaning INDOOR UNIT If you have lost the remote control unit or it has trouble, follow the steps below. When the air conditioner is not running Each time the OPERATION button is pressed, the operation mode changes cyclically. The temperature is ...
Page 87 - Trouble Possible
24 Troubleshooting If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center. Operating Range The air conditioner is operable within the temperature ranges as listed below: For...
