Page 2 - SPECIAL PRECAUTIONS; CAUTION; Please Read Before Starting; If Necessary, Get Help; In Case of Improper Installation
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 haza...
Page 3 - Table of Contents; REFRIGERANT FLOW DIAGRAM; -1. Address Setting of the Remote Control Unit
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. Cooling Capacity 5-3....
Page 4 - CHECKING ELECTRICAL COMPONENTS; 0-1. Measurement of Insulation Resistance; SPECIAL PRECAUTIONS WHEN SERVICING UNIT; 1-1. Characteristics of New Refrigerant R410A; APPENDIX A INSTRUCTION MANUAL; Page
10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance 10-2. Checking Continuity of Fuse on PCB Ass'y 11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1. Characteristics of New Refrigerant R410A 11-2. Checklist before Servicing 11-3. Tools Specifically for R41...
Page 6 - Voltage Rating
2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit KHS1872 Outdoor Unit CH1872 < 230V > 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. Heating: Indoor air temperature...
Page 10 - Indoor Unit
Indoor Unit KHS1872 MP24Z3-12V Flap Motor Type Stepping Motor Rating Model Coil Resistance Ohm (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 400 +/- 7% DC 12V Aluminum Plate Fin / Copper Tube 2 19.5 3.07 (0.285) Face Area Coil Rows Fins Per inch Heat Exchanger Coil ft 2 (m 2 ) DATA SUBJECT T...
Page 12 - Outdoor Unit
Outdoor Unit CH1872 2-2-2. Outdoor Unit Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CH1872 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VAC External Finish Acrylic baked-on enamel finish FV50S ... 0.74 ...
Page 14 - • Indoor air temp sensor; • Outdoor air temp sensor; Temperature
2-3. Other Component Specifications Indoor Unit KHS1872 KHS2472 Outdoor Unit CH1872 CH2472 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 10 2 3 4 5 6 7 8 9 10 59 68 77 86 95 104 (10) (15) (20) (25) (30) (35) (40) • Indoo...
Page 18 - Indoor unit; Insulation of Refrigerant Tubing; both tubes must be well insulated
Compressor 4-way valve Accumulator High pressure switch Wide tube service valve Wide tube Narrow tube service valve Narrow tube Heat exchanger Heat exchanger Muffler Capillary tube for split flow Cooling cycle (Defrosting cycle) Heating cycle Indoor unit Outdoor unit Electric expansion valve Straine...
Page 19 - NOTE; (3) Indoor discharge air performance chart
5. PERFORMANCE DATA 5-1. Temperature Charts Indoor Unit KHS1872 Outdoor Unit CH1872 • Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. NOTE Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V) (1) Low pres...
Page 27 - from the actual heating characteristics.
Indoor Unit : KHS1872 Outdoor Unit : CH1872 Power Supply : 230V Single Phase 60Hz < Heating Capacity > 5-4. Heating Capacity TH : Total Heating Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B. : Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6...
Page 29 - : Axis air velocity 0
Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 70°F (21.1°C) Fan speed : High Heating Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 80°F (26.7°C) Fan speed : High Cooling : Flap angle 0 , : Axis air ve...
Page 31 - Heating
6. ELECTRICAL DATA 6-1. Electrical Characteristics Indoor Unit KHS1872 Outdoor Unit CH1872 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 tempera...
Page 33 - WARNING; To avoid electrical shock hazard, be sure to
EVAPORATOR TERMINAL BASE TO OUTDOOR UNIT GRN/YEL LAMP 10P(WHT) FLAP 5P (WHT) FLAP CONNECTOR FLAP MOTOR RED PNK BLU BRN YEL 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 AC1 AC2 SI WHT RED WHT WHT WHT WHT WHT WHT WHT WHT 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 IN...
Page 36 - Control Unit
Test run mode Self-diagnostic mode Address setting mode Fig. 13 Fig. 14 Fig. 15 Tab ACL button ION button ACL (Reset) button ON/OFF operation button 1 HR.TIMER button 7. MAINTENANCE 7-1. Address Setting of the Remote Control Unit The address can be set in order to prevent interference between remote...
Page 41 - Heating operation; Defrosting Sequence; Releasing of defrosting; Reverse-Cycle Defrosting; Defrost detection and release
This function prevents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current has increased due to an increase in the cooling / heating load, or to a decrease in the power supply voltage. In these cases, operation frequency is reduced or operation...
Page 42 - -1. Precautions before Performing Inspection or Repair; PROCEDURE
1HR. TIMER button ON/OFF operation button ACL (Reset) button ION button < Clock display > Test run mode Self-diagnostics mode 9. TROUBLESHOOTING 9-1. Precautions before Performing Inspection or Repair NOTE After checking the self-diagnostics monitor, turn the power OFF before starting inspecti...
Page 44 - No indicators illuminate and the
(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 44
Page 45 - -3. Checking the Indoor and Outdoor Units; operation by 60 times faster than normal).; Use the remote controller to operate the; Control
9-3. Checking the Indoor and Outdoor Units (1) Checking the indoor unit (2) Checking the outdoor unit 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 1/60th (accelerates operation by 60 times fa...
Page 46 - (3) Serial Communication Error Identification Procedure; < Check Items before Troubleshooting Serial Communication Start >
(3) Serial Communication Error Identification Procedure Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure. (3-1) Condition: E01 < Before the Operation > If the lamps on the main body show the following conditions after the completion of self-diagnostics,a communi...
Page 49 - 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 50 - DC 14V or more
9-4-2. 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. Perform the trouble diagnosis by Test Run mode described on Installation Instructions. [Tr...
Page 51 - -5. Noise Malfunction and Electromagnetic Interference
9-5. 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 install...
Page 52 - CHECKING ELECTRICAL COMPONENTS; Resistance; Resistance for Electrical Parts
Insulation tester Probe Clip Ground wire Terminal plate Copper tube or metallic part Clip Insulation tester Probe Fig. 1 Fig. 2 Fig. 3 Fig. 4 Copper tube or metallic part Clip Insulation tester Probe Clip Insulation tester Probe Metallic part From fan motor, compressor and other parts 10. CHECKING E...
Page 53 - Remove the PCB Ass'y from the electrical
Fuse PCB Ass'y Fig. 5 Fig. 6 Fuse 10-2. 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. 53
Page 54 - 1-1. Characteristics of New Refrigerant R410A; composition of the remaining refrigerant.; Thus, always charge the refrigerant while it is in liquid phase.
11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1. Characteristics of New Refrigerant R410A 11-1-1. 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 55 - Specification A
Tubing precautions Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation.Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in...
Page 56 - For servicing, use the following tools for R410A; Tools specifically for R410A; Tool Distinction; exclusively for R410A and never alternately with R22 and R407C.; unit and outdoor unit.; HAB oil
11-3. Tools Specifically for R410A For servicing, use the following tools for R410A Gauge manifoldCharging hoseGas leak detectorRefrigerant cylinderCharging cylinderRefrigerant recovery unitVacuum pump with anti-reverse flow (*1)(Solenoid valve-installed type, which prevents oil from flowing back in...
Page 57 - 1-5. In Case of Compressor Malfunction; Use a solenoid valve-installed vacuum pump; Length of tubing
11-5. 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 "11-3. Tools Specifically for R410A." 11-5-1. Procedure for Replacing Compr...
Page 58 - 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 59 - 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 11-6. 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 60 - 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.
11-7. Charging Additional Refrigerant 11-7-1. 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. 11-8. Retro-Fitting Existing Systems 11-8-1. ...
Page 62 - 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 63 - Contents; Product Information
3 Contents Page Features ...................................................................................................................2Product Information..................................................................................................3Alert Symbols ..............................
Page 64 - 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 65 - 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 66 - 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 heating and cooling operation. Each time this button is pressed, the ty...
Page 68 - 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 70 - 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 71 - 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 72 - Automatic Operation; Check that the circuit breaker on the power panel is turned on.
12 Operation with the Remote Control Unit 1. Automatic Operation This unit automatically switches between cooling operation and heating operation according to the difference between the room temperature and the temperature setting. Check that the circuit breaker on the power panel is turned on. Once...
Page 73 - Operation with the Remote Control Unit (continued)
13 Operation with the Remote Control Unit (continued) 2. Manual Operation Check that the circuit breaker on the power panel is turned on. If the automatic operation settings of the unit do not meet your needs, press the setting buttons as described below and change the settings as desired. STEP 1 Pr...
Page 74 - Adjusting the Fan Speed; A. Automatic fan speed; Simply set the FAN SPEED selector button to the
14 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 75 - Night Setback Mode; Night Setback Mode is used for saving energy.; mark appears in the display.; A. In Cooling and DRY
15 Operation with the Remote Control Unit (continued) 5. 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. A. In Cooling and DR...
Page 77 - Special Remarks; Heating performance; Power failure during
17 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 78 - Setting the Timer; How to set the present
18 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 80 - The
20 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 81 - Adjusting the Airflow Direction; The flap automatically closes when the unit is off.
21 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 82 - Care and Cleaning
22 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 type of operation conducted is indicated by the changi...
Page 85 - Trouble Possible
25 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: Tro...
Page 87 - This air conditioner uses the new refrigerant R410A.; SANYO Commercial Solutions; In Canada; INSTALLATION INSTRUCTIONS; – Inverter Split System Air Conditioner –; N OT E
This air conditioner uses the new refrigerant R410A. Refrigerant service valve size = 5/16" N OT E 85264189 989 003 © SANYO 2007 SANYO Commercial Solutions In Canada A Division of SANYO North America Corporation SANYO Canada Inc. Cornerstone Business Park, 1-300 Applewood Crescent, Concord 1062 ...
Page 90 - Installation Site Selection
4 1-5. Additional Materials Required for Installation 1. Refrigeration (armored) tape 2. Insulated staples or clamps for connecting wire (See local codes) 3. Putty 4. Refrigeration lubricant 5. Clamps or saddles to secure refrigerant tubing 2. Installation Site Selection 2-1. Indoor Unit AVOID: G di...
Page 91 - choose a place as cool as possible.
Fig. 5d Air i n take Co n crete or eq u al Abo u t 4" (10 cm) Mi n . 4" (10 cm) A n chor bolt s (4 pc s .) Abo u t 1'4" (40 cm) (CH1872) Fig. 5e Air i n take Co n crete or eq u al Abo u t 6" (15 cm) Mi n . 6" (15 cm) A n chor bolt s (4 pc s .) Abo u t 1'4" (40 cm) (CH2472) 5 ...
Page 92 - How to Install the Indoor Unit; -1. Remove the Rear Panel from the Unit; Also avoid areas where elec-
6 S et s crew o n ly for tra ns portatio n Fig. 6 Rear pa n el mark s Fig. 7 Left tubing Right tubing Downward tubing Right-rear tubing(recommended) Left-rear tubing Fig. 8 3. How to Install the Indoor Unit 3-1. Remove the Rear Panel from the Unit (1) Remove and discard the set screw on the rear pan...
Page 93 - Table 4; Rawl pl
7 I n door s ide O u tdoor s ide Hole should be made at a slight downward slant to the outdoor side. N OT E Fig. 10 Plastic cover INSIDE OUTSIDE Wall Slightangle PVC pipe (Locally purchased) Fig. 12 PVC pipe (Locally p u rcha s ed) C u t at s li g ht a ng le Fig. 11 (4) Using a sabre saw, key hole s...
Page 95 - General precautions on wiring
9 3-5. Shape the Indoor Side Tubing (1) Arrangement of tubing by direction a) Right or left tubing Cut out the corner of the right/left frame with a hacksaw or the like. (Figs. 20 and 21) b) Right-rear or left-rear tubing In this case, the corner of the frame need not be cut. (2) To mount the indoor...
Page 96 - regulations when carrying out the installation.; N O T E
(A)+(B) (A) Power Supply Wiring Length (ft) (C) Control Fuse or Circuit AWG (B) Power Line Length (ft) Line Length (ft) Model (#14) (#12) (#14) Breaker Capacity CH1872, CH2472 131 (Max.) 230 (Max.) 98 (Max.) 20A 10 3-7. Recommended Wire Length and Diameter Regulations on wiring diameter differ from ...
Page 102 - How to Install the Outdoor Unit; -1. Wiring Instructions for the Outdoor Unit
16 4. How to Install the Outdoor Unit First refer to Section 2. Installation Site Selection. 4-1. Wiring Instructions for the Outdoor Unit Regulations on wire size differ from locality to locality. For field wiring requirements, please refer to your local elec- trical codes. Make sure that the insta...
Page 103 - Refrigerant Tubing; -2. Flaring Procedure with a Flare Tool; If the; us
17 5. Refrigerant Tubing 5-1. Use of the Flaring Method Many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts. 5-2...
Page 104 - Clamp
18 5-4. Connecting Tubing between Indoor and Outdoor Units a) Tightly connect the indoor side refrigerant tubing exten-ded from the wall with the outdoor side tubing. (Fig. 52) b) To fasten the flare nuts, apply specified torque as: Table 6 5-5. Insulation of Refrigerant Tubing To prevent heat loss ...
Page 107 - OPERATION lamp
21 How to Test Run the Air Conditioner 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 Test Run mode. (Fig. 59a) a) Press and hold the ION button. b) Then press and hold the 1HR TIMER button...
Page 108 - Pump Down; (1) Connect the Lo side charging hose of the manifold; Basic Functions of the Service Valves; Action; Wide Tu
22 I Pump Down Pump down means collecting all refrigerant gas in thesystem back into the outdoor unit without losing any ofthe gas. Pump down is used when the unit is to bemoved or before servicing the refrigerant circuit. Pump Down Procedure Be sure to carry out pump down with the unit incooling mo...
Page 109 - Remote Control Unit Installation Position; To take out the remote control unit, pull it forward.
23 7. 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: G In direct sunlight G Behind a ...
Page 110 - -1. Address Setting of the Remote Control Unit
24 8. Address Switch 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 “A.” To set a different address, it is necessary to change...
