Sanyo KHS0971 Technical & Service Manual

Dc inverter split system air conditioner

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TECHNICAL & SERVICE MANUAL

KHS0971 + CH0971

KHS1271 + CH1271

DC INVERTER SPLIT SYSTEM AIR CONDITIONER

Indoor Model No.

KHS0971

KHS1271

Indoor Unit

KHS0971

KHS1271

IMPORTANT

These air conditioners employ new

refrigerant R410A.

Pay special attention when

servicing the unit.

All manuals and user guides at all-guides.com

Product Code No.

1 852 099 79

1 852 099 80

Outdoor Model No.

Product Code No.

CH0971

1 852 330 21

CH1271

1 852 330 22

Outdoor Unit

CH0971

CH1271

REFERENCE NO.

FILE NO.

Destination: North America

700647-06

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Summary of Contents for Sanyo KHS0971

Page 1 All manuals and user guides at all-guides.com TECHNICAL & SERVICE MANUAL KHS0971 + CH0971 FILE NO. KHS1271 + CH1271 Destination: North America DC INVERTER SPLIT SYSTEM AIR CONDITIONER Indoor Model No. Product Code No. Outdoor Model No. Product Code No.
Page 2 All manuals and user guides at all-guides.com Important! When Transporting Please Read Before Starting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees This air conditioning system meets strict safety and operating when lifting to reduce strain on your back.
Page 3 All manuals and user guides at all-guides.com Table of Contents Page 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 ....................
Page 4 All manuals and user guides at all-guides.com 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 .................
Page 5 All manuals and user guides at all-guides.com 1. OPERATING RANGE Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 95 °F D.B. / 71 °F W.B. 115 °F D.B. Cooling Minimum 67 °F D.B. / 57 °F W.B. 0 °F D.B. Maximum 80 °F D.B.
Page 6 All manuals and user guides at all-guides.com 2. SPECIFICATIONS 2-1. Unit Specifications KHS0971 Indoor Unit CH0971 Outdoor Unit Voltage Rating 115V Single-Phase 60Hz Cooling Heating Total Capacity BTU/h 9,000 ( 3,000 to 9,000 ) 12,200 ( 3,000 to 12,200 ) 2.65...
Page 7 All manuals and user guides at all-guides.com KHS1271 Indoor Unit CH1271 Outdoor Unit Voltage Rating 115V Single-Phase 60Hz Cooling Heating Total Capacity BTU/h 11,900 ( 3,000 to 11,900 ) 14,300 ( 3,000 to 14,300 ) ( 0.9 to 3.5 ) ( 0.9 to 4.2 ) Sensible Capacity 9,100...
Page 8 All manuals and user guides at all-guides.com 2-2. Major Component Specifications 2-2-1. Indoor Unit KHS0971 Indoor Unit Control PCB Part No. CB-KHS0971 Controls Microprocessor Control Circuit Fuse 250V 3A Remote Control Unit RCS-4HVPIS4U Type Cross-Flow Q'ty ... Dia. and Length inch (mm) 1 ...
Page 9 All manuals and user guides at all-guides.com KHS1271 Indoor Unit Control PCB Part No. CB-KHS1271 Controls Microprocessor Control Circuit Fuse 250V 3A Remote Control Unit RCS-4HVPIS4U Type Cross-Flow Q'ty ... Dia. and Length inch (mm) 1 ... D3-11/16 / L24-31/32 (D94/L634) Fan Motor Type AC Motor...
Page 10 All manuals and user guides at all-guides.com 2-2-2. Outdoor Unit CH0971 Outdoor Unit Control PCB Part No. CB-CH0971 Controls Microprocessor Control Circuit Fuse 125V 25A Compressor Type DC Rotary (Inverter) Compressor Model / Nominal Output G4C090LU1ER / 900W Compressor Oil ... Amount Pints (cc) FV50S ...
Page 11 All manuals and user guides at all-guides.com CH1271 Outdoor Unit Control PCB Part No. CB-CH1271 Controls Microprocessor Control Circuit Fuse 125V 25A Compressor Type DC Rotary (Inverter) Compressor Model / Nominal Output G4C090LU1ER / 900W Compressor Oil ... Amount Pints (cc) FV50S ...
Page 12 All manuals and user guides at all-guides.com 2-3. Other Component Specifications KHS0971 Indoor Unit KHS1271 Outdoor Unit CH0971 CH1271 • Indoor heat exchanger sensor (Model:PTM-D51H-S3 TH1) • Indoor air temp sensor • Compressor temp sensor (Model:PTM-D51H-S3 TH2) (Model:DTN-TKS274Y TH2) 32 50 68 86 104 122 140 158 176 194...
Page 13 All manuals and user guides at all-guides.com 3. DIMENSIONAL DATA KHS0971 Indoor Unit KHS1271 Unit: inch(mm)
Page 14 All manuals and user guides at all-guides.com Outdoor Unit CH0971 CH1271 21-3/16 3-19/32 15/32 10-13/16 Wide tube service valve dia.3/8" (9.52) 28-11/32 (720) 2-1/8 Narrow tube service valve dia.1/4" (6.35) 6-3/32 Unit: inch(mm)
Page 15 All manuals and user guides at all-guides.com 4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram KHS0971 Outdoor Unit CH0971 Indoor Unit KHS1271 CH1271 Indoor unit Outdoor unit Accumulator Wide tube service Wide tube valve High pressure switch Muffler O.D. H.P.
Page 16 All manuals and user guides at all-guides.com 5. PERFORMANCE DATA 5-1. Temperature Charts KHS0971 CH0971 Indoor Unit Outdoor Unit Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V) (1) Low pressure performance chart (1.2) Lo fan Hi Fan (1.1)
Page 17 All manuals and user guides at all-guides.com KHS0971 CH0971 Indoor Unit Outdoor Unit Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V) (1) High pressure performance chart (3.4) (2.9) (2.4) (1.9) (-5) (10) (15) (20) (25) Outdoor inlet air D.B.
Page 18 All manuals and user guides at all-guides.com KHS1271 CH1271 Indoor Unit Outdoor Unit Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V) (1) Low pressure performance chart (1.2) Lo fan Hi Fan (1.1) (1.0) (0.9) (0.8) (-20) (-15) (-10)
Page 19 All manuals and user guides at all-guides.com KHS1271 CH1271 Indoor Unit Outdoor Unit Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 115V) (1) High pressure performance chart (3.4) (2.9) (2.4) (1.9) (-5) (10) (15) (20) (25) Outdoor inlet air D.B.
Page 20 All manuals and user guides at all-guides.com 5-2. Cooling Capacity : KHS0971 Indoor Unit Outdoor Unit : CH0971 Power Supply : 115V Single Phase 60Hz < Cooling Capacity > RATING CAPACITY: 9,000 BTU/h AIR FLOW RATE: 282 CFM INDOOR OUTDOOR ENT.
Page 21 All manuals and user guides at all-guides.com : KHS1271 Indoor Unit Outdoor Unit : CH1271 Power Supply : 115V Single Phase 60Hz < Cooling Capacity > RATING CAPACITY: 11,900 BTU/h AIR FLOW RATE: 294 CFM INDOOR OUTDOOR ENT. TEMP. AMBIENT TEMP. W.B.
Page 22 All manuals and user guides at all-guides.com 5-3. Cooling Capacity (Low Ambient) : KHS0971 Indoor Unit Outdoor Unit : CH0971 Power Supply : 115V Single Phase 60Hz < Cooling Capacity (Low Ambient) > RATING CAPACITY: 9,000 BTU/h AIR FLOW RATE:...
Page 23 All manuals and user guides at all-guides.com : KHS1271 Indoor Unit Outdoor Unit : CH1271 Power Supply : 115V Single Phase 60Hz < Cooling Capacity (Low Ambient) > RATING CAPACITY: 11,900 BTU/h AIR FLOW RATE: 294 CFM INDOOR OUTDOOR ENT. TEMP. AMBIENT TEMP.
Page 24 All manuals and user guides at all-guides.com 5-4. Heating Capacity : KHS0971 Indoor Unit Outdoor Unit : CH0971 Power Supply : 115V Single Phase 60Hz < Heating Capacity > RATING CAPACITY: 12,200 BTU/h AIR FLOW RATE: 312 CFM OUTDOOR INDOOR ENT.
Page 25 All manuals and user guides at all-guides.com : KHS1271 Indoor Unit Outdoor Unit : CH1271 Power Supply : 115V Single Phase 60Hz < Heating Capacity > RATING CAPACITY: 14,300 BTU/h AIR FLOW RATE: 312 CFM OUTDOOR INDOOR ENT. TEMP. AMBIENT TEMP. W.B.
Page 26 All manuals and user guides at all-guides.com 5-5. Air Throw Distance Charts KHS0971 Indoor Unit Room air temp. : 80°F (26.7°C) Cooling Fan speed High Horizontal distance (ft.) : Flap angle 0°, : Axis air velocity 0° : Flap angle 0 , : Axis air velocity 0 : Flap angle 30°,...
Page 27 All manuals and user guides at all-guides.com KHS1271 Indoor Unit Room air temp. : 80 °F (26.7 °C ) Cooling Fan speed High Horizontal distance (ft.) : Flap angle 0°, : Axis air velocity 0° : Flap angle 0 , : Axis air velocity 0 : Flap angle 30°, : Axis air velocity...
Page 28 All manuals and user guides at all-guides.com 6. ELECTRICAL DATA 6-1. Electrical Characteristics KHS0971 Indoor Unit Outdoor Unit CH0971 Cooling Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor + Compressor Performance at 115V Single-phase 60Hz Rating conditions Running amp.
Page 29 All manuals and user guides at all-guides.com 6-2. Electric Wiring Diagrams KHS0971 KHS1271 Indoor Unit To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. TERMINAL BASE EVAPORATOR 1 3 5...
Page 30 All manuals and user guides at all-guides.com Outdoor Unit CH0971 CH1271 To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. REACTANCE POWER RELAY 1P-CONNECTOR ( WHT ) 1P-CONNECTOR ( WHT ) FERRITE TERMINAL CORE...
Page 31 All manuals and user guides at all-guides.com 7. MAINTENANCE 7-1. Address Setting of the Remote Control Unit The address can be set in order to prevent interference between remote controllers when two indoor units are installed near each other. The address is normally set to "A."...
Page 32 All manuals and user guides at all-guides.com 7-2. Disconnecting and Connecting Positive Connector for Outdoor Unit One of the two types of connectors illustrated at left is used. Their basic structure is the same for each. How to Disconnect Hold the resin connector cover, and pull the connector off. You cannot disconnect the connector by pulling the wire since it is locked inside.
Page 33 All manuals and user guides at all-guides.com 8. FUNCTIONS 8-1. Operation Functions Emergency operation SENSOR DRY Emergency operation is available when the remote During DRY operation, the system adjusts the room temperature and fan speed according to the conditions in the controller malfunctions, has been lost, or otherwise room, in order to maintain a comfortable room environment.
Page 34 All manuals and user guides at all-guides.com HIGH POWER NIGHT SETBACK This function acts to raise the power but keeps the AC system in When NIGHT SETBACK operation is set, the temperature and the same operating mode. fan speed settings will be adjusted automatically to allow This function is set with the HIGH POWER button on the remote comfortable sleep.
Page 35 All manuals and user guides at all-guides.com 8-2. Protective Functions Overload prevention during heating Cold-air prevention during heating During HEAT operation, the temperature of the indoor heat During heating, the fan speed is set to "LL" (very low) or stopped. exchanger is used to control the frequency and lessen the load As the temperature of the indoor heat exchanger rises, the fan on the compressor before the protective device is activated.
Page 36 All manuals and user guides at all-guides.com Defrost detection and release CT (Peak current cut-off control) • This function prevents the circuit breaker or fuse from operating Reverse-Cycle Defrosting 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.
Page 37 All manuals and user guides at all-guides.com 9. TROUBLESHOOTING 9-1. Precautions before Performing Inspection or Repair After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair. High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge (charging voltage DC 310V) even after the power is turned OFF, and some time is required for the charge to dissipate.
Page 38 All manuals and user guides at all-guides.com (1) Self-diagnostics Lamps INDOOR UNIT (1) OPERATION lamp (2) TIMER lamp (3) QUIET lamp ION lamp OPERATION button REMOTE CONTROL receiver Since the indications cover various units, the corresponding parts listed below may not be present in some models..
Page 39 All manuals and user guides at all-guides.com (2) If the self-diagnostics function fails to operate • No indicators illuminate and the Check the indoor unit. indoor fan does not rotate. • Check the power voltage. Blown Is the fuse blown? Normal Replace the circuit board or the fuse.
Page 40 All manuals and user guides at all-guides.com (3) Serial Communication Error Identification Procedure If the lamps on the main body show the following conditions after the completion of self-diagnostics, a communication error between the indoor unit and outdoor unit might be considered. In such a case, identify the breakdown section by using the following procedure.
Page 41 All manuals and user guides at all-guides.com ( Continued from the previous page A. ) ( Continued from the previous page B. ) Is the voltage of about DC22V to 24V given between the terminals 2 and 3 on the indoor unit terminal strip (Serial Communication Line) ? (Fig.
Page 42 All manuals and user guides at all-guides.com (3-2) Condition: E12 Troubleshooting Serial Communication Outdoor Unit Power 1. Turn off the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF. 2. Disconnect the cable from the terminal 3 on the Outdoor Indoor Unit unit terminal strip.
Page 43 All manuals and user guides at all-guides.com 9-4. Trouble Diagnosis of Fan Motor 9-4-1. 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.
Page 44 All manuals and user guides at all-guides.com 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 installed for ordinary use, preventing these problems.
Page 45 All manuals and user guides at all-guides.com 10. CHECKING ELECTRICAL COMPONENTS Ground wire 10-1. Measurement of Insulation Resistance Clip The insulation is in good condition if the resistance exceeds 1M ohm. Probe 10-1-1. Power Supply Cord Insulation tester Clamp the grounding wire of power cord with the lead Fig.
Page 46 All manuals and user guides at all-guides.com 10-2. Checking Continuity of Fuse on PCB Ass'y Fuse 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 PCB Ass'y Fig.
Page 47 All manuals and user guides at all-guides.com 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 about the same level as the conventional refrigerant, R22.
Page 48 All manuals and user guides at all-guides.com 11-2. Checklist before Servicing Use a clutch-type flare tool for R410A or the conventional flare tool. Note that sizes of the resultant flares differ between these two tools. Where a conventional flare tool is used, make sure to observe A Specification (amount of extrusion) by using the flare spacer.
Page 49 All manuals and user guides at all-guides.com 11-3. Tools Specifically for R410A For servicing, use the following tools for R410A Tool Distinction Tool Name Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Refrigerant recovery unit Vacuum pump with anti-reverse flow (*1) Tools specifically for R410A (Solenoid valve-installed type, which prevents oil from flowing back into the unit when the power is off, is recommended.)
Page 50 All manuals and user guides at all-guides.com 11-5. In Case of Compressor Malfunction Should the compressor malfunction, be sure to make the switch to a replacement CAUTION compressor as quickly as possible. Use only the tools indicated exclusively for R410A. See "11-3.
Page 51 All manuals and user guides at all-guides.com (5) Recharging Configuration and characteristics of cylinders Be sure to charge the specified amount of Valve refrigerant in liquid state using the service port of the wide tube service valve. The proper amount is listed on the unit's nameplate. When the entire amount cannot be charged all at once, charge gradually while operating the unit in Cooling Operation.
Page 52 All manuals and user guides at all-guides.com 11-6. In Case Refrigerant is Leaking Never attempt to charge additional refrigerant when refrigerant has been leaking CAUTION from the unit. Follow the procedure described below to locate points of leaks and carry out repairs, then recharge the refrigerant. (1) Detecting Leaks Use the detector for R410A to locate refrigerant leak points.
Page 53 All manuals and user guides at all-guides.com 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. Never charge additional refrigerant if refrigerant is leaking from the unit.
Page 54 All manuals and user guides at all-guides.com APPENDIX A INSTRUCTION MANUAL KHS0971 + CH0971 KHS1271 + CH1271 (OI-852-6-4180-802-00-2)
Page 55 All manuals and user guides at all-guides.com 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 •...
Page 56 All manuals and user guides at all-guides.com Contents Page Features ........................2 Product Information....................3 Alert Symbols......................3 Installation Location ....................4 Electrical Requirements ...................4 Safety Instructions....................4 Names of Parts ......................5 Using the Remote Control Unit ................10 Operation with the Remote Control Unit ..............12 1.
Page 57 All manuals and user guides at all-guides.com 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 same as the voltage shown on the nameplate.
Page 58 All manuals and user guides at all-guides.com Names of Parts Air intakes INDOOR UNIT Air outlet Remote control unit Drain hose Refrigerant tubes OUTDOOR UNIT Air outlet This illustration is based on the external view of a standard model. NOTE Consequently, the shape may differ from that of the air conditioner which you have selected.
Page 59 All manuals and user guides at all-guides.com Unit Display and Operation Button INDOOR UNIT IMPORTANT OPERATION lamp TIMER lamp Avoid using radio equipment QUIET lamp QUIET such as mobile phone near ION lamp (within 4 ft.) the remote control receiver. Some radio OPERATION button equipment may cause malfunction of the unit.
Page 60 All manuals and user guides at all-guides.com Remote Control Unit (Display) Displayed when transmitting data Displayed when indoor unit sensor is in use Displayed when setting temperature Displayed when temperature is shown Displayed when setting timer Displayed when the time display is set to 12-hour time.
Page 61 All manuals and user guides at all-guides.com Remote Control Unit Sensor Transmitter (Cover closed) Display ON/OFF operation button ION button 1 HR. TIMER button Temperature setting buttons (TEMP.) QUIET button MODE selector button FAN SPEED selector button NIGHT SETBACK button FLAP button HIGH POWER button ON TIME...
Page 62 All manuals and user guides at all-guides.com Remote Control Unit (continued) Temperature setting buttons Press the button to increase the set temperature. (TEMP.) Press the button to reduce the set temperature. The temperature setting changes by 1 °C or 2 °F each time one of the TEMP. buttons is pressed.
Page 63 All manuals and user guides at all-guides.com Remote Control Unit (continued) SENSOR button When you press this button (use a small-tipped object such as a ballpoint pen), 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 conditioner is controlled accordingly.
Page 64 All manuals and user guides at all-guides.com Using the Remote Control Unit (continued) How to Use the Remote When using the remote control unit, always point the unit’s transmitter head Control Unit directly at the air conditioner’s receiver. Air conditioner (Indoor unit) Receiver Remote control...
Page 65 All manuals and user guides at all-guides.com 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. STEP 2 STEP 1 Check that the circuit breaker on the power panel is turned on.
Page 66 All manuals and user guides at all-guides.com Operation with the Remote Control Unit (continued) 2. Manual Operation STEP 2 STEP 3 STEP 1 STEP 4 STEP 5 Check that the circuit breaker on the power panel is turned on. NOTE 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.
Page 67 All manuals and user guides at all-guides.com Operation with the Remote Control Unit (continued) • Choose the best position in the room for the remote control unit, which also NOTE 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.
Page 68 All manuals and user guides at all-guides.com 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. mark appears in the display. To release the night setback function, press the NIGHT SETBACK button again. A.
Page 69 All manuals and user guides at all-guides.com Operation with the Remote Control Unit (continued) 6. QUIET Mode QUIET Mode is used to reduce the fan sound of the indoor unit. Press the QUIET button. mark appears in the display. To cancel, press QUIET button again. •...
Page 70 All manuals and user guides at all-guides.com Special Remarks ‘‘DRY’’ ( ) Operation 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.
Page 71 All manuals and user guides at all-guides.com Setting the Timer In the descriptions below, the following settings are used for the temperature and NOTE time indicator selector button on the bottom front section of the remote control. • Temperature: °F •...
Page 72 All manuals and user guides at all-guides.com Setting the Timer (continued) 3. How to set the ON time (Example) To start operation at 7:10 am. Operation Indication 1. Press the ON TIME setting The timer indication is button once. displayed, and the present ON time is shown.
Page 73 All manuals and user guides at all-guides.com Using the 1-Hour OFF Timer 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. indicator in the display indicates that this function is operating.
Page 74 All manuals and user guides at all-guides.com 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 CAUTION position during the cooling or dehumidifying operation.
Page 75 All manuals and user guides at all-guides.com Operation without the Remote Control Unit 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 changing color of the OPERATION lamp.
Page 76 All manuals and user guides at all-guides.com Care and Cleaning (continued) Anti-Mold Filter The anti-mold filter behind the air intake grille should be checked and cleaned at least once every two weeks. How to remove the anti-mold 1. Grasp both ends of the air Air intake grille filter intake grille, and remove it by...
Page 77 All manuals and user guides at all-guides.com Care and Cleaning (continued) Air Clean Filter The air clean filter removes dust and dirt from the air, and reduces odors and smoke from tobacco. This air clean filter cannot remove harmful gases or vapors nor ventilate air in the room.
Page 78 All manuals and user guides at all-guides.com 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. Trouble Possible Cause Remedy Air conditioner does not run at all.
Page 79 All manuals and user guides at all-guides.com APPENDIX B INSTALLATION INSTRUCTIONS KHS0971 + CH0971 KHS1271 + CH1271 (II-852-6-4189-990-00-5)
Page 80 I Basic Functions of the Service Valves I Pump Down SANYO Commercial Solutions In Canada A Division of SANYO North America Corporation SANYO Canada Inc. Cornerstone Business Park, 1-300 Applewood Crescent, Concord 1062 Thorndale Avenue, Ontario, L4K 5C7, Canada 85264189990005 ©...
Page 81 All manuals and user guides at all-guides.com IMPORTANT! Please Read Before Starting When Installing… This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important …In a Ceiling or Wall part of your job to install or service the system so it operates Make sure the ceiling/wall is strong enough to hold the safely and efficiently.
Page 82 Cut each tube to the appropriate lengths 1' to 1'4" limitations. (30 cm to 40 cm) to dampen vibration between units. Table 2 Narrow Tube Wide Tube Model Outer Dia. Thickness Outer Dia. Thickness KHS0971/1271 1/4" (6.35 mm) 0.0314" (0.8 mm) 3/8" (9.52 mm) 0.0314" (0.8 mm)
Page 83 Additional Refrigerant (ft.) (ft.) (ft.) (oz./ft.)* KHS0971 0.16 KHS1271 0.16 * If total tubing length becomes 25 to 50 ft. (Max.) or 25 to 65 ft. (Max.), charge additional refrigerant (R410A) by 0.16 oz./ft. No additional charge of compressor oil is necessary. For more detailed charging information, refer to the Technical & Service Manual.
Page 84 All manuals and user guides at all-guides.com 2-2. Outdoor Unit Exhaust fan AVOID: Hot air Heat source heat sources, exhaust fans, etc. (Fig. 4) damp, humid or uneven locations. Outdoor unit choose a place as cool as possible. choose a place that is well ventilated. Fig.
Page 85 All manuals and user guides at all-guides.com 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 panel. (Fig. 6) (2) Press the 2 marks on the frame cover and disen- gage the stationary tabs from the frame.
Page 86 All manuals and user guides at all-guides.com (4) Using a sabre saw, key hole saw or hole-cutting drill NOTE attachment, cut a hole in the wall. See Table 4 and Hole should be made at a slight downward slant to the Fig.
Page 87 All manuals and user guides at all-guides.com Air intake grille Grille 3-4. Remove the Grille to Install the Indoor Unit Basically, these models can be installed and wired without removing the grille. If access to any internal part is need- ed, follow the steps as given below.
Page 88 All manuals and user guides at all-guides.com 3-5. Shape the Indoor Side Tubing (1) Arrangement of tubing by direction Frame a) Right or left tubing Cut out the corner of the right/left frame with a Left tubing hacksaw or the like. (Figs. 20 and 21) outlet b) Right-rear or left-rear tubing In this case, the corner of the frame need not be...
Page 89 All manuals and user guides at all-guides.com 3-7. Recommended Wire Length and Diameter Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Carefully observe these regulations when carrying out the installation. Table 5 lists recommended wire lengths and diameters for power supply systems.
Page 90 All manuals and user guides at all-guides.com 3-8. Wiring Instructions for Inter-unit Connections Rear Wall (1) Insert the inter-unit wiring (according to local codes) panel into the through-the-wall PVC pipe. Run the wiring Plastic toward the indoor side allowing approx. 10" (25 cm) cover to extend from the wall face.
Page 91 All manuals and user guides at all-guides.com Loose wiring may cause the WARNING terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected. When connecting each power wire to the corresponding terminal, follow the instructions “How to connect wiring to the terminal”...
Page 92 All manuals and user guides at all-guides.com 3-9. Mounting (1) To install the indoor unit, mount the indoor unit onto the 2 tabs on the upper part of the rear plate. (2) Hold down the air discharge outlet and press the lower part of the indoor unit until it clicks to securely fasten to the 2 tabs on the lower part of the rear plate.
Page 93 All manuals and user guides at all-guides.com I Left-side tubing Rear panel (1) Lead the tubing and drain hose through the wall, Hole in wall allowing sufficient length for connection. Then bend the tubing using a tube bender to make the attach- ment.
Page 94 All manuals and user guides at all-guides.com To unmount indoor unit Press the 2 marks on the lower part of the indoor unit and unlatch the tabs. Then lift the indoor unit and unmount. (Fig. 42) 3-10. Drain Hose a) The drain hose should be slanted downward to the outdoors.
Page 95 All manuals and user guides at all-guides.com 4. How to Install the Outdoor Unit First refer to Section 2. Installation Site Selection. 4-1. Wiring Instructions for the Outdoor Unit Lock nut Cabinet Regulations on wire size differ from locality to locality. For field wiring requirements, please refer to your local elec- trical codes.
Page 96 All manuals and user guides at all-guides.com 5. Refrigerant Tubing Deburring Before After 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.
Page 97 All manuals and user guides at all-guides.com 5-4. Connecting Tubing between Indoor and Torque wrench Outdoor Units a) Tightly connect the indoor side refrigerant tubing exten- Spanner ded from the wall with the outdoor side tubing. (Fig. 52) Indoor unit b) To fasten the flare nuts, apply specified torque as: Table 6 Outdoor unit...
Page 98 All manuals and user guides at all-guides.com 6. Air Purging Indoor unit Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. Therefore, they must be purged completely. pressure in the system rises operating current rises cooling (or heating) efficiency drops Outdoor unit moisture in the air may freeze and block capillary tubing...
Page 99 All manuals and user guides at all-guides.com (5) With the vacuum pump still running, close the “Lo” knob of the manifold valve. Then stop the vacuum pump. 90° (1/4 turn) Narrow tube (6) With the accessory hex wrench, turn the valve stem on the narrow tube service valve counter-clockwise Hex wrench by 90 degrees (1/4 turn) for 10 seconds, and then...
Page 100 All manuals and user guides at all-guides.com 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.
Page 101 All manuals and user guides at all-guides.com Basic Functions of the Service Valves The basic functions of the service valves are given in Table 8 below. Table 8 Narrow Tube Service Wide Tube Service Action Valve (2-Way) Valve (3-Way) O-ring Valve cap CLOSED Stem...
Page 102 All manuals and user guides at all-guides.com 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: In direct sunlight Behind a curtain or other place where it is covered More than 26' (8 m) away from the air conditioner...
Page 103 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 nor- mally set to “A.” To set a different address, it is neces- sary to change the address on the second remote con- troller.
Page 104 All manuals and user guides at all-guides.com SANYO Commercial Solutions A Division of SANYO North America Corporation 1300 Michael Drive, Suite A Wood Dale, IL 60191, U.S.A. Sanyo Canada Inc. 1-300 Applewood Crescent, Concord, Ontario L4K 5C7, CANADA Apr. / 2009 (T)

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