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.
Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers. When Installing In a Ceiling or Wall Make sure the ceiling/wall is strong enough to hold the unit’s...
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 R410A 11-4.
2. SPECIFICATIONS 2-1. Unit Specifications KHS0971 Indoor Unit CH0971 Outdoor Unit Voltage Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Moisture Removal (High) Available Voltage Range Running Amperes Power Input Power Factor SEER HSPF Compressor Locked Rotor Amperes...
KHS1271 Indoor Unit CH1271 Outdoor Unit Voltage Rating Total Capacity Sensible Capacity Latent Capacity Air Circulation (High) Moisture Removal (High) Available Voltage Range Running Amperes Power Input Power Factor SEER HSPF Compressor Locked Rotor Amperes Fuse or Circuit Breaker Capacity Controls / Temperature Control Control Unit Timer...
2-2. Major Component Specifications 2-2-1. Indoor Unit KHS0971 Indoor Unit Control PCB Part No. Controls Control Circuit Fuse Remote Control Unit Type Q'ty ... Dia. and Length Fan Motor Type Model ... Q'ty No. of Poles Rough Measure RPM (Cool / Heat) Nominal Output Coil Resistance (Ambient Temp.
KHS1271 Indoor Unit Control PCB Part No. Controls Control Circuit Fuse Remote Control Unit Type Q'ty ... Dia. and Length Fan Motor Type Model ... Q'ty No. of Poles Rough Measure RPM (Cool / Heat) Nominal Output Coil Resistance (Ambient Temp. 68 °F (20 °C)) Safety Device Type Operating Temp.
CH1271 Outdoor Unit Control PCB Part No. Controls Control Circuit Fuse Compressor Type Compressor Model / Nominal Output Compressor Oil ... Amount Coil Resistance (Ambient Temp. 68 °F (20 °C)) Safety Device CT (Peak current cut-off control) Compressor Discharge Temp. Control Operation cut-off control in abnormal ambient Temp.
IMPORTANT Because capillary tubing is used in the outdoor unit, both the wide and narrow tubes of this air conditioner become cold. To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a proper insulation material.
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 becomes extremely high in heating mode. (Refer to "8-2. Overload prevention during heating.") CH0971 (3.4)
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 becomes extremely high in heating mode. (Refer to "8-2. Overload prevention during heating.") CH1271 (3.4)
6. ELECTRICAL DATA 6-1. Electrical Characteristics KHS0971 Indoor Unit Outdoor Unit CH0971 Cooling Performance at Rating conditions Running amp. Power input Rating conditions: Indoor air temperature: Outdoor air temperature: Heating Performance at Rating conditions Running amp. Power input Rating conditions:...
6-2. Electric Wiring Diagrams KHS0971 KHS1271 Indoor Unit EVAPORATOR CONNECTOR FLAP FLAP MOTOR FAN MOTOR GRN/YEL FAN MOTOR CAPACITOR To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 1 3 5 1 3 5 5P (BLU) FLAP...
NOTE Once changed, you cannot restore the original address setting of the air conditioner. (1) Switch on the power source. (2) Break the address-setting tab marked "A" on the second remote controller to change the address (Fig.
7-2. Disconnecting and Connecting Positive Connector for Outdoor Unit Pull the cover upward When the cover is pulled upward, the lock is released with the sequence of 1 and 2. One of the two types of connectors illustrated at left is used. Their basic structure is the same for each.
8. FUNCTIONS 8-1. Operation Functions Emergency operation Emergency operation is available when the remote controller malfunctions, has been lost, or otherwise cannot be used. To operate the system, press the OPERATION button, which is also used as the receiver, below the unit display. Each time this button is pressed, the OPERATION lamp changes color to indicate the type of operation.
The main unit display lamp also becomes dimmer. COOL and DRY modes When the night setback mode is selected, the air conditioner automatically raises the temperature setting 2°F(1°C) when 30 minutes have passed after the selection was made, and then another 2°F(1°C) after another 30 minutes have passed,...
Area: Further frequency increase is prohibited. When the temperature falls below Point B, prevention of a rise in frequency is released and the air conditioner operates as in area. The compressor will stop if the temperature of the compressor discharge exceeds 248°F(120°C) due to shortage of gas or...
2 minutes after it is stopped, compressor is ON. 4-way valve is ON. Outdoor fan is ON. NOTE If the air conditioner is turned off during the defrosting cycle, it will continue defrosting and turn itself off after defrosting is completed.
Follow the procedure below to perform diagnostics. PROCEDURE After turning on power to the air conditioner, use the remote controller and follow the steps below to execute self-diagnostics. Step 1: Press and hold the remote controller ION button and 1 HR TIMER button.
(1) Self-diagnostics Lamps INDOOR UNIT Since the indications cover various units, the corresponding parts listed below may not be present in some models. Indication on indoor unit Quiet Timer Operation Code REMOTE CONTROL receiver ... OFF Diagnostics items Room temperature sensor failure (1) Sensor open circuit or short circuit (2) Contact failure at connector or open circuit at terminal crimping location Indoor heat exchanger sensor failure...
(2) If the self-diagnostics function fails to operate Check the indoor unit. Is the fuse blown? Replace the controller. 9-3. Checking the Indoor and Outdoor Units (1) Checking the indoor unit Control Use the remote controller to operate the unit in "TEST run" mode. To determine whether the mode is currently in "TEST run"...
(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. Refer to "Method of Self-Diagnostics"...
( Continued from the previous page A. ) 1. Turn OFF the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF. 2. Short-circuit between the terminals 2 and 3 on the outdoor unit terminal strip. 1.
(3-2) Condition: E12 Troubleshooting Serial Communication 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 unit terminal strip. 1.
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.
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. However, depending on the installation conditions, these effects may still occur.
10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance The insulation is in good condition if the resistance exceeds 1M ohm. 10-1-1. Power Supply Cord Clamp the grounding wire of power cord with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the two power wires.
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. Fuse Fig.
When refrigerant R410A is used, the composition will differ depending on whether it is in gaseous or liquid phase, and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state. Thus, always charge the refrigerant while it is in liquid phase.
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.
11-3. Tools Specifically for R410A For servicing, use the following tools for R410A Tool Distinction Tools specifically for R410A Tools which can be com- monly used for R22, R407C, and R410A The above tools specifically for R410A must not be used for R22 and R407C. CAUTION Doing so will cause malfunction of the unit.
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. Specifically for R410A." 11-5-1. Procedure for Replacing Compressor (1) Recovering refrigerant Any remaining refrigerant inside the unit should not be released to the atmosphere, but recovered using the...
(5) Recharging Be sure to charge the specified amount of 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.
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.
11-8. Retro-Fitting Existing Systems 11-8-1. Use of Existing Units Never use new refrigerant R410A for existing units which use R22. This will cause the air conditioner to operate improperly and may result in a hazardous condition. 11-8-2. Use of Existing Tubing If replacing an older unit that used refrigerant R22 with a R410A unit, do not use its existing tubing.
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 unit contains several features to facilitate automatic operation, easy logically displayed for easy use.
Care and Cleaning ...22 Troubleshooting...25 Operating Range...25 Product Information If you have problems or questions concerning your Air Conditioner, you will need the following information. Model and serial numbers are on the nameplate on the bottom of the cabinet. Model No. ______________________ Date of purchase ___________________________________________________ Dealer’s address ___________________________________________________...
Otherwise there is a risk of suffocation in an extreme case. • Do not turn the air conditioner on and off from the power mains switch. Use the ON/OFF operation button. • Do not stick anything into the air outlet of the outdoor unit. This is dangerous because the fan is rotating at high speed.
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 control unit. Air from the room is drawn into this section and passes through air filters which remove dust.
(within 4 ft.) the remote control receiver. Some radio equipment may cause malfunction of the unit. If the trouble happens, disconnect power and restart the air conditioner after a few minutes. REMOTE CONTROL receiver OPERATION button OPERATION lamp TIMER lamp...
Displayed when the time display is set to 12-hour time. (1) Operation mode AUTO ... HEAT ... MILD DRY ... COOL ... FAN ... (2) Fan speed Automatic operation ... HIGH ... MEDIUM... LOW ... (3) Temperature setting 60 – 86 °F When set to 80 °F temperature indication...
Transmitter When you press the buttons on the remote control unit, the the display to transmit the setting changes to the receiver in the air conditioner. Sensor A temperature sensor inside the remote control unit senses the room temperature.
: The air conditioner starts at the set time. : The air conditioner stops at the set time. : The air conditioner stops and starts, or starts and stops, at the set times every day. For details, see “Setting the Timer”.
If the signal from the remote control unit stops for more than 15 minutes due to the loss of the remote control unit or other trouble, the air conditioner will switch to the temperature sensor which is built into the indoor unit and control the room temperature. In these cases, the temperature around the remote control unit may differ from the temperature detected at the air conditioner’s position.
Before mounting the remote control unit, press the ON/OFF operation button at the mounting location to make sure that the air conditioner operates from that location. The indoor unit should make a beeping sound to indicate that it has received the signal.
Check that the circuit breaker on the power panel is turned on. Once mode is selected and the unit is preset by following the steps below, you can have the air conditioner automatically bring the room to the desired temperature simply by pressing the ON/OFF operation button. STEP 1...
Set the FAN SPEED selector button to the setting you want. STEP 5 Press the FLAP button and set the airflow direction as desired. (Refer to “Adjusting the Airflow Direction” on page 21.) To stop the air conditioner, press the ON/OFF operation button again. STEP 2 STEP 3 STEP 1 →...
NOTE 3. Adjusting the Fan Speed A. Automatic fan speed B. Manual fan speed 4. Fan Only STEP 3 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.
To release the night setback function, press the NIGHT SETBACK button again. When the night setback mode is selected, the air conditioner automatically raises the temperature setting 2 °F when 30 minutes have passed after the selection was made, and then another 2 °F after another 30 minutes have...
Operation with the Remote Control Unit (continued) 6. QUIET Mode 7. HIGH POWER Mode 8. ION 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. •...
‘‘DRY’’ operation is not possible if the indoor temperature is 59 °F or less. • Because this air conditioner heats a room by drawing in the heat of the outside air (heat pump system), the heating efficiency will fall off when the outdoor temperature is very low.
2. Press the Advance, Return ( , ) button until PM 10:30 is displayed. 3. Press the CLOCK button again. (Example) To stop the air conditioner at 11:00 am. 1. Press the OFF TIME setting button once. 2. Press the Advance, Return ( , ) button until AM 11:00 is displayed.
) button until AM 7:10 is displayed. 3. Wait a few seconds, and then the setting is complete. (Example) To start operation at 7:10 am. and stop the air conditioner at 11:00 am. 10:30 pm. 7:10 am. Present time 1. Set the timer ON/OFF times as shown in 2-1, 2, 3 and 3-1, 2, 3.
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. Setting procedure: Regardless of whether the unit is operating or stopped, press the 1 HR. TIMER button.
1. Horizontal CAUTION 2. Vertical A. Sweep function The flap starts moving up and down to deliver air over the sweep range. C. Auto flap function The flap is set to the recommended position. NOTE CAUTION OI-802-21EG Adjusting the Airflow Direction The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right.
Auto. Care and Cleaning 1. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning. 2. Do not pour water on the indoor unit to clean it. This will damage the internal components and cause an electric shock hazard.
Anti-Mold Filter How to remove the anti-mold filter Cleaning How to replace the anti-mold filter NOTE OI-802-23EG Care and Cleaning (continued) The anti-mold filter behind the air intake grille should be checked and cleaned at least once every two weeks. 1.
Cleaning the negative Follow the steps below when the generator has ion generator become dirty. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning. Remove the dust on the negative ion generator.
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 Air conditioner does not run at all. OPERATION lamp blinks and air conditioner does not operate.
The illustrations are based on the typical appearance of a standard model. Consequently, the shape may differ from that of the air conditioner that you are installing. SANYO Commercial Solutions A Division of SANYO North America Corporation Cornerstone Business Park, 1062 Thorndale Avenue, Bensenville, IL 60106, U.S.A.
Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin alu- minum fins on the air conditioner can cut your fingers. When Installing… …In a Ceiling or Wall Make sure the ceiling/wall is strong enough to hold the unit’s weight.
1. General This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning.
WARNING tion and the possibility of fire, do not place obstacles, enclosures and grilles in front of or surround- ing the air conditioner in a way that may block air flow. AVOID: direct sunlight. nearby heat sources that may affect performance of the unit.
2-2. Outdoor Unit AVOID: heat sources, exhaust fans, etc. (Fig. 4) damp, humid or uneven locations. choose a place as cool as possible. choose a place that is well ventilated. allow enough room around the unit for air intake/ exhaust and possible maintenance. (Fig. 5a) provide a solid base (level concrete pad, concrete block, 4"...
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. (Fig. 7) (3) Remove the rear panel.
(4) Using a sabre saw, key hole saw or hole-cutting drill attachment, cut a hole in the wall. See Table 4 and Fig. 10. Table 4 Hole Dia. 2-9/16" (65 mm) (5) Measure the thickness of the wall from the inside edge to the outside edge and cut PVC pipe at a slight angle 1/4"...
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. Be sure to wear work gloves CAUTION during installation to avoid being cut by the sharp aluminum fins...
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.
No wire should be allowed to touch refrigerant tubing, the compressor, or any moving part. WARNING To avoid the risk of electric shock, each air conditioner unit must be grounded. For the installation of a grounding device, please observe local electrical codes.
3-8. Wiring Instructions for Inter-unit Connections (1) Insert the inter-unit wiring (according to local codes) into the through-the-wall PVC pipe. Run the wiring toward the indoor side allowing approx. 10" (25 cm) to extend from the wall face. (Fig. 24) (2) Grasp both ends of the air intake grille, and remove it by opening towards the front and pulling towards you.
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”...
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.
I Left-side tubing (1) Lead the tubing and drain hose through the wall, allowing sufficient length for connection. Then bend the tubing using a tube bender to make the attach- ment. (Fig. 38) (2) Switch the drain hose and drain cap. Switching drain hose and drain cap (a) Locate the drain hose and the drain cap.
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.
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.
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.
5-4. 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 Tube Dia.
6. Air Purging 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 moisture in the air may freeze and block capillary tubing water may lead to corrosion of parts in the refrigerant system I Air Purging with a Vacuum Pump (for Test Run)
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.
The basic functions of the service valves are given in Table 8 below. Table 8 Narrow Tube Service Action CLOSED Shipping Fully OPEN Operating and test running the air conditioner Fully OPEN Measuring pressure and gas charging CLOSED Air purging with a vacuum pump CAUTION When opening or clos-...
In direct sunlight Behind a curtain or other place where it is covered More than 26' (8 m) away from the air conditioner In the path of the air conditioner’s airstream Where it may become extremely hot or cold...
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.
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)