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Panasonic CS-KS18NKU Service Manual

1. 1 Grasp both ends of the air intake grille and remove Fig 16a it by opening towards the front and pulling towards ou Fig 16a 2 R n M Fig 16b emove the 3 screws Fig m NE iN 3 Remove the screw on the right side cover plate and open the cover Fig 17a 4 Take out the thermistor from the grille Fig 17b Fig 16b 5 Press the 3 tabs at the top of the grille and the 3 g Cover tabs on the front face to separate the grille from the Thermistor Thermistor frame Fig 18a 6 Pull the grill toward you to remove it How to replace the grille 1 When installing the grille place the bottom of the grille into the frame first Fig 18b Then insert the tabs on the top of the grille and on Lx the front face into the frame l 2 sure that the grille frame are firmly fitted together by engaging the tabs UO LH 3 Attach the thermistor on the grille Fig 17a u 4 Close the cover and replace the screw Fig 17a w away VIT TIEG SDS LY MINH ARR v S U 12 ens 5 Affix the grille with the 3 previously removed screws Fig 16b 6 Install the air intake grille a Allow the edge of the air intake grille to slide into the top of
2. REFRIGERANT FLOW DIAGRAM 4 1 Refrigerant Flow Diagram MR m PERFORMANCE DATA 5 1 Temberdture NCS 8 2 lia 5 3 Cooling Capacity Low Ambient aaaaannaaaaaaaaaaaaaaaaaaaanaaaauaaanaaanaannnanunannnannnaanaaanaaanaaananaanaaana 5 4 Air Throw Distance Charts ita bi di ELECTRICAL DATA o MEE 5 55 CIS CPD C G iu uu E 6 2 Electric Wiring Diagrams MAINTENANCE 7 1 Address Setting of the Remote Control Unit 7 2 Disconnecting and Connecting Positive Connector for Outdoor Unit FUNCTIONS Operanoni E RIO mmm 8 2 Protective Functions naaaaaaaaaaaaaaaaananunsnnnnnunnnnnnunnnnnnnnnnnnunnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnunnnnnnnnnaaa TROUBLESHOOTING BEFORE CALLING FOR SERVICE 9 1 Precautions before Performing Inspection or Repair 9 2 Method of Self Diagnostics 9 3 Checking the Indoor and Outdoor Units 9 4 Trouble Diagnosis of Fan Motor 9 5 Noise Malfunctio
3. kW 5 15 1 210 5 15 E Sensible Capacity BTU h E Air Circulation Hi Me Lo ft min m3 h 524 890 444 749 377 641 e Running Amperes A o 77 12177 l Powerit O O W 1 500 25010 1 500 Power Factor 2 EER BTU h W Compressor Locked Rotor Amperes A Airflow Direction Indoor Horizontal Vertical R410A 2 87 1 300 Operation Sound Indoor Hi Me Lo Qt dB A 42 38 30 28 Qt Quiet mode Outdoor Hi dB A 51 Refrigerant Tubing Connections Refrigerant Narrow tube inch mm 1 4 6 35 Tube Diameter Wide tube inch mm o Unit Dimensions inch f 11 23 32 x 41 15 16 x 8 5 8 26 3 8 x 34 21 32 x 11 7 32 Height Width x Depth mm 298 x 1 065 x 219 670 x 880 x 285 Package Dimensions inch 11 27 32 x 45 1 8 x 15 5 32 28 27 32 x 39 27 32 x 14 29 32 Height x Width x Depth mm 2 Weight Net Ibs kg E Shipping Ibs kg a 4 59 0 13 9 88 0 28 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 80 F DB 67 F WB Outdoor air temperature 95 F DB 75 F WB oo Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKU lt 230V gt Total Capacity BTU h 24 200 4 000 to 24 200 kW 71 121074 E Sensible Capacity BTU n 5 Air Circulation Hi Me Lo ft min m h 659 1 120 571 970 494 839 Moisture Removal High Pints h 4 89 Available Voltage Range V 187 to 253 Running A
4. Cooling Capacity Low Ambient gt RATING CAPACITY 17 500 BTU h AIR FLOW RATE 524 CFM INDOOR OUTDOOR ENT TEMP F C AMBIENT TEMP C Bm fura uso ee cn es 72 22 2 76 24 4 7 84 28 9 88 31 1 72 22 2 i l 76 24 4 80 26 7 84 28 9 88 31 1 72 22 2 76 24 4 80 26 7 84 28 9 88 31 1 72 22 2 U 76 24 4 80 26 7 84 28 9 88 31 1 63 2 67 4 71 T 76 24 4 80 26 7 84 28 9 88 31 1 TC Total Cooling Capacity BTU h SHC Sensible Heat Capacity BTU h NOTE 1 Above data does not take Freeze Prevention Protection during cooling operation into account For this reason the value may vary from the actual cooling characteristics 2 Above data represents the value when the operation frequency of a compressor is fixed 32 Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKUA Power Supply 230V Single Phase 60Hz Cooling Capacity Low Ambient gt RATING CAPACITY 24 200 BTU h AIR FLOW RATE 659 CFM INDOOR OUTDOOR ENT TEMP F C AMBIENT TEMP C M gt era eso cen 139 n ea 72 22 2 i 76 24 4 7 84 28 9 88 31 1 72 22 2 i 76 24 4 80 26 7 84 28 9 88 31 1 72 22 2 76 24 4 80 26 7 84 28 9 88 31 1 72 22 2 76 24 4 80 2
5. EER BIUNW 1 98 Compressor Locked Rotor Amperes A Airflow Direction Indoor Horizontal Vertical RATOA 7 4 30 1 950 Operation Sound Indoor Hi Me Lo Qt dB A 47 44 41 30 Qt Quiet mode Outdoor Hi dB A 55 Refrigerant Tubing Connections Refrigerant Narrow tube inch mm 1 4 6 35 Tube Diameter Wide tube inch mm o Unit Dimensions inch f 11 23 32 x 41 15 16 x 8 5 8 29 1 8 x 35 7 16 x 12 19 32 Height x Width x Depth mm 298 x 1 065 x 219 740 x 900 x 320 Package Dimensions inch 11 27 32 x 45 1 8 x 15 5 32 34 3 16 x 41 11 32 x 16 21 32 Height x Width x Depth mm 2 Weight Net Ibs kg E Shipping Ibs kg E 4 59 0 13 13 41 0 38 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 80 F DB 67 F WB Outdoor air temperature 95 F DB 75 F WB o Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKUA 230V gt Total Capacity BTU h 17 500 4 000 to 17 500 kW 5 15 1 210 5 15 E Sensible Capacity BTU h E A Air Circulation Hi Me Lo ft min m3 h 524 890 441 749 377 641 Rumning Amperes af 70 12170 l Powerit O O W 1 500 25010 1 500 Power Factor 2 EER BTU h W Compressor Locked Rotor Amperes A Airflow Direction Indoor Horizontal Vertical R410A 2 87 1 300 Operation Sound Indoor Hi Me Lo Qt dB A 42 38 30 28
6. 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 Serial No Date of purchase Dealer s address Phone number e Air Sweep Control This function moves a flap up and down in the air outlet directing air in a Sweeping motion around the room and providing comfort in every corner e Auto Flap Control This automatically sets the flap to the optimum position during heating cooling and drying operation e Automatic Restart Function for Power Failure Even when power failure occurs preset programmed operation can be reactivated once power resumes High Power Operation The unit operates at maximum output for 30 minutes regardless of the desired temperature The fan speed is 1 step above High Quiet Operation The fan rotates slower than the fan speed setting to provide a quieter operating sound Page ai eee eee en 16 SETTING THE 17 USING THE 1 HOUR OFF TIMER 19 TIPS F R ENERGY SAVING Uu nie u u u us 19 ADJUSTING THE AIRFLOW DIRECTION 20 OPERATION WITHOUT THE REMOTE CONTROLLER 21 CARE AND CLEANING 21 WIRED REMOTE CONTROLLER 23 TRO
7. NN Mi AMMESSA WW YN NNN N Min 10 25 cm Exhaust fan a Heat source NV NN NX NN Obstacle above Oo Min Min E 2 m D d L S q lt i Ground Min 4 10 cm Air intake Obstacle above 5 Min 2 D lt o S 8 Ground Min 6 15 cm Air intake V Cushion rubber 2 3 Baffle Plate for the Outdoor Unit CU KSxxNKUA models only It is recommended to use baffle plates for models CU KS18NKUA and CU KS24NKUA The baffle plates are not normally required for the other models When the outdoor unit is installed in a position exposed to strong wind such as seasonal winds with low air tem perature in winter baffle plates must be installed on the outdoor unit Fig 5f This unit is designed so that the fan of the outdoor unit runs at low speed when the air conditioner is operated at low outdoor air temperatures When the outdoor unit is exposed to strong wind the system pressure drops because of the freeze protector Install a pair of windbaffle plates at the front and back of the outdoor unit if it will be subject to strong wind during the winter Figs 5f 5g 5h 5i and 5j Air intake baffle Wind Back No air intake baffle required on this side Fig 5f Front Wind Air discharge baffle 1 Recommended dimensions of the
8. Qt Quiet mode Outdoor Hi dB A 51 Refrigerant Tubing Connections Refrigerant Narrow tube inch mm 1 4 6 35 Tube Diameter Wide tube inch mm o Unit Dimensions inch 11 23 32 x 41 15 16 x 8 5 8 26 3 8 x 34 21 32 x 11 7 32 Height Width x Depth mm 298 x 1 065 x 219 670 x 880 x 285 Package Dimensions inch 11 27 32 x 45 1 8 x 15 5 32 28 27 32 x 39 27 32 x 14 29 32 Height x Width x Depth mm 2 Weight Net Ibs kg E Shipping Ibs kg a 4 59 0 13 9 88 0 28 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 80 F DB 67 F WB Outdoor air temperature 95 F DB 75 F WB Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKUA 208V gt Total Capacity BTU h 17 500 4 000 to 17 500 kW 5 15 1 210 5 15 E Sensible Capacity BTU h E A Air Circulation Hi Me Lo ft min m3 h 524 890 441 749 377 641 e Running Amperes A o 77 12177 l Powerit O O W 1 500 25010 1 500 Power Factor 2 EER BTU h W Compressor Locked Rotor Amperes A Airflow Direction Indoor Horizontal Vertical RATOA 72 87 1 300 Operation Sound Indoor Hi Me Lo Qt dB A 42 38 30 28 Qt Quiet mode Outdoor Hi dB A 51 Refrigerant Tubing Connections Refrigerant Narrow tube inch mm 1 4 6 35 Tube Diameter Wide tube inch mm o Unit Dimensions inch 11 23 32 x 41 15 16 x 8 5 8 26 3 8 x 34
9. A Turn OFF the power before connecting or disconnecting the motor connectors B When performing voltage measurement at the outdoor controller connector for 3 in the table below the DC motor will trip and voltage output will stop approximately 10 seconds after operation is started For this reason to measure the voltage again first turn OFF the outdoor unit power then measure the voltage in Test Run mode Trouble symptom 1 The fan does not stop when the outdoor unit stops Outdoor unit controller trouble Trouble symptom 2 The fan motor does not rotate when the outdoor unit is operating Diagnostic procedure Disconnect the motor connectors and measure the voltage at the DC motor connectors on the outdoor unit controller 3 locations Measurement location Normal value 1 Vs Gnd Between pin 1 and pin 4 gi DC 230V or more Vm Gnd Between pin 1 and pin 4 2 Vcc Gnd Between pin 5 and pin 4 DC 14V or more 3 Vsp Gnd Between pin 7 and pin 4 After fluctuating 4 times between DC 1 7 to 6 1V 1 sec ON and DC 0 V 1 sec OFF the DC motor trips Diagnostic results All of the above measured values are normal Fan motor trouble Replace the motor Any one of the above measured values is not normal Outdoor unit controller trouble Replace the controller Reference DC motor connector pin arrangement CU KS18NKU CU KS18NKUA CU KS24NKU CU KS24NKUA Pin 1 Vs white Pin 1 Vm red Pin 2 Not
10. 11 8 Retro Fitting Existing Systems 11 8 1 Use of Existing Units e 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 e If replacing an older unit that used refrigerant R22 with a R410A unit do not use its existing tubing Instead completely new tubing must be used 65 APPENDIX A Operating Instructions CS KS18NKU CU KS18NKU CU KS18NKUA CS KS24NKU CU KS24NKU CU KS24NKUA 852 6 4181 210 00 1 A 1 Cl LLI Panasonic Operating Instructions Split System Air Conditioner Model No Indoor Units Outdoor Units CS KS18NKU CU KS18NKU CS KS24NKU CU KS18NKUA CU KS24NKU CU KS24NKUA This air conditioner uses the refrigerant R410A Before operating the unit read these operating instructions thoroughly and keep them for future reference 85264181210001 Panasonic Corporation 1006 Kadoma Kadoma City Osaka Japan CV6233187228 FEATURES This air conditioner is an inverter type unit that automatically adjusts capability as appropriate Details on these functions are provided below refer to these descriptions when using the air conditioner e Microprocessor Controlled Operation The interior compartment of the remote controller contains several features to facilitate automatic operation easy logically displayed for easy use e Simple One touch Remote
11. 4 REFRIGERANT FLOW DIAGRAM 4 1 Refrigerant Flow Diagram Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKU CU KS24NKU CS KS24NKU CU KS18NKUA CU KS24NKUA Indoor unit Outdoor unit x Wide tube E service Wide tube valve Accumulator Muffler Heat exchanger Heat exchanger N Electric t expansion u valve service Narrow tube valve l 6 35 mm Q ee Cooling cycle 1 O D 1 2 12 7mm CS CU KS18NKU CU KS18NKUA O D 5 8 15 88mm CS CU KS24NKU CU KS24NKUA Insulation of Refrigerant Tubing 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 Thickness Thickness proper insulation material The thickness of the insulation Min 5 16 8 mm Min 5 16 8 mm should be a min 5 16 8 mm After a tube has been insulated Narrow tube P Wide tube never try to bend it into a narrow CAUTION curve because can cause the tube to break or crack 25 5 PERFORMANCE DATA 5 1 Temperature Charts Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKU Cooling Characteristics RH 46 Indoor fan speed High fan 60Hz 230V 1 Low pressure performance chart psig MPaG este 1 04 1 T 90 0 6 Low pressu
12. Electrical performance values represent a combined indoor outdoor value 27 Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKU Cooling Characteristics RH 46 Indoor fan speed High fan 60Hz 230V 1 Low pressure performance chart psig MPaG Low pressure at wide tube service valv 0 5 68 77 86 95 104 20 25 30 35 40 Outdoor inlet air DB temp F C A NN te PT TE 8 86 95 6 20 25 30 35 40 Outdoor inlet air temp F C Operating current A 3 Indoor discharge air performance chart 53 6 12 50 0 10 A i x UHT T PTT 1 4 aa L rt l LL 46 4 8 ATI Indoor discharge air temperature F C 77 86 9 20 25 30 35 40 Outdoor inlet air DB temp F C NOTE e Check each performance value in test run mode Electrical performance values represent a combined indoor outdoor value 28 Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKUA Cooling Characteristics RH 46 Indoor fan speed High fan 60Hz 230V 1 Low pressure performance chart s LOB EEE TTT i quem H psig MPaG 5 68 77 86 20 is 10 5 0 5 10 18 20 25 30 85 40 Outdoor inlet air DB temp F C Low pressure at wide tube service valve 2 Operating current performance chart Operating current A 4 5 14 68 20 15 10 5 0 5 0 5 20 25 30 38 40 Outdoor inlet ai
13. gt Indoor Unit Outdoor Unit Complete Unit Fan Motor Compressor Performance at 208V Single phase 60Hz Rating conditions Running amp Power input 2 405 2 460 Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 35 DB Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKUA Cooling lt 230V gt Indoor Unit Outdoor Unit Fan Motor Compressor P Performance at 230V Single phase 60Hz Rating conditions Running amp Power input 2 405 2 460 Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 35 C DB Cooling lt 208V gt Indoor Unit Outdoor Unit Fan Motor Compressor P Performance at 208V Single phase 60Hz Rating conditions Running amp 08 55 Power input 2 405 2 460 Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 35 C DB 37 6 2 Electric Wiring Diagrams Indoor Unit CS KS18NKU CS KS24NKU To avoid electrical shock hazard be sure to AN WARNING disconnect power before checking servicing and or cleaning any electrical parts TERMINAL BASE EVAPORATOR Z CONNECTOR 1 2 3 4 5 FLAP MOTOR IND LAMP ASSY COIL THERMISTOR FAN MOTOR HA JEM A 4P WHT 8FA2 5251 1
14. just set the FAN SPEED selector button as desired 33 3 or 3 Fan Only STEP 2 MODE L FAN SPEED NIGHT SETBACK SOMME FLAP HIGH POWER STEP 1 STEP 3 If you want to circulate air without any temperature control follow these steps STEP 1 Press the MODE selector button to switch to the fan mode 5 STEP 2 Press the ON OFF operation button STEP 3 Press the FAN SPEED selector button to select the fan speed of your choice 99 9 or 13 OPERATION WITH THE REMOTE CONTROLLER CONTINUED 4 Night Setback Mode 14 Night Setback Mode is used for saving energy Press the NIGHT SETBACK button while unit is operating except FAN mode The mark appears in the display To release the night setback function press the NIGHT SETBACK button again Pressing the MODE selector button cancels Night Setback mode C FAN SPEED NIGHT SETBACK FLAP HIGH POWER In Cooling and DRY Mode 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 passed regardless of the indoor temperature when night setback was selected This enables you to save energy without sacrificing comfort This function is convenient when gentle cooling is needed Setting temperature ae Press the NIGHT SETBACK button OPERATIO
15. part of your job to install or service the system so it operates safely and efficiently For safe installation and trouble free operation you must Carefully read this instruction booklet before beginning e Follow each installation or repair step exactly as shown Observe all local state and national electrical codes e Pay close attention to all warning and caution notices given in this manual This symbol refers to a hazard or unsafe practice which can WARNING result in Severe personal injury or death This symbol refers to a hazard or unsafe practice which can result in personal injury or prod uct or property damage If Necessary Get Help These instructions are all you need for most installation sites and maintenance conditions If you require help for a special problem contact our sales service outlet or your certified dealer for additional instructions In Case of Improper Installation The manufacturer shall in no way be responsible for improp er installation or maintenance service including failure to follow the instructions in this document SPECIAL PRECAUTIONS WARNING When Wiring 9900900099090009999009090090099900009909090000909000090090990009090900909090000090900090090900090099009009900000900900090090000909090000000990009090999000099 ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH ONLY A QUALIFIED EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply powe
16. 16 2 2 2 Outdoor Unit Outdoor Unit CU KS18NKU Control PCB CB CU KS18NKU Control Circuit Fuse 250V 25A Compressor DC Twin Rotary Hermetic Compressor Model Nominal Output C 6RVN93HOM 1 050W Compressor Oil Amount Pints cc FV50S 0 74 350 Coil Resistance Ambient Temp 68 F 20 C Ohm Safety Device es Compressor Discharge Temp Control es es Operation cutoff control in abnormal ambient Temp es Overload Relay Model CS 7L115 Operation Temp Open 239 F 115 C Close 203 F 95 C Run Capacitor Micro Es VAC Crankcase Heater s Propeller Q ty Dia inch mm 1 D16 17 32 D420 Coil Resistance RED WHT 77 5 Ambient Temp 68 F 20 C WHT BLU 77 5 BLU RED 77 5 Type Internal Controller Over Current Protection Yes Run Capacitor Heat Exchanger Coil Fins per inch Face Area ft m External Finish Acrylic baked on enamel finish DATA SUBJECT TO CHANGE WITHOUT NOTICE Outdoor Unit CU KS24NKU Control PCB CB CU KS24NKU Control Circuit Fuse 250V 25A Compressor DC Twin Rotary Hermetic Compressor Model Nominal Output G8T265FU1JW 2 410W Compressor Oil Amount Pints cc FV50S 1 49 700 Coil Resistance Ambient Temp 77 F 25 C Ohm Safety Device Y es Compressor Discharge Temp Control es es Operation cutoff control in abnormal ambient Temp Overload Relay
17. Close Open use the hex wrench T Be sure to fully seat the wrench wrench before turning Fig 60b the valve Pump Down Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing any of the gas Pump down is used when the unit is to be moved or before servicing the refrigerant circuit Pump Down Procedure Be sure to carry out pump down with the unit in cooling mode 1 Connect the Lo side charging hose of the manifold valve to the service port on the wide tube service valve 26 Hose with push pin I V R 5 LS service port on the wide tube ser vice valve uses a Schrader core valve to access the refrigerant system Therefore be sure to use a hose con nector which has a push pin inside Fig 60a Service valve hI WH External diameter of service port R410A 5 16 Fig 60a PUSH Using a hex wrench turn the narrow tube service valve clockwise all the way to close the service valve Be sure to confirm that the wide tube service valve is fully open Press the operation button and start cooling oper ation When the low pressure gauge reading falls to 14 2 to 7 1 psi 1 to 0 5 kg em fully close the wide tube valve stem Then quickly stop the unit Disconnect all gauges and hoses and replace the valve caps as they were before Service Valve Connections
18. FAN SPEED NIGHT SETBACK FLAP HIGH POWER C TIMER CANCEL CLOCK SENSOR CAPE 12H4P24H ADR ACL ACL Reset button 7 2 Disconnecting and Connecting Positive Connector for Outdoor Unit One of the two types of connectors illustrated at left is used Their i 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 Always hold the cover to disconnect See illustration at left For the connector without the resin cover push the lock in the direction of 2 while pulling it off Pull the cover upward How to Connect In order to connect hold the resin cover of the connector and push it in Confirm the click sound for the inside lock When the cover is pulled upward the lock is released with the sequence of 1 and 2 43 8 FUNCTIONS 8 1 Operation Functions Emergency operation ll SENSOR DRY Emergency operation is available when the remote During DRY operation the system adjusts the room controller malfunctions has been lost or otherwise temperature and fan speed according to the conditions in the cannot be used room in order to maintain a comfortable room environment To operate the system press the OPERATION button SENSOR DRY operation which is also used as the receiver below the unit display DRY operation is as shown in the figure below Each time this
19. Floor level Table 3 Fig 3b Max Allowable Tubing Limit of Tubing Limit of Elevation Required Amount of Model Length at Shipment Length L Difference H Additional Refrigerant ft ft ft oz ft CS KS18NKU 25 100 50 0 27 CU KS24NKU CU KS24NKUA CS KS24NKU 33 50 0 27 If total tubing length becomes 25 to 100 ft Max or 33 to 132 or 100 ft Max charge additional refrigerant R410A by 0 27 oz ft No additional charge of compressor oil is necessary For more detailed charging information refer to the Technical amp Service Manual 5 2 2 Outdoor Unit AVOID heat sources exhaust fans etc Fig 4 e damp humid or uneven locations DO choose a place as cool as possible e choose a place that is well ventilated allow enough room around the unit for air intake exhaust and possible maintenance Fig 5a or 5b e provide a solid base level concrete pad concrete block 4 x 14 10 x 40 cm or 6 x 1 4 15 x 40 cm beams or equal a minimum of 4 10 cm or 6 15 cm above ground level to reduce humidity and protect the unit against possible water damage and decreased service life Fig 5c or 5d e install cushion rubber under unit s feet to reduce vibration and noise Fig 5e use lug bolts or equal to bolt down unit reducing vibration and noise e install in a location where no antenna of a television or radio exists within 10 3 m CU KS18NKU CU KS18NKU
20. Model CS 7L115 Operation Temp Open 239 F 115 C Close 203 F 95 C Run Capacitor Micro Es VAC Crankcase Heater 2 Propeller Q ty Dia inch mm 1 D18 1 8 D460 FNommalOuput Coil Resistance Ambient Temp 68 F 20 C Safety Device Type Internal Controller Over Current Protection Over Heat Protection Run Capacitor Heat Exchanger Coil Fins per inch Face Area ft m External Finish Acrylic baked on enamel finish DATA SUBJECT TO CHANGE WITHOUT NOTICE Outdoor Unit CU KS18NKUA Control PCB CB CU KS18NKUA Control Circuit Fuse 250V 25A Compressor DC Twin Rotary Hermetic Compressor Model Nominal Output C 6RVN93HOM 1 050W Compressor Oil Amount Pints cc FV50S 0 74 350 Coil Resistance Ambient Temp 68 F 20 C Ohm Safety Device es Compressor Discharge Temp Control es es Operation cutoff control in abnormal ambient Temp es Overload Relay Model CS 7L115 Operation Temp Open 239 F 115 C Close 203 F 95 C Run Capacitor Micro Es VAC Crankcase Heater s Propeller Q ty Dia inch mm 1 D16 17 32 D420 Coil Resistance RED WHT 77 5 Ambient Temp 68 F 20 C WHT BLU 77 5 BLU RED 77 5 Type Internal Controller Over Current Protection Yes Run Capacitor Heat Exchanger Coil Fins per inch Face Area ft m Ext
21. Shipping Ibs kg a 4 59 0 13 13 41 0 38 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 80 F DB 67 F WB Outdoor air temperature 95 F DB 75 F WB J 2 2 Major Component Specifications 2 2 1 Indoor Unit Indoor Unit CS KS18NKU Control PCB CB CS KS18NKU Control Circuit Fuse 250V 3A Q ty Dia and Length inch mm 1 D3 5 8 L33 9 32 D92 L845 Nominal Output W Coil Resistance Ohm Ambient Temp 68 F 20 C Yes Yes Safety Device Type Internal Controller Over Curent Protection Over Heat Protection E j Run Capacitor Micro Fi VAGI Flap Motor Stepping Motor Model MP24Z3 DC 12V Coil Resistance Ohm Each Pair of Terminal 400 7 Ambient Temp 77 F 25 C Heat Exchanger Coil DATA SUBJECT TO CHANGE WITHOUT NOTICE 15 Indoor Unit CS KS24NKU Control PCB CB CS KS24NKU Control Circuit Fuse 250V 3A Q ty Dia and Length inch mm 1 D3 5 8 L33 9 32 D92 L845 FNo ofPoes o S Nominal Output W Coil Resistance Ohm Ambient Temp 68 F 20 C Yes Yes Safety Device Type Internal Controller Over Curent Protection Over Heat Protection E j Run Capacitor Micro Fi VAGI Flap Motor i Modi Po MP24Z3 O Coil Resistance Ohm Each Pair of Terminal 400 7 Ambient Temp 77 F 25 C Heat Exchanger Coil DATA SUBJECT TO CHANGE WITHOUT NOTICE
22. Tools 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 refrigerant recovery unit for R410A e Do not reuse the recovered refrigerant since it will contain impurities 2 Replacing Compressor e Soon after removing seals of both discharge and suction tubes of the new compressor replace it quickly 3 Checking for sealing e Use nitrogen gas for the pressurized gas and never use a refrigerant other than R410A Also do not use oxygen or any flammable gas 4 Evacuation e Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption the valve will prevent the pump oil from flowing back e The equipment may be damaged if moisture remains in the tubing thus carry out the evacuation thoroughly e When using a vacuum pump with exhaust air volume more than 0 883 cu ft min and ultimate vacuum pressure rate of 50 micron Hg Standard time for evacuation 1 Recover refrigerant OK 2 Replace compressor OK 3 Check for sealing OK 4 Evacuation OK 5 Recharge Length of tubing Less than 33 ft 10 m More than 33 ft 10 m More than 10 minutes More than 15 minutes 62 5 Recharging e Be sure to charge the specified amount of refrigerant in liquid state u
23. WARNING e Be sure to comply with local codes on running the wire Disconnect ido dd from the indoor unit to the outdoor unit size of wire and wiring method etc rz i e Each wire must be firmly connected e No wire should be allowed to touch refrigerant tubing the compressor or any moving part WIRING SYSTEM DIAGRAM Terminal Single phase 230 208V 60HZ Power supply A IPSNM MT La e Toavoid the risk of electric shock each air conditioner F Grounding unit must be grounded line e For the installation of a grounding device please Fig 23 observe local electrical codes e Grounding is necessary especially for units using i inverter circuits in order to release charged electricitv Disconnect switch mav be required bv national and electrical noise caused bv high tension or local codes Otherwise electrical shock mav occur e Place a dedicated ground more than 7 2 m awav from other grounds and do not have it shared with other elec tric appliances Always comply with national and local code requirements e Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram The indoor unit draws its power from the outdoor unit e Donotrun wiring for antenna signal or power lines of television radio stereo telephone security system or intercom any closer than 3 4 1 m from the power cable and wires between the indoor and
24. What is the latest self diagnosis result Defect in de inter unit cable Condition E12 Defect in the indoor unit P C board 53 9 4 Trouble Diagnosis of Fan Motor 9 4 1 Indoor Fan Motor e This indoor 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 e To perform diagnosis operate the unit in cooling mode with indoor fan speed High Next make sure that the indoor unit receive the signals from the remote controller when the ON OFF operation button is pressed Important A Turn OFF the power before connecting or disconnecting the motor connectors B When performing voltage measurement at the indoor controller connector for 3 in the table below the DC motor will trip and voltage output will stop approximately 1 minute after operation is started For this reason to measure the voltage again turn OFF the unit once using the remote controller and then start the air conditioner again Trouble symptom 1 The fan does not stop when the unit stops Indoor unit controller trouble Trouble symptom 2 The fan motor does not rotate when the unit is operating Diagnostic procedure Disconnect the motor connectors and measure the voltage at the DC motor connectors on the indoor unit controller 3 locations Measurement location 1 Vm Gnd Between pin 1 and pin 3 DC 230 V or more 2 Vcc Gnd Betwe
25. a Temporary connection Screw in 3 5 turns by hand Fig 60c b To fasten the flare nuts apply specified torque as Table 9 and Fig 60d Torque wrench Table 9 Fig 60c Fig 60d Tube Dia Nut Tightening Torque 1 4 6 35 mm 21 32 17 mm Approx 120 160 Ibs in 140 180 kgf cm Be sure to tighten the 3 8 9 52 mm 7 8 22 mm Approx 300 360 Ibs in 340 420 kgf cm CAUTION flare nut ng the prescribed torque 1 2 12 70 mm 1 1 32 26 mm Approx 430 480 Ibs in 490 550 kgf cm If the nut is over 5 8 15 88 mm 1 5 32 29mm Approx 590 710 Ibs in 680 820 kgf cm tightened refrigerant leakage may occur 7 Remote Controller Installation Position The remote controller 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 controller 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 In the path of the air conditioner s airstream Where it may become extremely hot or cold Where it may be subject to electrical or magnetic interference Where there is an obstacle between the remote con troller and the air conditioner since a check signal is sent from the remote controller every 5 minutes 7 1 Mounting on a Wall Before mounting the remote
26. and select the desired mode For dehumidifying operation E 6 For cooling operation gt For fan only operation gt 99 STEP 2 start the air conditioner press the ON OFF operation button STEP 3 Press the TEMP setting buttons to change the temperature setting to the desired temperature Adjustable temperature range 30 C max or 86 F max 16 C min 60 F min STEP 4 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 20 To stop the air conditioner press the ON OFF operation button again 12 OPERATION WITH THE REMOTE CONTROLLER CONTINUED NOTE e Choose the best position in the room for the remote controller 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 controller there e This appliance has a built in 5 minute time delay circuit to ensure reliable operation When the operation button is pressed the compressor will start running within three minutes In the event of power failure the unit will stop EG 2 Adjusting the Fan Speed A Automatic fan speed Simply set the FAN SPEED selector button to the position This automatically sets the best fan speed for the room temperature B Manual fan speed If you want to adjust fan speed manually during operation
27. button is pressed the OPERATION lamp changes color to indicate the type of operation Select the Load desired type of operation COOL Vas w ooo 48 STOP COOL zone GREEN Lamp Off Ll The set temperature is 4 F 2 C below the detected room temperature in the case of cooling operation Conditions are monitored at all times when the room temperature is below 59 F 15 C The compressor operation frequency varies The indoor fan operates with 1 f fluctuation The compressor operates at a low operating frequency The indoor fan operates with 1 f fluctuation Monitoring operation takes place when the room temperature is below 59 F 15 C or more than 5 F 3 C below the set temperature When the monitoring range is entered the compressor stops and the indoor fan operates with 1 f fluctuation Men models only The Sensor Dry operation during the Low Ambient Cooling Mode outside air temperature 59 F 15 C or lower is as follows The compressor operates a cycle of 3 minutes ON and 6 minutes OFF repeatedly B PAM 0 control n order to further improve inverter performance control is switched between PWM control at low operation speeds and PAM control at high operation speeds making the most effective use of power 44 This function acts to raise the power but keeps the AC system in the same operating mode This function is set with the HIGH POWER button on the remote c
28. direct sunlight e nearbv heat sources that mav affect performance of the unit e areas where leakage of flammable gas mav be expected e places where large amounts of oil mist exist DO e select an appropriate position from which everv corner of the room can be uniformiv cooled High on a wall is best e select a location that will hold the weight of the unit e select a location where tubing and drain hose have the shortest run to the outside Fig 1 e allow room for operation and maintenance as well as unre stricted air flow around the unit Fig 2 e install the unit within the maximum elevation difference H above or below the outdoor unit and within a total tubing length L from the outdoor unit as detailed in Table 3 and Fig 3a e install the indoor unit more than 3 3 1 m awav from anv antenna or power lines or connecting wires used for television radio telephone securitv svstem or intercom Electrical noise from anv of these sources mav affect operation Indoor unit A Drain hose Outside drainage Fig 1 M Z Front View Fig 2 INDOOR Tubing length L UNIT Elevation difference H OUTDOOR UNIT Fig 3a For stable operation of the air conditioner do not dn Wall mounied tvpe Minimum hegi indoor units less than 5 from floor level 1 5 m from floor level 1 5 m Indoor unit EM Wall
29. electrical equipment or interior wiring regulation and make sure to use the exclusive circuit Insufficient capacity to the electric circuit or defective arrangement results may cause an electric shock or fire Make sure to replace any power cable or lead wire showing any signs of scratch or deterioration Failure to do so may cause an electric shock overheating or fire Make sure that there is no dust on or slack in the power plug and insert fully into the socket Dust or incomplete connections may cause an electric shock or fire Do not damage or process the power cord as it may cause an electric shock or fire For the wiring between the indoor unit and outdoor unit securely fix the specified cable onto the terminal plate Poorly fixed wiring may cause a heat or fire After connecting the wiring between the indoor unit and outdoor unit attach the terminal cover securely Incomplete attachment of the terminal cover may cause overheating or fire Prohibit Prohibit Prohibit Prohibit Prohibit elejere iep If refrigerant gas blows off during the work do not touch the refrigerant gas as it may cause frostbite S Prohibit If refrigerant gas leaks during the work ventilate the room If refrigerant gas catches fire harmful gas may be generated Do not mix any gas other than the specified refrigerant gas in the refrigerating cycle If air or other contaminants mix with the gas pressure will become extremely high in the refri
30. hold the remote controller QUIET button and 1 HR TIMER button Then press and hold the ACL reset button with a pointed object such as the tip of a pen After 5 seconds release ACL button first then release QUIET and 1 HR TIMER buttons oP 1 test run appears blinking in the remote controller clock display area 4 Each time the 1 HR TIMER button is pressed the display changes as shown below Press this button 2 times to change the display to oP 7 address setting Fig 3 w U w ime Test run mode S 3 Self diagnostic mode a ur 4 Address setting mode U BQ w 5 oP 7 has now been selected for address setting 6 Press the ON OFF operation button on the remote controller Fig Check that the beep signal received sound is heard from the second indoor unit approximately 5 times The sound you hear Is the signal that the remote controller address has been changed 7 Finally press the remote controller ACL reset button to cancel the blinking oP 7 display Fig 3 Changing of the second remote controller address is now completed 42 ACL button Fig 2 H FTI TO n BB il ma s wa n M P ra Foie A pms w 4m s A r lt EE ON OFF operation button TIMER button MODE
31. is convenient when gentle cooling is needed 2 F 1 C Setting temperature 2 F 1 e ls was Press the NIGHT 30 min 30min Time SETBACK button 8 2 Protective Functions ll Freeze prevention During COOL or DRY operation freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below 1 Freeze prevention operation is engaged when the temperature of the indoor heat exchanger is below 43 F 6 C 2 Restart after freeze prevention operation occurs when the temperature of the indoor heat exchanger reaches 46 F 8 C or above Indoor heat exchanger temperature F C Area Automatic capacity control When the temperature drops below Point A the operation frequency is reduced by a certain proportion Area Frequency increase is prohibited When the temperature reaches Point C or above freezing prevention is ended and control is the same as in the a area When the temperature drops to below 36 F 2 C continuously for 2 minutes or longer the compressor stops Once the freeze condition is detected the air conditioner will work less than the maximum frequency until it is turned off Mena models only The Freeze Prevention Control during the Low Ambient Cooling Mode outside air temperature 59 F 15 C or lower is as follows e The compressor stops when the temperature of indoor heat exchanger becomes less tha
32. is not flashing Press the Advance Return 4 The time can be set in 1 minute v button until PM 10 30 is increments Holding down the button displayed advances the time rapidly in 10 minute increments Press the CLOCK button again This completes the setting of the current time 2 How to set the OFF time Example To stop the air conditioner at 11 00 am 1 Press the OFF TIME setting The timer indication is displayed HZ button once and the present OFF time is shown AM 4 TANTES ri Press the Advance Return 4 The timer indication blinks v button until AM 11 00 is The time can be set in 10 minute displayed increments Holding down the button advances the time rapidly in 10 minute increments Wait a few seconds and then the The timer indication stops setting is complete blinking and the present time is displayed 17 SETTING THE TIMER CONTINUED 3 How to set the ON time Example To start operation at 7 10 am Fg nation 000 1 Press the ON TIME setting The timer indication is displayed stee button once and the present ON time is shown 1 10 4 n Press the Advance Return The timer indication blinks v button until AM 7 10 is The time can be set in 10 minute displayed increments Holding down the button advances the time rapidly in 10 minute increments Wait a few seconds and then The timer indication stops the setting is complete b
33. may become extremely hot or cold e Where it may be subject to electrical or magnetic noise e Where there is an obstacle between the remote controller and air conditioner since a check signal is sent from the remote controller every 5 minutes Mounting the Remote Before mounting the remote controller press the ON OFF operation button at the Controller 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 Remote Control Holder Mounting Screws 2 duos 5 32 x 5 8 4 x 16 mm s 3 included Set in 1 place e u e To prevent loss of the remote controller you can connect the remote controller to the holder by passing a string through the remote controller and attachment hole To take out the remote controller pull it forward When Holding the Remote When using the remote controller and during air conditioner operation the Controller transmitter on the remote controller should be pointed towards the receiver on the indoor unit e Make sure that there are no objects between the remote controller and receiver which could block the signal 11 OPERATION WITH THE REMOTE CONTROLLER 1 Operation STEP 1 FLAP HIGH POWER NOTE Check that the circuit breaker on the power panel is turned on Press the setting buttons as described below and change the settings as desired Press the MODE selector button
34. outdoor units Electrical noise may affect the operation 14 3 8 Wiring Instructions for Inter unit Connections 1 6 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 Grasp both ends of the air intake grille and remove it by opening towards the front and pulling towards you Remove the screw on the right side cover plate and open the cover Fig 25 Route the inter unit wiring from the back of the indoor unit and pull it toward the front for connec tion Fig 26a 26b Connect the inter unit wiring to the corresponding terminals on the terminal plate Fig 26a 26b while referring to the wiring diagram Be sure to secure the wiring with the provided clamp When closing the air intake grille press the bottom right and left corners and center Fig 27 Please refer to How to replace the grille on page 12 for installing the air intake grille Cover Terminal plate Inter unit wiring Lock nut Top of conduit connector Fig 26b 15 Loose wiring may cause the terminal to overheat or result in unit malfunction A fire hazard may also exist There fore be sure all wiring is tightly connected When connecting each power wire to the corresponding t
35. the indoor unit and then insert it all the way inside Fig 19a THEA RAR ARO PLY KAN r HHA b Press the bottom right and left corners and center of the air intake grille to attach it to the indoor unit Fig 19b NOTE Fig 18b Attach so that the round pins at the top right and left cor ners of the air intake grille are inserted into the grooves at the top right and left of the indoor unit 12 3 5 Shape the Indoor Side Tubing 1 Arrangement of tubing by direction Frame a Right or left tubing gt Cut out the corner of the right left frame with a hacksaw or the like Figs 20 and 21 Left tubing b Right rear or left rear tubing outlet In this case the corner of the frame need not be cut 2 To mount the indoor unit on the rear panel Fig 20 Hang the 2 mounting slots of the unit on the upper tabs of the rear panel Fig 22 3 6 Wiring Instructions Mk General precautions on wiring 1 Before wiring confirm the rated voltage of the unit as Nu a tubing shown on its nameplate then carry out the wiring 2 e closely following the wiring diagram SEC 2 Provide a power outlet to be used exclusively for each unit with a power supply disconnect and cir Fig 21 cuit breaker for overcurrent protection provided in the exclusive line 3 To prevent possible hazards due to insulation
36. too high and then perform the repair work Failure to do so may cause a burn Perform welding work in a place with good ventilation If the work is performed in a poorly ventilated area it might cause a lack of oxygen If the installation plate or attachment frame has deteriorated due to corrosion etc replace it Failure to do so may cause an injury due to the unit falling When the cleaning is to be performed make sure to turn off the power and pull out the plug Touching the fan that is rotating at high speed may result in an injury When the indoor unit is to be removed do not place it on an incline S Doing so may cause wet furniture because water left inside may trickle down Prohibit Do not hold the sharp end of the unit or the aluminum fins as it may cause an injury to your hand or finger S Prohibit After repairs make sure to measure the insulation resistance and confirm that the value is 1 Mohm or more Any insulation error may cause an electric shock After repairs make sure to check the drainage of the indoor unit Inappropriate drainage may cause wet furniture and floors due to water leakage 10 Table of Contents OPERATING RANGE SPECIFICATIONS Zale mmm 2 2 Major Component Specifications aw blu sia EUN 2 3 Other Component Specifications DIMENSIONAL DATA
37. used Pin 2 Not used Pin 3 Not used Pin 3 Not used Pin 4 Gnd black Pin 4 Gnd blue Pin 5 Vcc red Pin 5 Vcc brown Pin 6 FG blue Pin 6 PG white Pin 7 Vsp yellow Pin 7 Vsp orange Trouble symptom 3 Motor rotates for some time Several seconds but then quickly stops when the outdoor unit operates There is trouble in the system that provides feedback of motor rotation speed from the motor to the outdoor unit controller Trouble symptom 4 Fan motor rotation speed does not change during outdoor unit operation Trouble symptom 5 Fan motor rotation speed varies excessively during outdoor unit operation Remedy for symptom 3 to 5 It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble Therefore first replace the outdoor unit controller then if necessary replace the DC motor 55 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 Please pay attention to the points listed below 1 Noise malfunction This refers to the application of high frequency noise to the signal wires resu
38. wire Probe Insulation tester Fig 1 Terminal plate ele eile P Clip f Copper lt Insulation tube or tester metallic part E C Copper tube or metallic part O Insulation tester Fig 3 From fan motor compressor and other parts ar a Metallic Clip 2 9 Fa Insulation tester Fig 4 10 2 Checking Continuity of Fuse on PCB Ass y iku e Remove the PCB Ass y from the electrical component box Then pull out the fuse from the PCB AsS y Fig 5 e Check for continuity using a multimeter as shown in PCB Ass y Fig 6 9 e Fig 5 Fuse Fig 6 58 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 11 1 2 Components mixing proportions HFC32 50 125 50 11 1 3 Characteristics e Less toxic more chemically stable refrigerant e The composition of refrigerant R410A changes whether it is in a gaseous phase or liquid phase Thus when there is a refrigerant leak the basic performance of the air conditioner may be degraded because of a change in composition of the remaining refrigerant There
39. 0 Heating Capacity KW BTUh Cooling dB A 5 S Operation Operation Indoor H M L Hes 8 47 44 41 Heating Outdoor Hi Hi B A Operation Indoor H M L PEU Unit Dimensions HxWxD h 29 7 16x12 19 32 11 15 16x8 5 8 Indoor unit end kie inch mm 740x900x320 298x1 065x219 Net Weight Ibs kg 119 0 54 0 26 5 12 0 25 APPENDIX B INSTALLATION INSTRCTIONS CS KS18NKU CU KS18NKU CU KS18NKUA CS KS24NKU CU KS24NKU CU KS24NKUA 852 6 4190 576 00 0 A 2 INSTALLATION INSTRUCTIONS Split System Air Conditioner This air conditioner uses the refrigerant R410A Panasonic Contents External diameter of service port R410A 5 16 Page IMPORTANT Please Read Before Starting 2 Model Combinations 1 4 Combine indoor and outdoor units only as listed 1 1 Tools Required for Installation not supplied below 1 2 Accessories Supplied with Unit 1 3 Optional Copper Tubing Kit Model No 1 4 Type of Copper Tube and Insulation Material Outdoor Unit 1 5 Additional Materials Required for Installation CS KS18NKU CU KS18NKU 2 INSTALLATION SITE SELECTION 5 CU KS18NKUA s o an 2 Outdoor Uni CS KS24NKU CU KS24NKU 2 3 Baffle Plate for the Outdoor Unit CU KS24NKUA Sawer Source 3 HOW TO INSTALL THE INDOOR UNIT
40. 10 3 1 Remove the Rear Panel from the Unit 60 Hz single phase 230 208 V gt hake de 3 Install the Rear Panel on the Wall Remove the Grille to Install the Indoor Unit Shape the Indoor Side Tubing Wiring Instructions Hecommended Wire Length and Diameter Wiring Instructions for Inter unit Connections Mounting 0 Drain Hose G G Q CO C I OW TO INSTALL THE OUTDOOR UNIT 20 1 Wiring Instructions for the Outdoor Unit v J m FRIGERANT TUBING 21 Use of the Flaring Method Flaring Procedure with a Flare Tool Caution before Connecting Tubes Tightly Connecting Tubing between Indoor and Outdoor Units Insulation of Refrigerant Tubing Taping the Tubes Finishing the Installation QI Due aan ee 6 AIR PURGING 23 H Air Purging with a Vacuum Pump for Test Run H Basic Functions of the Service Valves E Pump Down H Service Valve Connections 7 REMOTE CONTROLLER INSTALLATION POSITION ull uuu uu u tU peus 27 7 1 Mounting on a Wall 8 ADDRESS SWITCH 28 8 1 Address Setting of the Remote Controller 85264190576000 2011 CV6233187204 IMPORTANT Please Read Before Starting This air conditioning system meets strict safety and operating standards As the installer or service person it is an important
41. 1000 2 38 Outdoor Unit CU KS18NKU CU KS18NKUA To avoid electrical shock hazard be sure to AN WARNING disconnect power before checking servicing and or cleaning any electrical parts REACTANCE BLK POWER RELAY E WHT 2P CONNECTO 25A INA CONTROLLER s lt z A LLI INDOOR UNIT YEL YEL I xx O LLI 2 z O Q OW WHT BLU COMPRESSOR THERMISTOR THERMISTOR Vw COIL THERMISTOR 7P CONNECTOR WHT HIGH PRESSURE SWITCH BLK on MAGNETIC COIL H 2P CONNECTOR BLK JJ j COMPRESSOR OVERLOAD RELAY FAN MOTOR MOTOR OLR WHT WHT ELEC SYSTEM ASSY WHT WHT 2P CONNECTOR RED 8FA2 5251 12000 2 39 Outdoor Unit CU KS24NKU To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts REACTANCE CONTROLLER TO INDOOR UNIT E L O LLI 2 2 Q A Co COMPRESSOR THERMISTOR OUT DOOR THERMISTOR THERMISTOR 7P CONNECTOR WHT HIGH PRESSURE V SWITCH U W 1 1 EL cp MAGNETIC COIL 2 2 BLK 2P CONNECTOR BLK COMPRESSOR OVERLOAD RELAY FAN MOTOR MOTOR OLR WHT WHT ELEC SYSTEM ASSY WHT WHT 2P CONNECTOR RED 8FA2 5251 12800 2 40 Outdoor Unit CU KS24NKUA To avo
42. 2 50 68 86 104 122 140 158 176 194 Mm 0 10 20 30 40 50 60 70 80 90 Temperature F C 5 Temperature F C 50 59 68 77 86 95 104 10 15 20 25 30 35 40 e Outdoor air temp sensor Model TKS295B Outdoor heat exchanger sensor Model TKS292B 40 ot hy 30 NLLL LLLI sss ot NIII sss op DRILL L su 14 23 32 41 50 59 68 20 15 10 5 0 S 10 15 20 Temperature F C Resistance k ohm 21 3 DIMENSIONAL DATA CS KS18NKU CS KS24NKU Indoor Unit 88 GL 8 G ElP NMMNSLSM S90 OZ ZL L CIP TEL 8L c ec elp esou cCE E cl 9L G L L ce Sc ce Sc 1 N W G N N Unit inch mm 852 0 0010 216 00 0 22 Outdoor Unit CU KS18NKU CU KS18NKUA 23 15 16 5 11 32 1 3 8 Wide tube service valve dia 1 2 12 70 Narrow tube service valve dia 1 4 6 35 34 21 32 880 KN IA Ti ee ec mail EO OI 5 23 32 Unit inch mm 852 0 0010 133 00 0 23 Outdoor Unit CU KS24NKU CU KS24NKUA 23 15 16 5 11 32 11 17 32 15 32 1 3 8 12 19 32 320 13 19 32 14 17 32 Narrow tube service valve dia 1 4 6 35 35 7 16 900 2 15 16 Wide tube service valve dia 5 8 15 88 5 29 32 Unit inch mm 852 0 0010 119 00 0 24
43. 2 x 45 1 8 x 15 5 32 34 3 16 x 41 11 32 x 16 21 32 Height x Width x Depth mm 2 Weight Net Ibs kg E Shipping Ibs kg a 4 59 0 13 13 41 0 38 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 80 F DB 67 F WB Outdoor air temperature 95 F DB 75 F WB wW Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKUA lt 208V gt Total Capacity BTU h 24 200 4 000 to 24 200 kW 71 121074 E Sensible Capacity BTU n 5 Air Circulation Hi Me Lo ft min m h 659 1 120 571 970 494 839 Moisture Removal High Pints h 4 89 Available Voltage Range V 187 to 253 Running Amperes A 12 1 1 3 to 12 1 Power Input W 2 460 280 to 2 460 e z Power Factor C J J J 5 LEER BTUNWW 1 1 9398 _ 9 Compressor Locked Rotor Amperes A Airflow Direction Indoor Horizontal Vertical FA 10A 7 4 30 1 950 Operation Sound Indoor Hi Me Lo Qt dB A 47 44 41 30 Qt Quiet mode Outdoor Hi dB A 55 Refrigerant Tubing Connections Refrigerant Narrow tube inch mm 1 4 6 35 Tube Diameter Wide tube inch mm o Unit Dimensions inch f 11 23 32 x 41 15 16 x 8 5 8 29 1 8 x 35 7 16 x 12 19 32 Height x Width x Depth mm 298 x 1 065 x 219 740 x 900 x 320 Package Dimensions inch 11 27 32 x 45 1 8 x 15 5 32 34 3 16 x 41 11 32 x 16 21 32 Height x Width x Depth mm 2 Weight Net Ibs kg E
44. 21 32 x 11 7 32 Height Width x Depth mm 298 x 1 065 x 219 670 x 880 x 285 Package Dimensions inch 11 27 32 x 45 1 8 x 15 5 32 28 27 32 x 39 27 32 x 14 29 32 Height x Width x Depth mm 2 Weight Net Ibs kg E Shipping Ibs kg a 4 59 0 13 9 88 0 28 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 80 F DB 67 F WB Outdoor air temperature 95 F DB 75 F WB N Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKUA lt 230V gt Total Capacity BTU h 24 200 4 000 to 24 200 kW 71 121074 E Sensible Capacity BTU n 5 Air Circulation Hi Me Lo ft min m h 659 1 120 571 970 494 839 Moisture Removal High Pints h 4 89 Available Voltage Range V 187 to 253 Running Amperes A 10 8 1 3to 10 8 Power Input W 2 460 280 to 2 460 e z Power Factor C 0 0 0 0 0 0 99 5 5 0 0 5 LEER BTU WW BB Compressor Locked Rotor Amperes A Airflow Direction Indoor Horizontal Vertical RATOA 7 4 30 1 950 Operation Sound Indoor Hi Me Lo Qt dB A 47 44 41 30 Qt Quiet mode Outdoor Hi dB A 55 Refrigerant Tubing Connections Refrigerant Narrow tube inch mm 1 4 6 35 Tube Diameter Wide tube inch mm o Unit Dimensions inch 11 23 32 x 41 15 16 x 8 5 8 29 1 8 x 35 7 16 x 12 19 32 Height Width x Depth mm 298 x 1 065 x 219 740 x 900 x 320 Package Dimensions inch f 11 27 3
45. 3 TROUBLESHOOTING BEFORE CALLING FOR SERVICE 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 Air conditioner does not run at all 1 Power failure 2 Leakage circuit breaker tripped 3 Line voltage is too low 4 Batteries in remote controller have run down 1 Restore power 2 Contact service center 3 Consult your electrician or dealer 4 Replace batteries OPERATION lamp blinks and air Trouble in system Contact service center conditioner does not operate Compressor runs but soon stops Obstruction in front of condenser coil Remove obstruction Outdoor Unit 1 Dirty or clogged air filter Poor cooling performance 2 Heat source or many people in room 3 Doors and or windows are open 4 Obstacle near air intake or air discharge port 5 Thermostat is set too high for cooling Clicking sound is heard from the air conditioner In cooling operation any plastic parts may shrink due to a sudden temperature change In this event a clicking sound may occur OPERATION lamp lights but outdoor unit will not run The use of cellular phones near the air conditioner may cause disturbance to its normal operation OPERATING RANGE The air conditioner is operable within the temperature ranges as listed below For Cooling Only Models CU KS18NKU CU KS24NKU 1
46. 4 turn Narrow tube Ap Hex wrench a Wide tube E SU eas Vacuum hose to manifold valve Fig 58 How to Test Run the Air Conditioner After turning on the power of 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 QUIET button and the 1HR TIMER button b Then press and hold the ACL Reset button with a pointed object such as the tip of a pen After 5 sec onds release the ACL button first c Then release the QUIET and 1HR TIMER buttons d appears and oP 1 blinking in the remote con troller clock display area Fig 59b QUIET button 2 Start Cooling mode test run by pressing the ON OFF operation button of the remote controller Fig 59a This starts the fan producing uncooled forced air with the 3 indicator lamps OPERATION lamp TIMER lamp and QUIET lamp on the main unit blinking Fig 59c After 3 minutes the system shifts into cooling opera tion and cool air will start to be felt Cooling mode test run is unaffected by the room temperature 3 Press the ON OFF operation button of the remote con troller again to stop the test run Fig 59a 4 Finally press the ACL Reset button of the remote con troller to release it from Test Run mode to return to nor mal mode Fig 59a c and oP 1 will disappear from the remote
47. 6 7 84 28 9 88 31 1 63 2 67 A 71 T 76 24 4 80 26 7 84 28 9 88 31 1 Total Cooling Capacity BTU h SHC Sensible Heat Capacity BTU h NOTE 1 Above data does not take Freeze Prevention Protection during cooling operation into account For this reason the value may vary from the actual cooling characteristics 2 Above data represents the value when the operation frequency of a compressor is fixed 33 5 4 Air Throw Distance Charts Indoor Unit CS KS18NKU Room airtemp 80 F 26 7 C 2 Fan speed High Horizontal distance ft gs ST Ze mB 5 S o gt A99 G N xo 10 lt gt 15 Flap angle 0 Flap angle 30 Axis air velocity 0 Axis air velocity 30 34 Indoor Unit Axis air velocity ft sec Vertical distance ft CS KS24NKU Room air temp 80 F 26 7 C Fan speed High Horizontal distance ft 19 20 25 30 Flap angle O Flap angle 30 35 Axis air velocity 0 Axis air velocity 30 6 ELECTRICAL DATA 6 1 Electrical Characteristics Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKU Cooling lt 230V gt Indoor Unit Outdoor Unit Gomes Fan Motor Compressor P Performance at 230V Single phase 60Hz Rating conditions Running amp Power input 1 468 1 500 Rating conditions In
48. A Anchor bolts 4 pcs IN MAN M WA A ili NN Ml IN N Mill NAN N M ANN SQQ SR SISSE TITTI CUI WAN i Air intake TS WAS AN AN ON AN NAN NIN N LS A N Concrete or equal Ki E ts SS SS SS Sx lt A Fig 5c CU KS24NKU CU KS24NKUA Anchor bolts 4 pcs Y INN IN VAN A JA NN N AN NN WW Way NS N ii NY Ml WAN NY MI NANI Air intake Concrete or equal 6 jk d 4 AN NW WWWWWIWWWWW amp N W N IN IN SUI NNN NN PS ENS XI ts gt gt N N lt L Min 4 10 cm NNN Min 6 15 cm NO a Za Za Hot air 2 Outdoor unit Fig 4 CU KS18NKU CU KS18NKUA Air intake Min 4 10 cm Valve side Min 2 5 cm Air discharge Min 1 4 40 Fig 5a CU KS24NKU CU KS24NKUA Air intake Min 6 15cm Valve side Min 10 25 cm 7 DUD Air discharge Min m 4 1 8 50 cm Fig 5b IN AW AW SA SQ NN A N NO N NIN IN WW NW N ANNI ANN Ml N Mill AN N A NN Nim A ANN li N WW WW NNN
49. AN mode The air conditioner reduces the humidity in the room se The air conditioner makes the room cooler 98 The air conditioner works only as a circulation fan The air conditioner automatically decides the fan speeds ee High fan speed Medium fan speed ee Low fan speed For details see 4 Night Setback Mode When you press this button in the DRY or COOL mode the C9 mark appears in the display and the remote controller will automatically adjust the set temperature to save energy Press this button either to select the setting of the airflow direction to the auto flap in each mode or one of the six possible positions manually or to select the sweep function which moves the flap up and down automatically Auto flap setting If selected in a cooling or dry operation the flap is set at position 7 in the following chart The airflow direction can be set manually six positions The flap moves up and down automatically When you press the FLAP button the air flow direction will be changed one by one as follows 1 2 3 4 5 6 7 8 O W 9 c tS No oM SWEEP If this button is pressed during DRY COOL or FAN operation the unit operates at maximum output for 30 minutes regardless of the desired temperature The fan speed is 1 step above High No display The timer does not operate The air conditioner starts at the set time The air conditioner stops at th
50. Clean air filter to improve airflow 2 Eliminate heat source if possible 3 Shut them to keep the heat out 4 Remove it to ensure good airflow 5 Set the temperature lower This is normal and the sound will soon disappear 1 Turn off the power then restart the air conditioner after a while 2 Consult your dealer Temperature Indoor air temperature Outdoor air temperature COOLING Max Min For Low Ambient Cooling Models CU KS18NKUA CU KS24NKUA 95 F DB 71 F WB 115 F DB 67 F DB 57 F WB 67 F DB Temperature Indoor air temperature Outdoor air temperature COOLING Max Min 24 95 F DB 71 F WB 115 F DB 67 F DB 57 F WB F DB SPECIFICATIONS Model No Indoor Unit CU KS18NKU CU KS18NKUA CS KS18NKU Power Source Single phase 208 230 V 60 Hz Cooling Capacity 5 15 1 20 5 15 BTU h 17 500 4 000 17 500 Heating Capacity x kw 7 BTUh Cooling dB A 5 S Operation Operation Indoor H M L f SL 42 38 30 sound Heating Outdoor Hi B A Operation Indoor H M L en Unit Dimensions HxWxD h 26 21 32x11 7 32 11 15 16x8 5 8 Indoor unit iude Ai inch mm 670x880x285 298x1 065x219 Net Weight Ibs kg 90 4 41 0 26 5 12 0 Model No Outdoor Unit Indoor Unit CU KS24NKU CU KS24NKUA CS KS24NKU Power Source Single phase 208 230 V 60 Hz Cooling Capacity 74011207101 BTU h 24 200 4 000 24 20
51. Controller The remote controller has several features to facilitate automatic operation e 24 Hour ON or OFF Timer This timer can be set to automatically turn the unit on or off at any time within a 24 hour period e 1 Hour OFF Timer This timer can be set to automatically turn off the unit at any time after one hour e Night Setback This function saves energy by controlling operation to provide a quieter operating sound than normal e Automatic and 3 step Fan Speed Auto High Medium Low CONTENTS Page FeO c ce see ose unas 2 PRODUCT INFORMATION 2 SAFETY PRECAUTIONS uu uu u u km b e a u 2 INSTALLATION LOCATION 3 ELECTRICAL REQUIREMENTS 3 SAFETY INSTRUCTIONS 3 NAMES OF PARIS 5 USING THE REMOTE CONTROLLER 10 OPERATION WITH THE REMOTE CONTROLLER 12 1 Operation 12 2 Adjusting the Fan 13 SN Only uu oicecciceearesvaiencessuessccceineesstodesencacectniecote 13 4 Night Setback 14 9 QUIET Uc cT 15 6 HIGH POWER Mode 15 PRODUCT INFORMATION
52. E 1 2 1 ELECTRIC EXPANSION VALVE FAILURE 2 CHOKED CAPILLARY TUBE ORG PREVENTION 3 INSUFFICIENT GAS 4 CONTINUOUS OVERLOAD OPERATION 5 O D FAN NOT OPERATING 6 O D PCB FAILURE I 3 Lt 1 FAN MOTOR FAILURE 2 CONNECTOR CONTACT FAILURE I D FAN OPERATION TROUBLE 3 I D PCB FAILURE 1 x V LE Li LEE ete jj jj x UCET Ki 48 2 If the self diagnostics function fails to operate Check the indoor unit Is the fuse blown Normal No indicators illuminate and the indoor fan does not rotate Check the power voltage Blown Replace the circuit board or the fuse Replace the controller 49 9 3 Checking the Indoor and Outdoor Units 1 Checking the indoor unit e em Check tems unit operation Use the remote controller to operate the e The rated voltage must be present between inter unit wirings 1 and 2 unit in TEST run mode To determine e Connect a 5 k ohm resistor between inter unit wirings 2 and 3 When the whether the mode is currently in voltage at both ends is measured approximately 12 to 15V DC must TEST run mode check the 4 indicator be output and the multimeter pointer must bounce once every 8 lamps on the unit If all 4 are blinking seconds the current mode is TEST run Or instead of measuring the voltage you can insert an LED jig and check that the LED flickers once every 8 seconds e If there are no problems with the
53. Fig 5 1 Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit 2 Perform the self diagnosis five seconds after the operation start Condition E12 Defect or connection error What is the latest self diagnosis result in the inter unit cable Condition E01 Defect in the indoor unit P C board 52 3 2 Condition E12 Troubleshooting Serial Communication Outdoor Unit Turn off the power and wait until the power lamp LED of the outdoor unit controller is turned OFF Disconnect the cable from the terminal 3 on the Outdoor unit terminal strip Fig 6 Indoor Unit Fig 6 Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit Perform the self diagnosis five seconds after the operation Start Condition E01 What is the latest self diagnosis result y Defect in the outdoor unit P C board Condition E12 Outdoor Turn off the power and wait until the power lamp LED of the outdoor unit controller is turned OFF Disconnect the cable from the terminal 3 on the indoor unit terminal strip Fig 7 Indoor Unit Fig 7 Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit Perform the self diagnosis five seconds after the operation start Condition E01
54. GOGO OOOO AIR CONDITIONER ON OFF operation button TIMER button FAN SPEED NIGHT SETBACK FLAP HIGH POWER TIMER Gb GD A A 7 w gt CANCEL chock O SENSOR 12H 4 24H O ADR O ACL ACL FFU Dey HG Fl DEG Reset button 1 Self diagnostics Lamps INDOOR UNIT i1 1 OPERATION lamp irr 2 TIMER lamp FH 3 QUIET lamp N 14 OPERATION button REMOTE CONTROL receiver e Since the indications cover various units the corresponding parts listed below may not be present in some models INDICATION ON INDOOR UNIT X OFF TE BLINKING T ON QUIET TIMER OPERATION 3 CODE DIAGNOSIS CONTENTS POSSIBLE MALFUNCTION ES ROOM TEMP SENSOR TROUBLE 1 OPEN OR SHORT CIRCUIT IN SENSOR 2 POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT rrr V SEE e g TERMINAL PRESS FIT LOCATION FOR HUMIDITV SENSOR THIS REPRESENTS SHORT CIRCUIT DETECTION ONLY ors HUMIDITY SENSOR TROUBLE 3 I D PCB FAILURE I D INDOOR 4 WAY VALVE SWITCHING TROUBLE 1 4 WAY VALVE FAILURE HEAT PUMP MODEL ONLY ZERO CROSS TROUBLE 2 O D PCB FAILURE FP GAS LOSS PREVENTION 1 SERVICE VALVE NOT OPENED 2 INSUFFICIENT GAS DC COMPRESSOR DRIVE ee E10 e UTT OUDE 0 PHASE 2 OIDPOBFALURE 0 PHASE 2 OIDPOBFALURE PHASE 2 O D PCB FAILURE 1 FAN MOTOR FAILURE 2 CONNECTOR CONTACT FAILURE O D DC FAN OPERATION TROUBLE 3 0 D PCB FAI
55. LURE xy Ew OID SYSTEM COMM FAILURE _ 1 MIS WIRING 2 BLOWN FUSE 8 POWER RELAY FAILURE OPEN PHASE O D FREEZING 4 O D PCB FAILURE 5 COMPRESSOR FAILURE FAN SYSTEM FAILURE 2 INSUFFICIENT GAS xt ef es FREEZING PREVENTION OPERATION l 8FA2 5251 11100 2 et X X pt COMPRESSOR TEMP SENSOR TROUBLE 1 OPEN OR SHORT CIRCUIT IN SENSOR 2 POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT Ee oe ane TERMINAL PRESS FIT LOCATION 3 O D PCB FAILURE O D OUTDOOR x O D AIR TEMP SENSOR TROUBLE O D CURRENT SENSOR ERROR O D PCB FAILURE k MIS WIRING 2 AC POWER FAILURE 3 BLOWN FUSE POWER RELAY FAILURE 5 I D OR O D PCB FAILURE O D FAN MOTOR FAILURE 7 REACTOR FAILURE HIGH PRESSURE SW FAILURE 9 OLR FAILURE 10 MAGNETIC COIL FAILURE HIC OR POWER TR FAILURE 2 O D FAN NOT OPERATING INSTANTANEOUS POWER STOPPAGE 4 SERVICE VALVE NOT OPENED I D O D COMMUNICATION TROUBLE SERIAL COMMUNICATION TROUBLE x ie HIC CIRCUIT TROUBLE POWER TR CIRCUIT TROUBLE O D FAN BLOCKED 6 CONTINUOUS OVERLOAD OPERATION COMPRESSOR FAILURE 8 O D PCB FAILURE O D UNIT EXTERNAL ROM TROUBLE 1 EXTERNAL ROM DATA FAILURE 2 O D PCB FAILURE 1 INSTANTANEOUS POWER STOPPAGE 2 HIC OR POWER TR FAILURE CURRENT PEAK CUT 3 O D PCB FAILURE mnm X PAM CIRCUIT TROUBLE O D PCB FAILURE x ACTIVE CIRCUIT TROUBLE 2 O D POWER VOLTAGE TROUBL
56. N WITH THE REMOTE CONTROLLER CONTINUED 5 QUIET Mode QUIET Mode is used to reduce the fan sound of the indoor unit Press the QUIET button The fed mark appears in the display To cancel press QUIET button again ON OFF O QUIET e n QUIET Mode the fan rotates at a slower speed than the fan speed setting e Ifthe unit is already operating with very low airflow the fan sound may not change even if the QUIET button is pressed HIGH POWER mode can be used to increase the output of the indoor unit for all operation modes Press the HIGH POWER button while unit is operating The Z mark appears in the display To cancel press HIGH POWER button again ON 1 OFF O e When the HIGH POWER button is pressed the unit operates at maximum output for 30 minutes regardless of the desired temperature The fan speed is 1 step above High QUIET Mode and HIGH POWER Mode cannot be used at the same time QUIET NOTE Pressing the MODE selector button cancels HIGH POWER mode e Depending on the operating conditions the fan speed may be increased by a small amount only MODE FAN SPEED NIGHT SETBACK FLAP HIGH POWER 15 DRY Operation How it works e Cooling Operation Power failure during operation Clicking Sound Clicking sound is heard from the air conditioner Remote Controller 16 SPECIAL REMARKS Once the room temperature reaches the l
57. R TIMER button Then press and hold the ACL reset button with a pointed object such as the tip of a pen After 5 seconds release ACL button first then release QUIET and 1 HR TIMER buttons 1 test run appears blinking in the remote controller clock display area Step 2 Next press the 1 HR TIMER button once to change the display from oP 1 to oP 3 self diagnostics The display continues to blink Step 3 Finally press the ON OFF button to engage self diagnostics mode e The self diagnostics function utilizes the 3 indicator lamps on the main unit in combinations of ON lamps blinking lamps and OFF lamps to report the existence of sensor trouble or a protective operation The lamps blink or remain ON for 5 seconds then turn OFF for 2 seconds Self diagnostics is completed when the buzzer sounds 3 short beeps e A maximum of 3 self diagnostics reports are displayed for 5 seconds each beginning with the most recent report Following this display the lamps turn OFF In order to view the self diagnostics results again press the ON OFF button again e The 3 lamps remain OFF if no trouble has occurred lt IMPORTANT gt After self diagnostics is completed be sure to press the ACL reset button to return to normal mode The air conditioner will not operate if this is not done 47 lt Clock display gt lestrun mode L Q Self diagnostics mode X af
58. TECHNICAL amp SERVICE MANUAL Panasonic CS KS18NKU CU KS18NKU CU KS18NKUA CS KS24NKU CU KS24NKU CU KS24NKUA DC INVERTER SPLIT SYSTEM AIR CONDITIONER CS KS18NKU 1 852 360 90 CU KS18NKU 1 852 361 18 CS KS24NKU 1 852 360 91 CU KS18NKUA 1 852 361 19 CU KS24NKU 185236121 CU KS24NKUA 185236122 CS KS18NKU CS KS24NKU CU KS18NKU CU KS18NKUA IMPORTANT These air conditioners employ new refrigerant R410A Pay special attention when servicing the unit n410A CU KS24NKU lt CU KS24NKUA REFERENCE NO SM700872 N SAFETY PRECAUTIONS Before doing repair work please read the A SAFETY PRECAUTIONS carefully and fully understand them The precautionary items here are divided into N Warning and Caution items Items in particular which may cause death or serious injury to the service personnel if the work is not performed correctly are included in the A Warning table However even precautionary items identified as Caution also have the potential for serious consequences if not performed correctly Important safety precautions are described for all items in both categories Be sure to carefully follow all of them Symbol Indication AN This symbol indicates items to which we need to pay attention In this triangle a definite precautionary item is described Q This symbol indicates the item to be prohibited In or close to this circle a prohibited item is describ
59. Temp Outdoor Air Intake Temp Cooling 2 SPECIFICATIONS 2 1 Unit Specifications Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKU lt 230V gt Total Capacity BTU h 17 500 4 000 to 17 500 kW 5 15 1 210 5 15 E Sensible Capacity BTU h E Air Circulation Hi Me Lo ft min m h 524 890 441 749 377 641 Rumning Amperes af 70 12170 S Powrlpu w w 1 500 25010 1 500 Power Factor 5 EER BTU h W 9 Compressor Locked Rotor Amperes A Airflow Direction Indoor Horizontal Vertical RATOA 72 87 1 300 Operation Sound Indoor Hi Me Lo Qt dB A 42 38 30 28 Qt Quiet mode Outdoor Hi dB A 51 Refrigerant Tubing Connections Refrigerant Narrow tube inch mm 1 4 6 35 Tube Diameter Wide tube inch mm o Unit Dimensions inch 11 23 32 x 41 15 16 x 8 5 8 26 3 8 x 34 21 32 x 11 7 32 Height x Width x Depth mm 298 x 1 065 x 219 670 x 880 x 285 Package Dimensions inch 11 27 32 x 45 1 8 x 15 5 32 28 27 32 x 39 27 32 x 14 29 32 Height x Width x Depth mm Weight Net Ibs kg E Shipping Ibs kg a 4 59 0 13 9 88 0 28 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 80 F DB 67 F WB Outdoor air temperature 95 F DB 75 F WB Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKU lt 208V gt Total Capacity BTU h 17 500 4 000 to 17 500
60. UBLESHOOTING BEFORE CALLING FOR SERVICE 24 OPERATING RANGEFE 24 SPEGIFICATION S ei 25 SAFETY PRECAUTIONS The following symbols used in this manual alert you to potentially dangerous conditions to users service personnel or the appliance WARNING This symbol refers to a hazard or N unsafe practice which can result in severe personal injurv or death This svmbol refers to a hazard or N unsafe practice which can result in personal injurv or product or propertv damage 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 Do not install this air conditioner where there are fumes or flammable WARNING gases or in an extremely humid space such as a greenhouse Do not install the air conditioner where excessively high heat generating objects are placed Avoid To protect the air conditioner from heavy corrosion avoid installing the outdoor unit where salty sea water can splash directly onto it or in sulphurous air near a spa ELECTRICAL REQUIREMENTS 1 All wiring must conform to the local electrical codes Consult your dealer or a qua
61. a clean soft cloth If these parts are stained use a clean cloth moistened with a mild liquid detergent When cleaning the grille be careful not to force the vanes out of place 1 Never use solvents or harsh chemicals when cleaning the indoor unit N CAUTION Do not wipe the plastic casing using verv hot water 2 Some metal edges and the fins are sharp and mav cause injurv if handled improperly be especially careful when you clean these parts 3 The internal coil and other components of the outdoor unit must be cleaned every year Consult your dealer or service center 21 CARE AND CLEANING CONTINUED Filter The filter behind the air intake grille should be checked and cleaned at least once every two weeks How to remove the filter 1 Grasp both ends of the air Air intake grille intake grille and remove it by opening towards the front and pulling towards you 2 Remove the filter attached to the rear of the air intake grille Cleaning Use a vacuum cleaner to remove light dust If there is sticky dust on the filter wash the filter in lukewarm soapy water rinse it in clean water and dry it How to replace the filter 1 With the FRONT mark of the filter at the front align the two indentions near the mark with the hooks at the rear of the air intake grille and then mount the filter filter 2 Allow the edge of the air intake grille to slide into the top of the Groove indoor unit and then i
62. above then check the outdoor unit e For the Test run procedure refer to the Appendix Installation Instructions 2 Checking the outdoor unit No Como Check items unit operation 1 Apply the rated voltage between outdoor e The control panel LED red must illuminate unit terminals L and N 2 Short circuit the outdoor unit COM terminal e The compressor and fan motor must all turn on to the T RUN terminal e f there are no problems with the above then check the indoor unit e Using the TEST T RUN terminals TEST T RUN terminals T RUN Test run compressor and fan motor turn ON TEST MV Compresses time to 1 60th accelerates operation by 60 times faster than normal 50 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 for the self diagnostics procedure Quiet Timer Operation gt 3 Off 3 2 1 iK Blinking x Mumninated lt Before the Operation gt For terminal strip short circuit work or inter unit wiring removal turn off the power to N WARNING avoid an electric shock Release the terminal strip short circuit after the completion of self diagnostics Do n
63. acuum pump The operation time for the vacu um pump varies with tubing length and the capacity of the pump The following table shows the amount of time for evacuation Table 7 Required time for evacuation when 100 liter h vacuum pump is used If tubing length is less than 33 ft 10 m If tubing length is more than 33 ft 10 m 10 min or more 15 min or more 23 Indoor unit Outdoor unit Manifold valve Exclusively for R410A Pressure gauge Charging hose Exclusively for R410A Vacuum pump adapter Exclusively for R410A with reverse flow prevention Vacuum pump Fig 57 To prevent other refrigerants from being mistakenly charged to units which use R410A the size of the charge port on the service valve is different from the one for other refrigerant types For servicing such as recharging the specified charging hose manifold and vacuum pump adapter with reverse flow prevention for R410A must be used The required time in Table 7 is calculated based on the assumption that the ideal or target vacuum condition is around 10 mmHg abs 5 With the vacuum pump still running close the Lo knob of the manifold valve Then stop the vacuum pump 6 With the hex wrench turn the valve stem on the narrow tube service valve counter clockwise by 90 degrees 1 4 turn for 10 seconds and then turn the stem clockwise to close it aga
64. al strip Fig 2 3 Turn ON the power Yes A B Continued to the next page A Continued to the next page B 51 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 Yes Defect or connection error Defect in the indoor unit in the inter unit cable P C board Turn OFF the power and wait until the power lamp LED Outdoor Unit of the outdoor unit controller is turned OFF Short circuit between the terminals 2 and 3 on the outdoor unit terminal strip Fig 3 Indoor Unit Turn ON the power and operate the system using the remote controller or the operation button on the indoor unit Fig 3 Perform the self diagnosis five seconds after the operation start Condition E12 Defect in the outdoor unit E What is the latest self diagnosis result 4 PG board Condition E01 Outdoor Unit Outdoor Unit Turn off the power and wait until the power lamp LED of the outdoor unit controller is turned OFF Remove the short circuit between the terminals 2 and 3 on the outdoor unit terminal strip Disconnect the cable from the terminal 3 on the indoor unit terminal strip Fig 4 Indoor Unit Indoor Unit Short circuit between the terminals 2 and 3 on the indoor unit Fig 4 Fig 5 terminal board
65. aler where you made the purchase e Normally the tabs on the remote controller should not be bent NOTE The remote controller sends the temperature signal to the air conditioner regularly at five minute intervals If the signal from the remote controller stops for more than 15 minutes due to the loss of the remote controller 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 controller may differ from the temperature detected at the air conditioners position USING THE REMOTE CONTROLLER How to Install Batteries UN CJJ UFF C c C gt 1 Slide the cover in the direction indicated by the arrow and remove it Install two AAA alkaline batteries Make sure the batteries point in the direction marked in the battery compartment Use a thin object such as the tip of a pen to press the ACL button The batteries last about six months depending on how much you use CAUTION the remote controller Replace the batteries when the remote controller s display fails to light or when the remote controller cannot be used to change the air conditioner s settings Use two fresh leak proof type AAA alkaline batteries In replacing batteries follow the instructions as mentioned in the subsection How to Install Batteries If you do not use the remote controller more than 1 mon
66. all down accidentally Do not stick any object into the FAN CASE You may be injured and A the unit may be damaged This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV techni
67. baffle plates Air Intake Baffle 3 01 4 3 6 5 mm Model Air Discharge Baffle CU KS18NKUA 24 13 32 1 25 32 22 1 4 25 64 25 32 19 32 23 1 8 25 64 5 29 32 25 32 25 32 20 25 3 16 CU KS24NKUA 10 5 8 25 64 25 32 19 32 25 7 8 25 64 5 29 32 25 82 25 32 2 3 8 3 11 32 CU KS18NKUA CU KS24NKUA 2 3 8 3 11 32 Material to be used Metal plate with corrosion protection treatment Plate thickness 0 0394 to 0 0472 1 0 to 1 2 mm 2 Parts required field supply except for screws Air Intake Baffle Baffle plate Air Discharge Baffle Remarks Item Q ty Remarks Baffle plate Screw 5 32 x 15 32 4 x 12 mm tapping Bolt 15 64 x 19 32 25 32 M6 x 15 20 mm Attached to outdoor unit Bolt 15 64 x 13 32 19 32 M6 x 10 15 mm Nut 15 64 M6 Nut 15 64 M6 Washer Washer Spring washer Spring washer 3 Installation procedure 1 Air Intake Baffle 1 Left side 1 Remove the top panel from the unit 2 Remove the panel side L and drill holes of 1 4 inch 6 5 mm at the prescribed positions 3 Install the windbaffle on the unit using field supply bolts and nuts 4 Recommended bolts to be used are 15 64 M6 ISO standard and the recommended length of the bolts is be
68. cian for help FCC Caution To assure continued compliance follow the attached installation instructions Any changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate this equipment NAMES OF PARTS Air Intakes 00 000 CCI SSS SSS ows ss LCCW C C ii _ _ _ _ _ _ N INDOOR UNIT Air Outlet Drain Hose Remote Controller C gt C Refrigerant Tubes OUTDOOR UNIT Air Outlet NOTE 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 controller Air from the room is drawn into this section and passes through air filters which remove dust Air Outlet Conditioned air is blown out of the air conditioner through the air outlet Remote Controller The remote controller controls power ON OFF operation mode selection temperature fan speed timer setting and air sweeping Moisture in the room condenses and drains off through this hose Refrigerant Tubes The indoor and outdoor units are connected by copper tubes th
69. con troller clock display area Troubleshooting In the event that the green OPERATION lamp is blinking upon powering up the system an error condition exists In this case refer to the self diagnostics procedure on the inside of the front cover IMPORTANT AIR CONDITIONER OO SETTEMP N ni P a F LILI OOF AM dd E PM 0 00 0 2 42 4 7 OFF O QUIET FAN SPEED NIGHT SETBACK FLAP HIGH POWER ese CANCEL CLOCK SENSOR C4 gt F 12H4P24H O ADR O ACL CO After the test run is completed be sure to press the OPERATION TIMER NZ ACL Reset button to return to normal mode The air conditioner will not operate correctly if this is not done M 7 OPERATION J 25 Fig 59c ON OFF operation button OPERATION lamp TIMER lamp QUIET lamp Basic Functions of the Service Valves The basic functions of the service valves are given in Table 8 below Table 8 Action Narrow Tube Service Wide Tube Service Valve 2 Way Valve 3 Way CLOSED O ring Valve cap 1 Jy Stem Shipping Operating and test running the air conditioner 02224 Measuring pressure and gas charging Air purging with ZZ a vacuum pump When opening or closing the service valve stem
70. controller 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 Rear side To prevent loss of the remote Mounting screws controller you can connect the 5 32 x 5 8 4 x 16 mm remote controller to the holder by Included passing a string through the remote controller and attachment hole To take out the remote controller pull it forward Fig 61 27 8 Address Switch 8 1 Address Setting of the Remote Controller The address can be set in order to prevent interference between remote controllers when 2 indoor units are installed near each other The address is normally set to A To set a different address it is necessary to change the address on the second remote controller 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 62 When the tab is removed the address is automatically set to B Fig 63 3 Press and hold the remote controller QUIET button and 1HR TIMER button Then press and hold the ACL Reset button with a pointed object such as the tip of a pen After 5 seconds release the ACL button first then release the QUIET and 1HR TIMER buttons oP 1 Tes
71. ctor wire and replace and tighten the removed terminal screw using a screw driver Fig 32 16 9 32 7 mm ACTUAL STRIP I E I1 SIZE Fig 28 Solid wire 3 Loop N O 5 FF A a Insulation Fig 29 M Stranded wire l Ring S zo F connector 2 a Fig 30 Twist wire ends E gt LL Fig 31 Special washer crew Screw and 2 Ring connector special washer Terminal plate Ww Ring l connector Z L Wire Fig 32 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 Push NOTE For tubing choose either the right or left tubing direction and follow the steps below This work can be made easi Fig 33 er by placing padding material Such as styrofoam at the rear right side of the indoor unit Fig 34 B Right side tubing 1 Shape the refrigerant tubing so that it can easily go into the wall hole Fig 35 2 Push the wiring refrigerant tubing and drain hose Padding material through the hole in the wall Adjust the indoor unit so itis securely seated on the rear panel Fig 36 3 Carefully bend the tubing if necessary to run along Fig 34 the wall in the direction of the outdoor unit and the
72. d insulation Consult your nearest sales outlet or air conditioning workshop 3 Use insulated copper wire for field wiring Wire size varies with the total length of wiring Refer to 3 6 1 4 Type of Copper Tube and Insulation Material i U Wiring Instructions for details If you wish to purchase these materials separately from a local source you will need CAUTION Check local electrical codes 1 Deoxidized annealed copper tube for refrigerant tub and regulations before ing as detailed in Table 2 obtaining wire Also check any specified instructions or Cut each tube to the appropriate lengths 1 to 1 4 30 cm to 40 cm to dampen vibration between units Table 2 limitations Outer Dia Thickness Outer Dia Thickness Model CS KS18NKU 1 4 6 35 0 0314 0 8 mm 1 2 12 70 mm 0 0314 0 8 mm CS KS24NKU 1 4 6 35 mm 0 0314 0 8 mm 5 8 15 88 mm 0 0393 1 0 mm 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 WARNING To prevent abnormal heat genera tion and the possibilitv of fire do not place obstacles enclosures and grilles in front of or surround ing the air conditioner in a wav that mav block air flow AVOID e
73. door air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 85 C DB Cooling lt 208V gt Outdoor Unit Complete Unit Fan Motor Compressor Performance at 208V Single phase 60Hz Rating conditons Running amp Power input 1 468 1 500 Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 85 C DB Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKUA Cooling 230V Outdoor Unit Performance at 230V Single phase 60Hz Rating conditions Running amp Power input Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 35 C DB Cooling lt 208V gt Indoor Unit Outdoor Unit Fan Motor Compressor Performance at 208V Single phase 60Hz Rating conditions Running amp 0 3 Power input 32 1 468 Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 85 C DB 36 Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKU Cooling lt 230V gt Indoor Unit Outdoor Unit rit Fan Motor Compressor Performance at 230V Single phase 60Hz Rating conditons Running amp Power input 2 405 2 460 Rating conditions Indoor air temperature 80 F 26 7 C DB 67 F 19 4 C WB Outdoor air temperature 95 F 35 DB Cooling lt 208V
74. e set time The air conditioner stops and starts or starts and stops at the set times every day For details see SETTING THE TIMER When you press this button use a small tipped object such as a ballpoint pen the W 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 If the remote controller is located near a heat source such as a space heater or in direct sunlight press the SENSOR button to switch to the sensor on the indoor unit NOTE The indoor fan runs continuously when the system is in normal operation It does not turn off when the desired room temperature is reached If Night Set Back mode is selected the fan will turn off intermittently during cooling operation in order to control air flow REMOTE CONTROLLER CONTINUED Temperature Display Selector button This switches the temperature display between C and F Time Display Selector button This switches the time display between 24 hour time and 12 hour time ACL button ALL CLEAR Puts the remote controller into pre operation status Always press this button after replacing the batteries ADDRESS switch e The address switch changes to prevent mixing of signals from remote controllers when two air conditioners are installed next to each other Normally the address switch is set to A For more information please contact the de
75. e windbaffle is installed on the unit the unit has higher wind resistance In order to prevent the unit from falling over anchor the legs of the unit using anchor bolts or similar method 4 Precautions for installation 1 Be sure not to damage painted surfaces 2 Finish the edges of the windbaffle to avoid cuts or injury 3 Drilling of holes must be carefully done so that no damage is caused to external or internal parts of the unit Particular care must be taken that drill chips do not drop into the unit 9 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 A marks on the frame cover and disen gage the stationary tabs from the frame Fig 7 3 Remove the rear panel Tubing can be extended in 5 directions as shown in Fig 8 Select the direction you need providing the shortest run to the outside unit When left tubing is to be done switch the drain hose and drain cap For details refer to Switching drain hose and drain cap on page 18 3 2 Make a Hole 1 Place the rear panel from the indoor unit on the wall at the location selected Make sure the panel is hori zontal using a carpenter s level or tape measure to measure down from the ceiling Wait until after cut ting the hole before attaching the rear panel to the wall 2 Determine which side of the unit you should make the hole for tubi
76. ed This symbol indicates the items requiring special attention or instruction In or close to this circle a prohibited item is described e After doing repair work perform a test run to confirm that there are no abnormalities At the same time explain the precautions in use to the user N Warning Before performing an overhaul disconnect the power plug or power cable from the unit Performing the work with the power supplied to the unit may cause an electric shock When repair work or circuit inspection that requires power supply for the air conditioner is to be performed do not touch the charging section Doing so may cause an electric shock For the step up capacitor attached to the electric section perform the repair work after sufficiently discharging it Insufficient capacitor discharge may cause an electric shock Do not perform repair work on the electric sections with wet hands Doing so may cause an electric shock Do not start or stop the air conditioner by means of connecting or disconnecting the power plug Doing so may cause an electric shock or fire When conducting repair work only use components included in the parts list for the corresponding unit and perform the work with the appropriate tools Incorrect or poor repair work may cause an electric shock or fire Never modify the unit Doing so may cause an electric shock or fire Perform all electric work according to local applicable regulations related to
77. en pin 4 and pin 3 DC 14 V or more 3 Vs Gnd Between pin 5 and pin 3 Fluctuation between DC 1 7 to 6 1 V Diagnostic results All of the above measured values are normal Fan motor trouble Replace the motor Any one of the above measured values is not normal Indoor unit controller trouble Replace the controller Reference DC motor connector pin arrangement Pin 1 Vm red Pin 2 Not used Pin 3 Gnd black Pin 4 Vcc white Pin 5 Vs yellow Pin 6 PG blue 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 not change during indoor unit operation Trouble symptom 5 Fan motor rotation speed varies excessively during indoor unit operation Remedy for symptom 3 to 5 It is not possible to identify whether the trouble is indoor unit controller trouble or motor trouble Therefore first replace the indoor unit controller then if necessary replace the DC motor 54 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 Important
78. ensation both tubes must be well insulated with a proper insulation material Fig 53 The thickness of the insulation should be a minimum 5 16 8 mm Fig 54 CAUTION After a tube has been insulat ed never try to bend it into a narrow curve as this may cause the tube to break or crack 5 6 Taping the Tubes 1 At this time the 2 refrigerant tubes and electrical wire if local codes permit should be taped together with armoring tape The drain hose may also be included and taped together as 1 bundle with the tubing 2 Wrap the armoring tape from the bottom of the outdoor unit to the top of the tubing where it enters the wall As you wrap the tubing overlap half of each previous tape turn Fig 55 3 Clamp the tubing bundle to wall using 1 clamp approx every 47 120 cm Do not wind the armoring tape too tightly since this will decrease the heat insulation effect Also be sure the con densation drain hose splits away from the bundle and drips clear of the unit and the tubing 5 7 Finishing the Installation After finishing insulating and taping over the tubing use sealing putty to seal off the hole in the wall to prevent rain and draft from entering Fig 56 22 Torque wrench Indoor unit Insulation Fig 53 Insulation A Thickness Min min 5 16 5 16 8 mm 8 mm Apply putty here Tubing Fig 56 6 Air Purging Air and moisture remaining in t
79. erminal follow the instructions How to connect wiring to the terminal and fasten the wire securely tight with the fixing screw of the terminal plate How to connect wiring to the terminal a For Indoor Unit 1 Cut the wire end with a cutting pliers then strip the insulation to expose the wire about 9 32 7 mm See the label Fig 28 near the terminal plate 2 Using a screwdriver loosen the terminal screw on the terminal plate 3 Insert the wire and tighten the terminal screw com pletely using a screwdriver b For Outdoor Unit H For solid core wiring or F cable 1 Cut the wire end with a cutting pliers then strip the insulation to expose the solid wire about 15 16 25 mm Fig 29 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 Using the pliers bend the solid wire to form a loop suitable for the terminal screw 4 Shape the loop wire properly place it on the termi nal plate and fix it securely with the removed termi nal screw using a screwdriver H For stranded wiring 1 Cut the wire end with a cutting pliers then strip the insulation to expose the stranded wiring about 3 8 10 mm and tightly twist the wire ends Figs 30 and 31 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 Using a ring connector fastener or pliers securely clamp each stripped wire end with a ring connector Fig 30 4 Place the ring conne
80. ernal Finish Acrylic baked on enamel finish DATA SUBJECT TO CHANGE WITHOUT NOTICE Outdoor Unit CU KS24NKUA Control PCB CB CU KS24NKUA Control Circuit Fuse 250V 25A Compressor DC Twin Rotary Hermetic Compressor Model Nominal Output G8T265FU1JW 2 410W Compressor Oil Amount Pints cc FV50S 1 49 700 Coil Resistance Ambient Temp 77 F 25 C Ohm Safety Device Y es Compressor Discharge Temp Control es es Operation cutoff control in abnormal ambient Temp Overload Relay Model CS 7L115 Operation Temp Open 239 F 115 C Close 203 F 95 C Run Capacitor Micro Es VAC Crankcase Heater 230V 30W Propeller Q ty Dia inch mm 1 D18 1 8 D460 FNommalOuput Coil Resistance Ambient Temp 68 F 20 C Safety Device Type Internal Controller Over Current Protection Over Heat Protection Run Capacitor Heat Exchanger Coil Fins per inch Face Area ft m External Finish Acrylic baked on enamel finish DATA SUBJECT TO CHANGE WITHOUT NOTICE 2 3 Other Component Specifications Indoor Unit CS KS18NKU CS KS24NKU Outdoor Unit CU KS18NKU CU KS24NKU CU KS18NKUA CU KS24NKUA Indoor heat exchanger sensor Model PTM D51H S4 2 TH1 Indoor air temp sensor Compressor temp sensor Model PTM D51H S4 2 TH2 Model TKS 293B Resistance ohm Resistance k ohm ligi ms op LLL 3
81. es of the flare and union before connect ing them together This is effective for reducing gas leaks Fig 50 c For proper connection align the union tube and flare tube straight with each other then screw in the flare nut lightly at first to obtain a smooth match Fig 51 Deburring Before After A 7 A Fig 47 Fig 48 If the special R410A If the previous flare tool flare tool is used clutch type is used D 0 to 0 0196 ZZ 0 0472 1 2 mm 0 to 0 5 mm Adjust so that the amount of tube protrusion is as shown in the figure Fig 49a an Copper 3 1 amp tubing Fig 49b DL Apply refrigerant lubricant here and here Union Flare nut Fig 51 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 Nut Tightening Torque 1 4 6 35 mm 21 32 17 mm Approx 120 160 Ibs in 140 180 kgf cm 3 8 9 52 mm 7 8 22 mm Approx 300 360 Ibs in 840 420 kgf cm 1 2 12 70 mm 1 1 32 26 mm Approx 430 480 Ibs in 490 550 kgf cm 5 8 15 88 mm 1 5 32 29 mm Approx 590 710 Ibs in 680 820 kgf cm 5 5 Insulation of Refrigerant Tubing IMPORTANT To prevent heat loss and wet floors due to dripping of con d
82. evel 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 indoor temperature is 59 F or less Sometimes the indoor unit may not get to the set fan speed such as LOW and QUIET under cool operation at very low outdoor temperatures due to the Indoor unit being protected from ice or frost when combined with the outdoor unit for Low Ambient Cooling models In the event of power failure the unit will stop When the power is resumed the unit will restart automatically within five minutes by the remote controller In cooling operation any plastic parts may shrink due to a sudden temperature change In this event a clicking sound may occur This is normal and the sound will soon disappear The remote controller sends the setting condition to the air conditioner regularly at five minute intervals SETTING THE TIMER MODE FAN SPEED NIGHT SETBACK FLAP HIGH POWER NOTE 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 controller e Temperature F e Time AM PM 1 How to set the present Example To set to 10 30 pm time x Operation Indication 7 Press the CLOCK button once if The time indication alone flashes the time indicator
83. failure the unit must be grounded 4 Each wiring connection must be done tightly and in accordance with the wiring system diagram Wrong wiring may cause the unit to misoperate or become damaged b Do not allow wiring to touch the refrigerant tubing Fig 22 compressor or any moving parts of the fan 6 Unauthorized changes in the internal wiring can be very dangerous The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes 13 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 Refer to the wiring system diagram Fig 23 for the meaning of A B and C in Table 5 Refer to your local codes or in the absence of local codes see the National Elec tric Code ANSI NFPA70 Table 5 A B A Power Supply Wiring Length ft C Control IN AWG B Power Line Length ft Line Length ft Fuse or Circuit Breaker Capacity Model 14 12 14 CU KS18NKU CU KS18NKUA 131 Max 230 Max 100 Max 15A CU KS24NKU 131 Max 230 Max 132 Max 20A CU KS24NKUA 131 Max 230 Max 100 Max 20A f AWG American Wire Gauge
84. fore do not add new refrigerant Instead recover the remaining refrigerant with the refrigerant recovery unit Then after evacuation totally recharge the specified amount of refrigerant with the new refrigerant at its normal mixed composition state in liquid phase e 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 J N Ether type oil is used for compressor oil for R410A type units which is different from the mineral oil used for R22 Thus more attention to moisture prevention and faster replacement work compared with conventional models are required 59 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 Specification A Diameter of tube D Flare tool for R410A Conventional flare tool for R22 Dia 1 4 6 35 mm Dia 3 8 9 52 mm 0 to 0 0196 0 0472 Dia 1 2 12 7 mm 0 to 0 5 mm 1 2 mm Dia 5 8 15 88 mm e Size of flare Flare tool for R410A Conventional flare tool R22 e Tubing precautions e Re
85. frigerant 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 thickness since air conditioners with R410A are subject to higher pressure than those using R22 and R407C No addition of compressor oil for R410A No additional charge of compressor oil is permitted e No use of refrigerant other than R410A Never use a refrigerant other than R410A e If refrigerant R410A is exposed to fire Through welding etc toxic gas may be released when R410A refrigerant is exposed to fire Therefore be sure to provide ample ventilation during installation work e Caution in case of R410A leak Check for possible leak points with the special leak detector for R410A If a leak occurs inside the room immediately provide thorough ventilation 60 11 3 Tools Specifically for R410A e For servicing use the following tools for R410A Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Refrigerant recovery unit Tools specifically for R410A Vacuum pump with anti reverse flow 1 Solenoid valve installed type which prevents oil from flowing back into the unit when the power is off is recommended e Vacuum pump 2 can be used if the following adapter is attached e Vacuum pump adapter reverse f
86. gerating cycle Prohibit which may cause a unit breakdown When the welded section of the compressor intake or discharge pipe is to be disconnected perform it in a well ventilated place after sufficiently recovering the refrigerant gas Any residue gas may jet out refrigerant or refrigerating machine oil which may cause an injury When the work is to be performed in a high place About 2 meters or more make sure to wear a safety helmet gloves and safety belt Insufficient safety gear may cause a serious injury in case of a fall When the unit is to be relocated confirm that the new installation location has sufficient strength for the weight of the unit x Insufficient strength of the installation location and incomplete installation work may cause an injury due to the unit falling When the remote controller batteries are replaced dispose of the old batteries out of the reach of children If a child swallows a battery make sure that the child gets immediate medical attention Do not wash the air conditioner with water as this may cause an electric shock or fire N Prohibit For the repair work in places with high humidity or moisture make sure to ground the unit Failure to do so may cause an electric shock Confirm that the component attachment position wiring condition soldering condition and connector connection are normal If not it may cause overheating or fire Confirm that the temperature around the compressor is not
87. he battery from remote controller keep it away from the reach of children The battery can cause death by suffocation if swallowed When inserting the battery make sure the polarities and are correct ANETO To prevent possible hazards from insulation failure the unit must be grounded Do not clean inside the indoor and outdoor units by users Engage authorized dealer or specialist for cleaning In case of malfunction of this appliance do not repair by yourself Contact to the sales dealer or service dealer for a repair Refrigerant gas leakage may cause fire For safety be sure to turn the air conditioner off and also to disconnect the power before cleaning E Pull off the power plug from a receptacle or switch off the breaker or switch off the power disconnecting mean to isolate the air conditioner from the main power supply in case of emergency 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 A Do not touch the air inlet or the sharp aluminum fins of the outdoor unit You may get injured Keep the fire alarm and the air outlet at least 1 5m away from the unit Do not let children play with the air conditioner Do not cool or heat the room too much if babies or invalids are present Do not sit or step on the unit i You may f
88. he refrigerant system have undesirable effects as indicated below Therefore they must be purged completely e pressure in the system rises operating current rises cooling or heating efficiency drops e e e moisture in the air may freeze and block capillary tubing e water may lead to corrosion of parts in the refrigerant system E Air Purging with a Vacuum Pump for Test Run 1 Check that each tube both narrow and wide tubes between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed Note that both narrow and wide tube service valves on the outdoor unit are kept closed at this stage 2 Using an adjustable wrench or box wrench remove the valve caps from the service valve on both nar row and wide tubes 3 Connect a vacuum pump and a manifold valve with pressure gauges to the service port on the wide tube service valve Fig 57 CAUTION The service port on the wide tube service valve uses a Schrader core valve to access the refrigerant sys tem The valve core is similar to those used in automobile tires Therefore be sure to use a vacuum hose connector which has a push pin inside CAUTION Be sure to use a manifold valve for air purging If it is not avail able use a stop valve field sup ply for this purpose The Hi knob of the manifold valve must always be kept closed 4 With the Lo knob of the manifold valve open run the v
89. hose with insulation so that chilled condensation will not damage furniture or floors Fig 44 Foamed polyethylene or its equivalent is recom mended WARNING Do not supply power to the unit or operate it until all tubing and wiring to the out side unit are completed Risk of Electric Shock 19 1 Push Fig 42 Indoor unit hose Fig 43 Condensation AA t Insulation material gt Locally purchased must be used Fig 44 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 Lock nut field wiring requirements please refer to your local elec trical codes Make sure that the installation fully complies Cabinet with all local and national regulations E TA 1 Remove access panel Fig 46 Terminal 2 Connect the inter unit and power supply line accord block ing to the drawing on the panel side 3 Be sure to size each wire allowing approx 4 10 cm longer than the required length for wiring Conduit Store excess wiring inside the cabinet pee 4 When connections completed check that all connections are correct as shown in the wiring sys tem diagram on panel side 3 3 Access panel C 5 Be sure to ground the unit according to your local Plug inter
90. id electrical shock hazard be sure to WARNING disconnect power before checking servicing and or cleaning any electrical parts REACTANCE 1P CONNECTOR WHT m BLK POWER RELAY CRANKCASE HEATER 25A ONO UNIT CONTROLLER COIL OUTDOOR TO INDOOR U N T G cc O O LLI 2 z Q Pi A J RE DI B BL gt WH BLU BRN WHT ORG HIGH PRESSURE SWITCH V Ur lt W ot mk 5 MAGNETIC COIL BLK 2P CONNECTOR BLK COMPRESSOR THERMISTOR THERMISTOR 7P CONNECTOR WHT COMPRESSOR OVERLOAD RELAY FAN MOTOR MOTOR OLR WHT WHT ELEC SYSTEM ASSY WHT WHT 2P CONNECTOR RED 8FA2 5251 12700 2 41 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 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 the address on the second remote controller 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 1 When the tab is removed the address is automatically set to B Fig 2 3 Press and
91. in Fig 58 CAUTION Be sure to completely insert the hex wrench before attempting to turn the valve 7 Leak test all joints at the tubing both indoor and out doors with soapy water Bubbles indicate a leak Tight en the joint more when leaks then check if there is no leak Be sure to wipe off the soap with a clean cloth 8 With the hex wrench turn the wide tube service valve stem counter clockwise to fully open the valve 9 Turn the narrow tube service valve stem counter clockwise to fully open the valve 10 Loosen the vacuum hose connected to the wide tube service port slightly to release the pressure Then remove the hose CAUTION This may cause the refriger ant gas to leak In order to avoid this take off the hose quickly 11 Fasten the valve cap on the wide tube service port securely with an adjustable wrench or box wrench Next mount the valve cap on the service valve and tighten it to 170 Ibs in 200 kgf cm with a torque wrench This process is very important to prevent gas from leaking from the system 12 Test run the air conditioner See next page 13 While the air conditioner is running apply liquid soap to check for any gas leaks around the service valves or Caps 14 If there is no leakage stop the air conditioner 15 Wipe off the soap on the tubing This completes air purging with a vacuum pump and the air conditioner is ready for actual operation 24 90 1
92. less device Use a signal booster 56 10 CHECKING ELECTRICAL COMPONENTS 10 1 Measurement of Insulation Resistance e 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 Fig 1 Then also measure the resistance between the grounding and other power terminals Fig 1 10 1 2 Indoor Unit Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 10 1 3 Outdoor Unit Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate Fig 2 10 1 4 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from terminal plate capacitor etc Similarly disconnect the connector Then measure the insulation resistance Figs 3 and 4 Refer to Electric Wiring Diagram If the probe cannot enter the poles because the hole is too narrow then use a probe with a thinner pin 57 Ground
93. lified electrician for details 2 Each unit must be properly grounded with a ground or earth wire or through the supply wiring 3 Wiring must be done by a qualified electrician NOTE Pull off the power plug from a receptacle or switch off the breaker or switch off the power disconnecting mean to isolate the air conditioner from the main power supply when not in use for a long time SAFETY INSTRUCTIONS e Read this Instruction Manual carefully before using this air conditioner If you still have any difficulties or problems consult your dealer for help e This air conditioner is designed to give you comfortable room conditions Use this only for its intended purpose as described in this Instruction Manual Confirm to authorized dealer or specialist on usage of specified ANETO refrigerant type Using of refrigerant other than the specified type may cause product damage burst and injury etc Never touch the unit with wet hands Never use or store gasoline or other flammable vapor or liquid near the air conditioner it is very dangerous Do not use this appliance in a potentially explosive atmosphere This air conditioner has no ventilator for intaking fresh air from outdoors You must open doors or windows frequently when you use gas or oil heating appliances in the same room which consume a lot of oxygen from the air Otherwise there is a risk of suffocation in an extreme case Do not swallow the battery After removing t
94. linking and the present time is displayed 4 How to set DAILY ON OFF Example To start operation at 7 10 am and stop the air conditioner at 11 00 am REPEAT timer 10 30 pm 7 10 am 11 00 am Present time ON OFF Indication 1 Set the timer ON OFF times as The present time 10 30 pm and shown in 2 1 2 3 and 3 1 2 3 KOM are displaved The ON OFF combination timer uses the current time as the reference and it is activated starting from whichever set time comes first e With the ON OFF combination timer the settings are repeated every day e You can check the timer ON OFF times after you have set them by pressing the ON TIME and OFF TIME setting buttons To cancel a timer program Press the CANCEL button e When either an ON or OFF timer is to be canceled press the button corresponding to the timer whose program is to be canceled and then press the CANCEL button e The airflow direction fan speed and temperature setting be changed after a timer program has been set even when the unit is stopped Even when operation is stopped during an ON timer program the unit will start operating when the set time is reached provided that the program is not canceled e When the ON timer and OFF timer are set to the same time the timer operates as if it is turned off 18 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 whe
95. low depending on the wall type INSIDE Wal OUTSIDE PVC pipe Slight KERN angle a If Wooden Wall Plastic cover Locally purchased 1 Attach the rear panel to the wall with the 8 screws provided Fig 13 If you are not able to line up the holes in the rear panel with the beam locations marked on the wall use rawl plugs or toggle bolts to go through the holes on the panel or drill 3 16 5 mm dia holes in the panel over the stud locations and then mount the rear panel Fig 12 N Double check with a carpenter s level or tape mea sure that the panel is level This is important to install the unit properly Fig 14 Make sure the panel is flush against the wall Any Fig 13 space between the wall and unit will cause noise and vibration b If Block Brick Concrete or Similar Type Wall Make 3 16 4 8 mm dia holes in the wall Insert rawl plugs for appropriate mounting screws Fig 15 3 16 4 8 mm dia hole EB Rawl plug Fig 15 3 4 Remove the Grille to Install the Indoor Unit Air intake grille Grille Basically these models can be installed and wired with out removing the grille If access to any internal part is needed follow the steps as given below How to remove the grille
96. low prevention adapter 3 Solenoid valve installed adapter attached to a conventional vacuum pump Electronic scale for charging refrigerant Flare tool Bender Tools which can be com Torque wrench monly used for R22 R407C and R410A Cutter reamer Welding tool nitrogen gas cylinder J N The above tools specifically for R410A must not be used for R22 and R407C Doing so will cause malfunction of the unit e For the above vacuum pump 1 2 and vacuum pump adapter 3 those for R22 type units can be used for R410A type However they must be used exclusively for R410A and never alternately with R22 and R407C e To prevent other refrigerants R22 R407C from being mistakenly charged to this unit shape and external diameter of the service port screw has been altered lt External diameter of service port gt R410A 5 16 R22 R407C 1 4 11 4 Tubing Installation Procedures When the tubes are connected always apply HAB oil on the flare portions to improve the sealing of tubing The following is the HAB oil generally used Esso ZERICE S32 For details on tubing installation procedures refer to the installation manuals attached to the indoor unit and outdoor unit 61 11 5 In Case of Compressor Malfunction CAUTION e Should the compressor malfunction be sure to make the switch to a replacement compressor as quickly as possible e Use only the tools indicated exclusively for R410A See 11 3
97. lting in abnormal signal pulses and malfunction 1 Locations near broadcast stations where Either of the following trouble may occur The fundamental concept is to make the there are strong electromagnetic waves 1 The unit may stop suddenly during system less susceptible to noise 2 Locations near amateur radio short wave operation Insulate for noise or stations 2 Indicator lamps may flicker distance from the noise source 3 Locations near electronic sewing machines 1 Use shielded wires and arc welding machines 2 Move unit away from the noise source 2 Electromagnetic interference This refers to noise generated by high speed switching of the microcomputer and compressor This noise radiates through space and returns to the electric wiring affecting any wireless devices televisions radios etc located nearby 1 A television or radio is located near the 1 Noise appears in the television picture 1 Select a separate power source A C and A C wiring or the picture is distorted Keep the A C and A C wiring at least 1 meter 2 The antenna cable for a television or 2 Static occurs in the radio sound away from wireless devices and antenna cables radio is located close to the A C and A C Change the wireless device s antenna to a high wiring sensitivitv antenna 3 Locations where television and radio Change the antenna cable to a BS coaxial cable signals are weak ue Use a noise filter for the wire
98. mperes A 10 8 1 3to 10 8 Power Input W 2 460 280 to 2 460 e z Power Factor C 0 0 0 0 0 0 99 5 5 0 0 5 LEER BTU WW BB Compressor Locked Rotor Amperes A Airflow Direction Indoor Horizontal Vertical R410A 7 4 30 1 950 Operation Sound Indoor Hi Me Lo Qt dB A 47 44 41 30 Qt Quiet mode Outdoor Hi dB A 55 Refrigerant Tubing Connections Refrigerant Narrow tube inch mm 1 4 6 35 Tube Diameter Wide tube inch mm o Unit Dimensions inch f 11 23 32 x 41 15 16 x 8 5 8 29 1 8 x 35 7 16 x 12 19 32 Height Width x Depth mm 298 x 1 065 x 219 740 x 900 x 320 Package Dimensions inch 11 27 82 x 45 1 8 x 15 5 32 34 3 16 x 41 11 32 x 16 21 32 Height x Width x Depth mm 2 Weight Net Ibs kg E Shipping Ibs kg a 4 59 0 13 13 41 0 38 DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature 80 F DB 67 F WB Outdoor air temperature 95 F DB 75 F WB Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKU lt 208V gt Total Capacity BTU h 24 200 4 000 to 24 200 kW 71 121074 E Sensible Capacity BTU n 5 Air Circulation Hi Me Lo ft min m h 659 1 120 571 970 494 839 Moisture Removal High Pints h 4 89 Available Voltage Range V 187 to 253 Running Amperes A 12 1 1 3 to 12 1 Power Input W 2 460 280 to 2 460 g z Power Factor 2l1 J
99. n NOTE The illustration above pictures the remote controller after the cover has been opened Transmitter When you press the buttons on the remote controller the mark appears in the display to transmit the setting changes to the receiver in the air conditioner Sensor A temperature sensor inside the remote controller senses the room temperature Information on the operating conditions is displayed while the remote controller is switched on If the unit is turned off FLAP setting and FAN SPEED setting are not displayed Display QUIET button Wal When you press this button the fan rotates slower than the fan speed setting to provide a quieter operating sound ON OFF operation button This button is for turning the air conditioner on and off 1 HR TIMER button When you press this button regardless of whether the unit is operating or 1 HOUR OFF TIMER stopping the unit operates for one hour and then shuts down REMOTE CONTROLLER CONTINUED Temperature setting buttons TEMP MODE selector button DRY COOL FAN FAN SPEED selector button NIGHT SETBACK button FLAP button HIGH POWER button ON TIME OFF TIME setting buttons SENSOR button Press the jA button to increase the set temperature 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 Use this button to select DRY COOL or F
100. n tape as far as the fittings See Caution on page 21 The drain hose should come straight down the wall to a point where water runoff won t stain the wall Hear panel Cover Refrigerant tubing 4 Connect the refrigerant tubing to the outdoor unit After performing a leak test on the connecting part insulate it with the tubing insulation Fig 37a Also refer to Section 5 4 Connecting Tubing between Indoor and Outdoor Units Drain hose Inter unit wiring 5 Assemble the refrigerant tubing drain hose and conduit including inter unit wiring as shown in Fig 37b Refrigerant tubing Insulation Fig 37a 9 Conduit Drain hose Inter unit wiring Fig 37b 17 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 Switch the drain hose and drain cap Switching drain hose and drain cap a Locate the drain hose and the drain cap Fig 39 b Remove the screw fastening the drain hose on the right side and pull out the drain hose to remove it Fig 39 c Apply moderate force to pull off the drain cap on the left side If you cannot pull it off by hand use a long nose pliers d Reattach the drain hose to the left side and the drain cap to the right side Fig 40a Drain hose Slide the drain hose fully o
101. n 36 F 2 C The compressor restarts when the temperature of indoor heat exchanger becomes 46 F 8 C or higher 46 H Compressor discharge temperature control This function controls the operation frequency to prevent the compressor discharge temperature from rising more than a specified temperature Compressor discharge temperature F C Approx 214 101 Approx 2 Area Automatic capacity control When the temperature rises above Point A the operation frequency is reduced at a specified rate 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 a area The compressor will stop if the temperature of the compressor discharge exceeds 248 F 120 C due to shortage of gas or other reason H CT Peak current cut off control 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 load or to a decrease in the power supply voltage In these cases operation frequency is reduced or operation is interrupted auto matically to control the electrical current for operation e When the cause of the increase in electrical current is rectified the system will resume operation in the original mode CS KS18NKU A T cooing Dry lt CS KS24NKU gt A T cooi
102. n and Electromagnetic Interference CHECKING ELECTRICAL COMPONENTS 10 1 Measurement of Insulation Resistance naaaaaaaaaaaaaavaaasaauananaaaaaauaaanaaausaausaauaaanannanaa 10 2 Checking Continuity of Fuse PCB ASS Y Page Page 11 REFRIGERANT R410A SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11 1 Characteristics of New Refrigerant R410A 59 11 2 Ghecklist Detore u TT 60 11 3 Tools Specifically for R410A sisien 61 1122 Tu ubingin nstallation Procedure u u uu U uuu uu l ull uuu dika 61 11 5 In Case of Compressor Malfunction 62 11 6 In Case Refrigerant is Leaking 64 11 7 Charging Additional Refrigerant 65 11 8 Retro Fitting Existing Systems pi ii e tt 65 Operating Instructions 1 INSTALLATION INSTRUCTIONS nn en A 2 1 OPERATING RANGE Models CS KS18NKU CU KS18NKU CS KS24NKU CU KS24NKU Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Models CS KS18NKU CU KS18NKUA CS KS24NKU CU KS24NKUA Temperature _ Indoor Air Intake
103. nded A k position NOTE flap automatically closes when the unit is off e Use the FLAP button on the remote controller to adjust the position of the flap If you move the flap by hand the flap position according to the remote controller and the actual flap position may no longer match If this should happen shut off the unit wait for the flap to close and then turn on the unit again the flap position will now be normal again Do not have the flap pointed down during cooling operation Condensation may begin to form around the air vent and drip down 20 OPERATION WITHOUT THE REMOTE CONTROLLER INDOOR UNIT If you have lost the remote controller 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 OPERATION FA cyclically Cooling operation Stop OPERATION OPERATION button NOTE The temperature is set to the room temperature minus 4 F during the cooling operation and the fan speed and flap are set to Auto CARE AND CLEANING For safety be sure to turn the air conditioner off and also to disconnect AX the power before cleaning Do not pour water on the indoor unit to clean it This will damage the internal components and cause an electric shock hazard Casing and Grille Indoor Unit Clean the casing and grille of the indoor unit with a vacuum cleaner brush or wipe them with
104. ng Dry 9 TROUBLESHOOTING BEFORE CALLING FOR SERVICE 9 1 Precautions before Performing Inspection or Repair After checking the self diagnostics monitor turn the power OFF before starting inspection or repair e 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 Be careful not to touch any electrified parts before the controller LED red turns OFF If the outdoor controller is normal approximately 30 seconds will be required for the charge to dissipate However allow at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller 9 2 Method of Self Diagnostics Follow the procedure below to perform detailed trouble diagnostics 1 If the operation lamp blinks every 0 5 seconds immediately when the power is turned ON there is an external ROM OTP data failure on the indoor circuit board or a ROM socket insertion problem or the ROM has not been installed 2 The failure mode is stored in memory even when the power is not ON 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 QUIET button and 1 H
105. ng and wiring Fig 9 In the case of left rear tubing use the measurement points 2 3 8 60 mm from the edge of the rear panel for precise placement of the hose outlet Fig 9 3 Before making the hole check carefully that no studs or pipes are directly run behind the spot to be cut N CAUTION Also avoid areas where elec trical wiring or conduits are located The above precautions are also applicable if tubing goes through the wall in anv other location 10 Set screw oniv for transportation Fig 6 Rear panel Right rear tubing recommended J Right tubing Left rear tubing Downward tubing Fig 8 2 3 8 60 mm 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 10 i outdoor side Table 4 Indoor Outdoor 3 5 32 80 mm 5 Measure the thickness of the wall from the inside edge to the outside edge and cut PVC pipe ata slight angle 1 4 6 mm shorter than the thickness of the wall Fig 11 PVC pipe Locally purchased 6 Place the plastic cover over the end of the pipe for GAD indoor side oniv and insert the pipe in the wall Fig 12 3 3 Install the Rear Panel on the Wall Cut at slight angl Be sure to confirm that the wall is strong enough to sus Mi i Fig 11 pend the unit See either Item a or b be
106. nsert it Pin all the way inside Air intake grille 3 To attach the air intake grille to the indoor unit press its bottom right and left corners as well as its bottom center into place NOTE Attach so that the round pins at the top right and left corners of the air intake grille are inserted into the grooves at the top right and left of the indoor unit CARE AND CLEANING CONTINUED Cleaning the main unit and 7 Wipe clean using a soft dry cloth Remote Controller remove stubborn dirt moisten a cloth in warm water no hotter than 104 F wring thoroughly and then wipe e The air intake grille can be removed in order to wash it with water Removing and remounting the Refer to How to remove the filter and How to replace the filter on page 22 air intake grille When using a footstool or the like be careful not to let it tip over CAUTION Washing the grille with water Clean the grille gently using a soft sponge or the like Then wipe away any remaining moisture e Neutral detergent may be used to remove stubborn dirt Then rinse thoroughly with water and wipe away any remaining moisture WIRED REMOTE CONTROLLER A separately sold wired remote controller CZ RD515U used with this air conditioner is also available If you wish to use the wired remote control function you will need to purchase both the optional wired remote controller and its connection kit CZ RC515U 2
107. nto the drain pan outlet until the drain hose edge is pushed into the insula tion Check that the screw holes in the drain bracket and the drain pan outlet are aligned and securely in contact then fasten them with the screw After attaching the drain hose check that it is attached securely Fig 40c Drain cap Use a Phillips screwdriver to push the drain cap in firmly If it is difficult to push in wet the cap with water first Install the indoor unit on the rear panel Connect the tubing and wiring led inside from out doors After completing a leak test bundle the tubing together with armoring tape and store it inside the tubing storage area at the back of the indoor unit and hold it with clamps Figs 40a and 41 Y Rear panel Hole in wall K A i an Bent part Wide tube Narrow tube rain hose Fig 40a Screw hole Insulation Drain bracket Drain bracket Drain hose Drain hose Screw Fig 40c Fig 40b JO Refrigerant tubing Inter unit wiring Conduit Nei Fig 41 18 To unmount indoor unit Press the 2 A 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 Fig 43 b Never form a trap in the course of the hose c Ifthe drain hose will run in the room insulate the
108. onger to cool the room Do Always try to keep the air filter clean Refer to CARE AND CLEANING A clogged filter will impair the performance of the unit To prevent conditioned air from escaping keep windows doors and any other openings closed 19 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 vanes are positioned all of the way to the right or left condensation may begin to form around the air vent and drip down 2 Vertical The vertical airflow can be adjusted by moving the flap with the remote controller Do not move the flap with your hands Confirm that the remote controller has been turned on Use the FLAP button to set either the sweep function or one of the six airflow direction settings A SWEEP A u T MODE FAN SPEED NIGHT SETBACK CE FLAP HIGH POWER DRY FAN A Sweep function B Setting the airflow manually The flap starts moving up and down to Referring to the above illustration use the 77 deliver air over the sweep range FLAP button to set the airflow direction within the range used during the cooling or C Auto flap function dehumidifving operation s The flap is set to the recomme
109. ontroller It can be set regardless of the temperature and fan speed settings HIGH POWER operation from remote controller The unit operates at maximum output for 30 minutes regardless of the desired temperature The fan speed is 1 step above High Frequency 30 min 5 min V Start End NOTE e When HIGH POWER operation ends the unit operates at low Hz for 5 minutes regardless of the thermostat OFF conditions When in DRY mode operation is in the cooling zone H Lamp colors OPERATION lamp DRY operation COOL operation FAN operation TIMER lamp QUIET lamp Timer backup Operation stops if there are no operator controls for 25 hours or longer after unit operation switched from OFF to ON by use of ON timer operation B NIGHT SETBACK e When NIGHT SETBACK operation is set the temperature and fan speed settings will be adjusted automatically to allow comfortable sleep When NIGHT SETBACK operation is set mark appears on the remote controller The main unit display lamp also becomes dimmer e 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 regardless of the indoor temperature when night setback was selected This enables you to save energy without sacrificing comfort This function
110. oom Properly insulate any tubing run inside a room to prevent sweating that can cause dripping and water damage to walls and floors Keep the fire alarm and the air CAUTION outlet at least 1 5 m away from the unit In Moist or Uneven Locations Use a raised concrete pad or concrete blocks to provide a solid level foundation for the outdoor unit This prevents water damage and abnormal vibration In an Area with High Winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitable air baffle In a Snowy Area for Heat Pump type Systems Install the outdoor unit on a raised platform that is higher than drifting snow Provide snow vents When Connecting Refrigerant Tubing 000900090000090000090900000000000000900000000000000900000090000000000000099000000000090000000000000009000000900000000000000009000009000000 When performing piping work do not mix air except for speci fied refrigerant R410A in refrigeration cycle It causes capacity down and risk of explosion and injury due to high tension inside the refrige rant cycle Refrigerant gas leakage may cause fire Do not add or replace refrigerant other than specified type It may cause product damage burst and injury etc Ventilate the room well in the event that refrigerant gas leaks during the installation Be careful not to allow contact of the refrigerant gas with a flame as this will cause the generation of
111. or 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 Symbols 1 Operation mode 4 Timer 24 hour clock with ON OFF MILD saan Ta Oy KO NI NI ie Fel poet 1 hour OFF 1 H d Automatic operation 5 NIGHT SETBACK 6 Confirmation of P transmission 7 Auto fla dication A Flap angle indication 3 Temperature setting SET TEMP 60 86 F WA lt s mE When set to 80 F bl j Sweep indication 7A temperature indication J D f F nV lt 8 High power operation 9 Quiet operation Transmitter Display QUIET button FAN SPEED selector button FLAP button ON TIME Advance button setting buttons Return button CANCEL button SENSOR button ADDRESS switch Temperature display selector button REMOTE CONTROLLER Sensor Cover closed ON OFF operation button 1 HR TIMER button Temperature setting buttons TEMP MODE selector button NIGHT SETBACK button HIGH POWER button Advance button TIME Return button setting buttons CLOCK button Time display selector button ACL butto
112. ot perform the short circuit work between any other terminals except for N CAUTION specified ones on the specified terminal strip If such work is performed between the incorrect terminals the unit might be broken i ircui TP Convenient Tool for Short Circuit Work for example gt t Alligator Clip Alligator Clip rr ET J lt Check Items before Troubleshooting Serial Communication Start gt After confirming that the following errors do not exist start the Troubleshooting Serial Communication in Condition E01 and E12 Mis wiring inter unit cable etc 6 Reactor failure defective insulation etc AC power failure 7 High Pressure Switch failure Blown fuse 8 Overload Relay failure Power Relay failure 9 Magnetic Coil failure defective insulation short circuit etc Outdoor Fan Motor failure defective insulation etc 10 Compressor failure defective insulation etc 3 1 Condition E01 Troubleshooting Serial Communication Outdoor Unit Indoor Unit _ M Fig 1 Fig 2 Is the voltage of about DC12V or more given between the terminals 2 and 3 on the outdoor unit terminal strip Serial Communication Line Fig 1 1 Turn OFF the power and wait until the power lamp LED No of the outdoor unit controller is turned OFF 2 Disconnect the cable from the terminal 3 on the indoor unit termin
113. poisonous gas Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before starting the test run Do not leak refrigerant while piping work for an installation or re installation and while repairing refrigeration parts Handle liquid refrigerant carefully as it may cause frost bite When Servicing Turn the power OFF at the main power box mains before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from any moving parts Clean up the site after you finish remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced 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 Others CAUTION Ventilate any enclosed areas when installing or testing the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas Confirm upon completing installation that no refrigerant gas is leaking If escaped gas comes in contact with a stove gas water heater electric room heater or other heat source it can produce dangerously toxic gas Do not touch the air inlet o
114. pressurized gas and never use a refrigerant other than R410A Also do not use oxygen or any flammable gas 5 Evacuation e Use a solenoid valve installed vacuum pump so that even if power is cut off in the middle of evacuation of air due to a power interruption the valve will prevent the pump oil from flowing back e The equipment may be damaged if moisture remains in the tubing thus carry out the evacuation thoroughly e When using a vacuum pump with exhaust air volume more than 0 883 cu ft min and ultimate vacuum pressure rate of 50 micron Hg Standard time for evacuation 1 Detect leaks OK 2 Recover refrigerant OK 3 Weld leaking points OK 4 Check for sealing OK 5 Evacuation OK 6 Recharge Length of tubing Less than 33 ft 10 m More than 33 ft 10 m More than 10 minutes More than 15 minutes 6 Recharging Recharge unit in the same manner explained on the previous page 5 Recharging 64 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 Follow instructions given in 11 6 In Case Refrigerant is Leaking and completely carry out repairs Only then should you recharge the refrigerant
115. r DB temp F C 3 Indoor discharge air performance chart 6 TTT 60 8 16 2 14 53 6 12 kai ink gu 50 0 1 0 TL 46 4 8 ok BL Indoor discharge air temperature F C B 42 8 6 LL 6 20 1 15 1 0 5 5 0 15 20 25 30 85 40 Outdoor inlet air DB temp F C NOTE e Check each performance value in test run mode Electrical performance values represent a combined indoor outdoor value 29 5 2 Cooling Capacity Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKU CU KS18NKUA Power Supply 230V Single Phase 60Hz Cooling Capacity RATING CAPACITY 17 500 BTU h AIR FLOW RATE 524 CFM INDOOR OUTDOOR ENT TEMP F C AMBIENT TEMP F C 105 115 Ee 3 a 9 4 0 0 40 6 46 1 72 22 2 I I 76 24 4 80 26 7 84 28 9 88 31 1 16 040 72 22 2 9 960 76 24 4 80 26 7 84 28 9 88 31 1 72 22 2 I I 76 24 4 80 26 7 84 28 9 88 31 1 16 840 72 22 2 5 690 76 24 4 80 26 7 84 28 9 88 31 1 63 2 67 A 71 T 76 244 80 26 7 84 28 9 88 31 1 TC Total Cooling Capacity BTU h SHC Sensible Heat Capacity BTU h 1 Rating conditions Indoor Unit Entering Air Temp 80 F 26 7 C DB 67 F 19 4 C WB Outdoor Ambient Temp 95 F 35 C DB 2 Above data does not take Freeze Prevention Protection du
116. r the sharp aluminum fins of the outdoor unit You may get injured X Do not sit or step on the unit you may fall down accidentally Do not stick any object into the FAN CASE You may be injured and the unit may be damaged 1 General This booklet briefly outlines where and how to install the 6 Sabre saw or key hole saw air conditioning system Please read over the entire set 7 Hacksaw of instructions for the indoor and outdoor units and make 8 Core bits sure all accessory parts listed are with the system before 9 Hammer beginning 10 Drill 11 Tube cutter 1 1 Tools Required for Installation not supplied 12 Tube flaring tool 1 Standard screwdriver 13 Torque wrench 2 Phillips head screwdriver 14 Adjustable wrench 3 Knife or wire stripper 15 Reamer for deburring 4 Tape measure 5 Carpenter s level 1 2 Accessories Supplied with Unit Table 1 head R t Y anil T PI Tapping screw Phillips Clamp 1 5 32 x 5 8 4x16 mm p Cushion rubber u Remote control holder Packed in the outdoor unit 1 3 Optional Copper Tubing Kit 2 Foamed polyethylene insulation for the specified copper tubes as required to precise length of tubing Wall thickness of the insulation should be not less than 5 16 8 mm Copper tubing for connecting the outdoor unit to the indoor unit is available in kits which contain the narrow and wide tubing fittings an
117. r to the unit until all wiring and tubing are completed or reconnected and checked Highly dangerous electrical voltages are used in this system Carefully refer to the wiring diagram and these instructions when wiring Improper connections and inadequate grounding can cause accidental injury or death Ground the unit following local electrical codes Connect all wiring tightly Loose wiring may cause over heating at connection points and a possible fire hazard To prevent possible hazards from insulation failure the unit must be grounded When Transporting 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000099 Be careful when picking up and moving the indoor and out door units 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 009090990099009009090099999000990909000009090000009990009909090000909900000909000909090000099000009000009090900009090000900990900009000000090900009999009 Select an installation location which is rigid and strong enough to support or hold the unit and select a location for easy maintenance In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the unit s weight It may be necessary to construct a strong wood or metal frame to provide added support In a R
118. re while transferring the refrigerant Fig 3 Do not use the refrigerant if the amount in the charging cylinder is less than 2096 63 Configuration and characteristics of cylinders lt Valve Single valve Charge liquid refrigerant with cylinder in up side down position Fig 1 Single valve with siphon tube Charge with cylinder in normal position Fig 2 L NO Charging cylinder Refrigerant cylinder Fig 3 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 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 2 Recovering refrigerant e Never release the gas to the atmosphere recover residual refrigerant using the refrigerant recovery unit for R410A instead e Do not reuse the recovered refrigerant because its composition will have been altered 3 Welding leaking points e Confirm again that no residual refrigerant exists in the unit before starting welding e Weld securely using flux and wax for R410A e Prevent oxide film from forming inside the tubes utilizing substitution with nitrogen N2 in the refrigerant circuit of the unit Leave ends of tubes open during welding 4 Checking for sealing e Use nitrogen gas for the
119. re at wide tube service valve Operating current A 20 25 30 35 40 Outdoor inlet air DB temp F C 3 Indoor discharge air performance chart Indoor discharge air temperature F C Outdoor inlet air DB temp F C NOTE e Check each performance value in test run mode Electrical performance values represent a combined indoor outdoor value 26 Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKUA Cooling Characteristics RH 46 Indoor fan speed High fan 60Hz 230V 1 Low pressure performance chart 174 at HE ULL ATT ITE I psig MPaG 1 0 131 1 m 0 7 a 0 6 20 e 5 5 0 5 10 15 20 2 5 30 85 40 Outdoor inlet air DB temp F C Low pressure at wide tube service valv 2 Operating current performance chart TT LLL HON HHH l H 20 15 40 pu inet air s FU a LN MJ Operating current A mE EG pe NE L j LL N l ae l M 3 Indoor discharge air performance chart O R an LL Hi Fan gt E o 60 8 16 3 itti u ae fan TT TET Tr ili ill ilf 57 2 14 Pi PT 53 6 12 jin G G a o 5 50 0 10 P ali O lt 46 4 8 68 104 20 15 ctc 5 5 0 5 10 15 20 2 5 38 40 Outdoor inlet air temp F C NOTE e Check each performance value in test run mode
120. ring cooling operation into account For this reason the value may vary from the actual cooling characteristics 3 Above data represents the value when the operation frequency of a compressor is fixed 30 Indoor Unit CS KS24NKU Outdoor Unit CU KS24NKU CU KS24NKUA Power Supply 230V Single Phase 60Hz lt Cooling Capacity gt RATING CAPACITY 24 200 BTU h AIR FLOW RATE 659 CFM INDOOR OUTDOOR ENT TEMP F C AMBIENT TEMP F R 105 115 1 3 9 bs 4 tam 0 40 6 46 1 72 22 2 76 24 4 80 26 7 84 28 9 88 31 1 72 22 2 l I 76 24 4 80 26 7 84 28 9 88 31 1 72 22 2 76 24 4 80 26 7 84 28 9 88 31 1 72 22 2 i 76 24 4 80 26 7 84 28 9 88 31 1 63 2 67 A 71 T 76 244 80 26 7 84 28 9 88 31 1 TC Total Cooling Capacity BTU h SHC Sensible Heat Capacity BTU h 1 Rating conditions Indoor Unit Entering Air Temp 80 F 26 7 C 67 F 19 4 C WB Outdoor Ambient Temp 95 F 35 C DB 2 Above data does not take Freeze Prevention Protection during cooling operation into account For this reason the value may vary from the actual cooling characteristics 3 Above data represents the value when the operation frequency of a compressor is fixed 31 5 3 Cooling Capacity Low Ambient Indoor Unit CS KS18NKU Outdoor Unit CU KS18NKUA Power Supply 230V Single Phase 60Hz
121. rough which refrigerant gas flows Outdoor Condensing Unit The outdoor unit contains the compressor fan motor heat exchanger coil and other electrical components UNIT DISPLAY AND OPERATION BUTTON INDOOR UNIT IMPORTANT OPERATION fl l OPERATION lamp id usi TIMER TIMER lamp Avoid using radio equipment BIN i QUIET 1 74 QUIET lamp such as mobile phone near within 4 ft 1 2m the remote V A control receiver Some radio equipment may cause malfunction of the unit OPERATION H OPERATION button If the trouble happens disconnect power and restart REMOTE CONTROL receiver the air conditioner after a few minutes REMOTE CONTROL receiver This section picks up infrared signals from the remote controller transmitter OPERATION button When the remote controller cannot be used pressing this button enables cooling operation Each time this button is pressed the operation mode changes cyclically Cooling operation T Stop OPERATION lamp This lamp lights when the system is in the continuous DRY orange COOL green and FAN green mode TIMER lamp This lamp lights when the system is being controlled by the timer QUIET lamp This lamp lights during operation in the QUIET mode NOTE The unit s display lamps are dimmed during operation in the NIGHT SETBACK mode REMOTE CONTROLLER DISPLAY A 2 5 Displayed when transmitting data Displayed when indo
122. sing 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 CAUTION Never charge a large amount of liquid refrigerant at once to the unit This may cause damage to the compressor When charging with a refrigerant cylinder use an electronic scale for charging refrigerant In this case if the volume of refrigerant in the cylinder becomes less than 20 of the fully charged amount the composition of the refrigerant starts to change Thus do not use the refrigerant if the amount in the charging cylinder is less than 20 Also charge the minimum necessary amount to the charging cylinder before using it to charge the air conditioning unit Example In case of charging refrigerant to a unit requiring 1 68 Ib 0 76 Kg using a capacity of a 22 Ib 10 Kg cylinder the minimum necessary amount for the cylinder is 1 68 22 x 0 20 6 08 Ib 0 76 10 x 0 20 2 76 Kg For the remaining refrigerant refer to the instructions of the refrigerant manufacturer If using a charging cylinder transfer the specified amount of liquid refrigerant from the refrigerant cylinder to the charging cylinder Prepare an evacuated charging cylinder beforehand CAUTION 9 To prevent the composition of R410A from changing never bleed the refrigerant gas into the atmosphe
123. t Run appears blinking in the remote controller clock display area 4 Each time the 1HR TIMER button is pressed the display changes as shown below Press this button 2 times to change the display to oP 7 Address setting Fig 64 Test run mode Q 2 gi Selfdiagnostic mode Q 1 Address setting mode d x b oP 7 has now been selected for address setting 6 Press the ON OFF operation button on the remote controller Fig 64 Check that the beep signal received sound is heard from the second indoor unit approximately 5 times The sound you hear is the signal that the remote controller address has been changed 7 Finally press the remote controller ACL Reset but ton to cancel the blinking oP 7 display Fig 64 Changing of the second remote controller address is now completed ACL button Fig 63 AIR CONDITIONER 98896 7 SET TEMP N A lt HH mv am ON GY OFFS AM TAA ATA 000 LILI OM O ON 1 OFF O ON OFF operation button TIMER button FANSPEED NIGHTSETBACK FLAP HIGH POWER CANCEL CLOCK SENSOR 12H4P24H O ADR O AC OD ACL Reset button 28 DC1111 0
124. th take out the batteries Dispose of the used batteries at the designated location in compliance with the applicable local ordinances Information for Users on Collection and Disposal of Old Equipment and used Batteries Information on Disposal in other Note for the battery symbol bottom two Countries outside the European Union symbol examples These symbols are only valid in the This symbol might be used in combination European Union If you wish to discard these with a chemical symbol In this case it items please contact your local authorities complies with the requirement set by the or dealer and ask for the correct method of Directive for the chemical involved disposal 10 USING THE REMOTE CONTROLLER CONTINUED How to Use the Remote When using the remote controller always point the unit s transmitter head directly Controller at the air conditioners receiver Air Conditioner Indoor unit Receiver RI SS Remote Controller G Transmitter head Z C Remote Controller Installation The remote controller may be operated either from a non fixed position or from a Position wall mounted position To ensure that the air conditioner operates correctly do not install the remote controller in the following places e n direct sunlight e Behind a curtain or other places where it is covered e More than 26 ft 8 m away from the air conditioner e Inthe path of the air conditioner s airstream e Where it
125. ther the unit is on or off when this button is pressed The indicator in the display indicates that this function is operating Setting procedure Regardless of whether the unit is operating or stopped press the 1 HR TIMER button EG appears in the display Cancellation procedure Press the ON OFF operation button to turn the unit off wait for the unit to stop operating and then press the ON OFF operation button again The 1 Hour Timer function is now cancelled and the unit operates normally ON 1 OFF O QUIET f while the 1 Hour Timer function is operating the 1HR TIMER button is pressed once to cancel the function and then again the unit continues to operate for one hour from that point in time and then stops tis not possible to use the OFF Timer and 1 Hour OFF Timer together Whichever function is set last takes precedence If the 1 HR TIMER button is pressed while the TIMER OFF function operates the OFF Timer is cancelled and the unit will stop operating one hour later 2 Operation together with the The 1 Hour OFF Timer setting is given priority over the DAILY ON OFF REPEAT DAILY ON OFF REPEAT Timer setting TIPS FOR ENERGY SAVING Avoid 7 Do not block neither the air intake nor the air outlet It may cause less performance and may leads to malfunctions Do not let direct sunlight into the room Use sunshades blinds or curtains If the walls and ceiling of the room are warmed by the sun it will take l
126. tween 19 32 25 32 inch 15 20 mm 5 Use washers and spring washers to tightly fasten the windbaffle to the unit 2 Right side 1 Remove the top panel from the unit 2 Use 2 preholes on the panel side R to install the baffle plate 3 Remove the panel side R from the unit by removing the screws These screws are used in step 4 below 4 Put sandwich the windbaffle between the unit and the panel side H then install the windbaffle on the unit using the above screws Be careful not to damage the screw holes Panel en 7 c 2 Panel top x k Panel front AWW Panel side L A t N Fig 5i 2 Air Discharge Baffle 1 Remove the panels front top side L and R from the unit and drill 4 holes of 1 4 inch 6 5 mm at the prescribed positions 2 Install the windbaffle on the unit using field supply bolts and nuts 3 Recommended bolts to be used are 15 64 M6 ISO standard and the recommended length of the bolts is between 13 32 19 32 inch 10 15 mm 4 Use washers and spring washers to tightly fasten the windbaffle to the unit Panel side R Panel top Panel front UY j F Panel side Fig 5j e In order to prevent contact of the bolts and heat exchanger and other parts inside the unit install the windbaffle using bolts from inside the unit and fasten the bolts with nuts from outside the unit e When th
127. unii Pe Power supply codes Conduit Conduit Fig 46 20 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 Flaring Procedure with a Flare Tool 1 Cut the copper tube to the required length with a tube cutter It is recommended to cut approx 12 to 20 30 to 50 cm longer than the tubing length you estimate 2 Remove burrs at the end of the copper tube with a tube reamer or file This process is important and should be done carefully to make a good flare Fig 47 When reaming hold the tube end downward and be sure that no copper scraps fall into the tube Fig 48 3 Remove the flare nut from the unit and be sure to mount it on the copper tube 4 Make a flare at the end of copper tube with a flare tool Figs 49a and 49b Use RIDGID or equivalent A good flare should have the following characteristics inside surface is glossy and smooth edge is smooth tapered sides are of uniform length 5 3 Caution before Connecting Tubes Tightly a sure to apply a sealing cap or water proof tape to prevent dust or water from getting into the tubes before they are used b sure to apply refrigerant lubricant to the match ing surfac

Panasonic CS-KS18NKU Service Manual

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