Instruction/ maintenance manual of the product CS-KS18NKU Panasonic
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TECHNICAL & SER VICE MANUAL CS-KS18NKU + CU-KS18NKU + CU-KS18NKUA CS-KS24NKU + CU-KS24NKU + CU-KS24NKUA DC INVERTER SPLIT SYSTEM AIR CONDITIONER Indoor Unit Outdoor Model No.
• Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them. • The precautionary items here are divided into " W arning" and " Caution" items.
W arning If refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite. 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.
T able of Contents 1. OPERA TING RANGE 2. SPECIFICA TIONS 2-1 . Un i t Spec i f i cat i ons 2-2 . Ma j or Component Spec i f i cat i ons 2-3 . Other Component Spec i f i cat i ons 3. DIMENSIONAL DA T A 4. REFRIGERANT FLOW DIAGRAM 4-1 . Refr i gerant Flow D i agram 5.
1 1. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SER VICING UNIT 1 1-1 . Character i st i cs of New Refr i gerant R410A 1 1-2 . Checkl i st before Serv i c i ng 1 1-3 . T ools Spec i f i cally for R410A 1 1-4 . Tu b i ng Installat i on Procedures 1 1-5 .
95 °F DB / 71 °F WB 67 °F DB / 57 °F WB 1 . OPERA TING RANGE Maximum Minimum 1 15 °F DB 67 °F DB T emperature Indoor Air Intake T emp . Outdoor Air Intake T emp . Cooling 95 ° 67 °F DB / 57 °F WB Maximum Minimum 1 15 °F DB 0 °F DB T emperature Indoor Air Intake T emp .
2. SPECIFICATIONS 2-1. Un i t Spec i f i cat i ons Indoor Un i t CS-KS18NKU Outdoor Un i t CU-KS18NKU < 230V > DATA SUBJECT TO CHANGE WITHOUT NOTICE .
Indoor Un i t CS-KS18NKU Outdoor Un i t CU-KS18NKU < 208V > DATA SUBJECT TO CHANGE WITHOUT NOTICE . Vert i cal dB-A dB-A Indoor : H i /Me/Lo/Qt* Outdoor : H i A i r F i lter Compressor Refr i gerant / Amount charged at sh i pment Ibs (g) Refr i gerant Control 7 .
Indoor Un i t CS-KS24NKU Outdoor Un i t CU-KS24NKU < 230V > DATA SUBJECT TO CHANGE WITHOUT NOTICE . Vert i cal dB-A dB-A Indoor : H i /Me/Lo/Qt* Outdoor : H i A i r F i lter Compressor Refr i gerant / Amount charged at sh i pment Ibs (g) Refr i gerant Control 10 .
Indoor Un i t CS-KS24NKU Outdoor Un i t CU-KS24NKU < 208V > DATA SUBJECT TO CHANGE WITHOUT NOTICE . Vert i cal dB-A dB-A Indoor : H i /Me/Lo/Qt* Outdoor : H i A i r F i lter Compressor Refr i gerant / Amount charged at sh i pment Ibs (g) Refr i gerant Control 12 .
Indoor Un i t CS-KS18NKU Outdoor Un i t CU-KS18NKUA < 230V > DATA SUBJECT TO CHANGE WITHOUT NOTICE . Vert i cal dB-A dB-A Indoor : H i /Me/Lo/Qt* Outdoor : H i A i r F i lter Compressor Refr i gerant / Amount charged at sh i pment Ibs (g) Refr i gerant Control 7 .
Indoor Un i t CS-KS18NKU Outdoor Un i t CU-KS18NKUA < 208V > DATA SUBJECT TO CHANGE WITHOUT NOTICE . Vert i cal dB-A dB-A Indoor : H i /Me/Lo/Qt* Outdoor : H i A i r F i lter Compressor Refr i gerant / Amount charged at sh i pment Ibs (g) Refr i gerant Control 7 .
Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKUA < 230V > DATA SUBJECT TO CHANGE WITHOUT NOTICE. Vertical dB-A dB-A Indoor : Hi/Me/Lo/Qt * Outdoor : Hi Air Filter Compressor Refrigerant / Amount charged at shipment Ibs (g) Refrigerant Control 10.
Indoor Un i t CS-KS24NKU Outdoor Un i t CU-KS24NKUA < 208V > DATA SUBJECT TO CHANGE WITHOUT NOTICE . Vert i cal dB-A dB-A Indoor : H i /Me/Lo/Qt* Outdoor : H i A i r F i lter Compressor Refr i gerant / Amount charged at sh i pment Ibs (g) Refr i gerant Control 12 .
Indoor Unit CS-KS18NKU MP24Z3 Flap Motor Type Stepping Motor Rating Model Coil Resistance Oh m (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 400 +/- 7% DC 12V Aluminum Plate Fin / Copper Tube 2 19.5 3.07 (0.285) Face Area Coil Rows Fins per inch Heat Exchanger Coil ft 2 (m 2 ) DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Indoor Unit CS-KS24NKU MP24Z3 Flap Motor Type Stepping Motor Rating Model Coil Resistance Oh m (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 400 +/- 7% DC 12V Aluminum Plate Fin / Copper Tube 2 19.5 3.07 (0.285) Face Area Coil Rows Fins per inch Heat Exchanger Coil ft 2 (m 2 ) DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Outdoor Unit CU-KS18NKU 2-2-2 . Outdoor Unit Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CU-KS18NKU DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VAC External Fini s h Acrylic baked-on enamel finish FV50S .
Outdoor Unit CU-KS24NKU Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CU-KS24NKU DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) - Micro F VAC External Fini s h Acrylic baked-on enamel finish FV50S ... 1.49 (700) - - Internal Controller Yes Yes Aluminum Plate Fin / Copper Tube 2 18.
Outdoor Unit CU-KS18NKUA Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CU-KS18NKUA DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VAC External Fini s h Acrylic baked-on enamel finish FV50S .
Outdoor Unit CU-KS24NKUA Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CU-KS24NKUA DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) - Micro F VAC External Fini s h Acrylic baked-on enamel finish FV50S ... 1.49 (700) - - Internal Controller Yes Yes Aluminum Plate Fin / Copper Tube 2 18.
2-3 . Other Component Specification s Indoor Unit CS-KS18NKU CS-KS24NKU Outdoor Unit CU-KS18NKU CU-KS24NKU CU-KS18NKUA CU-KS24NKUA 0 32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (6.
3 . DIMENSIONAL DA T A Indoor Unit CS-KS18NKU CS-KS24NKU CS-KS18NKU CS-KS24NKU Unit: inch(mm) (852-0-0010-216-00-0) 22.
Un i t : i nch(mm) Narrow tube serv i ce valv e d i a . 1/4 " (6 . 35) W i de tube serv i ce valve d i a . 1/2 " (12 . 70) 4-3/8 2-5/32 6-17/32 5-23/32 3/32 26-3/8 (670) 23/32 1-13/16 34-21/.
W i de tube serv i ce valve d i a . 5/8 " (15 . 88) Narrow tube serv i ce valve d i a . 1/4 " (6 . 35) 4-7/16 5-29/32 2-1/32 4-1/2 29-1/8 (740) 23/32 1-21/32 35-7/16(900) 23-15/16 5-1 1/32 1.
Compressor Accumulator W i de tube serv i ce valve W i de tube Narrow tube serv i ce valve Narrow tube Heat exchanger Heat exchanger Muffler Cool i ng cycle Indoor un i t Outdoor un i t Electr i c expans i on valve M *1 *1 O . D . 1/2 " (12 . 7mm) .
5. PERFORMANCE DA T A 5-1. T emperature Charts Indoor Un i t CS-KS18NKU Outdoor Un i t CU-KS18NKU • Check each performance value i n test-run mode . Electr i cal performance values re present a comb i ned i ndoor/outdoor value .
Indoor Un i t CS-KS18NKU Outdoor Un i t CU-KS18NKUA • Check each performance value i n test-run mode . Electr i cal performance values re present a comb i ned i ndoor/outdoor value .
Indoor Un i t CS-KS24NKU Outdoor Un i t CU-KS24NKU Cool i ng Character i st i cs (RH : 46%, Indoor fan speed : H i gh fan) (60Hz, 230V) (1) Low pressure performance chart (2) Operat i ng current perfo.
Indoor Un i t CS-KS24NKU Outdoor Un i t CU-KS24NKUA Cool i ng Character i st i cs (RH : 46%, Indoor fan speed : H i gh fan) (60Hz, 230V) (1) Low pressure performance chart (2) Operat i ng current perf.
Indoor Un i t : CS-KS18NKU Outdoor Un i t : CU-KS18NKU / CU-KS18NKUA Power Supply : 230V S i ngle Phase 60Hz < Cool i ng Capac i ty > 5-2. Cool i ng Capac i ty TC : Total Cool i ng Capac i ty (BTU/h) SHC : Sens i ble Heat Capac i ty (BTU/h) 1 . Rat i ng cond i t i ons (#) : Outdoor Amb i ent Temp .
Indoor Un i t : CS-KS24NKU Outdoor Un i t : CU-KS24NKU / CU-KS24NKUA Power Supply : 230V S i ngle Phase 60Hz < Cool i ng Capac i ty > TC : Total Cool i ng Capac i ty (BTU/h) SHC : Sens i ble Heat Capac i ty (BTU/h) 1 . Rat i ng cond i t i ons (#) : Outdoor Amb i ent Temp .
Indoor Un i t : CS-KS18NKU Outdoor Un i t : CU-KS18NKUA Power Supply : 230V S i ngle Phase 60Hz < Cool i ng Capac i ty (Low Amb i ent) > 5-3. Cool i ng Capac i ty (Low Amb i ent) TC : Total Cool i ng Capac i ty (BTU/h) SHC : Sens i ble Heat Capac i ty (BTU/h) 1 .
Indoor Un i t : CS-KS24NKU Outdoor Un i t : CU-KS24NKUA Power Supply : 230V S i ngle Phase 60Hz < Cool i ng Capac i ty (Low Amb i ent) > TC : Total Cool i ng Capac i ty (BTU/h) SHC : Sens i ble Heat Capac i ty (BTU/h) 1 . 2 . Above data represents the value when the operat i on frequency of a compressor i s f i xed .
Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 80°F (26.7°C) Fan speed : High Cooling : Flap angle 0 , : Axis air velocity 0 : Flap angle 30 , : Axis air velocity 30 5-4.
Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 80 °F (26.7 °C ) Fan speed : High Cooling : Flap angle 0 , : Axis air velocity 0 : Flap angle 30 , : A.
6. ELECTRICAL DA T A 6-1. Electrical Characteristics Indoor Unit CS-KS18NKU Outdoor Unit CU-KS18NKU Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.3 Power input W A W A W A W 32 6.
Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKU Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp.
8FA2-5251-11000-2 6-2. Electric Wiring Diagrams Indoor Unit CS-KS18NKU CS-KS24NKU WARNING To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.
8FA2-5251-12000-2 Outdoor Unit CU-KS18NKU CU-KS18NKUA WARNING To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.
8FA2-5251-12800-2 Outdoor Unit CU-KS24NKU WARNING To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.
8FA2-5251-12700-2 Outdoor Unit CU-KS24NKUA WARNING To avoid electrical shock hazard, be sure to disconnect power before checking, servicing and/or cleaning any electrical parts.
1HR. TIMER button ON/OFF operation button ACL (Reset) button QUIET button 7 . MAINTENANCE 7-1 . Addre ss 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.
One of the two types of connectors illustrated at left is used. Their basic structure is the same for each. How to Di s connect Hold the resin connector cover, and pull the connector off. You cannot disconnect the connector by pulling the wire since it is locked inside.
Emergency operation SENSOR DR Y During DRY operation, the system adjusts the room temperature and fan speed according to the conditions in the room, in order to maintain a comfortable room environment. SENSOR DR Y operation DRY operation is as shown in the figure below .
HIGH POWER NIGHT SETBACK Lamp colors Timer backup 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 controller . (It can be set regardless of the temperature and fan speed settings.
Compressor discharge temperature control 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).
1HR. TIMER button ON/OFF operation button ACL (Reset) button QUIET button < Clock display > Test run mode Self-diagnostics mode 9. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE) 9-1. Precautions before Performing Inspection or Repair NOTE After checking the self-diagnostics monitor , turn the power OFF before starting inspection or repair .
Since the indications cover various units, the corresponding parts listed below may not be present in some models. REMOTE CONTROL receiver (1) OPERATION lamp (2) TIMER lamp (3) QUIET lamp OPERATION button INDOOR UNIT (1) Self-diagnostics Lamps INDICA TION ON INDOOR UNIT .
(2) If the s elf-diagno s tic s function fail s to operate Check the indoor unit . I s the fu s e blown? Replace the controller . Replace the circuit board or the fu s e . No indicators illuminate and the indoor fan does not rotate. Check the power voltage.
9-3 . Checking the Indoor and Outdoor Unit s (1) Checking the indoor unit (2) Checking the outdoor unit U s ing the TEST/T-RUN terminal s Control No . Check item s (unit operation) T -RUN : T est run (compressor and fan motor turn ON). TEST/MV : Compresses time to 1/60th (accelerates operation by 60 times faster than normal).
(3) Serial Communication Error Identification Procedure Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure. (3-1) Condition: E01 < Before the Operation > If the l.
What is the latest self-diagnosis result ? Condition: E12 Defect in the outdoor unit P .C. board. Condition: E01 Defect or connection error in the inter-unit cable Defect in the indoor unit P .C. board ( Continued from the previous page A. ) A ( Continued from the previous page B.
(3-2) Condition: E12 T roubleshooting Serial Communication 1. Turn of f the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF . 2. Disconnect the cable from the terminal 3 on the indoor unit terminal strip. (Fig. 7) Defect in the indoor unit P .
[T rouble 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 .) [T rouble symptom 4] Fan motor rotation speed does not change during indoor unit operation.
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 T est Run mode described on Installation Instructions.
9-5. Noise Malfunction and Electromagnetic Interference An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the ef fects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices.
Insulation tester Probe Clip Ground wire Terminal plate Copper tube or metallic part Clip Insulation tester Probe Fig . 1 Fig . 2 Fig . 3 Fig . 4 Copper tube or metallic part Clip Insulation tester Probe Clip Insulation tester Probe Metallic part From fan motor, compressor and other parts 10 .
Fuse PCB Ass ' y Fig . 5 Fig . 6 Fuse 10-2 . Checking Continuity of Fu s e on PCB A ss 'y Remove the PCB Ass ' y from the electrical component box. Then pull out the fuse from the PCB Ass ' y. (Fig. 5) Check for continuity using a multimeter as shown in Fig.
11 . REFRIGERANT R410A : SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1 . Characteri s tic s of New Refrigerant R410A 11-1-1 . What i s New Refrigerant R410A? R410A i s a new refrigerant that contain s two type s of p s eudo-non-azeotropic refrigerant mixture .
Tubing precaution s Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation. Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.
11-3. Tools Specifically for R410A For servicing, use the following tools for R410A Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Refrigerant recovery unit Vacu.
11-5 . In Ca s e of Compre ss or Malfunction CAUTION Should the compre ss or malfunction, be s ure to make the s witch to a replacement compre ss or a s quickly a s po ss ible . U s e only the tool s indicated exclu s ively for R410A . See "11-3 .
Valve Single valve Charge liquid refrigerant with cylinder in up-side-down position. Single valve (with s iphon tube) Charge with cylinder in normal position. Liquid Valve Liquid Charging cylinder Open Refrigerant cylinder Liquid NO! CAUTION Never charge a large amount of liquid refrigerant at once to the unit .
Length of tubing Evacuation time Le ss than 33 ft . (10 m) More than 10 minutes More than 33 ft . (10 m) More than 15 minutes 11-6 . In Ca s e Refrigerant i s Leaking CAUTION Never attempt to charge additional refrigerant when refrigerant ha s been leaking from the unit .
11-7 . Charging Additional Refrigerant 11-7-1 . When Tube s 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 s tate only .
Operating Instructions CS-KS18NKU + CU-KS18NKU + CU-KS18NKUA CS-KS24NKU + CU-KS24NKU + CU-KS24NKUA (852-6-4181-210-00-1) APPENDIX A A-1.
This air conditioner uses the refrigerant R410A. Split System Air Conditioner Model No. Panasonic Corporation 1006 Kadoma, Kadoma City, Osaka, Japan 85264181210001 Indoor Units CS-KS18NKU CS-KS24NKU O.
2 FEA TURES This air conditioner is an in v er ter type unit that automa tically adjusts capability as appropr iate . Details on these functions are provided below; ref er to these descr iptions when using the air conditioner .
3 INST ALLA TION LOCA TION • W e recommend that this air conditio ner be installed pr operl y by qualified installation technicians in accor da nce with the Instal lation Instructions pro vided with the unit.
4 • T o prevent possible hazar ds from insulation failu re, the unit must be gro unded. • Do not clean in side the indoor a nd outdoor units b y users. Engage authorized dealer or specialist f or clea ning. • In case of malfunction of this appliance, do not repair by yourself .
5 NAMES OF P AR TS This illustration is based on the e xternal view of a standard model. Consequently , the shape may d iff er from that of the air conditioner which y ou hav e selected. This air conditioner consists of an indoor unit and an ou tdoor unit.
6 UNIT DISPLA Y AND OPERA TION BUTT ON REMO TE CONTROL receiver This section picks up infra red signals from the remote controller (tr ansmitter). OPERA TION b utton When the remote con troller cannot be used, pre ssing this button enables co oling operation.
7 REMO TE CONTR OLLER (DISPLA Y) (1) Operation mod e MILD DR Y .......... .................... COOL ........................ ............. F AN ....... .......................... ....... (2) F an sp eed A utomatic operation ............... HIGH ......
8 REMO TE CONTR OLLER The illustration abov e pictures the remote controller after the co ver has been opened. T ransm itter When y ou press the buttons on the remot e controller , the mark appears in the displa y to transmit the sett ing changes to the receiv er in the air conditioner .
9 REMO TE CONTR OLLER (CONTINUED) T emperature setting b uttons (TEMP .) Press the button to increa se the set temperature . Press the button to re duce the set temperature . The temperat ure setting changes by 1 °C or 2 °F each time one of the TEMP .
10 REMO TE CONTR OLLER (CONTINUED) USING THE REMO TE CONTR OLLER T emperature Displa y Selector button This s witches the temperature display between °C and °F . Time Display Selector button This s witches the time displa y betwee n 24-hour time and 12-hou r time.
11 USING THE REMO TE CONTR OLLER (CONTINUED) How to Use the Remote Controller When using the remote contro ller , alwa ys point the un it’ s transmitter head directly at the air conditioner’ s receiver .
12 OPERA TION WITH THE REMO TE CONTR OLLER 1. Operation Check th at the circuit breake r on the power panel is tur ned on. Press the setting buttons as described below and change th e settings as desired. STEP 1 Press the MODE selector button a nd select the de sired mode .
13 OPERA TION WITH THE REMO TE CONTROLLER (CONTINUED) • Choose the best position in the room f or the remote controller , which also acts as the sensor f or room comf or t and tran smits the oper ating instr uctions . Once you’v e f ound this best position, alwa ys ke ep the remote controller there.
14 OPERA TION WITH THE REMO TE CONTROLLER (CONTINUED) 4. Night Setback Mode Night Setbac k Mode is used for sa ving energy . Press the NIGHT SETBA CK b utton while unit is operating. (e xcept F AN mode) The mark appears in the displa y . T o releas e the night setbac k functio n, press the NIGH T SETBA CK b utton again.
15 OPERA TION WITH THE REMO TE CONTROLLER (CONTINUED) 5. QUIET Mode QUIET Mode is used to redu ce the fa n sound of the indoor unit. Press the QUIET b utton. The mark appears in the displa y . T o canc el, press QUIET b utton again. • In QUIET Mode, the fan r otates at a slower speed than the fan sp eed setting.
16 SPECIAL REMARKS How it w orks? • Once the room temper ature reaches the le vel that w as set, the unit’ s operation frequency is changed automatically . • During DRY oper ation, the fan speed automatically runs at lower speed f or providing a comf ortable breez e.
17 SETTING THE TIMER In the descriptions below , the follo wing se ttings are used for the temperature and time indicator selector button on the bottom front sectio n of the remote controller . • T emperature: °F • Time: AM, PM 1. How to set the p resent time (Example) T o set to 10:30 pm.
18 SETTING THE TIMER (CONTINUED) 3. How to set the ON time (Example) T o start op eration at 7:10 am. 4. How to set D AIL Y ON/OFF REPEA T timer (Example) T o star t oper ation at 7:10 am. and stop the air conditioner at 11:00 am. T o cancel a timer pr ogram • Press the CANCEL button.
19 USING THE 1-HOUR OFF TIMER TIPS FOR ENERGY SA VING 1. 1-Hour OFF Timer This functi on causes the u nit to operat e for one hour an d then stop, regard less of whether the unit is on or off when this button is pressed. The indicator in the displa y indicates that this function is operating.
20 ADJUSTING THE AIRFLO W DIRECTION 1. Horizontal The horizontal airflo w can be adjusted by mo ving the v er tical v anes with y our hands to the left or right. When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifyin g operation.
21 OPERA TION WITHOUT THE REMO TE CONTR OLLER CARE AND CLEANING INDOOR UNIT If y ou have lost the remote contr oller or it has troub le, f ollow the steps belo w . When the air conditioner is not runnin g Each time the OPERA TION button is pr essed, the operat ion mode changes cyclically .
22 CARE AND CLEANING (CONTINUED) Filter The f ilter behind the air intake grille should be check ed and cleaned at least once ev er y two w eeks. How to r emove the filter 1. Grasp both ends of the air intake g rille, and remove it b y opening to wards the front and pulling tow ards you.
23 CARE AND CLEANING (CONTINUED) WIRED REMO TE CONTROLLER Cleaning the main unit and Remote Contr oller • Wipe clean using a soft, dr y cloth. • T o remov e stubborn dir t, moisten a cloth in warm water no hotter than 104 °F , wring thoroughly , and then wipe.
24 TR OUBLESHOO TING (BEFORE CALLING FOR SER VICE) If your air conditioner does not work properly , first chec k th e f ollowing points bef ore requesting ser vice.
25 SPECIFICA TIONS Model No. Heating Capacity Operation Sound Unit Di m ensions (H×W×D) (Indoor unit : Include panel) Net W eight P ow er Source Cooling Capacity kW BTU/h kW BTU/h inch( mm ) lbs.(kg) Cooling Operation Outdoor (Hi) Indoor(H/M/L) Outdoor (Hi) Indoor(H/M/L) Heating Operation dB(A) dB(A) Model No.
INSTALLATION INSTRCTIONS CS-KS18NKU + CU-KS18NKU + CU-KS18NKUA CS-KS24NKU + CU-KS24NKU + CU-KS24NKUA (852-6-4190-576-00-0) APPENDIX B A-2.
This air conditioner uses the refrigerant R410A. External diameter of service port R410A: 5/16" Split System Air Conditioner 85264190576000 2011 INST ALLA TION INSTRUCTIONS NOTE CV6233187204 Contents Page IMPORT ANT! Please Read Before Starting .
2 IMPORT ANT! Please Read Before Starting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently .
3 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ $SSOUHIULJHUDQWOXEULFDQWWRWKHPDWFKLQJVXUIDFHVRI the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak- free connection.
4 1. General This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning.
5 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.
6 2-2. Outdoor Unit A VOID: heat sources, exhaust fans, etc. (Fig. 4) damp, humid or uneven locations. DO: choose a place as cool as possible. choose a place that is well ventilated. allow enough room around the unit for air intake/ exhaust and possible maintenance.
7 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.
8 (1) Recommended dimensions of the baffle plates D F E C J H L I B K Q R A G O (3- 6.5 mm) 3- 1/4" (2- 6 mm) 2- 15/64" A B H C E F K I J G G D (4- 6.5 mm) 4- 1/4" For Air Intake For Air Discharge Material to be used: Metal plate with corrosion protection treatment Plate thickness: 0.
9 (3) Installation procedure P anel top P anel front P anel side R P anel side L Fig. 5j 1. Air Intake Baffle (1) Left side 1. Remove the top panel from the unit. 2. Remove the panel side L, and drill 3 holes of ø1/4 inch (6.5 mm) at the prescribed positions.
10 Set screw only f or transportation Fig. 6 Rear panel marks Fig. 7 Left tubing Right tubing Downward tubing Right-rear tubing (recommended) Left-rear tubing Fig. 8 3. How to Install the Indoor Unit 3-1. Remove the Rear Panel from the Unit (1) Remove and discard the set screw on the rear panel.
11 Indoor side Outdoor side Hole should be made at a slight downward slant to the outdoor side. NO TE Fig. 10 Plastic cov er INSIDE OUTSIDE W all Slight angle PVC pipe (Locally purchased) Fig. 12 PVC pipe (Locally purchased) Cut at sli g ht an g le Fig.
12 3-4. Remove the Grille to Install the Indoor Unit 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 (1) Grasp both ends of the air intake grille, and remove it by opening towards the front and pulling towards you.
13 3-5. Shape the Indoor Side T ubing (1) Arrangement of tubing by direction a) Right or left tubing Cut out the corner of the right/left frame with a hacksaw or the like. (Figs. 20 and 21) b) Right-rear or left-rear tubing In this case, the corner of the frame need not be cut.
14 (A)+(B) (A) Power Supply Wiring Length (ft) (C) Control Fuse or Circuit AW G (B) Power Line Length (ft) Line Length (ft) Model (#14) (#12) (#14) Breaker Capacity CU-KS18NKU, CU-KS18NKUA 131 (Max.) 230 (Max.) 100 (Max.) 15A CU-KS24NKU 131 (Max.) 230 (Max.
15 3-8. Wiring Instructions for Inter-unit Connections (1) Insert the inter-unit wiring (according to local codes) into the through-the-wall PVC pipe. Run the wiring toward the indoor side allowing approx. 10" (25 cm) to extend from the wall face.
16 When connecting each power wire to the corresponding terminal, follow the instructions “How to connect wiring to the terminal” and fasten the wire securely tight with the fixing screw of the terminal plate.
17 3-9. Mounting (1) T o install the indoor unit, mount the indoor unit onto the 2 tabs on the upper part of the rear plate. (2) Hold down the air discharge outlet and press the lower part of the indoor unit until it clicks to securely fasten to the 2 tabs on the lower part of the rear plate.
18 Hole in wall Bent part Narrow tube Wide tube Rear panel Fig. 38 Drain cap Drain hose Fig. 39 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.
19 T o unmount indoor unit Press the 2 marks on the lower part of the indoor unit and unlatch the tabs. Then lift the indoor unit and unmount. (Fig. 42) 3-10. Drain Hose a) The drain hose should be slanted downward to the outdoors. (Fig. 43) b) Never form a trap in the course of the hose.
20 4. How to Install the Outdoor Unit First refer to Section 2. Installation Site Selection. 4-1. Wiring Instructions for the Outdoor Unit Regulations on wire size differ from locality to locality . For field wiring requirements, please refer to your local elec- trical codes.
21 5. Refrigerant T ubing 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.
22 5-4. Connecting T ubing between Indoor and Outdoor Units a) Tightly connect the indoor side refrigerant tubing exten- ded from the wall with the outdoor side tubing.
23 6. Air Purging Air and moisture remaining in the refrigerant system have undesirable effects as indicated below . Therefore, they must be purged completely .
24 (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 again.
25 How to T est 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 T est Run mode. (Fig. 59a) a) Press and hold the QUIET button and the 1HR.
26 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.
27 7 . Remote Controller Installation Position The remote controller can be operated from either a non-fixed position or a wall-mounted position. T o ensure that the air conditioner operates correctly.
28 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.” T o set a dif ferent address, it is necessary to change the address on the second remote controller .
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DC1111-0.
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If you have not bought Panasonic CS-KS18NKU yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Panasonic CS-KS18NKU - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Panasonic CS-KS18NKU you will learn all the available features of the product, as well as information on its operation. The information that you get Panasonic CS-KS18NKU will certainly help you make a decision on the purchase.
If you already are a holder of Panasonic CS-KS18NKU, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Panasonic CS-KS18NKU.
However, one of the most important roles played by the user manual is to help in solving problems with Panasonic CS-KS18NKU. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Panasonic CS-KS18NKU along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
