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Panasonic CS-KE12NB41 Technical & Service Manual

Other manuals for CS-KE12NB41: Installation Instructions Manual

Summary of CS-KE12NB41

  • Page 1

    Technical & service manual cs-ke12nb41 & cz-18bt1u + cu-ke12nk1 cs-ke18nb4uw & cz-18bt1u + cu-ke18nku dc inverter split system air conditioner indoor unit outdoor model no. Product code no. 1 852 361 17 1 852 361 20 outdoor unit cs-ke12nb41 (body) & cz-18bt1u (panel) cs-ke18nb4uw (body) & cz-18bt1u ...

  • Page 2: Safety Precautions

    • before doing repair work, please read the " safety precautions" carefully and fully understand them. • the precautionary items here are divided into " warning" and " caution" items. Items in particular which may cause death or serious injury to the service personnel if the work is not performed co...

  • Page 3

    Warning 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 i...

  • Page 4: Table of Contents

    Table of contents safety precautions table of contents 1. Operating range 2. Specifications 2-1. Unit specifications 2-2. Major component specifications 2-3. Other component specifications 3. Dimensional data 4. Refrigerant flow diagram 4-1. Refrigerant flow diagram 5. Performance data 5-1. Temperat...

  • Page 5

    10. Checking electrical components 10-1. Measurement of insulation resistance 10-2. Checking continuity of fuse on pcb ass'y 11. Refrigerant r410a: special precautions when servicing unit 11-1. Characteristics of new refrigerant r410a 11-2. Checklist before servicing 11-3. Tools specifically for r41...

  • Page 6: 1.  Operating Range

    95 °f db / 71 °f wb 67 °f db / 57 °f wb 80 °f db / 67 °f wb – db / – wb 1. Operating range maximum minimum maximum minimum 115 °f db 0 °f db 75 °f db / 65 °f wb – db / 0 °f wb temperature indoor air intake temp. Outdoor air intake temp. Cooling heating 6.

  • Page 7: 2.  Specifications

    2. Specifications 2-1. Unit specifications indoor unit cs-ke12nb41 & cz-18bt1u outdoor unit cu-ke12nk1 2-1-1. Vertical db-a db-a indoor : hi/me/lo outdoor : hi air filter compressor refrigerant / amount charged at shipment ibs (g) refrigerant control 12.6 1,260 ( 2.5 to 12.6 ) ( 250 to 1,260 ) 11,90...

  • Page 8

    Indoor unit cs-ke12nb41 & cz-18bt1u outdoor unit cu-ke12nk1 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 heating: indoor air temperature 70 °f db outdoor air temperature 47 °f db...

  • Page 9

    Indoor unit cs-ke18nb4uw & cz-18bt1u outdoor unit cu-ke18nku 2-1-2. Vertical db-a db-a indoor : hi/me/lo outdoor : hi air filter compressor refrigerant / amount charged at shipment ibs (g) refrigerant control 8.3 1,860 ( 1.2 to 8.3 ) ( 250 to 1,860 ) 17,500 5.15 ( 4,000 to 17,500 ) ( 1.2 to 5.15 ) c...

  • Page 10

    Indoor unit cs-ke18nb4uw & cz-18bt1u outdoor unit cu-ke18nku data subject to change without notice. Shipping volume net shipping weight ib. (kg) ib. (kg) cu.Ft (m 3 ) inch (mm) dimensions & weight (indoor unit) unit dimensions height width depth individual unit body (cs-ke18nb4uw) panel (cz-18bt1u) ...

  • Page 11

    Indoor unit cs-ke18nb4uw & cz-18bt1u outdoor unit cu-ke18nku 2-1-3. Vertical db-a db-a indoor : hi/me/lo outdoor : hi air filter compressor refrigerant / amount charged at shipment ibs (g) refrigerant control 9.1 1,860 ( 1.2 to 9.1 ) ( 250 to 1,860 ) 17,500 5.15 ( 4,000 to 17,500 ) ( 1.2 to 5.15 ) c...

  • Page 12

    Indoor unit cs-ke18nb4uw & cz-18bt1u outdoor unit cu-ke18nku data subject to change without notice. Shipping volume net shipping weight ib. (kg) ib. (kg) cu.Ft (m 3 ) inch (mm) dimensions & weight (indoor unit) unit dimensions height width depth individual unit body (cs-ke18nb4uw) panel (cz-18bt1u) ...

  • Page 13

    Indoor unit (body) cs-ke12nb41 indoor unit (panel) cz-18bt1u 2-2. Major component specifications 2-2-1. Indoor unit mpzn-12v ... 2 flap motor type stepping motor rating model ... Q'ty coil resistance ohm (ambient temp. 77 °f (25 °c)) each pair of terminal : 380 +/- 7% dc 12v pld-12115st-1 ... 1 ac11...

  • Page 14

    Indoor unit (body) cs-ke18nb4uw indoor unit (panel) cz-18bt1u mp24zn-12v ... 2 flap motor type stepping motor rating model ... Q'ty coil resistance ohm (ambient temp. 77 °f (25 °c)) each pair of terminal : 380 +/- 7% dc 12v aluminum plate fin / copper tube 2 18.1 2.94 (0.273) face area coil rows fin...

  • Page 15

    2-2-2. Outdoor unit control pcb control circuit fuse controls part no. Microprocessor 125v 25a cb-cu-ke12nk1 data subject to change without notice. Pints (cc) wht - blu : blu - red : red - wht : 77.5 77.5 77.5 micro f vac external finish acrylic baked-on enamel finish fv50s ... 0.68 (320) - - intern...

  • Page 16

    Outdoor unit cu-ke18nku control pcb control circuit fuse controls part no. Microprocessor 250v 25a cb-cu-ke18nku data subject to change without notice. Pints (cc) wht - blu : blu - red : red - wht : 77.5 77.5 77.5 micro f vac external finish acrylic baked-on enamel finish fv50s ... 0.74 (350) - - in...

  • Page 17

    2-3. Other component specifications indoor unit cs-ke12nb41 & cz-18bt1u cs-ke18nb4uw & cz-18bt1u outdoor unit cu-ke12nk1 cu-ke18nku 0 32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) 40 60 80 100 120 140 160 180 200 20 50 1 0 2 3 4 5 6 7 8 9 10 59 68 77 86 95 104 ...

  • Page 18: 3.  Dimensional Data

    3. Dimensional data indoor unit cs-ke12nb41 & cz-18bt1u cs-ke18nb4uw & cz-18bt1u 6-5/16 6-11/16 1-3/16 (30) 4-19/32 1-25/32 1-25/32 2-3/32 8-15/32 22-5/8 (575) 11-5/32 (283) 3 6 5 less than 31/32 less than 31/32 3-5/8 22-5/8 (575) 12-7/8 suspension bolt pitch suspension bolt pitch 21-1/32 (534) 21-1...

  • Page 19

    10-13/16 3-19/32 id:23/32 4-id:15/16 21-3/16 6-3/32 4-9/32 2-5/32 narrow tube service valve dia.1/4" (6.35) wide tube service valve dia.3/8" (9.52) 3-19/32 15/32 10-7/16 (265) 11-13/32 12-7/16 outdoor unit cu-ke12nk1 unit : inch (mm) (852-0-0010-12700-0) 28-11/32 (720) 2-1/8 21-9/16 (548) 5/8 19.

  • Page 20

    Narrow tube service valve dia.1/4" (6.35) wide tube service valve dia.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 34-21/32(880) 23-15/16 5-11/32 15/32 11-7/32(285) 12-7/32 13-5/32 11-17/32 id:23/32 4-id:15/16 1-3/8 2-17/32 2-13/32 outdoor unit cu-ke18nku unit : inch (mm)...

  • Page 21

    Compressor accumulator wide tube service valve wide tube narrow tube service valve narrow tube heat e xchanger heat e xchanger muffler capillary tube for split flow cooling cycle (defrosting cycle) heating cycle indoor unit outdoor unit electric expansion valve strainer strainer m muffler o.D. 3/8" ...

  • Page 22

    Compressor 4-way valve accumulator high pressure switch wide tube service valve wide tube narrow tube service valve narrow tube heat e xchanger muffler capillary tube for split flow cooling cycle (defrosting cycle) heating cycle indoor unit outdoor unit electric expansion valve strainer m o.D. 1/2" ...

  • Page 23: 5.  Performance Data

    Hi fan lo fan cooling characteristics (rh : 46%, indoor fan speed : high fan) (60hz, 115v) (1) low pressure performance chart (2) operating current performance chart (3) indoor discharge air performance chart check each performance value in test-run mode. Electrical performance values represent a co...

  • Page 24

    High pressure at wide tube ser vice v alv e psig(mp ag) operating current (a) 13 14 16 17 12 11 15 290 (2.0) 218 (1.5) 363 (2.5) 435 (3.0) 508 (3.5) 23 (-5) 32 (0) 41 (5) 50 (10) 59 (15) 68 (20) 77 (25) 23 (-5) 32 (0) 41 (5) 50 (10) 59 (15) 68 (20) 77 (25) 131 (55) 122 (50) 113 (45) 104 (40) 95 (35)...

  • Page 25

    • check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. Note cooling characteristics (rh : 46%, indoor fan speed : high fan) (60hz, 230v) (1) low pressure performance chart (2) operating current performance chart (3) indoor discharge ...

  • Page 26

    • check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. • overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in heating mode. (refer to "8-2. Protective functions overlo...

  • Page 27

    5-2. Cooling capacity indoor unit : cs-ke12nb41 & cz-18bt1u outdoor unit : cu-ke12nk1 power supply : 115v single phase 60hz 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 : out...

  • Page 28

    Indoor unit : cs-ke18nb4uw & cz-18bt1u outdoor unit : cu-ke18nku power supply : 230v single phase 60hz 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...

  • Page 29

    5-3. Cooling capacity (low ambient) indoor unit : cs-ke12nb41 & cz-18bt1u outdoor unit : cu-ke12nk1 power supply : 115v single phase 60hz tc : total cooling capacity (btu/h) shc : sensible heat capacity (btu/h) 1. 2. Above data represents the value when the operation frequency of a compressor is fix...

  • Page 30

    Indoor unit : cs-ke18nb4uw & cz-18bt1u outdoor unit : cu-ke18nku power supply : 230v single phase 60hz tc : total cooling capacity (btu/h) shc : sensible heat capacity (btu/h) 1. 2. Above data represents the value when the operation frequency of a compressor is fixed. Above data does not take freeze...

  • Page 31

    5-4. Heating capacity indoor unit : cs-ke12nb41 & cz-18bt1u outdoor unit : cu-ke12nk1 power supply : 115v single phase 60hz th : total heating capacity (btu/h) 1. Rating conditions (#) : indoor unit entering air temp. 70 °f (21.1 °c) db : outdoor ambient temp. 47 °f (8.3 °c) db / 43 °f (6.1 °c) wb 2...

  • Page 32

    Indoor unit : cs-ke18nb4uw & cz-18bt1u outdoor unit : cu-ke18nku power supply : 230v single phase 60hz th : total heating capacity (btu/h) 1. Rating conditions (#) : indoor unit entering air temp. 70 °f (21.1 °c) db : outdoor ambient temp. 47 °f (8.3 °c) db / 43 °f (6.1 °c) wb 2. 3. Above data repre...

  • Page 33: 6.  Electrical Data

    6. Electrical data 6-1. Electrical characteristics indoor unit cs-ke12nb41 & cz-18bt1u outdoor unit cu-ke12nk1 indoor unit outdoor unit complete unit fan motor fan motor + compressor performance at 115v single-phase 60hz rating conditions running amp. A 0.21 power input w 18 12.39 1,242 heating cool...

  • Page 34

    Indoor unit cz-ke18nb4u & cz-18bt1u outdoor unit cu-ke18nku indoor unit outdoor unit fan motor fan motor + compressor performance at 230v single-phase 60hz rating conditions running amp. A 0.15 power input w a w a w a w 22 8.15 1,838 rating conditions: indoor air temperature: 80 °f (26.7 °c) db / 67...

  • Page 35

    6-2. Electric wiring diagrams indoor unit cs-ke12nb41 & cz-18bt1u cs-ke18nb4uw & cz-18bt1u 8f a2-5250-46900-2 1 2 3 4 5 6 1 2 3 4 5 6 fm dp f an mo t o r drain pump dcm 6p (blu) 6p (wht) dp 3p (blu) 3p (red) pwm/po w 7p (red) pwm/po w 7p (red) rc 4p (wht) ind 7p (wht) fs 3p (red) flap 5p (wht) r oom...

  • Page 36

    8fa2-5251-12200-2 outdoor unit cu-ke12nk1 36.

  • Page 37

    8fa2-5251-11900-2 outdoor unit cu-ke18nku 25a controller dcfm mv0 rv0 rv1 fan motor 1 2 3 4 5 6 7 blk wht red blu yel blk wht red blu yel blk blk red red w w w w w w w w w w 1 2 3 4 5 5 1 2 4 3 1 2 1 2 1 2 3 4 5 6 7 1 2 4 5 6 7 3 1 2 1 2 3 4 3 4 5 5 1 1 2 2 1 2 1 2 3 3 1 2 1 2 1 2 3 4 1 2 4 3 1 2 3 ...

  • Page 38: 7.  Maintenance

    Acl (reset) button 1hr. Timer button on/off operation button high power button test run mode self-diagnostic mode address setting mode fig. 1 fig. 2 fig. 3 tab acl button 7. Maintenance 7-1. Address setting of the remote controller the address can be set in order to prevent interference between remo...

  • Page 39

    One of the two types of connectors illustrated at left is used. Their basic structure is the same for each. How to disconnect hold the resin connector cover, and pull the connector off. You cannot disconnect the connector by pulling the wire since it is locked inside. Always hold the cover to discon...

  • Page 40

    7-3. Disassembly procedure 7-3-1. Remove the air intake grill. (1) slide the 2 latches each to the corresponding arrow direction. (fig. 1 and fig. 2) open downward the air intake grill located on the latch side. (2) undo the air intake grill drop preventive hook. (fig. 3) undo the 2 hinges for the g...

  • Page 41

    Note 7-3-3. Remove the ceiling panel. (1) open the clamp (4 locations) and remove the 2 lead wires from the clamps. (fig. 6) (2) remove the 4 screws fixing the corner cover (at 3 locations) and indicator cover (at 1 location). (fig. 6) (3) press the center 1 of the cover and remove the cover with th...

  • Page 42

    1 2 3 7-3-4. Remove the indoor air temperature sensor. (1) disconnect the connector cn08 (room 2p) in the control box and remove the indoor air temperature sensor. (fig. 10) 7-3-5. Remove the power box and control box. (1) remove a screw and remove the terminal cover. (fig. 11) (2) remove the 2 scre...

  • Page 43

    1 2 3 (4) disconnect the connector cn07 (dp 2p) in the power box. (fig. 13) remove a screw and disconnect the ground cable. (fig. 13) (5) disconnect the connector cn03 (dcm 6p) in the power box. (fig. 14) (6) remove the 4 screws and remove the power box. (fig. 14) (7) disconnect the connectors cn06 ...

  • Page 44

    For the removal of the following components, perform any work after removing the indoor unit (main body) from the ceiling. Main body lower section heat exchanger sensor drain pump float switch turbo fan fan motor heat exchanger 1. Perform the work after draining the water to prevent the water leakag...

  • Page 45

    7-3-7. Remove the heat exchanger sensor. (1) remove the heat exchanger sensor from the sensor holder. (fig. 19) 7-3-8. Remove the drain pump and float switch. (1) remove the 2 screws (fig. 20) (2) loosen the clamp and disconnect the drain hose from the drain pump. (fig. 20) (3) remove the drain pump...

  • Page 46

    7-3-9. Remove the turbo fan and fan motor. (1) remove a nut and remove the turbo fan. (fig. 22) (2) remove the 2 screws and 3 nuts, and remove the fan motor. (fig. 23) 7-3-10. Remove the heat exchanger. (1) remove the 3 screws. (fig. 24) (2) remove the 3 screws. (fig. 25) (3) remove the heat exchang...

  • Page 47: 8.  Functions

    Emergency operation sensor dry auto cooling/heating operation selecting the operation mode 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 dry operation • dry operation is...

  • Page 48

    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.) high power opera...

  • Page 49

    Overload prevention during heating during heat operation, the temperature of the indoor heat exchanger is used to control the frequency and lessen the load on the compressor before the protective device is activated. Cold-air prevention during heating compressor discharge temperature control during ...

  • Page 50

    This function prevents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current has increased due to an increase in the cooling / heating load, or to a decrease in the power supply voltage. In these cases, operation frequency is reduced or operation...

  • Page 51

    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. High-capacity electrolytic capacitors are used inside...

  • Page 52

    Since the indications cover various units, the corresponding parts listed below may not be present in some models. (1) self-diagnostics lamps (1) drain pump failure (2) fs failure (3) choked drain hose 8512-5261-99100-1 remote control receiver operation lamp timer lamp operation button high power la...

  • Page 53

    (2) if the self-diagnostics function fails to operate check the indoor unit. Is the fuse blown? Replace the controller. Replace the circuit board or the fuse. No indicators illuminate and the indoor fan does not rotate. Check the power voltage. • • normal blown 9-3. Checking the indoor and outdoor u...

  • Page 54

    (3) serial communication error identification procedure refer to "method of self-diagnostics" for the self-diagnostics procedure. (3-1) condition: e01 if the lamps on the main body show the following conditions after the completion of self-diagnostics, a communication error between the indoor unit a...

  • Page 55

    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. ) b 1 2 4 3 5 6 1 2 ...

  • Page 56

    (3-2) condition: e12 troubleshooting serial communication 1. Turn off the power and wait until the power lamp (led) of the outdoor unit controller is turned off. 2. Disconnect the cable from the terminal 3 on the indoor unit terminal strip. (fig. 7) defect in the indoor unit p.C. Board defect in the...

  • Page 57

    [trouble symptom 3] motor rotates for some time (several seconds), but then quickly stops, when the indoor unit operates. (there is trouble in the system that provides feedback of motor rotation speed from the motor to the indoor unit controller.) [trouble symptom 4] fan motor rotation speed does no...

  • Page 58

    9-4-2. Outdoor fan motor this outdoor dc fan motor contains an internal control pcb. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. Perform the trouble diagnosis by test run mode described on installation instructions. [tr...

  • Page 59

    9-5. Noise malfunction and electromagnetic interference an inverter a/c operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices. A noise filter is install...

  • Page 60

    Insulation tester probe clip ground wire terminal plate copper tube or metallic part clip insulation tester probe fig. 1 fig. 2 fig. 3 fig. 4 copper tube or metallic part clip insulation tester probe clip insulation tester probe metallic part from fan motor, compressor and other parts 10. Checking e...

  • Page 61

    Fuse pcb ass'y fig. 5 fig. 6 fuse 10-2. Checking continuity of fuse on pcb ass'y remove the pcb ass'y from the electrical component box. Then pull out the fuse from the pcb ass'y. (fig. 5) check for continuity using a multimeter as shown in fig. 6. 61.

  • Page 62: 11.  Refrigerant R410A:

    11. Refrigerant r410a: special precautions when servicing unit 11-1. Characteristics of new refrigerant r410a 11-1-1. What is new refrigerant r410a? R410a is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its refrigeration capacity and energy efficiency are a...

  • Page 63

    Tubing precautions refrigerant r410a is more easily affected by dust or moisture compared with r22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation. Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in thickn...

  • Page 64

    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 vacuum pump with anti-reverse flow (*1) (solenoid valve-installed type, which prevents oil from flowing ...

  • Page 65

    11-5. In case of compressor malfunction caution should the compressor malfunction, be sure to make the switch to a replacement compressor as quickly as possible. Use only the tools indicated exclusively for r410a. See "11-3. Tools specifically for r410a." 11-5-1. Procedure for replacing compressor (...

  • Page 66: No!

    Valve single valve charge liquid refrigerant with cylinder in up-side-down position. Single valve (with siphon tube) charge with cylinder in normal position. Liquid valve liquid charging cylinder open refrigerant cylinder liquid no! Caution never charge a large amount of liquid refrigerant at once t...

  • Page 67

    Length of tubing evacuation time less than 33 ft. (10 m) more than 10 minutes more than 33 ft. (10 m) more than 15 minutes 11-6. In case refrigerant is leaking caution never attempt to charge additional refrigerant when refrigerant has been leaking from the unit. Follow the procedure described below...

  • Page 68

    11-7. Charging additional refrigerant 11-7-1. When tubes are extended observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state only. 11-8. Retro-fitting existing systems 11-8-1. ...

  • Page 70: Operating Instructions

    Operating instructions cs-ke12nb41 & cz-18bt1u + cu-ke12nk1 cs-ke18nb4uw & cz-18bt1u + cu-ke18nku (852-6-4181-213-00-2) appendix a a-1.

  • Page 71: Split System Air Conditioner

    Split system air conditioner model no. Panasonic corporation 1006 kadoma, kadoma city, osaka, japan 85264181213002 indoor units cs-ke12nb41 cs-ke18nb4uw outdoor units (for single use) cu-ke12nk1 cu-ke18nku (for multiple use) cu-3ke19nbu cu-4ke24nbu cu-4ke31nbu operating instructions before operating...

  • Page 72

    2 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. • microprocessor controlled operation the interior compartment of the remote contr...

  • Page 73

    3 installation location • we recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the installation instructions provided with the unit. • before installation, check that the voltage of the electric supply in your home or office is the sam...

  • Page 74

    4 names of parts this illustration is based on the external view of a standard model. Consequently, the shape may differ from that of the air conditioner which you have selected. This air conditioner consists of an indoor unit and an outdoor unit. You can control the air conditioner with the remote ...

  • Page 75

    5 remote controller (display) (1) operation mode auto ..................................... Heat ...................................... Mild dry .............................. Cool ..................................... Fan ........................................ (2) fan speed automatic operation .....

  • Page 76

    6 remote controller 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. Display information on the operating conditions is displayed while the remote controller is switched on. If the...

  • Page 77

    7 sensor a temperature sensor inside the remote controller senses the room temperature. (cover closed) clock button acl button (all clear) puts the remote controller into pre-operation status. Always press this button after replacing the batteries and setting the s/m switch. On/off operation button ...

  • Page 78

    8 using the remote controller how to install batteries 1. Slide the cover in the direction indicated by the arrow and remove it. 2. Install two aaa alkaline batteries. Make sure the batteries point in the direction marked in the battery compartment. 3. Use a thin object such as the tip of a pen to p...

  • Page 79

    9 operation with the remote controller 1. Automatic operation when the remote controller’s s/m switch is at the “s” (single) position this unit automatically switches between cooling operation and heating operation according to the difference between the room temperature and the temperature setting....

  • Page 80

    10 3. 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, just set the fan speed selector button as...

  • Page 81

    11 • 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”. • high power mode cannot be used when the operation mode is in automatic operation. • when set to high fan speed during heating...

  • Page 82

    12 2. How to set the off time (example) to stop the air conditioner at 11:00 am. 3. How to set the on time (example) to start operation at 7:10 am. 4. How to set daily on/off repeat timer (example) to start operation at 7:10 am. And stop the air conditioner at 11:00 am. • the on/off combination time...

  • Page 83

    13 using the 1-hour off timer 1. 1-hour off timer this function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed. The indicator in the display indicates that this function is operating. Setting procedure: regardless of whe...

  • Page 84

    14 operation without the remote controller 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 type of operation conducted is indicated by the changing color of the operation lamp. Pr...

  • Page 85

    15 air filter the air filter collects dust and other particles from the air and should be cleaned once every 6 months. If the filter gets blocked, the efficiency of the air conditioner drops greatly. The frequency with which the filter should be cleaned depends on the environment in which the unit i...

  • Page 86

    16 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. Operating range the air conditioner is operable within the temperatur...

  • Page 87

    17 specifications model no. • for single use • for single use outdoor unit indoor unit cs-ke12nb41 cu-ke12nk1 11,900 [ 3,000 ~ 11,900 ] 47 single-phase, 115 v, 60 hz 3.50 [ 0.90 ~ 3.50 ] 4.00 [ 0.90 ~ 4.00 ] 13,600 [ 3,000 ~ 13,600 ] - 49 - 21-9/16×28-11/32×10-7/16 (548×720×265) - 34/32/31 - 35/34/3...

  • Page 88

    18 specifications (continued) model no. • for multiple use • for multiple use heating capacity operation sound unit dimensions (h×w×d) net weight power source cooling capacity kw btu/h kw btu/h inch(mm) lbs.(kg) cooling operation (h/m/l) heating operation (h/m/l) db(a) db(a) indoor unit cs-ke18nb4uw...

  • Page 90: Installation Instructions

    Installation instructions cs-ke12nb41 & cz-18bt1u + cu-ke12nk1 cs-ke18nb4uw & cz-18bt1u + cu-ke18nku (852-6-4190-577-00-2) appendix b a-2.

  • Page 91: Installation Instructions

    This air conditioner uses the refrigerant r410a. External diameter of service port r410a: 5/16" split system air conditioner 85264190577002 2011 installation instructions note cv6233187839 contents page important! Please read before starting .................................. 2 1. General .............

  • Page 92

    2 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 part of your job to install or service the system so it operates safely and efficiently. For safe installation and trouble-free op...

  • Page 93

    3 ‡ 8vhwkhioduhphwkrgirufrqqhfwlqjwxelqj ‡ $sso\uhiuljhudqwoxeulfdqwwrwkhpdwfklqjvxuidfhvri the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak- free connection. ‡ &khfnfduhixoo\iruohdnvehiruhvwduwlqjwkhwhvwuxq ‡ 'rqrwohdnuhiuljhudqwzklohslslqjzruni...

  • Page 94

    4 printed on container box for unit & pvc tube connection for drain hose connection remarks q’ty for full-scale installation diagram 1 2 4 4 4 4 2 1 for temporarily suspending indoor unit from ceiling flare insulation for wide / narrow tube connection for wide / narrow tube / flare nut connection fo...

  • Page 95

    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. Indoor unit avoid: dire...

  • Page 96

    6 2-2. Outdoor unit avoid: heat sources, exhaust fans, etc. (fig. 3) damp, humid or uneven locations. Do: choose a place as cool as possible. Choose a place that is well ventilated. Install in a location where at least two sides are unob- structed, so that the flow of air at the intake port or exhau...

  • Page 97

    7 hole-in-anchor concrete insert suspension bolt (m10 or 3/8") hole-in-plug (locally purchased) fig. 6-1 23-5/8"(600mm) 21-1/32"(534mm) ceiling opening dimensions suspension bolt pitch 23-5/8"(600 mm ) 21-1/32"(534 mm ) ceiling opening dimensions suspension bolt pitch drain tube connection port 22-5...

  • Page 98

    8 in cases where it is necessary to raise the height of the drain piping, the drain piping can be raised to a maximum height of 2.78 ft. (850 mm) above the bottom surface of the ceiling. Under no conditions attempt to raise it higher than 2.78 ft. (850 mm) above the bottom surface of the ceiling. Do...

  • Page 99

    9 a must be within the range of 1/2"(13mm) to 23/32"(18mm). (fig. 6-11) if not within this range, malfunction or other trouble may occur. Ceiling opening dimension ceiling side a indoor unit 3-5. Checking the drainage after wiring and drain piping are completed, use the following pro- cedure to chec...

  • Page 100

    10 (2) removing the corner cover and indicator cover a) while lightly pressing the cen- ter of the corner cover, pull up the tab for the screw hole. Use the same procedure to remove the indicator cover. (fig. 6-16) 3-6-2. Installing the ceiling panel (1) hang the temporary latches on the inside of t...

  • Page 101

    11 fig. 6-23 fig. 6-24 fig. 6-25 fit into the holes in the ceiling panel. Place the corner cover so that the 3 tabs then fasten it in place with the supplied screws. Pin hole for ceiling panel hook the grille from dropping hook that prevents can be installed rotated 90 * the grille can be installed ...

  • Page 102

    3-7. Wiring instructions general precautions on wiring (1) before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. (2) provide a power outlet to be used exclusively for each unit, with a power supply disconnect a...

  • Page 103

    13 cross-sectional (a)+(b) (a) power supply wiring length (ft) (c) control fuse or circuit area (awg) (b) power line length (ft) line length (ft) model (#14) (#12) (#14) breaker capacity cu-ke12nk1 131 (max.) 230 (max.) 65 (max.) 20a cu-ke18nku 131 (max.) 230 (max.) 100 (max.) 15a # ... Awg (america...

  • Page 104

    14 when connecting each power wire to the corresponding terminal, fol- low 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 cut...

  • Page 105

    15 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. 11 and 12) (2) using a screwdriver, remove the terminal screw(s) on the terminal plate. (3) using a ring connector fas...

  • Page 106

    16 5. Refrigerant tubing 5-1. Use of the flaring method many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts. 5-2...

  • Page 107

    17 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. 21) b) to fasten the flare nuts, apply specified torque as: table 5 5-5. Insulation of refrigerant tubing to prevent heat loss...

  • Page 108

    Be sure to use a manifold valve for air purging. If it is not available, use a stop valve (field supply) for this purpose. The “hi” knob of the mani- fold valve must always be kept closed. Insulated tubes drain hose clamp hi lo indoor unit outdoor unit manifold valve (exclusively for r410a) pressure...

  • Page 109

    19 (4) with the “lo” knob of the manifold valve open, run the vacuum 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 6 required time for evacuation when 26.4 gal/h (100 liter/h) ...

  • Page 110

    20 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. 29) a)press and hold the high power button and the 1hr. Timer button. B)then p...

  • Page 111

    21 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 ...

  • Page 112

    22 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...

  • Page 113

    23 acl (reset) button 1hr. Timer button on/off operation button high power button 8. Address switch 8-1. Address setting of the remote controller the address can be set in order to prevent interfer- ence between remote controllers when 2 indoor units are installed near each other. The address is nor...

  • Page 114: Operating Instructions

    Operating instructions cz-rd515u (852-6-4181-230-00-1) appendix c a-3.

  • Page 115: Wired Remote Controller

    Wired remote controller model no. Cz-rd515u operating instructions panasonic corporation 1006 kadoma, kadoma city, osaka, japan 85264181230001 cv6233187877 this wired remote controller is designed for both the “cool/dry/heat model” and “cool/dry model” indoor unit. Once the wired remote controller i...

  • Page 116

    2 features • microprocessor controlled operation the interior compartment of the remote controller contains several features to facilitate automatic operation, easy logically displayed for easy use. • 24-hour on or off timer this timer can be set to automatically turn the unit on or off at any time ...

  • Page 117

    3 installation location we recommend that this wired remote controller be installed properly by qualified installation technicians in accordance with the installation instructions provided with the unit. Avoid: to protect the air conditioner from heavy corrosion, avoid installing the outdoor unit wh...

  • Page 118

    4 remote controller display information on the operating conditions is displayed while the remote controller is switched on. If the unit is turned off, only the mode that was set previously is still displayed. Fan speed selector button : the air conditioner automatically decides the fan speeds. : hi...

  • Page 119

    5 sensor a temperature sensor inside the remote controller senses the room temperature. On/off operation button this button is for turning the air conditioner on and off. 1 hr. Timer button (1-hour off timer) : when you press this button, regardless of whether the unit is operating or stopping, the ...

  • Page 120

    6 remote controller (display) (1) operation mode auto ..................................... (only for cool/dry/heat model) heat ...................................... (only for cool/dry/heat model) mild dry .............................. Cool ..................................... Fan ..................

  • Page 121

    7 operation with the remote controller 1. Automatic operation (only for cool/dry/heat model) • single use this unit automatically switches between cooling operation and heating operation according to the difference between the room temperature and the temperature setting. • multiple use the air cond...

  • Page 122

    8 3. 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, just set the fan speed selector button as ...

  • Page 123

    9 setting the timer 1. How to set the present time (example) to set to 9:10 pm. 2. How to set the off time (example) to stop the air conditioner at 11:30 pm. To cancel the setting, press the timer select button twice. 3. How to set the on time (example) to start operation at 7:10 am. To cancel the s...

  • Page 124

    10 using the 1-hour off timer 1. 1-hour off timer this function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed. The indicator in the display indicates that this function is operating. Setting procedure: regardless of whe...

  • Page 126: Installation Instructions

    A-4 installation instructions cz-rd515u (852-6-4190-592-00-0) appendix d.

  • Page 127: Wired Remote Controller

    Parts supplied with the remote controller see table 1. Remote controller installation guidelines ‡ mount the remote controller 3.3 to 4.9 ft. (1 to 1.5 meters) off the floor where it can sense the average temperature of the room. ‡ do not mount the remote controller in a place exposed to direct sunl...

  • Page 128

    2 a. Installing with in-wall junction box (1) install the junction box (locally purchased) into the wall. (figs. 2-a and 3) (2) pass the wire harness through the junction box and conduit. (fig. 3) (3) insert a flathead screwdriver into the 5 tab locations and disconnect the back plate of the remote ...

  • Page 129

    Fig. 8 indicator wire harness ceiling panel terminal cover clamps 7p ind and 4p rc wiring connector 5p flap wiring connector clamping strap flap rc ind 7p 4p 5p flap wiring connector wire harness remote controller wire harness control pcb indicator 7p ind and 4p rc wiring connector putty 3 how to wi...

  • Page 130

    4 fig. 9 fig. 10 fig. 11 on/off operation button 1 hr.Timer button night setback button acl (reset) button sensor button operation lamp timer lamp high power lamp remote control receiver operation button how to test run the air conditioner after turning on the power of the air conditioner, use the r...

  • Page 132

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