Panasonic CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKU Technical & Service Manual Download Page 41

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Split System Air Conditioner

Model No.

Panasonic Corporation

1006 Kadoma, Kadoma City, Osaka, Japan

85264181216001

Indoor Units

CS-MKS9NB4U
CS-MKS12NB4U

Outdoor Units

CU-3KS19NBU
CU-4KS24NBU
CU-4KS31NBU

Operating Instructions

Before operating the unit, read these operating instructions thoroughly and keep them for future reference.

CV6233187624

This air conditioner uses the refrigerant R410A.

Ceiling Panel

CZ-18BT1U

Summary of Contents for CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKU

Page 1: ...Indoor Unit 1 852 361 08 1 852 361 15 1 852 361 09 1 852 361 15 1 852 361 06 1 852 361 15 9 000BTU h 11 900BTU h 17 500BTU h CS MKS9NB4U CZ 18BT1U CS MKS12NB4U CZ 18BT1U CS KS18NB4UW CZ 18BT1U Product Code No Body Panel Capacity Indoor Model No Body Panel TECHNICAL SERVICE MANUAL REFERENCE NO SM700881 CS MKS9NB4U Body CZ 18BT1U Panel CS MKS12NB4U Body CZ 18BT1U Panel CS KS18NB4UW Body CZ 18BT1U Pa...

Page 2: ...ire 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...

Page 3: ...on Caution Do not wash the air conditioner with water as this may cause an electric shock or fire 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...

Page 4: ...ctive Functions 8 TROUBLESHOOTING BEFORE CALLING FOR SERVICE 8 1 Precautions before Performing Inspection or Repair 8 2 Method of Self Diagnostics 8 3 Checking the Indoor and Outdoor Units 8 4 Trouble Diagnosis of Fan Motor 8 5 Noise Malfunction and Electromagnetic Interference APPENDIX A Operating Instructions CS MKS9NB4U CZ 18BT1U CS MKS12NB4U CZ 18BT1U APPENDIX B Operating Instructions CS KS18N...

Page 5: ...APPENDIX D Operating Instructions CZ RD515U APPENDIX E INSTALLATION INSTRUCTIONS CZ RD515U A 4 A 5 Page 5 ...

Page 6: ...MULTI OUTDOOR UNITS CS MKS9NB4U CZ 18BT1U CS MKS12NB4U CZ 18BT1U CS KS18NB4UW CZ 18BT1U 3 Room CU 3KS19NBU YES YES YES 4 Room CU 4KS24NBU YES YES YES 4 Room CU 4KS31NBU YES YES YES Indoor Unit Multi Outdoor Unit 6 ...

Page 7: ...95 F DB 71 F WB 67 F DB 57 F WB 1 OPERATING RANGE Maximum Minimum 115 F DB 14 F DB Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling 7 ...

Page 8: ...ltage Rating kW Total Capacity Semi Concealed Type Indoor Unit 230V Type 221 376 206 350 194 330 Air Circulation Hi Me Lo ft3 min m3 h 3 4 Moisture Removal High Pints h Wired Remote Controller Option CZ RD515U 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 Shipping Volume Net Shipping Weight...

Page 9: ...oor Unit 208V Type Air Circulation Hi Me Lo ft3 min m3 h Moisture Removal High Pints h Wired Remote Controller Option CZ RD515U DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature Outdoor air temperature Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Indoor Unit Unit Dimensions Height Width Depth 22 5 8 575 35 3 16 ...

Page 10: ...oncealed Type Indoor Unit 230V Type 235 399 206 350 194 330 Air Circulation Hi Me Lo ft3 min m3 h 4 26 Moisture Removal High Pints h Wired Remote Controller Option CZ RD515U DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature Outdoor air temperature Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Indoor Unit Unit Dim...

Page 11: ...r Unit 208V Type Air Circulation Hi Me Lo ft3 min m3 h Moisture Removal High Pints h Wired Remote Controller Option CZ RD515U DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature Outdoor air temperature Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Indoor Unit Unit Dimensions Height Width Depth 22 5 8 575 35 3 16 In...

Page 12: ...Concealed Type Indoor Unit 230V Type 341 579 294 500 253 430 Air Circulation Hi Me Lo ft3 min m3 h 4 89 Moisture Removal High Pints h Wired Remote Controller Option CZ RD515U DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature Outdoor air temperature Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimensions Weight Indoor Unit Unit Di...

Page 13: ...Concealed Type Indoor Unit 208V Type 341 579 294 500 253 430 Air Circulation Hi Me Lo ft3 min m3 h 4 89 Moisture Removal High Pints h Wired Remote Controller Option CZ RD515U DATA SUBJECT TO CHANGE WITHOUT NOTICE Remarks Rating conditions are Cooling Indoor air temperature Outdoor air temperature 80 F DB 67 F WB 95 F DB 75 F WB Shipping Volume Net Shipping Weight Ib kg Ib kg cu ft m3 inch mm Dimen...

Page 14: ...in Pump Ohm W DATA SUBJECT TO CHANGE WITHOUT NOTICE Thermal Fuse 293 145 Ambient Temp 68 F 20 C Safety Device Open Type F C Aluminum Plate Fin Copper Tube 2 18 1 2 94 0 273 Face Area Coil Rows Fins per inch Heat Exchanger Coil ft2 m2 DATA SUBJECT TO CHANGE WITHOUT NOTICE Yes 1 D12 5 8 L5 3 4 D322 L147 Turbo DC Motor SIC 62FW D866 2 1 8 DC280V 23W 440 Internal Controller Yes Fan Q ty Dia and Length...

Page 15: ...TO CHANGE WITHOUT NOTICE 1 D12 5 8 L5 3 4 D322 L147 Turbo DC Motor SIC 62FW D866 2 1 8 470 Thermal Fuse Fan Q ty Dia and Length Type inch mm Fan Motor Coil Resistance Rough Measure RPM Cool Type Model Q ty No of Poles Safety Device Type Ambient Temp 68 F 20 C Run Capacitor Micro F VAC Ohm PLD 12230ST 1 1 AC208 to 240V 60Hz 10 8 333 10 Coil Resistance Model Q ty Rating Voltage Hz Input Drain Pump O...

Page 16: ...HANGE WITHOUT NOTICE 1 D12 5 8 L5 3 4 D322 L147 Turbo DC Motor SIC 62FW D866 2 1 8 650 Internal Controller Fan Q ty Dia and Length Type inch mm Fan Motor Coil Resistance Rough Measure RPM Cool Type Model Q ty No of Poles Safety Device Type Ambient Temp 68 F 20 C Run Capacitor Micro F VAC Ohm PLD 12230ST 1 1 AC208 to 240V 60Hz 10 8 333 10 Coil Resistance Model Q ty Rating Voltage Hz Input Drain Pum...

Page 17: ... 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 10 15 20 25 30 35 40 Indoor air temp sensor Model KTEC 35 S98 Indoor heat exchanger sensor Model PT2M 51H S3 Resistance k ohm Resistance k ohm Temperature F C Temperature F C 17 ...

Page 18: ... 4 29 32 A View 8 1 3 16 21 32 3 1 8 The length of the suspension bolts should be selected so that there is a gap of 1 3 16 or the ceiling 21 32 or more below the lower surface of the main unit as shown in the figure at right If the suspension bolts is too long it will contact the ceiling panel and the unit cannot be installed A A Air intake Discharge outlet Refrigerant tubing liquid tube dia 1 4 ...

Page 19: ...6 35 mm 4 REFRIGERANT FLOW DIAGRAM 4 1 Refrigerant Flow Diagram Indoor Unit CS MKS9NB4U CZ 18BT1U CS MKS12NB4U CZ 18BT1U Indoor Unit CS KS18NB4UW CZ 18BT1U Cooling cycle Indoor unit Cooling cycle Indoor unit Heat exchanger Strainer Heat exchanger Strainer 19 ...

Page 20: ...NAL BASE CONTROLLER CONTROLLER TO OUTDOOR UNIT GND FERRITE CORE AC1 AC2 SI 1 RED YEL BLU 1 1 YEL RED 3 3 1 1 2 1 1 2 2 1 1 2 2 2 3 3 4 4 5 5 6 6 7 7 1 1 2 2 3 3 4 4 5 5 6 6 7 7 1 1 2 2 3 3 4 4 5 5 1 1 2 2 3 3 4 4 5 5 6 6 7 7 1 1 2 2 3 3 4 4 1 1 2 2 1 1 3 3 3 3 4 4 5 5 1 1 2 2 1 1 2 2 1 1 2 2 3 3 4 4 5 5 1 1 2 2 3 3 4 4 5 5 6 6 6 6 7 7 8 8 9 9 10 10 YEL RED BRN RED ORG YEL PNK BLU VLT 2 3 RED BLK B...

Page 21: ...the connectors in the control box 1 Remove the 2 screws and remove the control box cover Fig 4 2 Disconnect the connectors CN04 FLAP 5P CN12 RC 4P and CN13 IND 7P Fig 5 Latch Latch Hook Hinge Air intake grill Screw Control box cover CN13 CN04 CN12 Fig 1 Fig 4 Fig 5 Fig 2 Fig 3 Hinge Control PCboard To avoid electrical shock hazard be sure to disconnect power before attempting to disassemble the un...

Page 22: ...r and remove the cover with the section 2 pulled down Fig 7 4 Remove the strap 3 locations from the hook on the ceiling panel Fig 8 There is no strap on the indicator cover 5 Remove the bolt 4 locations with a washer and remove the ceiling panel Fig 9 Screw Bolt Bolt Screw Indicator cover Corner cover Corner cover Corner cover Clamp Clamp Pull down section 2 Lead wire Cover Center 1 Fig 6 Fig 7 Fi...

Page 23: ...d control box 1 Remove a screw and remove the terminal cover Fig 11 2 Remove the 2 screws and remove the power box cover Fig 11 3 Disconnect the power lines No 1 and No 2 signal line No 3 and ground cable from the terminals in the power box Fig 12 Indoor air temperature sensor CN08 Terminal Fig 10 Fig 11 Fig 12 Ground cable Terminal cover Screw Screw Power box cover Power lines Signal line 23 ...

Page 24: ... 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 FS 3P and CN09 COIL 1 2P in the control box Fig 15 8 Remove the 2 screws and remove the control box Fig 15 Fig 13 Fig 14 Fig 15 Screw Screw Screw Screw Screw CN06 CN03 Screw Screw Ground cable CN07 CN09 24 ...

Page 25: ...e the drain cap to drain the water Fig 16 2 Refer to the installation instructions for recovery of refrigerant or removal of the power cable or tubing 6 1 6 Remove the main body lower section 1 Remove the 4 screws Fig 16 2 Remove the 2 screws Fig 17 3 Disconnect the connector CN03 DCM 6P in the power box Fig 18 4 Lift the main body lower section and remove it from the main body upper section Screw...

Page 26: ... 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 from the main body upper section Fig 20 4 Remove a nut and remove the float switch Fig 21 Heat exchanger sensor Fig 20 Fig 21 Fig 19 Holder Drain pump Screw Clamp Float switch Nut Drain hose 26 ...

Page 27: ...ove the fan motor Fig 23 6 1 10 Remove the heat exchanger 1 Remove the 3 screws Fig 24 2 Remove the 3 screws Fig 25 3 Remove the heat exchanger from the main body upper section with the heat exchanger lifted Fig 22 Fig 23 Fig 24 Fig 25 Turbo fan Nut Screw Nut Fan motor Screw Screw Heat exchanger Screw Main body upper section 27 ...

Page 28: ...en 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 DRY A DRY B Monitor Conditions are monitored at all times when the room temperature is below 59 F 15 C Load COOL zone A zone B zone Emergency operation is available when the remote controller malfunction...

Page 29: ...AX 0 Start End Time 30 min 5 min Setting temperature Press the NIGHT SETBACK button 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 COOL and DRY modes When the night setback mode is selected the...

Page 30: ...Area Automatic capacity control b When the temperature drops below Point A the operation frequency is reduced by a certain proportion c Area Frequency increase is prohibited d 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 ...

Page 31: ...ontroller HIGH POWER 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 HIGH POWER and 1 HR TIMER buttons oP 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 diagnosti...

Page 32: ...T LOCATION 3 I D PCB FAILURE I D INDOOR 1 OPEN OR SHORT CIRCUIT IN SENSOR 2 POOR CONTACT AT CONNECTOR OR OPEN CIRCUIT AT TERMINAL PRESS FIT LOCATION 3 O D PCB FAILURE O D OUTDOOR O D PCB FAILURE 1 MIS WIRING 2 AC POWER FAILURE 3 BLOWN FUSE 4 POWER RELAY FAILURE 5 I D OR O D PCB FAILURE 6 O D FAN MOTOR FAILURE 7 REACTOR FAILURE 8 HIGH PRESSURE SW FAILURE 9 OLR FAILURE 10 MAGNETIC COIL FAILURE 1 HIC...

Page 33: ... current mode is TEST run If there are no problems with the above then check the outdoor unit 1 The rated voltage must be present between inter unit wirings 1 and 2 Connect a 5 k ohm resistor between inter unit wirings 2 and 3 When the voltage at both ends is measured approximately 12 to 15V DC must be output and the multimeter pointer must bounce once every 8 seconds Or instead of measuring the v...

Page 34: ...B Fig 1 Outdoor Unit Power 1 2 4 3 5 6 1 2 3 V Indoor Unit Outdoor Unit 1 2 4 3 5 6 1 2 3 V Power Indoor Unit Fig 2 NOTE Lamp Timer Operation Off Blinking Condition Illuminated E01 E12 High Power Check Items before Troubleshooting Serial Communication Start After confirming that the following errors do not exist start the Troubleshooting Serial Communication in Condition E01 and E12 1 Mis wiring i...

Page 35: ...he operation button on the indoor unit 2 Perform the self diagnosis five seconds after the operation start 1 Turn off the power and wait until the power lamp LED of the outdoor unit controller is turned OFF 2 Remove the short circuit between the terminals 2 and 3 on the outdoor unit terminal strip 3 Disconnect the cable from the terminal 3 on the indoor unit terminal strip Fig 4 Short circuit betw...

Page 36: ...ter the operation start 1 Turn off the power and wait until the power lamp LED of the outdoor unit controller is turned OFF 2 Disconnect the cable from the terminal 3 on the Outdoor unit terminal strip Fig 6 Defect in the inter unit cable 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...

Page 37: ...ssed 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 Diagnostic results All of the above measured values are normal Fan motor trouble Re...

Page 38: ...distance from the noise source 1 Use shielded wires 2 Move unit away from the noise source Trouble Either of the following trouble may occur 1 The unit may stop suddenly during operation 2 Indicator lamps may flicker 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...

Page 39: ......

Page 40: ...Operating Instructions APPENDIX A 852 6 4181 216 00 1 CS MKS9NB4U CZ 18BT1U CS MKS12NB4U CZ 18BT1U A 1 ...

Page 41: ...16001 Indoor Units CS MKS9NB4U CS MKS12NB4U Outdoor Units CU 3KS19NBU CU 4KS24NBU CU 4KS31NBU Operating Instructions Before operating the unit read these operating instructions thoroughly and keep them for future reference CV6233187624 This air conditioner uses the refrigerant R410A Ceiling Panel CZ 18BT1U ...

Page 42: ...rates at maximum output for 30 minutes regardless of the desired temperature The fan speed is 1 step above High CONTENTS Page FEATURES 2 PRODUCT INFORMATION 2 SAFETY PRECAUTIONS 2 INSTALLATION LOCATION 3 ELECTRICAL REQUIREMENTS 3 SAFETY INSTRUCTIONS 3 NAMES OF PARTS 4 USING THE REMOTE CONTROLLER 8 OPERATION WITH THE REMOTE CONTROLLER 9 1 Operation 9 2 Adjusting the Fan Speed 9 3 Fan Only 9 4 Night...

Page 43: ... 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 Pull off the power plug from a receptacle or switch off the...

Page 44: ...ure fan speed timer setting and air sweeping Refrigerant Tubes The indoor and outdoor units are connected by copper tubes through which refrigerant gas flows Drain Hose Moisture in the room condenses and drains off through this hose Outdoor Condensing Unit The outdoor unit contains the compressor fan motor heat exchanger coil and other electrical components INDOOR UNIT Air Intakes Remote Controlle...

Page 45: ...ogram Timer ON Timer OFF Timer 1 hour OFF Timer 5 NIGHT SETBACK 6 Confirmation of transmission 7 Auto flap indication Flap angle indication Sweep indication 8 High power operation Displayed when setting timer Displayed when transmitting data Displayed when indoor unit sensor is in use Displayed when setting temperature Displayed when temperature is shown Displayed when the time display is set to 1...

Page 46: ...small tipped object such as a ballpoint pen the 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 ADDRESS swi...

Page 47: ...n For details see 4 Night Setback Mode When you press this button in the DRY or COOL mode the mark appears in the display and the remote controller will automatically adjust the set temperature to save energy Time display selector button This switches the time display between 24 hour time and 12 hour time The illustration above pictures the remote controller after the cover has been opened The rem...

Page 48: ...and during air conditioner operation the transmitter on the remote controller should be pointed towards the receiver on the indoor unit Make sure that there are no objects between the remote controller and receiver which could block the signal The batteries last about six months depending on how much you use the remote controller Replace the batteries when the remote controller s display fails to ...

Page 49: ...AN 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 12 To stop the air conditioner press the ON OFF operation button again 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 v...

Page 50: ...oor 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 in approximately 5 minutes by the remote controller Clicking sound is heard from the air conditioner In cooling operation any plastic parts may shrink due to a sudden temperature ...

Page 51: ...Press the CLOCK button once if the time indicator is not flashing The time indication alone flashes 2 Press the Advance Return button until PM 10 30 is displayed The time can be set in 1 minute increments Holding down the button advances the time rapidly in 10 minute increments 3 Press the CLOCK button again This completes the setting of the current time Operation Indication 1 Press the OFF TIME s...

Page 52: ...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 longer 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 ADJUSTING THE AIRFLO...

Page 53: ...ing a footstool or the like be careful not to let it tip over Cleaning the main unit and Remote Controller Wipe clean using a soft dry cloth To remove stubborn dirt moisten a cloth in warm water no hotter than 104 F wring thoroughly and then wipe INDOOR UNIT OPERATION button OPERATION lamp Cooling operation Stop NOTE Cleaning and maintenance operations must be carried out by specially trained pers...

Page 54: ... the two air intake grille hinges 4 Clean the grille gently using a soft sponge or the like Then dry it with care Neutral detergent may be used to remove stubborn dirt Then rinse thoroughly with water and dry it Care After a prolonged idle period Check the indoor and outdoor unit air intakes and outlets for blockage if there is a blockage remove it Care Before a prolonged idle period Operate the f...

Page 55: ...oon stops Obstruction in front of condenser coil Outdoor Unit Remove obstruction Poor cooling performance 1 Dirty or clogged air filter 1 Clean air filter to improve airflow 2 Heat source or many people in room 2 Eliminate heat source if possible 3 Doors and or windows are open 3 Shut them to keep the heat out 4 Obstacle near air intake or air discharge port 4 Remove it to ensure good airflow 5 Th...

Page 56: ...2 5 8 283 575 575 35 3 16 0 34 32 31 11 900 3 50 11 5 32 22 5 8 22 5 8 283 575 575 35 3 16 0 CS MKS12NB4U Model No Outdoor Unit CU 4KS24NBU CU 3KS19NBU Single phase 208 230 V 60 Hz 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 Hi Heating Operation Hi dB A dB A 50 18 800 9 800 18 800 5 50 2 90 5 50 ...

Page 57: ......

Page 58: ...Operating Instructions CS KS18NB4UW CZ 18BT1U 852 6 4181 211 00 1 APPENDIX B A 2 ...

Page 59: ...ing the unit read these operating instructions thoroughly and keep them for future reference CV6233187622 This air conditioner uses the refrigerant R410A Ceiling Panel CZ 18BT1U Multiple use is applied for the model CS KS18NB4UW only Single use means that only one indoor unit is connected with one outdoor unit in a one unit to one unit configuration Multiple use i e Flexi Multi system means that t...

Page 60: ...rates at maximum output for 30 minutes regardless of the desired temperature The fan speed is 1 step above High CONTENTS Page FEATURES 2 PRODUCT INFORMATION 2 SAFETY PRECAUTIONS 2 INSTALLATION LOCATION 3 ELECTRICAL REQUIREMENTS 3 SAFETY INSTRUCTIONS 3 NAMES OF PARTS 4 USING THE REMOTE CONTROLLER 8 OPERATION WITH THE REMOTE CONTROLLER 9 1 Operation 9 2 Adjusting the Fan Speed 9 3 Fan Only 9 4 Night...

Page 61: ... 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 Pull off the power plug from a receptacle or switch off the...

Page 62: ...ure fan speed timer setting and air sweeping Refrigerant Tubes The indoor and outdoor units are connected by copper tubes through which refrigerant gas flows Drain Hose Moisture in the room condenses and drains off through this hose Outdoor Condensing Unit The outdoor unit contains the compressor fan motor heat exchanger coil and other electrical components INDOOR UNIT Air Intakes Remote Controlle...

Page 63: ...ogram Timer ON Timer OFF Timer 1 hour OFF Timer 5 NIGHT SETBACK 6 Confirmation of transmission 7 Auto flap indication Flap angle indication Sweep indication 8 High power operation Displayed when setting timer Displayed when transmitting data Displayed when indoor unit sensor is in use Displayed when setting temperature Displayed when temperature is shown Displayed when the time display is set to 1...

Page 64: ...small tipped object such as a ballpoint pen the 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 ADDRESS swi...

Page 65: ...n For details see 4 Night Setback Mode When you press this button in the DRY or COOL mode the mark appears in the display and the remote controller will automatically adjust the set temperature to save energy Time display selector button This switches the time display between 24 hour time and 12 hour time The illustration above pictures the remote controller after the cover has been opened The rem...

Page 66: ...and during air conditioner operation the transmitter on the remote controller should be pointed towards the receiver on the indoor unit Make sure that there are no objects between the remote controller and receiver which could block the signal The batteries last about six months depending on how much you use the remote controller Replace the batteries when the remote controller s display fails to ...

Page 67: ...AN 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 12 To stop the air conditioner press the ON OFF operation button again 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 v...

Page 68: ...oor 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 in approximately 5 minutes by the remote controller Clicking sound is heard from the air conditioner In cooling operation any plastic parts may shrink due to a sudden temperature ...

Page 69: ...Press the CLOCK button once if the time indicator is not flashing The time indication alone flashes 2 Press the Advance Return button until PM 10 30 is displayed The time can be set in 1 minute increments Holding down the button advances the time rapidly in 10 minute increments 3 Press the CLOCK button again This completes the setting of the current time Operation Indication 1 Press the OFF TIME s...

Page 70: ...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 longer 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 ADJUSTING THE AIRFLO...

Page 71: ...ing a footstool or the like be careful not to let it tip over Cleaning the main unit and Remote Controller Wipe clean using a soft dry cloth To remove stubborn dirt moisten a cloth in warm water no hotter than 104 F wring thoroughly and then wipe INDOOR UNIT OPERATION button OPERATION lamp Cooling operation Stop NOTE Cleaning and maintenance operations must be carried out by specially trained pers...

Page 72: ... the two air intake grille hinges 4 Clean the grille gently using a soft sponge or the like Then dry it with care Neutral detergent may be used to remove stubborn dirt Then rinse thoroughly with water and dry it Care After a prolonged idle period Check the indoor and outdoor unit air intakes and outlets for blockage if there is a blockage remove it Care Before a prolonged idle period Operate the f...

Page 73: ... Outdoor Unit Remove obstruction Poor cooling performance 1 Dirty or clogged air filter 1 Clean air filter to improve airflow 2 Heat source or many people in room 2 Eliminate heat source if possible 3 Doors and or windows are open 3 Shut them to keep the heat out 4 Obstacle near air intake or air discharge port 4 Remove it to ensure good airflow 5 Thermostat is set too high for cooling 5 Set the t...

Page 74: ...ration Outdoor Hi Indoor H M L Outdoor Hi Indoor H M L Heating Operation dB A dB A Indoor Unit CS KS12NB41 34 32 31 11 5 32 22 5 8 22 5 8 283 575 575 35 3 16 0 Indoor Unit CS KS18NB4UW 44 40 36 11 5 32 22 5 8 22 5 8 283 575 575 35 3 16 0 Outdoor Unit CU KS12NK1A 47 21 9 16 28 11 32 10 7 16 548 720 265 75 0 34 0 Outdoor Unit CU KS18NKU CU KS18NKUA 51 26 3 8 34 21 32 11 7 32 670 880 285 90 4 41 0 Mo...

Page 75: ... 575 35 3 16 0 Model No Outdoor Unit CU 4KS24NBU CU 3KS19NBU Single phase 208 230 V 60 Hz 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 Hi Heating Operation Hi dB A dB A 50 18 800 9 800 18 800 5 50 2 90 5 50 29 1 8 35 7 16 12 19 32 740 900 320 138 9 63 0 50 25 400 9 800 25 400 7 50 2 90 7 50 29 1 8...

Page 76: ...A 3 INSTALLATION INSTRUCTIONS CS MKS9NB4U CZ 18BT1U CS MKS12NB4U CZ 18BT1U CS KS18NB4UW CZ 18BT1U APPENDIX C 852 6 4190 582 00 0 ...

Page 77: ... THE INDOOR UNIT 7 3 1 Preparation for Suspending 3 2 Suspending the Indoor Unit 3 3 Placing the Unit Inside the Ceiling 3 4 Installing the Drain Piping 3 5 Checking the Drainage 3 6 How to Install the Ceiling Panel 3 7 Wiring Instructions 3 8 Wiring Instructions for Inter unit Connections 4 HOW TO TEST RUN THE AIR CONDITIONER 14 5 REMOTE CONTROLLER INSTALLATION POSITION 15 5 1 Mounting on a Wall ...

Page 78: ...azard 7R SUHYHQW SRVVLEOH KD DUGV IURP LQVXODWLRQ IDLOXUH the unit must be grounded When Transporting 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 Select an installation location which is rigid and...

Page 79: ... ILQJHUV DQG FORWKLQJ DZD IURP DQ PRYLQJ parts OHDQ XS WKH VLWH DIWHU RX ILQLVK UHPHPEHULQJ WR FKHFN that no metal scraps or bits of wiring have been left inside the unit being serviced Others 9HQWLODWH DQ HQFORVHG DUHDV ZKHQ LQVWDOOLQJ RU WHVWLQJ the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas RQILUP XSRQ FRPSOHWLQJ LQVWDOODWLRQ WKDW...

Page 80: ...nits and make sure all accessory parts listed are with the system before beginning 1 1 Tools Required for Installation not supplied 1 Standard screwdriver 2 Phillips head screwdriver 3 Knife or wire stripper 4 Tape measure 5 Carpenter s level 6 Sabre saw or key hole saw 7 Hacksaw 8 Core bits 9 Hammer 10 Drill 11 Tube cutter 12 Tube flaring tool 13 Torque wrench 14 Adjustable wrench 15 Reamer for d...

Page 81: ...ition from which every corner of the room can be uniformly cooled select a location that will hold the weight of the unit select a location where tubing and drain hose have the shortest run to the outside allow room for operation and maintenance as well as unrestricted air flow around the unit Fig 1 install the unit within the maximum elevation difference H1 H2 H3 H4 above or below the outdoor uni...

Page 82: ...ds securely If a tube is left open for an extended time moisture in the air inside the tubing may condense into water droplets and lead to water contamination of the refrig erant circuit In order to prevent insulation breakdown and ground faults do not allow wiring ends to come in contact with rainwater or be subjected to condensation or dew Apply sufficient thermal insulation to the refrigerant t...

Page 83: ...ram The dia gram shows the relationship between the positions of the suspension fitting unit and panel Fig 6 2 3 3 Placing the Unit Inside the Ceiling 1 Be sure to remove the fan protection 4pcs for transportation before hanging up the indoor unit 2 When placing the unit inside the ceiling determine the pitch of the suspension bolts using the supplied full scale installation diagram Fig 6 3 Tubing...

Page 84: ...ll the drain hose first place 1 of the 2 hose bands over the unit drain port and the other hose band over the hard PVC pipe not supplied Then connect both ends of the supplied drain hose Fig 6 5 3 On the unit drain side grasp the hose band with pliers and insert the drain hose all the way to the base If other commercially available hose bands are used the drain hose may become pinched or wrinkled ...

Page 85: ...nit position 1 Check that the ceiling hole is 23 5 8 600 mm 23 5 8 600 mm Fig 6 11 2 Confirm that the position of the indoor unit and the ceiling as shown in the diagram If the positions of the ceiling sur face and unit do not match air leakage water leakage flap operation failure or other problems may occur Fig 6 11 The drain pump will continue to operate for a minimum of 6 min utes after the FS ...

Page 86: ... the unit and the ceiling panel or between the ceiling panel and the ceiling surface If there is a gap between the panel and the ceiling leave the ceiling panel attached and make fine adjustments to the installation height of the unit to eliminate the gap with the ceiling CAUTION Fig 6 17 Fig 6 18 Fig 6 19 Corner cover Indicator cover Press Pull up 2 1 latch Temporary latches Temporary DRAIN mark ...

Page 87: ...ignal will not be received If the connectors are not connected the auto flap will not operate Be sure to connect them securely A Attaching the corner cover 1 Check that the safety strap from the corner cover is fas tened to the ceiling panel pin as shown in the figure Fig 6 23 2 Use the supplied screws to attach the corner cover to the ceiling panel B Attaching the air intake grille To install the...

Page 88: ...used exclusively for each unit with a power supply disconnect and circuit breaker for overcurrent protection provided in the exclusive line 3 To prevent possible hazards due to insulation 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 5 Do not allow wiri...

Page 89: ... 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 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 termina...

Page 90: ...PLQXWHV WKH V VWHP VKLIWV LQWR FRROLQJ operation and cool air will start to be felt Cooling mode test run is unaffected by the room tempera ture 3 Press the ON OFF operation button of the remote controller again to stop the test run Fig 33 LQDOO SUHVV WKH 5HVHW EXWWRQ RI WKH UHPRWH controller to release it from Test Run mode to return to normal mode Fig 33 µ DQG R3 µ ZLOO GLVDSSHDU IURP WKH UHPRWH...

Page 91: ...ere 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 5 1 Mounting on a Wall Before mounting the remote 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 ...

Page 92: ...Then SUHVV DQG KROG WKH 5HVHW EXWWRQ ZLWK D pointed object such as the tip of a pen After 5 VHFRQGV UHOHDVH WKH EXWWRQ ILUVW WKHQ release the HIGH POWER and 1HR TIMER but tons oP 1 Test 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 but ton 2 times to change the display to oP 7 Address setti...

Page 93: ...nstalled level and vertically The power and voltage are as specified Inter unit cables are securely inserted into the terminal block Inter unit cables are securely fixed The power cable and inter unit cables are not connected anywhere along their paths The ground wire is securely connected Thermal insulation has been applied to the tubing connections Drain connections are secure and water drains p...

Page 94: ...Operating Instructions CZ RD515U 852 6 4181 230 00 1 APPENDIX D A 4 ...

Page 95: ...264181230001 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 is connected the wireless remote controller cannot be used Before operating the unit read these operating instructions thoroughly and keep them for future reference ...

Page 96: ... Model Since the wired remote controller is designed to be commonly used for various air conditioners some of the functions of the wireless remote controller supplied with the indoor unit cannot be used Single use means that only one indoor unit is connected with one outdoor unit in a one unit to one unit configuration Multiple use i e Flexi Multi system means that two or more indoor units are con...

Page 97: ...unction 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 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...

Page 98: ...rature The temperature setting changes by 2 F each time one of the TEMP buttons is pressed NIGHT SETBACK button For details see 5 Night Setback Mode When you press this button in the HEAT DRY or COOL mode the mark appears in the display and the remote controller will automatically adjust the set temperature to save energy Timer and Present Time setting buttons First press the SET button to select ...

Page 99: ...FAN The air conditioner works only as a circulation fan except for Multiple use of COOL DRY HEAT Model 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 NOTE SENSOR button When you press...

Page 100: ... setting 60 86 F When set to 80 F temperature indication 4 Timer 24 hour clock with ON OFF program Timer ON Timer OFF Timer 1 hour OFF Timer 5 NIGHT SETBACK 6 Flap angle indication Sweep indication Displayed when indoor unit sensor is in use Displayed when operating NIGHT SETBACK mode Displayed when setting temperature Displayed when temperature is shown Displayed when setting timer Symbols ...

Page 101: ...hange the settings as desired STEP 1 Press the MODE selector button and select the desired mode For heating operation For dehumidifying operation For cooling operation For fan only operation No Fan mode in Multiple use of COOL DRY HEAT Model o o o o STEP 2 To start the air conditioner press the ON OFF operation button STEP 3 Press the TEMP setting buttons to change the temperature setting to the d...

Page 102: ...perature control follow these steps STEP 1 Press the MODE selector button to switch to the fan mode STEP 2 Press the ON OFF operation button STEP 3 Press the FAN SPEED selector button to select the fan speed of your choice or There is no FAN only function in Multiple use of COOL DRY HEAT Model STEP 2 STEP 1 STEP 3 NOTE When the night setback mode is selected the air conditioner automatically raise...

Page 103: ... the HH button until PM 9 is displayed Press the MM button until 10 is displayed The display will flash for 10 sec and automatically stop flashing except for the symbol Operation Indication 1 Press the SET button twice The timer indication alone flashes and the previous set time is only displayed 2 Press the HH button until PM 11 is displayed Press the MM button until 30 is displayed The display w...

Page 104: ...ING THE AIRFLOW DIRECTION 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 The flap automatically closes when the unit is off During the heating operation the fan speed will be ...

Page 105: ......

Page 106: ...A 5 INSTALLATION INSTRUCTIONS CZ RD515U 852 6 4190 592 00 0 APPENDIX E ...

Page 107: ...ool Dry Heat model at the time of shipment from the factory If the purchased air conditioner is a COOL DRY model follow the instructions on the label and change the switch on the reverse side of the remote controller unit to Cool Dry model Fig 1 The remote controller is also set to Single at the time of shipment from the factory For multiple use set the switch on the reverse side of the remote con...

Page 108: ...5 tab locations and disconnect the back plate of the remote controller by lift ing up slightly Fig 2 b The tabs are thin take care not to chip them 2 Use tapping screws to directly fasten the remote con troller back plate onto the wall Fig 6 3 Insert the connector into the PCB of the remote controller unit and wrap the wire harness around the hook Fig 4 4 Use nippers or a similar tool to cut out t...

Page 109: ...structions supplied with the indoor unit 5 Remove the terminal cover screws then remove the cover At this time take care not to drop the cover Fig 8 6 Pull in the wire harness from the remote controller as shown in Fig 8 b Remove the putty before wiring After wiring make sure to restore the putty 7 Insert the wire harness 4P terminal into the control box PCB connector RC Fig 8 a 8 Install the term...

Page 110: ...ler Fig 9 This starts the fan producing uncooled forced air with the 3 indicator lamps OPERATION lamp TIMER lamp and HIGH POWER lamp on the main unit blinking Fig 11 After 3 minutes the system shifts into cooling operation and cool air will start to be felt Cooling mode test run is unaffected by the room tempera ture 3 Press the ON OFF operation button of the remote controller again to stop the te...

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Page 112: ...DC1111 0 ...

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