Page 1 PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. © Panasonic Appliances Air-Conditioning (M) Sdn. Bhd. 2012. Unauthorized copying and distribution is a violation of law.
Page 2: Table Of Contents
TABLE OF CONTENTS 12.13 AUTO COMFORT and ECO NAVI 1. Safety Precautions ..........3 Operation........... 76 2. Specifications .............5 13. Operation Control (For Multi Split Connection)............85 3. Features.............27 13.1 Cooling operation ........85 4. Location of Controls and Components..28 13.2 Soft Dry Operation........
Page 3: Safety Precautions
1. Safety Precautions Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. The caution items stated here must be followed because these important contents are related to safety.
Page 4 WARNING 19. During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will caused suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc). 20.
Page 5: Specifications
2. Specifications Indoor CS-E7NKEW, CS-XE7NKEW CS-E9NKEW, CS-XE9NKEW Model Outdoor CU-E7NKE CU-E9NKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.75 2.05 2.40 0.85 2.50 3.00 Capacity BTU/h 2560 6990...
Page 6 Type Cross-Flow Fan Cross-Flow Fan Material ASG20K1 ASG20K1 Motor Type Transistor (8-poles) Transistor (8-poles) Input Power 94.8 94.8 Output Power Cool Heat Cool Heat Cool Speed Heat 1015 Cool 1050 1160 Heat 1090 1240 Cool 1080 1210 Heat 1120 1250 Type Propeller Fan Propeller Fan...
Page 7 Inner Diameter 16.7 16.7 Drain Hose Length Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat) Fin Type Slit Fin Slit Fin Indoor Heat Exchanger Row x Stage x FPI 2 x 15 x 17 2 x 15 x 21 Size (W x H x L) 610 x 315 x 25.4 610 x 315 x 25.4 Fin Material...
Page 8 Indoor CS-E12NKEW, CS-XE12NKEW CS-E15NKEW, CS-XE15NKEW Model Outdoor CU-E12NKE CU-E15NKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.85 3.50 4.00 0.85 4.20 5.00 Capacity BTU/h 2900 11900 13600 2900 14300 17100 Kcal/h...
Page 9 Type Cross-Flow Fan Cross-Flow Fan Material ASG20K1 ASG20K1 Motor Type Transistor (8-poles) Transistor (8-poles) Input Power 94.8 94.8 Output Power Cool Heat Cool Heat 1050 Cool 1030 1050 Speed Heat 1140 1200 Cool 1260 1270 Heat 1300 1350 Cool 1290 1310 Heat 1310...
Page 10 Inner Diameter 16.7 16.7 Drain Hose Length Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat) Fin Type Slit Fin Slit Fin Indoor Heat Exchanger Row x Stage x FPI 2 x 15 x 21 2 x 15 x 21 Size (W x H x L) 610 x 315 x 25.4 610 x 315 x 25.4 Fin Material...
Page 11 Indoor CS-E7NKEW, CS-XE7NKEW CS-E9NKEW, CS-XE9NKEW Model Outdoor CU-E7NKE-3 CU-E9NKE-3 Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.75 2.05 2.40 0.85 2.50 3.00 Capacity BTU/h 2560 6990 8180 2900...
Page 12 Type Cross-Flow Fan Cross-Flow Fan Material ASG20K1 ASG20K1 Motor Type Transistor (8-poles) Transistor (8-poles) Input Power 94.8 94.8 Output Power Cool Heat Cool Heat Cool Speed Heat 1015 Cool 1050 1160 Heat 1090 1240 Cool 1080 1210 Heat 1120 1250 Type Propeller Fan Propeller Fan...
Page 13 Inner Diameter 16.7 16.7 Drain Hose Length Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat) Fin Type Slit Fin Slit Fin Indoor Heat Exchanger Row x Stage x FPI 2 x 15 x 17 2 x 15 x 21 Size (W x H x L) 610 x 315 x 25.4 610 x 315 x 25.4 Fin Material...
Page 14 Indoor CS-E12NKEW, CS-XE12NKEW Model Outdoor CU-E12NKE-3 Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. Max. 0.85 3.50 4.00 Capacity BTU/h 2900 11900 13600 Kcal/h 3010 3440 Running Current Input Power 1.18k Annual Consumption 3.40 3.87 3.39 BTU/hW 11.60 13.15...
Page 15 Type Cross-Flow Fan Material ASG20K1 Motor Type Transistor (8-poles) Input Power 94.8 Output Power Cool Heat Cool Heat Cool 1030 Speed Heat 1140 Cool 1260 Heat 1300 Cool 1290 Heat 1310 Type Propeller Fan Material Motor Type DC Motor (6-poles) Input Power Output Power Speed...
Page 16 Inner Diameter 16.7 Drain Hose Length Fin Material Aluminium (Pre Coat) Fin Type Slit Fin Indoor Heat Exchanger Row x Stage x FPI 2 x 15 x 21 Size (W x H x L) 610 x 315 x 25.4 Fin Material Aluminium Outdoor Fin Type...
Page 17 Indoor CS-E18NKEW, CS-XE18NKEW CS-E21NKEW, CS-XE21NKEW Model Outdoor CU-E18NKE CU-E21NKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.98 5.00 6.00 0.98 6.30 7.10 Capacity BTU/h 3340 17100 20500 3340 21500 24200 Kcal/h...
Page 18 Type Cross-Flow Fan Cross-Flow Fan Material ASG20K1 ASG20K1 Motor Type Transistor (8-poles) Transistor (8-poles) Input Power 94.8 94.8 Output Power Cool Heat Cool Heat 1070 1040 Cool 1080 1145 Speed Heat 1190 1240 Cool 1200 1320 Heat 1310 1440 Cool 1390 1460 Heat...
Page 19 Inner Diameter 16.7 16.7 Drain Hose Length Fin Material Aluminium (Pre Coat) Aluminium (Pre Coat) Fin Type Slit Fin Slit Fin Indoor Heat Exchanger Row x Stage x FPI 2 x 15 x 17 2 x 15 x 17 Size (W x H x L) 810 x 315 x 25.4 810 x 315 x 25.4 Fin Material...
Page 20 Multi Split Combination Possibility: A single outdoor unit enables air conditioning of up to two separate rooms for CU-2E15LBE, CU-2E18LBE. A single outdoor unit enables air conditioning of up to three separate rooms for CU-3E18LBE. A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E23LBE, CU-4E27CBPG.
Page 21 Outdoor Unit : CU-2E15LBE Outdoor Unit : CU-2E18LBE...
Page 22 Outdoor Unit : CU-3E18LBE...
Page 23 Outdoor Unit : CU-4E23LBE...
Page 25 Outdoor Unit : CU-4E27CBPG...
Page 27 Features Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control Environment Protection Non-ozone depletion substances refrigerant (R410A) Long Installation Piping Long piping up to 15 meters (0.75 ~ 1.75HP) and 20 meters (2.0 ~ 2.25HP) during single split connection only Easy to use remote control Quality Improvement...
Page 28: Location Of Controls And Components
4. Location of Controls and Components Indoor Unit Outdoor Unit Remote Control...
Page 29: Indoor Unit
5. Dimensions Indoor Unit 5.1.1 CS-E7NK CS-E9NK CS-E12NK CS-E15NK CS-XE7NK CS-XE9NK CS-XE12NK CS-XE15NK...
Page 30 5.1.2 CS-E18NK CS-E21NK CS-XE18NK CS-XE21NK...
Page 31: Outdoor Unit
Outdoor Unit 5.2.1 CU-E7NKE CU-E9NKE CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3 5.2.2 CU-E12NKE CU-E15NKE...
Page 32 5.2.3 CU-E18NKE CU-E21NKE...
Page 33: Refrigeration Cycle Diagram
6. Refrigeration Cycle Diagram CU-E7NKE CU-E9NKE CU-E12NKE CU-E15NKE...
Page 34: Cu-E7Nke-3 Cu-E9Nke-3 Cu-E12Nke-3
CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3...
Page 35: Cu-E18Nke
CU-E18NKE...
Page 36: Cu-E21Nke
CU-E21NKE...
Page 37: Block Diagram
7. Block Diagram CU-E7NKE CU-E9NKE...
Page 38: Cu-E12Nke
CU-E12NKE...
Page 39: Cu-E15Nke
CU-E15NKE...
Page 40 CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3...
Page 41: Cu-E18Nke Cu-E21Nke
CU-E18NKE CU-E21NKE...
Page 42: Wiring Connection Diagram
8. Wiring Connection Diagram Indoor Unit...
Page 43 Outdoor Unit 8.2.1 CU-E7NKE CU-E9NKE...
Page 44 8.2.2 CU-E12NKE...
Page 45 8.2.3 CU-E15NKE...
Page 46 8.2.4 CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3...
Page 47 8.2.5 CU-E18NKE CU-E21NKE...
Page 48: Electronic Circuit Diagram
9. Electronic Circuit Diagram Indoor Unit...
Page 49 Outdoor Unit 9.2.1 CU-E7NKE CU-E9NKE...
Page 50 9.2.2 CU-E12NKE...
Page 51 9.2.3 CU-E15NKE...
Page 52 9.2.4 CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3...
Page 53 9.2.5 CU-E18NKE CU-E21NKE...
Page 54: Printed Circuit Board
10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board...
Page 55 10.1.2 Indicator Printed Circuit Board 10.1.3 High Voltage Power Supply Printed Circuit Board 10.1.4 Comparator Printed Circuit Board...
Page 56 10.1.5 Human Activity Sensor Printed Circuit Board...
Page 57 10.2 Outdoor Unit 10.2.1 CU-E7NKE CU-E9NKE CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3...
Page 58 10.2.2 CU-E12NKE CU-E15NKE...
Page 59 10.2.3 CU-E18NKE CU-E21NKE...
Page 60: Installation Instruction
11. Installation Instruction 11.1 Select the Best Location 11.1.3 Indoor/Outdoor Unit Installation Diagram 11.1.1 Indoor Unit Do not install the unit in excessive oil fume area such as kitchen, workshop and etc. There should not be any heat source or steam near the unit.
Page 61 11.2 Indoor Unit 11.2.1 How to Fix Installation Plate 11.2.2 To Drill a Hole in the Wall and The mounting wall shall be strong and solid enough to Install a Sleeve of Piping prevent if from the vibration. Insert the piping sleeve to the hole. Fix the bushing to the sleeve.
Page 62 11.2.3.1 For the right rear piping 11.2.3.2 For the right and right bottom piping 11.2.3.3 For the embedded piping (This can be used for left rear piping and bottom piping also.)
Page 63: Connect The Cable To The Indoor Unit
11.2.4 Connect the Cable to the Indoor Unit The inside and outside connecting cable can be connected without removing the front grille. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.
Page 64 11.2.4.1 Cutting and flaring the piping Please cut using pipe cutter and then remove the burrs. Remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. Please make flare after inserting the flare nut onto the copper pipes.
Page 65 11.3 Outdoor Unit 11.3.1 Install the Outdoor Unit After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
Page 66: Evacuation Of The Equipment
11.3.3 Evacuation of the Equipment WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve.
Page 67: Piping Insulation
Secure the power supply cord and connection cable onto the control board with the holder. Attach the control board cover back to the original position with the screw. For wire stripping and connection requirement, refer to instruction 11.2.4 of the indoor unit. WARNING This equipment must be properly earthed.
Page 68: Operation Control
12. Operation Control 12.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
Page 69: Indoor Fan Motor Operation
12.1.5 Automatic Operation This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature. During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.
Page 70: Outdoor Fan Motor Operation
[Heating] According to indoor pipe temperature, automatic heating fan speed is determined as follows. B. Feedback control Immediately after the fan motor started, feedback control is performed once every second. During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error counter increase, fan motor is then stop and restart.
Page 71 Vane Angle (°) Operation Mode Usual (Ventilation) 5 ~ 35 Auto Control with dew 5 ~ 35 Cooling Usual (Ventilation) 12.5 27.5 Manual Control with dew 12.5 27.5 Usual 5 ~ 35 Auto Control with dew 5 ~ 35 Usual 12.5 27.5 Manual...
Page 72: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)
Pattern Airflow Direction Patterns at Remote Control Vane Angle (°) CS-E18, 21NK CS-XE18, 21NK 12.5 Quiet operation (Cooling Mode/Cooling area of Dry Mode) Purpose To provide quiet cooling operation compare to normal operation. Control condition Quiet operation start condition When “POWERFUL/QUIET” button at remote control is pressed twice. POWERFUL/QUIET LED illuminates.
Page 73: Powerful Mode Operation
Control contents Fan speed manual Fan speed is changed from normal setting to quiet setting of respective fan speed. This is to reduce sound of Hi, Me, Lo for 3dB. Fan speed for quiet operation is reduced from setting fan speed. Fan Speed Auto Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger.
Page 74: Indication Panel
12.10 Indication Panel POWER TIMER POWERFUL/QUIET nanoe-G ECONAVI AUTO COMFORT Color Green Orange Orange Blue Green Green POWERFUL/QUIET nanoe-G AUTO COMFORT Light ON Operation ON Timer Setting ON ECONAVI ON Mode ON POWERFUL/QUIET nanoe-G AUTO COMFORT Light OFF Operation OFF Timer Setting OFF ECONAVI OFF Mode OFF Note:...
Page 75 Remote Control Receiving Sound Normal Operation nanoe-G Operation : Beep Nanoe-G Operation Normal Operation : Beep Stop nanoe-G individual Operation : Beep Nanoe-G individual Operation Stop : Long Beep Power failure During nanoe-G individual operation, if power failure occurs, after power resumes, nanoe-G individual operation resumes immediately.
Page 76: Mild Dry Cooling Operation
Troubleshooting method Press nanoe-G button or OFF/ON button to stop the operation and check the nanoe-G connector at PCB. After that, press nanoe-G button again to confirm the nanoe-G indicator do not blinks. The 24 timer counter will be clear after 10 minutes of normal operation or when operation stops. Error reset method Press OFF/ON button to OFF the operation.
Page 77 ECO NAVI stop conditions: When ECO NAVI button is pressed again. When unit is OFF by OFF/ON button. When unit is OFF when OFF TIMER activates. When unit is OFF by AUTO OFF/ON button at indoor unit. When POWERFUL, QUIET operation activates. When ◄►...
Page 78 12.13.1.1 Signal Detection Human Activity sensor will turns on according to infrared sensors signal detection. Signal detection Possible detected human Human Activity Indicator position area Sensor 1 Sensor 2 Left Center Right ■ ■ □ □ ■ ■ ■ □ ■...
Page 79 12.13.1.7 Setting Position Judgment According to installation position when there is only one activity area detected, the horizontal airflow direction louver position is fixed according to chart below: Horizontal airflow direction louver position Target area Left installation Center installation Right installation Louver position refer to horizontal airflow direction control.
Page 80 12.13.2.1 ECO NAVI and AUTO COMF Demo Mode To enable ECO DEMO mode: To disable ECO Demo MODE: Transmit ECO Demo signal again. Operation details Infrared sensor Human Activity Sensor Vane position Fan speed Sensor 1 Sensor 2 Left Center Right ■...
Page 81 12.13.2.2 Infrared Sensor Abnormality Abnormality detection: Connector disconnection / Wire cut abnormality o Sensor judge Hi level continuously for 25 seconds Circuit abnormality o 70 seconds after power ON, if infrared sensor judge Lo level continuously for 25 seconds Error Code judgment When abnormality happened, internal counter increase by 1 time.
Page 82 12.13.3 Sunlight Sensor During ECONAVI operation, the sunlight sensor detects sunlight intensity coming through windows and differentiates between sunny and cloudy or night to further optimize energy saving by adjusting the temperature. Sunlight judgment is as following 12.13.3.1 Sunlight Intensity Reset The sunlight intensity will to reset to zero (no sunlight condition) when Each time ECONAVI is activated.
Page 83 12.13.3.3 Judge Ambient Condition According to sunlight intensity over a period of time, the system will analyze the ambient condition is sunny, cloudy or night. 12.13.3.4 Temperature Shift 12.13.3.5 Sunlight Sensor Check Mode To enable sunlight sensor check mode, during unit is OFF (power standby): Operation details The sunlight sensor check mode will be operated for 5 minutes.
Page 84 12.13.3.6 Sunlight Sensor Abnormality Abnormality detection: When ECONAVI is ON, if the sunlight intensity value below minimum level continuously for 24 hours, the sunlight sensor disconnection error counter will increase by 1 time. If the ECONAVI is OFF, the 24 hours timer will be reset, but the sunlight sensor disconnection error counter will not be reset.
Page 85: Operation Control (For Multi Split Connection)
13. Operation Control (For Multi Split Connection) During multi split connection, indoor unit’s operation controls are same with single split connection unless specified in this chapter. 13.1 Cooling operation 13.1.1 Thermostat control Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature — Internal setting temperature <...
Page 86: Automatic Operation
13.4 Automatic Operation This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature. During operation mode judgment, indoor fan motor (with speed of -Lo) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature.
Page 87: Protection Control
14. Protection Control 14.1 Protection Control For All Operations 14.1.1 Restart Control (Time Delay Safety Control) The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. This control is not applicable if the power supply is cut off and on again.
Page 88 14.1.4 Compressor Overheating Prevention Control Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below. If compressor discharge temperature exceeds 107°C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking.
Page 89: Outdoor Air Temperature Control
14.2 Protection Control For Cooling & Soft Dry Operation 14.2.1 Outdoor Air Temperature Control The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. This control will begin 1 minute after the compressor starts. Compressor frequency will adjust base on outdoor air temperature.
Page 90: Protection Control For Heating Operation
14.2.6 Odor Cut Control To reduce the odor released from the unit. Start Condition AUTO FAN Speed is selected during COOL or DRY operation. During freeze prevention control and timer preliminary operation, this control is not applicable. Control content Depends on compressor conditions: 1.
Page 91: Servicing Mode
15. Servicing Mode 15.1 Auto OFF/ON Button AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds.
Page 92: Remote Control Button
REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset”...
Page 93: Troubleshooting Guide
16. Troubleshooting Guide 16.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan.
Page 94 16.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant (gas leakage) Clogged capillary tube or Strainer...
Page 95: Breakdown Self Diagnosis Function
16.2 Breakdown Self Diagnosis Function 16.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) When the latest abnormality code on the main Once abnormality has occurred during operation, unit and code transmitted from the remote the unit will stop its operation, and Timer LED controller are matched, power LED will light blinks.
Page 96: Error Codes Table
16.3 Error Codes Table...
Page 98: Self-Diagnosis Method
16.4 Self-diagnosis Method 16.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused Faulty indoor unit PCB. Faulty outdoor unit PCB.
Page 99 16.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused Wrong models interconnected. Wrong indoor unit or outdoor unit PCBs mounted. Indoor unit or outdoor unit PCBs defective. Indoor-outdoor unit signal transmission error due to wrong wiring.
Page 100 16.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor.
Page 101 16.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting...
Page 102 16.4.5 H16 (Outdoor Current Transformer Open Circuit) Malfunction Decision Conditions A current transformer (CT) is detected by checking the compressor running frequency (≥ rated frequency) and CT detected input current (less than 0.65A) for continuously 20 seconds. Malfunction Caused CT defective Outdoor PCB defective Compressor defective (low compression) Troubleshooting...
Page 103 16.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused Operation stops due to short circuit inside the fan motor winding.
Page 104 16.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Page 105 16.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Page 106 16.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Page 107 16.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Page 108 16.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor.
Page 109 16.4.12 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused Wrong models interconnected. Wrong indoor unit and outdoor unit PCBs used. Indoor unit or outdoor unit PCB defective. Troubleshooting...
Page 110 16.4.13 H34 (Outdoor Heat Sink Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor.
Page 111 16.4.14 H36 (Outdoor Gas Pipe Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Page 112 16.4.15 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor.
Page 113 16.4.16 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused Operation stops due to short circuit inside the fan motor winding. Operation stops due to breaking of wire inside the fan motor.
Page 114 16.4.17 H98 (Indoor High Pressure Protection) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions During heating operation, the temperature detected by the indoor pipe temperature sensor is above 60°C. Malfunction Caused Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger 2/3 way valve closed...
Page 115 16.4.18 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger...
Page 116 16.4.19 F11 (4-way valve Abnormality) Malfunction Decision Conditions When heating operation, when indoor pipe temperature is below 10°C When cooling operation, when indoor pipe temperature is above 45°C Malfunction Caused Connector in poor contact Faulty sensor Faulty outdoor unit PCB 4-way valve defective Troubleshooting...
Page 117 16.4.20 F17 (Indoor Standby Units Freezing Abnormality) Malfunction Decision Conditions When the different between indoor intake air temperature and indoor pipe temperature is above 10°C or indoor pipe temperature is below -1.0°C. Remark: When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s).
Page 118 16.4.21 F90 (Power Factor Correction Protection) Malfunction Decision Conditions During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level. Malfunction Caused DC voltage peak due to power supply surge. DC voltage peak due to compressor windings not uniform.
Page 119 16.4.22 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions During cooling, compressor frequency = Fcmax. During heating, compressor frequency > Fhrated. During cooling and heating operation, running current: 0.65A < I < 1.65A. During cooling, indoor intake - indoor pipe < 4°C. During heating, indoor pipe - indoor intake <...
Page 120 16.4.23 F93 (Compressor Rotation Failure) Malfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused Compressor terminal disconnect Faulty Outdoor PCB Faulty compressor Troubleshooting...
Page 121 16.4.24 F95 (Cooling High Pressure Abnormality) Malfunction Decision Conditions During operation of cooling, when outdoor unit heat exchanger high temperature data (61°C) is detected by the outdoor pipe temperature sensor. Malfunction Caused Air short circuit at indoor unit Dust accumulation on the indoor unit heat exchanger 2/3 way valve closed Faulty outdoor unit fan motor Excessive refrigerant...
Page 122 16.4.25 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooling and heating, when IPM temperature data (100°C) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor.
Page 123 16.4.26 F97 (Compressor Overheating) Malfunction Decision Conditions During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the compressor tank temperature sensor. Malfunction Caused Faulty compressor tank temperature sensor 2/3 way valve closed Refrigerant shortage (refrigerant leakage) Faulty outdoor unit PCB Faulty compressor Troubleshooting...
Page 124 16.4.27 F98 (Input Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.
Page 125: Troubleshooting
16.4.28 F99 (Output Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an output over-current (DC peak current value at IPM Prevention Control) is detected by checking the current that flows in the inverter DC peak sensing circuitry. Malfunction Caused Faulty outdoor unit PCB Faulty compressor...
Page 126: Disassembly And Assembly Instructions
17. Disassembly and Assembly Instructions WARNING High Voltage are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 17.1 CS-E7NK CS-E9NK CS-E12NK CS-E15NK CS-XE7NK CS-XE9NK CS-XE12NK CS-XE15NK 17.1.1...
Page 127 17.1.1.3 To remove discharge grille...
Page 128 17.1.1.4 To remove control board 17.1.1.5 To remove cross flow fan and indoor fan motor...
Page 130: Cs-E18Nk Cs-E21Nk Cs-Xe18Nk Cs-Xe21Nk
17.2 CS-E18NK CS-E21NK CS-XE18NK CS-XE21NK 17.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 17.2.1.1 To remove front grille 17.2.1.2 To remove horizontal vane...
Page 131 17.2.1.3 To remove power electronic controller...
Page 132 17.2.1.4 To remove discharge grille 17.2.1.5 To remove control board 17.2.1.6 To remove cross flow fan and indoor fan motor...
Page 134: Outdoor Electronic Controller Removal Procedure
17.3 Outdoor Electronic Controller Removal Procedure 17.3.1 CU-E7NKE CU-E9NKE CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3 Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 3 screws of the Top Panel. Remove the Control Board as follows: Fig. 1 Fig. 4 Remove the 6 screws of the Front Panel.
Page 135 17.3.2 CU-E12NKE CU-E15NKE Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove the Control Board as follows: Fig. 1 Fig. 4 Remove the 8 screws of the Front Panel. Fig. 2 Fig.
Page 136 17.3.3 CU-E18NKE CU-E21NKE Remove the 4 screws of the Top Panel. Remove the Control Board. Fig. 4 Remove the 8 screws of the Electronic Controller. Fig. 1 Remove the 10 screws of the Front Panel. Fig. 5 Fig. 2 Remove the Top Cover of the Electronic Caution! When handling electronic controller, be careful of Controller.
Page 137: Operation Characteristics
18. Technical Data 18.1 Operation Characteristics 18.1.1 CU-E7NKE Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 19.600 19.100 18.600 18.100 17.600 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 2.500 2.300...
Page 138 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 19.200 19.000 18.800 18.600 18.400 Piping Length (m) 2.100 2.000 1.900 1.800 Piping Length (m) 1.130 1.120 1.110 1.100 1.090 1.080 Piping Length (m) 2.210 2.200 2.190...
Page 139 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 34.000 33.000 32.000 31.000 30.000 29.000 28.000 27.000 Outdoor Air Temperature (°C) 3.200 3.000 2.800 2.600 2.400 2.200 2.000 1.800 Outdoor Air Temperature (°C) 3.300 3.100 2.900...
Page 140 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 32.400 32.300 32.200 32.100 32.000 31.900 Piping Length (m) 2.850 2.800 2.750 2.700 2.650 Piping Length (m) 2.660 2.640 2.620 2.600 Piping Length (m) 3.020 3.000 2.980...
Page 141 18.1.2 CU-E9NKE Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 18.500 18.000 17.500 17.000 16.500 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 3.100 2.900...
Page 142 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 17.700 17.500 17.300 17.100 Piping Length (m) 2.600 2.500 2.400 2.300 Piping Length (m) 1.130 1.120 1.110 1.100 1.090 1.080 1.070 Piping Length (m) 2.510 2.500 2.490...
Page 143 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 37.000 36.000 35.000 34.000 33.000 32.000 31.000 30.000 29.000 Outdoor Air Temperature (°C) 4.200 3.700 3.200 2.700 2.200 Outdoor Air Temperature (°C) 3.700 3.500 3.300 3.100 2.900...
Page 144 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 34.900 34.800 34.700 34.600 34.500 34.400 Piping Length (m) 3.450 3.400 3.350 3.300 3.250 Piping Length (m) 2.400 2.380 2.360 2.340 Piping Length (m) 3.420 3.400 3.380...
Page 145 18.1.3 CU-E12NKE Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 16.500 16.000 15.500 15.000 14.500 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 4.200 4.000...
Page 146 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 16.000 15.800 15.600 15.400 15.200 Piping Length (m) 3.600 3.500 3.400 3.300 3.200 Piping Length (m) 0.980 0.970 0.960 0.950 0.940 0.930 0.920 Piping Length (m) 4.100...
Page 147 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 39.000 37.000 35.000 33.000 31.000 29.000 Outdoor Air Temperature (°C) 4.600 4.100 3.600 3.100 2.600 Outdoor Air Temperature (°C) 4.700 4.500 4.300 4.100 3.900 3.700 Outdoor Air Temperature (°C) 2.700...
Page 148 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 34.700 34.600 34.500 34.400 34.300 34.200 Piping Length (m) 4.050 4.000 3.950 3.900 3.850 3.800 Piping Length (m) 2.540 2.520 2.500 2.480 2.460 2.440 Piping Length (m)
Page 149 18.1.4 CU-E15NKE Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 15.300 14.800 14.300 13.800 13.300 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 5.100 4.600...
Page 150 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 14.600 14.500 14.400 14.300 14.200 14.100 14.000 Piping Length (m) 4.300 4.200 4.100 4.000 3.900 3.800 Piping Length (m) 0.920 0.910 0.900 0.890 0.880 0.870...
Page 151 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 42.000 40.000 38.000 36.000 34.000 32.000 Outdoor Air Temperature (°C) 5.900 5.400 4.900 4.400 3.900 3.400 Outdoor Air Temperature (°C) 7.000 6.800 6.600 6.400 6.200 6.000 5.800...
Page 152 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 38.800 38.700 38.600 38.500 38.400 38.300 38.200 Piping Length (m) 5.350 5.300 5.250 5.200 5.150 5.100 5.050 Piping Length (m) 2.950 2.930 2.910 2.890 2.870...
Page 153 18.1.5 CU-E7NKE-3 Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 19.600 19.100 18.600 18.100 17.600 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 2.500 2.300...
Page 154 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 19.200 19.000 18.800 18.600 18.400 Piping Length (m) 2.100 2.000 1.900 1.800 Piping Length (m) 1.130 1.120 1.110 1.100 1.090 1.080 Piping Length (m) 2.210 2.200 2.190...
Page 155 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 34.000 33.000 32.000 31.000 30.000 29.000 28.000 27.000 Outdoor Air Temperature (°C) 3.200 3.000 2.800 2.600 2.400 2.200 2.000 1.800 Outdoor Air Temperature (°C) 3.300 3.100 2.900...
Page 156 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 32.400 32.300 32.200 32.100 32.000 31.900 Piping Length (m) 2.900 2.800 2.700 2.600 Piping Length (m) 2.660 2.650 2.640 2.630 2.620 2.610 2.600 Piping Length (m) 3.020...
Page 157 18.1.6 CU-E9NKE-3 Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 18.500 18.000 17.500 17.000 16.500 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 3.100 2.900...
Page 158 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 17.700 17.600 17.500 17.400 17.300 17.200 17.100 Piping Length (m) 2.600 2.500 2.400 2.300 Piping Length (m) 1.130 1.120 1.110 1.100 1.090 1.080 1.070 Piping Length (m)
Page 159 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 37.000 36.000 35.000 34.000 33.000 32.000 31.000 30.000 29.000 Outdoor Air Temperature (°C) 3.800 3.600 3.400 3.200 3.000 2.800 2.600 2.400 2.200 Outdoor Air Temperature (°C) 3.700 3.500 3.300...
Page 160 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 34.900 34.800 34.700 34.600 34.500 34.400 Piping Length (m) 3.500 3.400 3.300 3.200 Piping Length (m) 2.400 2.390 2.380 2.370 2.360 2.350 2.340 Piping Length (m) 3.420...
Page 161 18.1.7 CU-E12NKE-3 Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 16.200 15.700 15.200 14.700 14.200 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 4.200 4.000...
Page 162 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 15.500 15.400 15.300 15.200 15.100 15.000 14.900 Piping Length (m) 3.600 3.500 3.400 3.300 3.200 Piping Length (m) 0.970 0.960 0.950 0.940 0.930 0.920 Piping Length (m)
Page 163 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 37.000 36.000 35.000 34.000 33.000 32.000 31.000 30.000 29.000 Outdoor Air Temperature (°C) 5.300 4.800 4.300 3.800 3.300 2.800 Outdoor Air Temperature (°C) 5.500 5.300 5.100 4.900...
Page 164 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 35.600 35.500 35.400 35.300 35.200 35.100 Piping Length (m) 4.500 4.400 4.300 4.200 Piping Length (m) 2.480 2.460 2.440 2.420 Piping Length (m) 5.120 5.100 5.080...
Page 165 18.1.8 CU-E18NKE Cooling Characteristic at Different Outdoor Air Temperature Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 16.600 16.100 15.600 15.100 14.600 14.100 13.600 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 6.200 5.700...
Page 166 Cooling Characteristic at Different Piping Length Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 15.500 15.400 15.300 15.200 Piping Length (m) 5.100 5.000 4.900 4.800 Piping Length (m) 0.940 0.930 0.920 0.910 0.900...
Page 167 Heating Characteristic at Different Outdoor Air Temperature Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 40.000 38.000 36.000 34.000 32.000 30.000 Outdoor Air Temperature (°C) 6.600 6.100 5.600 5.100 4.600 4.100 Outdoor Air Temperature (°C) 7.200 6.700 6.200...
Page 168 Heating Characteristic at Different Piping Length Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 36.900 36.800 36.700 36.600 Piping Length (m) 5.840 5.820 5.800 5.780 5.760 Piping Length (m) 2.800 2.795 2.790 2.785...
Page 169 18.1.9 CU-E21NKE Cooling Characteristic at Different Outdoor Air Temperature Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 16.200 15.700 15.200 14.700 14.200 13.700 13.200 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 Outdoor Air Temperature (°C) 7.800 7.300...
Page 170 Cooling Characteristic at Different Piping Length Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 15.100 15.000 14.900 14.800 Piping Length (m) 6.400 6.300 6.200 6.100 Piping Length (m) 0.890 0.880 0.870 0.860 0.850...
Page 171 Heating Characteristic at Different Outdoor Air Temperature Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 41.000 39.000 37.000 35.000 33.000 31.000 Outdoor Air Temperature (°C) 8.100 7.600 7.100 6.600 6.100 5.600 5.100 Outdoor Air Temperature (°C) 10.200 9.700...
Page 172 Heating Characteristic at Different Piping Length Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 38.100 38.000 37.900 37.800 37.700 Piping Length (m) 7.240 7.220 7.200 7.180 7.160 7.140 Piping Length (m) 3.050 3.040 3.030...
Page 173: Sensible Capacity Chart
18.2 Sensible Capacity Chart CU-E7NKE CU-E7NKE-3 230V Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 2.03 1.54 0.43 1.90 1.48 0.46 1.77 1.42 0.50 1.61 1.35 0.53 19.0°C 2.05 0.47 19.5°C 2.23 1.61 0.44 2.09 1.55 0.47 1.94 1.49 0.50 1.77 1.42 0.54...
Page 174 CU-E18NKE 230V Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 4.96 3.76 1.35 4.64 3.61 1.45 4.31 3.47 1.55 3.92 3.29 1.67 19.0°C 5.00 1.47 19.5°C 5.45 3.94 1.37 5.09 3.78 1.48 4.74 3.64 1.58 4.31 3.47 1.70 22.0°C 5.94 4.08 1.40 5.55...
Page 175 19. Exploded View and Replacement Parts List 19.1 Indoor Unit 19.1.1 CS-E7NKEW CS-E9NKEW CS-E12NKEW CS-E15NKEW CS-XE7NKEW CS-XE9NKEW CS-XE12NKEW CS-XE15NKEW Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
Page 176 REF. PART NAME & DESCRIPTION QTY. CS-E7NKEW CS-E9NKEW CS-E12NKEW CS-E15NKEW REMARK CHASSIS COMPLETE CWD50C1653 ← ← ← FAN MOTOR ARW7628AC ← ← ← CROSS-FLOW FAN COMPLETE CWH02C1076 ← ← ← BEARING ASSY CWH64K007 ← ← ← SCREW - CROSS-FLOW FAN CWH551146 ←...
Page 177 SHOCK ABSORBER ( R ) CWG713387 ← ← ← C.C. CASE CWG567354 ← ← ← (NOTE) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
Page 178 REF. PART NAME & DESCRIPTION QTY. CS-XE7NKEW CS-XE9NKEW CS-XE12NKEW CS-XE15NKEW REMARK CHASSIS COMPLETE CWD50C1666 ← ← ← FAN MOTOR ARW7628AC ← ← ← CROSS-FLOW FAN COMPLETE CWH02C1076 ← ← ← BEARING ASSY CWH64K007 ← ← ← SCREW - CROSS-FLOW FAN CWH551146 ←...
Page 179 SHOCK ABSORBER ( R ) CWG713387 ← ← ← C.C. CASE CWG567354 ← ← ← (NOTE) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
Page 180 19.1.2 CS-E18NKEW CS-E21NKEW CS-XE18NKEW CS-XE21NKEW Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
Page 181 REF. PART NAME & DESCRIPTION QTY. CS-E18NKEW CS-E21NKEW CS-XE18NKEW CS-XE21NKEW REMARK CHASSIS COMPLETE CWD50C1654 ← CWD50C1604 ← FAN MOTOR ARW7627AC ← ← ← CROSS-FLOW FAN COMPLETE CWH02C1077 ← ← ← BEARING ASSY CWH64K007 ← ← ← SCREW - CROSS-FLOW FAN CWH551146 ←...
Page 182 SHOCK ABSORBER ( R ) CWG713403 ← ← ← C.C. CASE CWG567454 ← ← ← (NOTE) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
Page 183 19.2 Outdoor Unit 19.2.1 CU-E7NKE CU-E9NKE CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
Page 184 REF. NO. PART NAME & DESCRIPTION QTY. CU-E7NKE CU-E9NKE REMARK CHASSIS COMPLETE CWD50K2073 ← SOUND PROOF MATERIAL CWG302447 CWG302292 FAN MOTOR BRACKET CWD541089 ← SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR CWA951720 CWA951721 SCREW - FAN MOTOR MOUNT CWH55252J ←...
Page 185 REF. NO. PART NAME & DESCRIPTION QTY. CU-E7NKE-3 CU-E9NKE-3 CU-E12NKE-3 REMARK CHASSIS COMPLETE CWD50K2073 ← ← SOUND PROOF MATERIAL CWG302314 ← ← FAN MOTOR BRACKET CWD541089 ← ← SCREW - FAN MOTOR BRACKET CWH551217 ← ← FAN MOTOR CWA951720 CWA951721 CWA951699 SCREW - FAN MOTOR MOUNT CWH55252J...
Page 186 19.2.2 CU-E12NKE CU-E15NKE Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
Page 187 REF. NO. PART NAME & DESCRIPTION QTY. CU-E12NKE CU-E15NKE REMARK CHASSIS COMPLETE CWD52K1277 ← SOUND PROOF MATERIAL CWG302719 ← FAN MOTOR BRACKET CWD541167 ← SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR ARS6411AC CWA951830 SCREW - FAN MOTOR MOUNT CWH55252J ←...
Page 188 19.2.3 CU-E18NKE CU-E21NKE Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
Page 189 REF. NO. PART NAME & DESCRIPTION QTY. CU-E18NKE CU-E21NKE REMARK CHASSIS COMPLETE CWD52K1261 ← ANTI - VIBRATION BUSHING CWH50077 ← COMPRESSOR 5RD132XBA21 ← NUT - COMPRESSOR MOUNT CWH56000J ← SOUND PROOF MATERIAL CWG302629 ← FAN MOTOR BRACKET CWD541153 ← FAN MOTOR ARW8401AC ←...

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Panasonic CS-E7NKEW Service Manual

1 Safety Precautions

2 Specifications

3 Features

4 Location of Controls and Components

5 Dimensions

6 Refrigeration Cycle Diagram

7 Block Diagram

8 Wiring Connection Diagram

9 Electronic Circuit Diagram

10 Printed Circuit Board

11 Installation Instruction

12 Operation Control

13 Operation Control (for Multi Split Connection)

15 Servicing Mode

16 Troubleshooting Guide

17 Disassembly and Assembly Instructions

18 Technical Data

19 Exploded View and Replacement Parts List

Quick Links

Troubleshooting

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