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 13.10 Indication Panel ......... 86 1. Safety Precautions ..........3 13.11 nanoe-G Operation........86 13.12 Mild Dry Cooling Operation ....... 88 2. Specification ............5 13.13 AUTO COMFORT and ECO NAVI 3. Features.............29 Operation........... 88 4. Location of Controls and Components..30 14.
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: Specification
2. Specification Indoor CS-E7NKR Model Outdoor CU-E7NKR Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.85 2.05 2.40 0.85 2.05 2.40 Capacity BTU/h 2900 6990 8180 2900 6990 8180 kcal/h 1760 2060 1760...
Page 6 Type Cross-Flow Fan Material ASG20K1 Motor Type Transistor (8-poles) Input Power 47.3 - 47.3 Output Power Cool Heat Cool Heat Cool Speed Heat Cool 1090 Heat 1150 Cool 1190 Heat 1250 Type Propeller Fan Material Motor Type DC Motor (8-poles) Input Power Output Power Cool...
Page 7 Inner Diameter 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 (Blue Coated) Outdoor Fin Type...
Page 8 Indoor CS-E9NKR Model Outdoor CU-E9NKR Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.90 2.60 3.00 0.90 2.60 3.00 Capacity BTU/h 3070 8870 10200 3070 8870 10200 kcal/h 2240 2580 2240 2580 Running Current Input Power 4.29 4.73...
Page 9 Type Cross-Flow Fan Material ASG20K1 Motor Type Transistor (8-poles) Input Power 47.3 - 47.3 Output Power Cool Heat Cool Heat Cool Speed Heat 1010 Cool 1140 Heat 1200 Cool 1240 Heat 1300 Type Propeller Fan Material Motor Type DC Motor (8-poles) Input Power Output Power Cool...
Page 10 Inner Diameter 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 (Blue Coated) Outdoor Fin Type...
Page 11 Indoor CS-E12NKR Model Outdoor CU-E12NKR Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.90 3.50 4.00 0.90 3.50 4.00 Capacity BTU/h 3070 11900 13600 3070 11900 13600 kcal/h 3010 3440 3010 3440 Running Current Input Power 1.10k 1.10k...
Page 12 Type Cross-Flow Fan Material ASG20K1 Motor Type Transistor (8-poles) Input Power 47.3 - 47.3 Output Power Cool Heat Cool Heat Cool Speed Heat 1090 Cool 1220 Heat 1320 Cool 1320 Heat 1360 Type Propeller Fan Material Motor Type DC Motor (8-poles) Input Power Output Power Cool...
Page 13 Inner Diameter 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 (Blue Coated) Outdoor Fin Type...
Page 14 Indoor CS-E15NKR Model Outdoor CU-E15NKR Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.90 4.40 5.00 0.90 4.40 5.00 Capacity BTU/h 3070 15000 17100 3070 15000 17100 kcal/h 3780 4300 3780 4300 Running Current Input Power 1.20k 1.60k...
Page 15 Type Cross-Flow Fan Material ASG20K1 Motor Type Transistor (8-poles) Input Power 94.8 - 94.8 Output Power Cool Heat Cool Heat Cool 1090 Speed Heat 1130 Cool 1350 Heat 1370 Cool 1370 Heat 1370 Type Propeller Fan Material Motor Type Induction (6-poles) Input Power Output Power Speed...
Page 16 Inner Diameter 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 (Blue Coated) Outdoor Fin Type...
Page 17 Indoor CS-E18NKR Model Outdoor CU-E18NKR Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.90 5.00 6.00 0.90 5.00 6.00 Capacity BTU/h 3070 17100 20500 3070 17100 20500 kcal/h 4300 5160 4300 5160 Running Current Input Power 1.30k 2.05k...
Page 18 Type Cross-Flow Fan Material ASG30K1 Motor Type Transistor (8-poles) Input Power 94.8 - 94.8 Output Power Cool Heat Cool Heat Cool 1110 Speed Heat 1130 Cool 1280 Heat 1300 Cool 1400 Heat 1420 Type Propeller Fan Material Motor Type Induction (6-poles) Input Power Output Power Speed...
Page 19 Inner Diameter Drain Hose Length Fin Material Aluminium (Pre Coat) Fin Type Slit Fin Indoor Heat Exchanger Row x Stage x FPI 2 x 15 x 19 Size (W x H x L) 810 x 315 x 25.4 Fin Material Aluminium (Blue Coated) Outdoor Fin Type...
Page 20 Indoor CS-E21NKR Model Outdoor CU-E21NKR Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 1.70 6.30 7.10 1.70 6.30 7.10 Capacity BTU/h 5800 21500 24200 5800 21500 24200 kcal/h 1460 5420 6110 1460 5420 6110 Running Current Input Power...
Page 21 Type Cross-Flow Fan Material ASG30K1 Motor Type Transistor (8-poles) Input Power 94.8 - 94.8 Output Power Cool Heat Cool Heat 1000 Cool 1150 Speed Heat 1190 Cool 1350 Heat 1390 Cool 1400 Heat 1490 Type Propeller Fan Material Motor Type Induction (6-poles) Input Power Output Power...
Page 22 Inner Diameter 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) 810 x 315 x 25.4 Fin Material Aluminium (Blue Coated) Outdoor Fin Type...
Page 23 Indoor CS-E24NKR Model Outdoor CU-E24NKR Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 1.70 7.10 8.10 1.70 7.10 8.10 Capacity BTU/h 5800 24200 27600 5800 24200 27600 kcal/h 1460 6110 6970 1460 6110 6970 Running Current Input Power...
Page 24 Type Cross-Flow Fan Material ASG30K1 Motor Type Transistor (8-poles) Input Power 94.8 - 94.8 Output Power Cool Heat Cool Heat 1060 Cool 1230 Speed Heat 1250 Cool 1470 Heat 1440 Cool 1530 Heat 1540 Type Propeller Fan Material Motor Type DC Motor (8-poles) Input Power Output Power...
Page 25 Inner Diameter 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) 25.4 x 315 x 810 Fin Material Aluminium (Blue Coated) Outdoor Fin Type...
Page 26 Indoor CS-E28NKR Model Outdoor CS-E28NKR Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 2.30 8.00 8.60 2.30 8.00 8.60 Capacity BTU/h 7840 27300 29300 7840 27300 29300 kcal/h 1980 6880 7400 1980 6880 7400 Running Current 11.2...
Page 27 Type Cross-Flow Fan Material ASG30K1 Motor Type Transistor (8-poles) Input Power 94.8 - 94.8 Output Power Cool Heat 1000 Cool 1070 Heat 1100 Cool 1300 Speed Heat 1330 Cool 1530 Heat 1560 Cool 1570 Heat 1570 Type Propeller Fan Material Motor Type DC Motor (8-poles) Input Power...
Page 28 Inner Diameter 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) 25.4 x 315 x 810 Fin Material Aluminium (Blue Coated) Outdoor Fin Type...
Page 29: Features
Features Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control E-ion Air Purifying System with Patrol Sensor Active e-ions are released to catch dust particles and bring them back the large positively charged filter Environment Protection Non-ozone depletion substances refrigerant (R410A) Long Installation Piping...
Page 30: Location Of Controls And Components
4. Location of Controls and Components Indoor Unit Outdoor Unit Remote Control...
Page 31: Dimensions
5. Dimensions Indoor Unit 5.1.1 CS-E7NKR CS-E9NKR CS-E12NKR CS-E15NKR...
Page 32 5.1.2 CS-E18NKR CS-E21NKR CS-E24NKR CS-E28NKR...
Page 33: Outdoor Unit
Outdoor Unit 5.2.1 CU-E7NKR CU-E9NKR CU-E12NKR 5.2.2 CU-E15NKR CU-E18NKR CU-E21NKR CU-E24NKR...
Page 34 5.2.3 CU-E28NKR...
Page 35: Refrigeration Cycle Diagram
6. Refrigeration Cycle Diagram CU-E7NKR...
Page 36: Cu-E9Nkr Cu-E12Nkr
CU-E9NKR CU-E12NKR...
Page 37: Cu-E15Nkr Cu-E18Nkr
CU-E15NKR CU-E18NKR...
Page 38: Cu-E21Nkr
CU-E21NKR...
Page 39: Cu-E24Nkr Cu-E28Nkr
CU-E24NKR CU-E28NKR...
Page 40: Block Diagram
7. Block Diagram CU-E7NKR CU-E9NKR CU-E12NKR...
Page 41: Cu-E15Nkr Cu-E18Nkr Cu-E21Nkr
CU-E15NKR CU-E18NKR CU-E21NKR...
Page 42: Cu-E24Nkr
CU-E24NKR...
Page 43: Cu-E28Nkr
CU-E28NKR...
Page 44: Wiring Connection Diagram
8. Wiring Connection Diagram Indoor Unit...
Page 45: Outdoor Unit
Outdoor Unit 8.2.1 CU-E7NKR CU-E9NKR CU-E12NKR...
Page 46 8.2.2 CU-E15NKR CU-E18NKR...
Page 47 8.2.3 CU-E21NKR...
Page 48 8.2.4 CU-E24NKR...
Page 49 8.2.5 CU-E28NKR...
Page 50: Electronic Circuit Diagram
9. Electronic Circuit Diagram Indoor Unit...
Page 51: Outdoor Unit
Outdoor Unit 9.2.1 CU-E7NKR CU-E9NKR CU-E12NKR...
Page 52 9.2.2 CU-E15NKR CU-E18NKR...
Page 53 9.2.3 CU-E21NKR...
Page 54 9.2.4 CU-E24NKR...
Page 55 9.2.5 CU-E28NKR...
Page 56: Printed Circuit Board
10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board 10.1.2 Indicator Printed Circuit Board...
Page 57 10.1.3 Receiver Printed Circuit Board 10.1.4 High Voltage Power Supply Printed Circuit Board 10.1.5 Comparator Printed Circuit Board...
Page 58 10.1.6 Human Activity Sensor Printed Circuit Board...
Page 59: Outdoor Unit
10.2 Outdoor Unit 10.2.1 CU-E7NKR CU-E9NKR CU-E12NKR...
Page 60 10.2.2 CU-E15NKR CU-E18NKR...
Page 61 10.2.3 CU-E21NKR CU-E24NKR...
Page 62 10.2.4 CU-E28NKR...
Page 63 10.2.5 Noise Filter Printed Board (CU-E21NKR)
Page 64: Installation Instruction
11. Installation Instruction 11.1 Select the Best Location 11.1.3 Indoor/Outdoor Unit Installation Diagram (For E7/9/12/15/18/21/24NKR only) 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 65: Indoor Unit
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 it from vibration. Insert the piping sleeve to the hole. Fix the bushing to the sleeve.
Page 66 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 67 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 68 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 is 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 69: Outdoor Unit
11.3 Outdoor Unit 11.3.1 Install the Outdoor Unit After selecting the best location, start installation 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 70: Connect The Cable To The Outdoor Unit
Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes. Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERENT GAS LEAKAGE. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
Page 71: Piping Insulation
Secure the power supply cord and connecting 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 72: Installation Instruction
12. Installation Instruction 12.1 Select the Best Location 12.1.3 Indoor/Outdoor Unit Installation Diagram (For E28NKR only) 12.1.1 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 73: Indoor Unit
12.2 Indoor Unit 12.2.1 How to Fix Installation Plate 12.2.2 To Drill a Hole in the Wall and The mounting wall shall be strong and solid enough to Install a Sleeve of Piping prevent it from vibration. Insert the piping sleeve to the hole. Fix the bushing to the sleeve.
Page 74 12.2.3.1 For the right rear piping 12.2.3.2 For the right and right bottom piping 12.2.3.3 For the embedded piping (This can be used for left rear piping and bottom piping also.)
Page 75 12.2.4 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 76 12.2.4.1 Cutting and flaring the piping Please cut using pipe cutter and then remove the burrs. Remove the burrs by using reamer. If burrs is 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 77: Outdoor Unit
12.3 Outdoor Unit 12.3.1 Install the Outdoor Unit After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. If installing the unit to a concrete base or other solid base, use M10 or W3/8 bolts and nuts to secure the unit, and ensure that the unit is fully upright and level.
Page 78: Evacuation Of The Equipment
The cardboard must be removed before installation of piping work. 12.3.3 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 79 Connecting cable between outdoor unit and DRED (Demand response enabling devices) shall be double insulation layer, polychloroprene sheathed (>50V) with size 4 x (0.5 mm to 2.0 mm ) cable or flexible cord, where the maximum allowable length is 30m. Connect the power supply cord and connecting cable between indoor unit and outdoor unit according to the diagram below.
Page 80: Operation Control
13. Operation Control 13.1 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 81: Indoor Fan Motor Operation
13.1.5 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 82: Outdoor Fan Motor Operation
The indoor fan will operate according to pattern below. [Heating] According to indoor pipe temperature, automatic heating fan speed is determined as follows. 13.2.2 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 83: Airflow Direction
13.4 Airflow Direction There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes). Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).
Page 84: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)
Manual horizontal airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as Figure 2 above. Pattern Airflow Direction Patterns at Remote Control Vane Angle (°) 13.5 Quiet operation (Cooling Mode/Cooling area of Dry Mode) Purpose To provide quiet cooling operation compare to normal operation.
Page 85: 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 86: Indication Panel
13.10 Indication Panel POWER TIMER POWERFUL nanoe-G AUTO COMFORT QUIET Color Green Orange Orange Blue Green Green POWERFUL Mode AUTO COMFORT QUIET Mode Light ON Operation ON Timer Setting ON nanoe-G ON POWERFUL Mode AUTO COMFORT QUIET Mode Light OFF Operation OFF Timer Setting OFF nanoe-G OFF Note: If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation...
Page 87 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 88: 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 89 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 90 13.13.1.1 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 91 13.13.1.7 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 92 13.13.2.1 ECONAVI 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 93 13.13.2.2 Infrared Sensor Abnormality Abnormality detection: Connector disconnection / Wire cut abnormality Sensor judge Hi level continuously for 25 seconds Circuit abnormality 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 94 13.13.3 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 13.13.3.1 Sunlight Intensity Reset The sunlight intensity will to reset to zero (no sunlight condition) when Each time ECONAVI is activated.
Page 95 13.13.3.3 Judge Ambient Condition According to sunlight intensity over a period of time, the system will analyze the ambient condition is sunny, cloudy or night. 13.13.3.4 Temperature Shift 13.13.3.5 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 96 13.13.3.6 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 97: 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 98 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 99: Protection Control For Cooling & Soft Dry Operation
14.1.7 Low Frequency Protection Control 2 When all the below conditions comply, the compressor frequency will change to lower frequency. Temperature, T, for: Cooling/Soft Dry Heating T < 14 or T ≥ 30 T < 14 or T ≥ 28 Indoor intake air (°C) T <...
Page 100: Protection Control For Heating Operation
14.2.5 Dew Prevention Control 1 To prevent dew formation at indoor unit discharge area. This control will be activated if: Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled. When Cooling or Dry mode is operated more than 20 minutes or more. This control stopped if: Compressor stopped.
Page 101 14.3.4 Low Temperature Compressor Oil Return Control In heating operation, if the outdoor temperature falls below -10°C (E7 ~ 18NK), -8°C (E21 ~ 28NK) when compressor starts, the compressor frequency will be regulated up to 600 seconds. 14.3.5 Cold Draught Prevention Control When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced.
Page 102: 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 103: 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 104 15.2.2 RESET (RC) To clear and restore the remote control setting to factory default. Press once to clear the memory 15.2.3 RESET (AC) To restore the unit’s setting to factory default Press once to restore the unit’s setting. TIMER ▲ 15.2.4 To change indoor unit indicator’s LED intensity Press continuously for 5 seconds.
Page 105: 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 106 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 107: 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 108: Error Code Table
16.3 Error Code Table...
Page 110: 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 111 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 112 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 113 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 114 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 115 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 116 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 117 16.4.8 H25 (e-ion Air Purifying System Abnormal) Malfunction Decision Conditions During standby of cooling and heating operation, e-ion breakdown occurs and air conditioner stops operation. Malfunction Caused Faulty indoor main PCB. Faulty indoor e-ion power module. Troubleshooting...
Page 118 16.4.9 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 119 16.4.10 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 120 16.4.11 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 121 16.4.12 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 122 16.4.13 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 123 16.4.14 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 124 16.4.15 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 125 16.4.16 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 126 16.4.17 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 127 16.4.18 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 128 16.4.19 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 129 16.4.20 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 130 16.4.21 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 131 16.4.22 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 132 16.4.23 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 133 16.4.24 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 134 16.4.25 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 135 16.4.26 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 136 16.4.27 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 137 16.4.28 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 138 16.4.29 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 139: Disassembly And Assembly Instructions
17. Disassembly and Assembly Instructions WARNING High Voltage is 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 17.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal...
Page 140 17.1.1.3 To remove discharge grille...
Page 141 17.1.1.4 To remove control board 17.1.1.5 To remove cross flow fan and indoor fan motor...
Page 143: Cs-E18Nk Cs-E21Nk Cs-E24Nk Cs-E28Nk
17.2 CS-E18NK CS-E21NK CS-E24NK CS-E28NK 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 144 17.2.1.3 To remove power electronic controller...
Page 145 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 147: Outdoor Electronic Controller Removal Procedure
17.3 Outdoor Electronic Controller Removal Procedure 17.3.1 CU-E7NKR CU-E9NKR CU-E12NKR 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.5 Remove the screw of the Terminal Board...
Page 148 17.3.2 CU-E15NKR CU-E18NKR CU-E21NKR 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.2 Fig.5 Remove the Top Cover of the Electronic Controller.
Page 149 17.3.3 CU-E24NKR 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 Controller.
Page 150: Technical Data
18. Technical Data 18.1 Operation Characteristics 18.1.1 CU-E7NKR Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 18.800 18.300 17.800 17.300 16.800 Outdoor Air Temperature (°C) 2.300 2.100 1.900 1.700 1.500 Outdoor Air Temperature (°C) 2.600 2.400 2.200...
Page 151 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed Comp. Hz: F 17.300 17.200 17.100 17.000 Piping Length (m) 2.150 2.100 2.050 2.000 Piping Length (m) 1.250 1.200 1.150 1.100 Piping Length (m) 2.211 2.209 2.207 2.205 2.203 2.201...
Page 152 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 44.700 42.700 40.700 38.700 36.700 34.700 32.700 30.700 28.700 26.700 24.700 -15 -13 -11 -9 -7 -5 -3 -1 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 3.640 3.140...
Page 153 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed Comp. Hz: F 34.200 34.100 34.000 33.900 33.800 33.700 33.600 Piping Length (m) 2.800 2.780 2.760 2.740 2.720 2.700 Piping Length (m) 2.180 2.170 2.160 2.150 2.140 2.130 2.120 Piping Length (m)
Page 154 18.1.2 CU-E9NKR Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 18.000 17.500 17.000 16.500 16.000 15.500 Outdoor Air Temperature (°C) 3.000 2.800 2.600 2.400 2.200 2.000 Outdoor Air Temperature (°C) 2.900 2.700 2.500 2.300...
Page 155 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed Comp. Hz: F 16.000 15.900 15.800 15.700 Piping Length (m) 2.620 2.600 2.580 2.560 2.540 Piping Length (m) 1.040 1.035 1.030 1.025 Piping Length (m) 2.630 2.610 2.590 2.570 2.550...
Page 156 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 45.600 43.600 41.600 39.600 37.600 35.600 33.600 31.600 29.600 27.600 25.600 -15 -13 -11 -9 -7 -5 -3 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 4.500 4.000...
Page 157 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed Comp. Hz: F 35.600 35.400 35.200 35.000 34.800 34.600 34.400 Piping Length (m) 3.600 3.550 3.500 3.450 3.400 3.350 Piping Length (m) 2.390 2.370 2.350 2.330 2.310 2.290 2.270 2.250...
Page 158 18.1.3 CU-E12NKR Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 17.000 16.500 16.000 15.500 15.000 14.500 Outdoor Air Temperature (°C) 3.900 3.700 3.500 3.300 3.100 2.900 2.700 Outdoor Air Temperature (°C) 4.200 4.000 3.800...
Page 159 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed Comp. Hz: F 14.950 14.900 14.850 14.800 14.750 Piping Length (m) 3.520 3.500 3.480 3.460 3.440 3.420 Piping Length (m) 0.974 0.972 0.970 0.968 0.966 0.964 Piping Length (m) 3.960 3.940 3.920...
Page 160 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 50.800 48.800 46.800 44.800 42.800 40.800 38.800 36.800 34.800 32.800 30.800 28.800 -15 -13 -11 -9 -7 -5 -3 -1 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 6.100 5.600...
Page 161 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed Comp. Hz: F 40.500 40.000 39.500 39.000 38.500 Piping Length (m) 4.900 4.850 4.800 4.750 4.700 4.650 4.600 Piping Length (m) 2.750 2.700 2.650 2.600 2.550 Piping Length (m) 5.650 5.600 5.550...
Page 162 18.1.4 CU-E15NKR Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed Comp. Hz: F Piping Length: 5m 14.800 14.300 13.800 13.300 12.800 12.300 Outdoor Air Temperature (°C) 5.300 5.100 4.900 4.700 4.500 4.300 4.100 3.900 3.700 Outdoor Air Temperature (°C) 6.700 6.200 5.700...
Page 163 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed Comp. Hz: F 13.750 13.700 13.650 13.600 13.550 13.500 Piping Length (m) 4.500 4.400 4.300 4.200 4.100 Piping Length (m) 0.960 0.950 0.940 0.930 0.920 0.910 0.900 0.890 Piping Length (m) 5.500...
Page 164 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 53.700 51.700 49.700 47.700 45.700 43.700 41.700 39.700 37.700 35.700 33.700 -15 -13 -11 -9 -7 -5 -3 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 7.200 6.200...
Page 165 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed Comp. Hz: F 41.500 41.000 40.500 40.000 39.500 39.000 Piping Length (m) 5.600 5.400 5.200 5.000 4.800 Piping Length (m) 2.900 2.800 2.700 2.600 2.500 2.400 Piping Length (m) 6.800 6.600 6.400...
Page 166 18.1.5 CU-E18NKR Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed Comp. Hz: F Piping Length: 5m 16.200 15.700 15.200 14.700 14.200 13.700 13.200 Outdoor Air Temperature (°C) 6.200 5.700 5.200 4.700 4.200 Outdoor Air Temperature (°C) 7.100 6.600 6.100 5.600...
Page 167 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed Comp. Hz: F 14.850 14.800 14.750 14.700 14.650 14.600 14.550 Piping Length (m) 5.100 5.000 4.900 4.800 4.700 Piping Length (m) 0.960 0.950 0.940 0.930 0.920 0.910 0.900 0.890 Piping Length (m)
Page 168 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 53.400 51.400 49.400 47.400 45.400 43.400 41.400 39.400 37.400 35.400 33.400 -15 -13 -11 -9 -7 -5 -3 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 8.600 7.600...
Page 169 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed Comp. Hz: F 40.000 39.500 39.000 38.500 38.000 37.500 Piping Length (m) 6.400 6.200 6.000 5.800 5.600 Piping Length (m) 2.700 2.600 2.500 2.400 2.300 Piping Length (m) 8.000 7.800 7.600...
Page 170 18.1.6 CU-E21NKR Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed Comp. Hz: F Piping Length: 5m 15.800 15.300 14.800 14.300 13.800 13.300 12.800 12.300 11.800 Outdoor Air Temperature (°C) 7.300 6.800 6.300 5.800 5.300 4.800 Outdoor Air Temperature (°C) 8.800 8.300 7.800...
Page 171 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed Comp. Hz: F 15.100 14.900 14.700 14.500 14.300 14.100 13.900 Piping Length (m) 6.500 6.400 6.300 6.200 6.100 Piping Length (m) 0.900 0.800 0.700 0.600 0.500 Piping Length (m) 8.500 8.450 8.400...
Page 172 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed Comp. Hz: F Piping Length: 7.5m 52.600 50.600 48.600 46.600 44.600 42.600 40.600 38.600 36.600 34.600 -15 -13 -11 -9 -7 -5 -3 -1 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 9.200 8.200...
Page 173 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed Comp. Hz: F 40.600 39.600 38.600 37.600 36.600 35.600 34.600 33.600 Piping Length (m) 7.700 7.200 6.700 6.200 5.700 5.200 Piping Length (m) 3.000 2.800 2.600 2.400 2.200 2.000 1.800...
Page 174 18.1.7 CU-E24NKR Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed Comp. Hz: F Piping Length: 5m 14.200 13.700 13.200 12.700 12.200 11.700 11.200 10.700 Outdoor Air Temperature (°C) 7.900 7.400 6.900 6.400 5.900 5.400 Outdoor Air Temperature (°C) 9.800 9.300 8.800...
Page 175 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed Comp. Hz: F 13.800 13.600 13.400 13.200 13.000 12.800 12.600 Piping Length (m) 7.300 7.200 7.100 7.000 6.900 Piping Length (m) 0.920 0.870 0.820 0.770 0.720 0.670 0.620 0.570 Piping Length (m)
Page 176 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed Comp. Hz: F Piping Length: 5m 55.100 53.100 51.100 49.100 47.100 45.100 43.100 41.100 39.100 37.100 35.100 -15 -13 -11 -9 -7 -5 -3 -1 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 10.400 9.400...
Page 177 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed Comp. Hz: F 43.000 41.000 39.000 37.000 35.000 Piping Length (m) 8.300 7.800 7.300 6.800 6.300 5.800 Piping Length (m) 3.100 2.900 2.700 2.500 2.300 2.100 1.900 Piping Length (m) 10.800 10.300...
Page 178 18.1.8 CU-E28NKR Cooling Characteristic [Condition] Indoor temperature: 27/19°C Remote condition: High fan speed Comp. Hz: F Piping Length: 5m 14.200 13.700 13.200 12.700 12.200 11.700 11.200 10.700 Outdoor Air Temperature (°C) 9.100 8.600 8.100 7.600 7.100 6.600 6.100 Outdoor Air Temperature (°C) 11.400 10.900 10.400...
Page 179 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed Comp. Hz: F 13.800 13.600 13.400 13.200 13.000 12.800 12.600 Piping Length (m) 8.200 8.100 8.000 7.900 7.800 Piping Length (m) 0.840 0.790 0.740 0.690 0.640 0.590 0.540 Piping Length (m) 11.500...
Page 180 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed Comp. Hz: F Piping Length: 5m 55.100 53.100 51.100 49.100 47.100 45.100 43.100 41.100 39.100 37.100 35.100 -15 -13 -11 -9 -7 -5 -3 -1 11 13 15 17 19 21 23 25 Outdoor Air Temperature (°C) 11.700 10.700...
Page 181 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed Comp. Hz: F 42.000 41.000 40.000 39.000 38.000 37.000 36.000 35.000 34.000 Piping Length (m) 9.500 9.000 8.500 8.000 7.500 7.000 6.500 Piping Length (m) 3.200 3.000 2.800 2.600 2.400...
Page 182: Sensible Capacity Chart
18.2 Sensible Capacity Chart CU-E7NKR INDOOR OUTDOOR TEMPERATURE (°C DB) CU-E7NKR °C °C 51.8 1.99 1.98 0.36 2.01 1.91 0.39 1.95 1.89 0.42 1.91 1.87 0.43 54.1 2.10 1.95 0.36 2.10 1.88 0.39 2.03 1.86 0.42 1.99 1.86 0.44 50.0 2.17 1.97 0.36...
Page 183 CU-E12NKR INDOOR OUTDOOR TEMPERATURE (°C DB) CU-E12NKR °C °C 51.8 3.34 2.96 0.64 3.35 2.86 0.70 3.27 2.82 0.76 3.23 2.80 0.78 54.1 3.54 2.91 0.64 3.50 2.81 0.70 3.42 2.78 0.76 3.36 2.78 0.79 50.0 3.66 2.94 0.65 3.62 2.85 0.71 3.53...
Page 184 CU-E18NKR INDOOR OUTDOOR TEMPERATURE (°C DB) CU-E18NKR °C °C 51.8 4.99 3.97 1.00 4.83 3.84 1.10 4.66 3.79 1.19 4.59 3.76 1.23 54.1 5.29 3.91 1.01 5.06 3.78 1.10 4.86 3.74 1.20 4.78 3.73 1.24 50.0 5.46 3.96 1.02 5.22 3.83 1.11 5.03...
Page 185 CU-E24NKR INDOOR OUTDOOR TEMPERATURE (°C DB) CU-E24NKR °C °C 51.8 6.70 5.28 1.63 6.61 5.11 1.78 6.52 5.03 1.93 6.48 5.00 1.99 54.1 7.09 5.20 1.64 6.92 5.02 1.79 6.81 4.97 1.94 6.75 4.96 2.00 50.0 7.33 5.26 1.65 7.15 5.10 1.80 7.04...
Page 186: Exploded View And Replacement Parts List
19. Exploded View and Replacement Parts List 19.1 Indoor Unit 19.1.1 CS-E7NKR CS-E9NKR CS-E12NKR CS-E15NKR 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 PART NAME & DESCRIPTION QTY. CS-E7NKR CS-E9NKR CS-E12NKR CS-E15NKR REMARK ← ← ← CHASSIS COMPLETE CWD50C1653 ← ← FAN MOTOR ARW7628AC ARW7627AC ← ← ← CROSS FLOW FAN COMPLETE CWH02C1076 ← ← ← BEARING ASS’Y CWH64K1006 ← ← ← SCREW - CROSS FLOW FAN CWH551146 ←...
Page 188 19.1.2 CS-E18NKR CS-E21NKR CS-E24NKR CS-E28NKR 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 PART NAME & DESCRIPTION QTY. CS-E18NKR CS-E21NKR CS-E24NKR CS-E28NKR REMARK ← ← ← CHASSIS COMPLETE CWD50C1623 ← ← ← FAN MOTOR ARW7627AC ← ← ← CROSS FLOW FAN COMPLETE CWH02C1077 ← ← ← BEARING ASS’Y CWH64K1006 ← ← ← SCREW - CROSS FLOW FAN CWH551146 ←...
Page 190: Outdoor Unit
19.2 Outdoor Unit 19.2.1 CU-E7NKR CU-E9NKR CU-E12NKR 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 191 REF. NO. DESCRIPTION & NAME QTY. CU-E7NKR CU-E9NKR CU-E12NKR REMARK ← ← BASE PAN ASS'Y CWD52K1277 ← SOUND PROOF MATERIAL CWG302314 CWG302719 ← ← FAN MOTOR BRACKET CWD541167 ← ← SCREW - FAN MOTOR BRACKET CWH551217 ← ← FAN MOTOR ARS6411AC ←...
Page 192 19.2.2 CU-E15NKR CU-E18NKR 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 193 REF. NO. DESCRIPTION & NAME QTY. CU-E15NKR CU-E18NKR REMARK ← BASE PAN ASS'Y CWD52K1191 ← ANTI - VIBRATION BUSHING CWH50077 ← COMPRESSOR 5RD132XFA21 ← NUT - COMPRESSOR MOUNT CWH56000J ← SOUND PROOF MATERIAL CWG302629 ← FAN MOTOR BRACKET CWD541126 ← FAN MOTOR CWA951620 ←...
Page 194 ← SHOCK ABSORBER (LEFT) CWG712880 ← C.C. CASE CWG565614 (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
Page 195 19.2.3 CU-E21NKR 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 196 REF. NO. DESCRIPTION & NAME QTY. CU-E21NKR REMARK BASE PAN ASS'Y CWD52K1190 ANTI - VIBRATION BUSHING CWH50055 PACKING CWB81043 COMPRESSOR 5KD240XAF21 NUT - COMPRESSOR MOUNT CWH561049 FAN MOTOR BRACKET CWD541126 FAN MOTOR CWA951671 SCREW - FAN MOTOR BRACKET CWH551217 SCREW - FAN MOTOR MOUNT CWH551040J PROPELLER FAN ASS’Y CWH001019...
Page 197 SHOCK ABSORBER (LEFT) CWG712880 C.C. CASE CWG565614 (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
Page 198 19.2.4 CU-E24NKR 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 199 REF. NO. DESCRIPTION & NAME QTY. CU-E24NKR REMARK BASE PAN ASS'Y CWD52K1190 ANTI - VIBRATION BUSHING CWH50055 PACKING CWB81043 COMPRESSOR 5KD240XAF21 NUT - COMPRESSOR MOUNT CWH561049 FAN MOTOR BRACKET CWD541127 FAN MOTOR EHDS80C60AC SCREW - FAN MOTOR BRACKET CWH551217 SCREW - FAN MOTOR MOUNT CWH551323 PROPELLER FAN ASS’Y CWH00K1006...
Page 200 SHOCK ABSORBER (LEFT) CWG712880 C.C. CASE CWG565546 (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
Page 201 19.2.5 CU-E28NKR...
Page 203 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 204 REF. NO. DESCRIPTION & NAME QTY. CU-E28NKR REMARK BASE PAN ASS'Y CWD52K1295 COMPRESSOR 5KD240XAF21 ANTI - VIBRATION BUSHING CWH50055 NUT - COMPRESSOR MOUNT CWH561049 PACKING CWB811017 CRANKCASE HEATER CWA341080 CONDENSER COMPLETE CWB32C3300 SOUND PROOF MATERIAL CWG302246 DISCHARGE MUFFLER CWB121013 3 WAYS VALVE (GAS) CWB011251 4 WAYS VALVE CWB001026J...
Page 205 SHOCK ABSORBER (LEFT) CWG712854 C.C.CASE CWG567822 (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock. Printed in Malaysia FB0712 - 0...

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Cs-e12nkr Cs-e15nkr Cs-e9nkr Cs-e18nkr Cs-e21nkr Cs-e24nkr ... Show all

Panasonic CS-E7NKR Service Manual

1 Safety Precautions

2 Specification

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 Installation Instruction

13 Operation Control

14 Protection Control

15 Servicing Mode

16 Troubleshooting Guide

17 Disassembly and Assembly Instructions

18 Technical Data

19 Exploded View and Replacement Parts List

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