Panasonic CS-E7NKDW Service Manual
  1. Manuals
  2. Brands
  3. Panasonic Manuals
  4. Air Conditioner
  5. CS-E7NKDW
  6. Service manual

Panasonic CS-E7NKDW Service Manual

Hide thumbs Also See for CS-E7NKDW:
Table of Contents

Advertisement

Quick Links

Please file and use this manual together with the service manual for Model No. U-2E18CBPG, Order No. RAC0209005C2, Model No.
U-3E18JBE, U-4E23JBE, Order No. PHAAM1004141C2 and Model No. U-2E15GBE, Order No. MAC0704001A2.
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
Indoor Unit
CS-E7NKDW
CS-E9NKDW
CS-E12NKDW
CS-E15NKDW
CS-E18NKDW
WARNING
PRECAUTION OF LOW TEMPERATURE
Order No: PHAAM1112080C2
Outdoor Unit
CU-E7NKD
CU-E9NKD
CU-E12NKD
CU-E15NKD
CU-E18NKD
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011.
Unauthorized copying and distribution is a violation of law.

Advertisement

Table of Contents
loading

Related Manuals for Panasonic CS-E7NKDW

Summary of Contents for Panasonic CS-E7NKDW

  • 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 HA Air-Conditioning (M) Sdn. Bhd. 2011. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 13.2 Soft Dry Operation........62 1. Safety Precautions ..........3 13.3 Heating Operation ........62 13.4 Automatic Operation........63 2. Specification ............5 13.5 Indoor Fan Motor Operation ...... 63 3. Features.............19 13.6 Powerful Mode Operation......63 13.7 Auto restart control ........63 4.

  • 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 cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc). 20.

  • Page 5: Specification

    2. Specification Indoor CS-E7NKDW CS-E9NKDW Model Outdoor CU-E7NKD CU-E9NKD Performance Test Condition Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 0.75 2.05 2.40 0.75 2.05 2.40 0.85 2.50 3.00...
  • 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 1030 Cool 1050 1180 Heat 1090 1240 Cool 1110 1240 Heat 1150 1280 Type Propeller Fan Propeller Fan...
  • Page 7 Inner Diameter 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-E12NKDW CS-E15NKDW Model Outdoor CU-E12NKD CU-E15NKD Performance Test Condition Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. 0.85 3.50 4.00 0.85 3.50 4.00 0.85 4.20 5.00 0.85 4.20 5.00 Capacity...
  • 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 1000 Cool Heat 1010 1080 Cool 1040 1070 Speed Heat 1150 1210 Cool 1260 1270 Heat 1300 1350 Cool 1320 1340...
  • Page 10 Inner Diameter 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-E18NKDW Model Outdoor CU-E18NKD Performance Test Condition Phase, Hz Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.98 5.00 6.00 0.98 5.00 6.00 Capacity BTU/h 3340 17100 20500 3340 17100 20500 Kcal/h 4300 5160 4300 5160 Running Current Input Power 1.47k 2.03k...
  • Page 12 Type Cross-flow Fan Material ASG30K1 Motor Type Transistor (8-poles) Input Power 94.8 Output Power Cool Heat 1040 Cool 1040 Heat 1120 Cool 1160 Speed Heat 1240 Cool 1280 Heat 1360 Cool 1390 Heat 1430 Type Propeller Fan Material Motor Type Induction (6-poles) Input Power Output Power...
  • 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 17 Size (W x H x L) 810 x 315 x 25.4 Fin Material Aluminium (Blue Coat) Outdoor Fin Type...
  • Page 14 Multi Split Combination Possibility: A single outdoor unit enables air conditioning of up to two separate rooms for U-2E15GBE, U-2E18CBPG.
  • Page 15 Outdoor Unit : U-2E15GBE Outdoor Unit : U-2E18CBPG...
  • Page 16 Outdoor Unit : U-3E18JBE...
  • Page 17 Outdoor Unit : U-4E23JBE...

  • Page 19: Features

    Features Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control Air Purifying System with nanoe-G Deactivates and removes bacterial, viruses and mould 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 20: Location Of Controls And Components

    4. Location of Controls and Components Indoor Unit Outdoor Unit Remote Control...

  • Page 21: Dimensions

    5. Dimensions Indoor Unit 5.1.1 CS-E7NK CS-E9NK CS-E12NK CS-E15NK...
  • Page 22 5.1.2 CS-E18NK...

  • Page 23: Outdoor Unit

    Outdoor Unit 5.2.1 CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD 5.2.2 CU-E18NKD...

  • Page 24: Refrigeration Cycle Diagram

    6. Refrigeration Cycle Diagram CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD...

  • Page 25: Cu-E18Nkd

    CU-E18NKD...

  • Page 26: Block Diagram

    7. Block Diagram CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD...

  • Page 27: Cu-E18Nkd

    CU-E18NKD...

  • Page 28: Wiring Connection Diagram

    8. Wiring Connection Diagram Indoor Unit 8.1.1 CS-E7NKDW CS-E9NKDW CS-E12NKDW CS-E15NKDW...
  • Page 29 8.1.2 CS-E18NKDW...

  • Page 30: Outdoor Unit

    Outdoor Unit 8.2.1 CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD...
  • Page 31 8.2.2 CU-E18NKD...

  • Page 32: Electronic Circuit Diagram

    9. Electronic Circuit Diagram Indoor Unit 9.1.1 CS-E7NKDW CS-E9NKDW CS-E12NKDW CS-E15NKDW...
  • Page 33 9.1.2 CS-E18NKDW...

  • Page 34: Outdoor Unit

    Outdoor Unit 9.2.1 CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD...
  • Page 35 9.2.2 CU-E18NKD...

  • Page 36: Printed Circuit Board

    10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board...
  • Page 37 10.1.2 Indicator and Receiver Printed Circuit Board 10.1.3 High Voltage Power Supply Printed Circuit Board 10.1.4 Comparator Printed Circuit Board...
  • Page 38 10.1.5 Human Activity Sensor Printed Circuit Board...

  • Page 39: Outdoor Unit

    10.2 Outdoor Unit 10.2.1 CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD...
  • Page 40 10.2.2 CU-E18NKD...

  • Page 41: 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 42: 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 the vibration. Insert the piping sleeve to the hole. Fix the bushing to the sleeve.
  • Page 43 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 44: Connect The Cable To The Indoor Unit

    11.2.4 Connect the Cable to the Indoor Unit The inside and outside connection 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 45 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 46: Outdoor Unit

    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 47: 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 48: 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 screw. For wire stripping and connection requirement, refer to instruction 11.2.4 of indoor unit. WARNING This equipment must be properly earthed.

  • Page 49: Operation And Control

    12. Operation and 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 50: 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, indoor intake air temperature 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 51: 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 52: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)

    Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close position. 12.4.2 Horizontal Airflow For CS-E7/9/12/15NK, the horizontal airflow direction louver can be adjusted manually by hand.

  • Page 53: Quiet Operation (Heating)

    b. Quiet operation stop condition When one of the following conditions is satisfied, quiet operation stops: a. POWERFUL/QUIET button is pressed again. b. Stop by OFF/ON switch. Timer “off” activates. d. AUTO COMFORT button is pressed. e. ECONAVI button is pressed. Mild Dry Cooling button is pressed.

  • Page 54: Auto Restart Control

    12.8.1 ON Timer Control ON timer 1 and ON timer 2 can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time. 60 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.

  • Page 55: Nanoe-G Operation

    12.11 nanoe-G Operation This operation provides clean air by producing great amount of negative ions and distribute through the discharge airflow to capture or deactivate molds, bacteria or viruses. nanoe-G operation start condition During unit running at any operation mode, if nanoe-G operation is activated, combination operation (operation mode + nanoe-G operation) starts.
  • Page 56 nanoe-G check mode To enable nanoe-G check mode, during nanoe-G operation ON: If there is abnormal discharge, nanoe-G indicator blinks immediately. Error detection control When nanoe-G indicator blinks, it indicates error listed below: nanoe-G connector at main PCB open Judgment method During nanoe-G operation, nanoe-G connector at main PCB is opened.

  • Page 57: Mild Dry Cooling Operation

    Troubleshooting method Press nanoe-G button or OFF/ON button to stop the operation. Change nanoe-G high voltage power supply or main PCB. When Lo-feedback voltage supplied to nanoe-G system during nanoe-G operation ON, nanoe-G indicator and Timer indicator stop blinking. 12.12 Mild Dry Cooling Operation This operation helps to prevent decreases in room humidity while maintaining the setting temperature.

  • Page 58: Econavi And Auto Comfort Operation

    12.13 ECONAVI and AUTO COMFORT Operation A Pyoelectric infrared sensor is used to detect injection strength variation of infrared at setting area to determine the presence or absence of human and its activity level. Human detection area is shown in figure below: ECONAVI and AUTO COMFORT operation –...
  • Page 59 ECONAVI and AUTO COMFORT Demo Mode To enable ECO DEMO mode, during unit is OFF (power standby): To disable ECO Demo MODE: Transmit ECO Demo signal again. Control details: During ECONAVI and AUTO COMFORT Demo mode, operation LED ON and horizontal vane will set to Auto Swing.
  • Page 60 ECONAVI and AUTO COMFORT operation could ON when any of the following conditions is fulfilled: During forced cooling or forced heating operation. Power Failure ECONAVI and AUTO COMFORT operation will be resuming after recovered from power failure. Timer Operation When unit is turn on by ON Timer and ECONAVI and AUTO COMFORT operation is ON during previous operation before OFF, ECONAVI and AUTO COMFORT operation will not be ON automatically.
  • Page 61 ECONAVI & AUTO COMFORT Sensor abnormality check mode Purpose is to improve sensor serviceability when sensor is malfunction. 1. Control starting condition To enable infrared sensor check mode, during ECONAVI operation ON: 2. Control ending condition. When all of the conditions are formed Operation stops.

  • Page 62: 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 63: 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 64: 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 65 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 66: Protection Control For Cooling & Soft Dry Operation

    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 67: 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: Compressor OFF →...

  • Page 68: 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 69: 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 70: 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 71 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 72: 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 73: Error Code Table

    16.3 Error Code Table...

  • Page 75: 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 76 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 77 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 78 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 79 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 80 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 81 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 82 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 83 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 84 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 85 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 86 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 87 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 88 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 89 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 90 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 91 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 92 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 93 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 94 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 95 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 96 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 97 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 98 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 99 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 100 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 101 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 102 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 103: Troubleshooting

    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 104: Disassembly And Assembly Instructions

    17. Disassembly and Assembly Instructions WARNING High voltages 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 17.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal...
  • Page 105 Figure 3 Figure 4 17.1.1.3 To remove discharge grille Figure 5...
  • Page 106 17.1.1.4 To remove control board Figure 6 17.1.1.5 To remove cross flow fan and indoor fan motor Figure 7 Figure 8...
  • Page 107 Figure 9 Figure 10...

  • Page 108: Cs-E18Nk

    17.2 CS-E18NK 17.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 17.2.1.1 To remove front grille Figure 11 17.2.1.2 To remove horizontal vane Figure 12 17.2.1.3 To remove electronic controller Figure 13...
  • Page 109 Figure 14 Figure 15 17.2.1.4 To remove discharge grille Figure 16...
  • Page 110 17.2.1.5 To remove control board Figure 17 17.2.1.6 To remove cross flow fan and indoor fan motor Figure 18 Figure 19...
  • Page 111 Figure 20 Figure 21...

  • Page 112: Outdoor Electronic Controller Removal Procedure

    17.3 Outdoor Electronic Controller Removal Procedure 17.3.1 CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD 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. Fig.
  • Page 113 17.3.2 CU-E18NKD Remove the 4 screws of the Top Panel. Remove the Control Board. Fig. 4 Remove the 8 screws of the Electronic Fig. 1 Controller. Remove the 10 screws of the Front Panel. Fig. 2 Fig. 5 Remove the Top Cover of the Electronic Controller.

  • Page 114: Technical Data

    18. Technical Data 18.1 Operation Characteristics 18.1.1 CS-E7NKD 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 115 Piping Length Characteristic [Condition] Indoor temperature: 27/19°C, 35/-°C Remote condition: High fan speed, Cool 16°C Comp. Hz: F 19.200 19.100 19.000 18.900 18.800 18.700 18.600 18.500 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...
  • Page 116 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 35.000 33.000 31.000 29.000 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 2.700 2.500 Outdoor Air Temperature (°C)
  • Page 117 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) 3.150 3.100 3.050...
  • Page 118 18.1.2 CS-E9NKD 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 119 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 120 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 37.000 35.000 33.000 31.000 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) 3.900 3.700 3.500 3.300 3.100...
  • Page 121 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) 3.700 3.600 3.500...
  • Page 122 18.1.3 CS-E12NKD 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 123 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 124 Heating Characteristic [Condition] Indoor temperature: 20/-°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 37.800 35.800 33.800 31.800 29.800 Outdoor Air Temperature (°C) 5.300 4.800 4.300 3.800 3.300 2.800 Outdoor Air Temperature (°C) 5.700 5.500 5.300 5.100 4.900 4.700 4.500 4.300...
  • Page 125 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) 4.450 4.400 4.350 4.300 4.250 4.200 Piping Length (m) 2.480 2.460 2.440 2.420 Piping Length (m) 5.350 5.300...
  • Page 126 18.1.4 CS-E15NKD 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) 5.200 5.000...
  • Page 127 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) 4.300 4.200 4.100 4.000 3.900 3.800 Piping Length (m) 0.940 0.930 0.920 0.910 0.900 0.890...
  • Page 128 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) 7.200 7.000 6.800 6.600 6.400 6.200 6.000...
  • Page 129 Piping Length Characteristic [Condition] Indoor temperature: 20/-°C, 7/6°C Remote condition: High fan speed, Heat 30°C Comp. Hz: F 39.000 38.900 38.800 38.700 38.600 38.500 38.400 Piping Length (m) 5.350 5.300 5.250 5.200 5.150 5.100 5.050 Piping Length (m) 2.820 2.800 2.780 2.760 2.740...
  • Page 130 18.1.5 CS-E18NKD 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 131 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 Piping Length (m) 7.000 6.900 6.800...
  • Page 132 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) 7.500 7.300 7.100 6.900 6.700 6.500 6.300...
  • Page 133 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 2.790 2.780 2.770 Piping Length (m) 7.250 7.150 7.050...

  • Page 134: Sensible Capacity Chart

    18.2 Sensible Capacity Chart CU-E7NKD Outdoor Temp. (°C) 220/230V 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 22.0°C...
  • Page 135 CU-E18NKD Outdoor Temp. (°C) 220/230V 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 136: Exploded View And Replacement Parts List

    19. Exploded View and Replacement Parts List 19.1 Indoor Unit 19.1.1 CS-E7NKDW CS-E9NKDW CS-E12NKDW CS-E15NKDW 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 137 REF. PART NAME & DESCRIPTION QTY. CS-E7NKDW CS-E9NKDW CS-E12NKDW CS-E15NKDW REMARK CHASSIS COMPLETE CWD50C1653 ← ← ← FAN MOTOR ARW7628AC ← ← ← CROSS FLOW FAN COMPLETE CWH02C1076 ← ← ← BEARING ASS'Y CWH64K007 ← ← ← SCREW - CROSS FLOW FAN CWH551146 ←...
  • Page 138 CWG861497 ← ← ← SHOCK ABSORBER ( L ) CWG713386 ← ← ← SHOCK ABSORBER ( R ) CWG713387 ← ← ← C.C.CASE CWG567358 CWG567359 CWG567360 CWG567361 (NOTE) All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
  • Page 139 19.1.2 CS-E18NKDW 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 140 REF. NO. PART NAME & DESCRIPTION QTY. CS-E18NKDW REMARK CHASSIS COMPLETE CWD50C1654 FAN MOTOR ARW7627AC CROSS FLOW FAN COMPLETE CWH02C1077 BEARING ASS'Y CWH64K007 SCREW - CROSS FLOW FAN CWH551146 GENERATOR COMPLETE CWH94C0043 EVAPORATOR CWB30C3860 FLARE NUT (LIQUID) CWT251030 FLARE NUT (GAS) CWT251032 HOLDER SENSOR CWH32143...
  • Page 141 INSTALLATION INSTRUCTION CWF615103 CWG861498 SHOCK ABSORBER ( L ) CWG713402 SHOCK ABSORBER ( R ) CWG713403 C.C.CASE CWG567974 (NOTE) All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.

  • Page 142: Outdoor Unit

    19.2 Outdoor Unit 19.2.1 CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD 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 143 REF. DESCRIPTION & NAME CU-E7NKD CU-E9NKD CU-E12NKD CU-E15NKD REMARK CHASSIS ASS’Y CWD50K2073 ← ← ← SOUND PROOF MATERIAL CWG302447 CWG302292 ← ← FAN MOTOR BRACKET CWD541089 ← ← ← SCREW - FAN MOTOR BRACKET CWH551217 ← ← ← FAN MOTOR CWA951720 CWA951721 CWA951699...
  • Page 144 19.2.2 CU-E18NKD 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 145 REF. NO. DESCRIPTION & NAME CU-E18NKD REMARK CHASSIS ASS’Y CWD52K1261 ANTI - VIBRATION BUSHING CWH50077 COMPRESSOR 5RD132XBA21 NUT - COMPRESSOR MOUNT CWH56000J SOUND PROOF MATERIAL CWG302629 BRACKET FAN MOTOR CWD541153 FAN MOTOR ARW8401AC SCREW - FAN MOTOR BRACKET CWH551217 SCREW - FAN MOTOR MOUNT CWH551106J PROPELLER FAN ASS’Y CWH03K1065...

This manual is also suitable for:

Cs-e15nkdwCs-e12nkdwCs-e18nkdwCu-e7nkdCs-e9nkdwCu-e9nkd ... Show all

Table of Contents