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Panasonic CS-E7HKEW Service Manual
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Panasonic CS-E7HKEW Service Manual

Air conditioner
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  • Page 2: Table Of Contents

    2.1. CS-E7HKEW CU-E7HKE -------------------------------5 12 Operation Control ---------------------------------------------- 45 2.2. CS-E9HKEW CU-E9HKE -------------------------------7 12.1. Basic Function-------------------------------------------- 45 2.3. CS-E12HKEW CU-E12HKE ----------------------------9 12.2. Indoor Fan Motor Operation -------------------------- 46 2.4. CS-E15HKEW CU-E15HKE -------------------------- 11 12.3. Outdoor Fan Motor Operation ------------------------ 47 2.5.
  • Page 3 1. Engage dealer or specialist for installation and servicing. If installation or servicing done by the user is defective, it will cause water leakage, electrical shock or fire. 2. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock or fire. 3.
  • Page 4 7. Power supply connection to the air conditioner. Connect the power supply cord of the air conditioner to the mains using one of the following methods. Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency. In some countries, permanent connection of this room air conditioner to the power supply is prohibited.

  • Page 5: Cs-E7Hkew Cu-E7Hke

    2 Specifications 2.1. CS-E7HKEW CU-E7HKE ITEM UNIT INDOOR UNIT OUTDOOR UNIT Performance Test Condition EUROVENT 2.05 (0.70 ~ 2.40) Capacity kCal/h 1760 (600 ~ 2060) 4.36 (4.12 ~ 4.14) kCal/hW 3.74 (3.53 ~ 3.55) dB (A) High 37, Low 24, QLo 20...
  • Page 6 ITEM UNIT INDOOR UNIT OUTDOOR UNIT Type Cross-Flow Fan Propeller Fan Material ASG20K1 Motor Type Transistor (8-pole) Induction (6-pole) Input Power — Output Power QLo (Cool/Heat) 680 / 780 — Lo (Cool/Heat) 780 / 850 — Fan Speed Me (Cool/Heat) 1010 / 1085 —...

  • Page 7: Cs-E9Hkew Cu-E9Hke

    2.2. CS-E9HKEW CU-E9HKE ITEM UNIT INDOOR UNIT OUTDOOR UNIT Performance Test Condition EUROVENT 2.60 (0.80 ~ 3.00) Capacity kCal/h 2240 (690 ~ 2580) 4.41 (4.57 ~ 4.00) kCal/hW 3.80 (3.94 ~ 3.44) dB (A) High 39, Low 25, QLo 20 High 46 Noise Level Power level dB...
  • Page 8 ITEM UNIT INDOOR UNIT OUTDOOR UNIT Type Cross-Flow Fan Propeller Fan Material ASG20K1 Motor Type Transistor (8-pole) Induction (6-pole) Input Power — Output Power QLo (Cool/Heat) 720 / 890 — Lo (Cool/Heat) 830 / 940 — Fan Speed Me (Cool/Heat) 1070 / 1170 —...

  • Page 9: Cs-E12Hkew Cu-E12Hke

    2.3. CS-E12HKEW CU-E12HKE ITEM UNIT INDOOR UNIT OUTDOOR UNIT Performance Test Condition EUROVENT 3.50 (0.80 ~ 4.00) Capacity kCal/h 3010 (690 ~ 3440) 3.68 (4.32 ~ 3.33) kCal/hW 3.17 (3.73 ~ 2.87) dB (A) High 42, Low 28, QLo 20 High 48 Noise Level Power level dB...
  • Page 10 ITEM UNIT INDOOR UNIT OUTDOOR UNIT Type Cross-Flow Fan Propeller Fan Material ASG20K1 Motor Type Transistor (8-pole) Induction (6-pole) Input Power — Output Power QLo (Cool/Heat) 730 / 1090 — Lo (Cool/Heat) 920 / 1150 — Fan Speed Me (Cool/Heat) 1175 / 1325 —...

  • Page 11: Cs-E15Hkew Cu-E15Hke

    2.4. CS-E15HKEW CU-E15HKE ITEM UNIT INDOOR UNIT OUTDOOR UNIT Performance Test Condition EUROVENT 4.40 (0.90 ~ 5.00) Capacity BTU/h 15000 (3070 ~ 17100) kCal/h 3780 (770 ~ 4300) 3.21 (4.19 ~ 3.13) BTU/hW 10.9 (14.3 ~ 10.7) dB (A) High 43, Low 32, QLo 29 High 46 Noise Level Power level dB...
  • Page 12 ITEM UNIT INDOOR UNIT OUTDOOR UNIT Type Cross-Flow Fan Propeller Fan Material ASG20K1 Motor Type Transistor (8-pole) Transistor (8-pole) Input Power — — Output Power QLo (Cool/Heat) 850 / 1160 — Lo (Cool/Heat) 990 / 1230 — Fan Speed Me (Cool/Heat) 1245 / 1390 —...

  • Page 13: Outdoor Unit: Cu-2E15Gbe

    2.5. Outdoor Unit: CU-2E15GBE...

  • Page 14: Outdoor Unit: 3E18Ebe

    2.6. Outdoor Unit: 3E18EBE...

  • Page 15: Outdoor Unit: Cu-3E23Cbpg Cu-4E27Cbpg

    2.7. Outdoor Unit: CU-3E23CBPG CU-4E27CBPG...

  • Page 19: Features

    3 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 •...
  • Page 20 • Multi Split Combination Possibility: - A single outdoor unit enables air conditioning of up to two separate rooms for CU-2E15GBE, CU-2E18CBPG. - A single outdoor unit enables air conditioning of up to three separate rooms for CU-3E18EBE, CU-3E23CBPG. - A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E27CBPG.

  • Page 21: Location Of Controls And Components

    4 Location of Controls and Components 4.1. Indoor Unit 4.2. Outdoor Unit 4.3. Remote Control...

  • Page 22: Dimensions

    5 Dimensions 5.1. Indoor Unit...

  • Page 23: Outdoor Unit

    5.2. Outdoor Unit 5.2.1. CU-E7HKE CU-E9HKE CU-E12HKE 5.2.2. CU-E15HKE...

  • Page 24: Refrigeration Cycle Diagram

    6 Refrigeration Cycle Diagram 6.1. CS-E7HKEW CU-E7HKE CS-E9HKEW CU-E9HKE CS-E12HKEW CU-E12HKE Piping size Rated Common Max. Min. Piping Max. Piping Additional Model Length Length Elevation Length Length Refrigerant Liquid (g/m) E7HK, E9HK, E12HK 3/8” 1/4” If piping length is over common length, additional refrigerant should be added as shown in the table.

  • Page 25: Cs-E15Hkew Cu-E15Hke

    6.2. CS-E15HKEW CU-E15HKE Piping size Rated Common Max. Min. Piping Max. Piping Additional Model Length Length Elevation Length Length Refrigerant Liquid (g/m) E15HK 1/2” 1/4” If piping length is over common length, additional refrigerant should be added as shown in the table.

  • Page 26: Block Diagram

    7 Block Diagram 7.1. CS-E7HKEW CU-E7HKE CS-E9HKEW CU-E9HKE CS-E12HKEW CU-E12HKE...

  • Page 27: Cs-E15Hkew Cu-E15Hke

    7.2. CS-E15HKEW CU-E15HKE...

  • Page 28: Wiring Connection Diagram

    8 Wiring Connection Diagram 8.1. Indoor Unit...

  • Page 29: Outdoor Unit

    8.2. Outdoor Unit 8.2.1. CU-E7HKE CU-E9HKE CU-E12HKE...
  • Page 30 8.2.2. CU-E15HKE...

  • Page 31: Electronic Circuit Diagram

    9 Electronic Circuit Diagram 9.1. Indoor Unit...

  • Page 32: Outdoor Unit

    9.2. Outdoor Unit 9.2.1. CU-E7HKE CU-E9HKE CU-E12HKE...
  • Page 33 9.2.2. CU-E15HKE...

  • Page 34: Printed Circuit Board

    10 Printed Circuit Board 10.1. Indoor Unit 10.1.1. Main Printed Circuit Board...
  • Page 35 10.1.2. Power Printed Circuit Board 10.1.3. Indicator Printed Circuit Board 10.1.4. Patrol Printed Circuit Board...

  • Page 36: Outdoor Unit

    10.2. Outdoor Unit 10.2.1. CU-E7HKE CU-E9HKE CU-E12HKE...
  • Page 37 10.2.2. CU-E15HKE...

  • Page 38: Installation Instruction

    11 Installation Instruction 11.1. Select The Best Location 11.2. Indoor/Outdoor Unit INDOOR UNIT Installation Diagram • 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 39: Indoor Unit

    11.3. Indoor Unit 11.3.1. HOW TO FIX INSTALLATION PLATE 11.3.2. TO DRILL A HOLE IN THE WALL INSTALL SLEEVE The mounting wall is strong and solid enough to prevent it from the vibration. PIPING 1. Insert the piping sleeve to the hole. 2.
  • Page 40 3. For the embedded piping (This can be used for left rear piping and left bottom piping also.)
  • Page 41 11.3.4. CONNECT THE CABLE TO THE INDOOR UNIT 1. The inside and outside connecting cable can be connected without removing the front grille. 2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.

  • Page 42: Outdoor Unit

    11.4. Outdoor Unit 11.4.1. INSTALL THE OUTDOOR UNIT • After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram. 1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). 2. When installing at roof, please consider strong wind and earthquake.

  • Page 43: Evacuation Of The Equipment

    11.4.3. 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. 1. 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 44: Pipe Insulation

    4. Cable connection to the power supply through knife switch (Disconnecting means). • Connect the approved polychloroprene sheathed power supply cable (3 x 1.5 mm ), type designation 245 IEC 57 or heavier cord to the terminal board, and connect the other end of the cable to knife switch (Disconnecting means). Note: Knife switch (Disconnecting means) should have minimum 3.5 mm contact gap.

  • Page 45: Operation Control

    12 Operation Control 12.1. Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.

  • Page 46: 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 47: 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 <...

  • Page 48: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)

    2. 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.

  • Page 49: Powerful Mode Operation

    2. When quiet operation is stopped, operation is shifted to normal operation with previous setting. 3. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed. 4. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, expect fan only mode. 5.

  • Page 50: Indication Panel

    12.10. Indication Panel POWER TIMER QUIET POWERFUL e-ion PATROL SENSOR Color Green Orange Orange Orange Blue Blue Light ON Operation ON Quiet Setting ON Quiet Mode ON Powerful Mode ON e-ion ON PATROL ON Light OFF Operation OFF Quiet Setting OFF Quiet Mode OFF Powerful Mode OFF e-ion OFF...
  • Page 51 c. Patrol operation disable • To disable the Patrol Operation during unit start (default) with “OFF/ON” button, press “Patrol” button and hold for 5 seconds, then release. • To disable the Patrol Operation, press “Patrol” button and hold for 15 seconds, then release. C.

  • Page 52: E-Ion Operation

    e. Indicator • When Patrol operation starts, Patrol Sensor indicator ON. • When e-ion operation starts based on dirtiness level, e-ion indicator ON. f. Remote Control Receiving Sound • Normal Operation Patrol Mode Beep • Patrol Mode Stop Long Beep •...
  • Page 53 C. Control Content a. Indoor fan control • During any operation mode combines with e-ion operation, fan speed follows respective operation mode. • During e-ion individual operation - only Auto Fan Speed and no Powerful operation is allowed. Even if Fan Speed button is pressed, no signal is sent to air conditioner, and no change on LCD display.
  • Page 54 Error Reset Method • Press “OFF/ON” button to OFF the operation. • Press AUTO OFF/ON button at indoor unit to OFF the operation. • OFF Timer activates. • Press “e-ion” button during e-ion individual mode. • Power supply reset. iii. e-ion breakdown Judgement Method •...

  • Page 55: Protection Control

    13 Protection Control 13.1. Protection Control For All Operations 13.1.1. 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. •...

  • Page 56: Compressor Tank Temperature Rise Protection Control

    13.1.5. 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 110 C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking.

  • Page 57: Protection Control For Cooling & Soft Dry Operation

    13.1.9. 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 — Indoor intake air ( C) T < 15 or T Outdoor air ( C) T <...

  • Page 58: Protection Control For Heating Operation

    13.2.5. Dew Prevention Control 2 • To prevent dew formation at indoor unit discharge area. • This control starts if all conditions continue for 20 minutes: - Operated with Cooling or Soft Dry Mode. - Indoor intake temperature is between 25 C and 29 C. - Outdoor air temperature is less than 30 C.

  • Page 59: Servicing Mode

    14 Servicing Mode 14.1. Auto OFF/ON Button 1. 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. 2.

  • Page 60: Remote Control Button

    Remote Control Printed Circuit Board Jumper A (J-A) Jumper B (J-B) Remote Control No. Short Open A (Default) Open Open Short Short Open Short • During Remote Control Number Switch Mode, press any button at remote control to transmit and store the transmission code to the EEPROM.

  • Page 61: Troubleshooting Guide

    15 Troubleshooting Guide 15.1. Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table on the right.
  • Page 62 15.1.1. Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Heating Mode Condition of the air Electric current Electric current Low Pressure High Pressure Low Pressure High Pressure conditioner during operating during operating Insufficient refrigerant (gas leakage) Clogged capillary tube or Strainer...

  • Page 63: Breakdown Self Diagnosis Function

    15.2. Breakdown Self Diagnosis Function 15.2.1. Self Diagnosis Function (Three Digits Alphanumeric Code) • Once abnormality has occurred during operation, the unit 7. The breakdown diagnosis mode will be canceled unless will stop its operation, and Timer LED blinks. pressing the CHECK button continuously for 5 seconds or •...

  • Page 64: Error Codes Table

    15.3. Error Codes Table 15.3.1. CU-E7HKE CU-E9HKE CU-E12HKE Diagnosis Abnormality Emergency Primary location to verify Abnormality / Protection control display Judgement operation No abnormality detected — Normal operation Indoor / outdoor abnormal > 1 min after starting Indoor fan operation •...
  • Page 65 15.3.2. CU-E15HKE Diagnosis Abnormality Emergency Abnormality / Protection control Primary location to verify display Judgement operation No abnormality detected — Normal operation — Indoor / outdoor abnormal > 1 min after starting Indoor fan operation • Internal / external cable connections communication operation only...

  • Page 66: Disassembly And Assembly Instructions

    16 Disassembly and Assembly Instructions 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. 16.1. Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.1.1.
  • Page 67 16.1.3. To remove discharge grille...
  • Page 68 16.1.4. To remove control board 16.1.5. To remove cross flow fan and indoor fan motor...

  • Page 70: Outdoor Electronic Controller Removal Procedure

    16.2. Outdoor Electronic Controller Removal Procedure 16.2.1. CU-E7HKE CU-E9HKE CU-E12HKE Caution! When handling electronic controller, be careful of electrostatic discharge. 1. Remove the 3 screws of the Top Panel. 5. Remove the Control Board as follows: Fig. 1 Fig. 4 2.
  • Page 71 16.2.2. CU-E15HKE 1. Remove the 4 screws of the Top Panel. 4. Remove the Control Board. Fig. 4 5. Remove the 8 screws of the Electronic Controller. Fig. 1 2. Remove the 10 screws of the Front Panel. Fig. 5 Fig.

  • Page 72: Technical Data

    17 Technical Data 17.1. Operation Characteristics 17.1.1. CS-E7HKEW CU-E7HKE...
  • Page 76 17.1.2. CS-E9HKEW CU-E9HKE...
  • Page 80 17.1.3. CS-E12HKEW CU-E12HKE...
  • Page 84 17.1.4. CS-E15HKEW CU-E15HKE...

  • Page 88: Sensible Capacity Chart

    17.2. Sensible Capacity Chart CS-E7HKEW CU-E7HKE 230V Outdoor Temp. ( C) Indoor wet bulb temp. 17.0 C 2.03 1.54 0.43 1.90 1.48 0.46 1.77 1.42 0.50 1.61 1.35 0.53 19.0 C 2.05 0.47 19.5 C 2.23 1.61 0.44 2.09 1.55 0.47...

  • Page 89: Exploded View And Replacement Parts List

    18 Exploded View and Replacement Parts List 18.1. Indoor Unit 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 90 REF. PART NAME & DESCRIPTION QTY. CS-E7HKEW CS-E9HKEW CS-E12HKEW CS-E15HKEW REMARKS CHASSY COMPLETE CWD50C1572 FAN MOTOR ARW61G8P30AC CROSS FLOW FAN COMPLETE CWH02C1045 BEARING ASSY CWH64K007 SCREW - CROSS FLOW FAN CWH551146 EVAPORATOR CWB30C2484 CWB30C2386 CWB30C2388 CWB30C2387 FLARE NUT (1/4”) CWT251030 FLARE NUT (3/8”) (1/2”)

  • Page 91: Outdoor Unit

    18.2. Outdoor Unit 18.2.1. CU-E7HKE CU-E9HKE CU-E12HKE 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 92 REF. NO. PART NAME & DESCRIPTION QTY. CU-E7HKE CU-E9HKE CU-E12HKE REMARKS CHASSY ASS’Y CWD50K2073 SOUND PROOF MATERIAL CWG302447 — — FAN MOTOR BRACKET CWD541030 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951536 CWA951553 CWA951542 SCREW - FAN MOTOR MOUNT CWH55252J PROPELLER FAN ASS’Y CWH03K1010...
  • Page 93 18.2.2. CU-E15HKE 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 94 REF. NO. DESCRIPTION & NAME QTY. CU-E15HKE REMARKS CHASSY ASS’Y CWD50K2085 ANTI-VIBRATION BUSHING CWH50077 COMPRESSOR 5CS130XAD04 NUT-COMPRESSOR MOUNT CWH56000J SOUND PROOF MATERIAL CWG302302 FAN MOTOR BRACKET CWD541084 FAN MOTOR CWA981166J SCREW - FAN MOTOR BRACKET CWH551198 SCREW - FAN MOTOR MOUNT CWH551217 PROPELLER FAN ASSY CWH03K1016...

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