Page 1: Air Conditioner
Please file and use this manual together with the service manual for Model No. CU-2E18CBPG, CU-3E23CBPG, CU- 4E27CBPG, Order No. RAC0209005C2, Model No. CU-3E18EBE, Order No. RAC0602011C2 and Model No. CU-2E15GBE, Order No. MAC0704001A2. © Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010. Unauthorized copying and distribution is a violation of law.
Page 2: Table Of Contents
TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions -----------------------------------------------3 13.9. Mild Dry Cooling Operation --------------------------- 81 2 Specifications ------------------------------------------------------5 14 Protection Control---------------------------------------------- 82 3 Features ------------------------------------------------------------ 27 14.1. Protection Control For All Operations -------------- 82 4 Location of Controls and Components------------------ 28 14.2.
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. •...
Page 4 18. For R410A models, when connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A materials.
Page 5: Specifications
2 Specifications MODEL INDOOR CS-E7LKEW, CS-XE7LKEW CS-E9LKEW, CS-XE9LKEW OUTDOOR CU-E7LKE CU-E9LKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.70 2.05 2.40 0.80 2.50 3.00 Capacity BTU/h 2390 6990...
Page 6 MODEL INDOOR CS-E7LKEW, CS-XE7LKEW CS-E9LKEW, CS-XE9LKEW OUTDOOR CU-E7LKE CU-E9LKE Type Propeller Fan Propeller Fan Material Motor Type Induction (6-poles) Induction (6-poles) Input Power Output Power Speed Moisture Removal L/h (Pt/h) 1.3 (2.7) 1.5 (3.2) Cool 5.6 (198) 4.9 (173) /min (ft...
Page 7 MODEL INDOOR CS-E7LKEW, CS-XE7LKEW CS-E9LKEW, CS-XE9LKEW OUTDOOR CU-E7LKE CU-E9LKE Dry Bulb Wet Bulb Dry Bulb Wet Bulb Cooling Maximum Minimum Indoor Operation Range Heating Maximum — — Minimum — — Cooling Maximum Minimum Outdoor Operation Range Heating Maximum Minimum 1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)
Page 8 MODEL INDOOR CS-E12LKEW, CS-XE12LKEW CS-E15LKEW, CS-XE15LKEW OUTDOOR CU-E12LKE CU-E15LKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.80 3.50 4.00 0.80 4.20 5.00 Capacity BTU/h 2730 11900 13600 2730 14300 17100 Kcal/h...
Page 9 MODEL INDOOR CS-E12LKEW, CS-XE12LKEW CS-E15LKEW, CS-XE15LKEW OUTDOOR CU-E12LKE CU-E15LKE Type Propeller Fan Propeller Fan Material Motor Type DC Motor (8-poles) Induction (6-poles) Input Power — Output Power Speed Moisture Removal L/h (Pt/h) 2.0 (4.2) 2.4 (5.1) Cool 4.9 (173) 6.0 (212) /min (ft /min) Heat...
Page 10 MODEL INDOOR CS-E12LKEW, CS-XE12LKEW CS-E15LKEW, CS-XE15LKEW OUTDOOR CU-E12LKE CU-E15LKE Dry Bulb Wet Bulb Dry Bulb Wet Bulb Cooling Maximum Minimum Indoor Operation Range Heating Maximum — — Minimum — — Cooling Maximum Minimum Outdoor Operation Range Heating Maximum Minimum 1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb) 2.
Page 11 MODEL INDOOR CS-E7LKEW, CS-XE7LKEW CS-E9LKEW, CS-XE9LKEW OUTDOOR CU-E7LKE-3 CU-E9LKE-3 Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.70 2.05 2.40 0.80 2.50 3.00 Capacity BTU/h 2390 6990 8180 2730...
Page 12 MODEL INDOOR CS-E7LKEW, CS-XE7LKEW CS-E9LKEW, CS-XE9LKEW OUTDOOR CU-E7LKE-3 CU-E9LKE-3 Type Propeller Fan Propeller Fan Material Motor Type Induction (6-poles) Induction (6-poles) Input Power Output Power Speed Moisture Removal L/h (Pt/h) 1.3 (2.7) 1.5 (3.2) Cool 5.6 (198) 4.9 (173) /min (ft...
Page 13 MODEL INDOOR CS-E7LKEW, CS-XE7LKEW CS-E9LKEW, CS-XE9LKEW OUTDOOR CU-E7LKE-3 CU-E9LKE-3 Dry Bulb Wet Bulb Dry Bulb Wet Bulb Cooling Maximum Minimum Indoor Operation Range Heating Maximum — — Minimum — — Cooling Maximum Minimum Outdoor Operation Range Heating Maximum Minimum 1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb)
Page 14 MODEL INDOOR CS-E12LKEW, CS-XE12LKEW OUTDOOR CU-E12LKE-3 Performance Test Condition EUROVENT Phase, Hz Single, 50 Power Supply Min. Mid. Max. 0.80 3.50 4.00 Capacity BTU/h 2730 11900 13600 Kcal/h 3010 3440 Running Current — — Input Power 1.18k Annual Consumption — —...
Page 15 MODEL INDOOR CS-E12LKEW, CS-XE12LKEW OUTDOOR CU-E12LKE-3 Type Propeller Fan Material Motor Type Induction (6-poles) Input Power Output Power Speed Moisture Removal L/h (Pt/h) 2.0 (4.2) Cool 4.9 (173) /min (ft /min) Heat 5.3 (187) /min (ft /min) Cool 7.2 (254) /min (ft /min) Heat...
Page 16 MODEL INDOOR CS-E12LKEW, CS-XE12LKEW OUTDOOR CU-E12LKE-3 Dry Bulb Wet Bulb Cooling Maximum Minimum Indoor Operation Range Heating Maximum — Minimum — Cooling Maximum Minimum Outdoor Operation Range Heating Maximum Minimum 1. Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air temperature of 35°C Dry Bulb (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb) 2.
Page 17 MODEL INDOOR CS-E18LKEW, CS-XE18LKEW CS-E21LKEW, CS-XE21LKEW OUTDOOR CU-E18LKE CU-E21LKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.90 5.00 6.00 0.90 6.30 7.10 Capacity BTU/h 3070 17100 20500 3070 21500 24200 Kcal/h...
Page 18 MODEL INDOOR CS-E18LKEW, CS-XE18LKEW CS-E21LKEW, CS-XE21LKEW OUTDOOR CU-E18LKE CU-E21LKE Type Propeller Fan Propeller Fan Material Motor Type PWM (8-poles) PWM (8-poles) Input Power 74.8 74.8 Output Power Cool Speed Heat Moisture Removal L/h (Pt/h) 2.8 (5.9) 3.5 (7.4) Cool 12.00 (424) 12.00 (424) /min (ft /min)
Page 19 MODEL INDOOR CS-E18LKEW, CS-XE18LKEW CS-E21LKEW, CS-XE21LKEW OUTDOOR CU-E18LKE CU-E21LKE Protection Device Electronic Control Electronic Control Dry Bulb Wet Bulb Dry Bulb Wet Bulb Cooling Maximum Minimum Indoor Operation Range Heating Maximum — — Minimum — — Cooling Maximum Minimum Outdoor Operation Range Heating Maximum Minimum...
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 27: 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 28: Location Of Controls And Components
4 Location of Controls and Components 4.1. Indoor Unit 4.2. Outdoor Unit...
Page 29: Remote Control
4.3. Remote Control 4.3.1. CS-E7LK CS-E9LK CS-E12LK CS-E15LK CS-XE7LK CS-XE9LK CS-XE12LK CS-XE15LK 4.3.2. CS-E18LK CS-E21LK CS-XE18LK CS-XE21LK...
Page 30: Dimensions
5 Dimensions 5.1. Indoor Unit 5.1.1. CS-E7LK CS-E9LK CS-E12LK CS-E15LK CS-XE7LK CS-XE9LK CS-XE12LK CS-XE15LK...
Page 31 5.1.2. CS-E18LK CS-E21LK CS-XE18LK CS-XE21LK...
Page 32: Outdoor Unit
5.2. Outdoor Unit 5.2.1. CU-E7LKE CU-E9LKE CU-E12LKE CU-E15LKE CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3 5.2.2. CU-E18LKE CU-E21LKE...
Page 33: Refrigeration Cycle Diagram
6 Refrigeration Cycle Diagram 6.1. CU-E7LKE CU-E9LKE CU-E12LKE CU-E15LKE...
Page 34: Cu-E7Lke-3 Cu-E9Lke-3 Cu-E12Lke-3
6.2. CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3...
Page 35: Cu-E18Lke Cu-E21Lke
6.3. CU-E18LKE CU-E21LKE...
Page 36: Block Diagram
7 Block Diagram 7.1. CU-E7LKE CU-E9LKE CU-E15LKE...
Page 37: Cu-E12Lke
7.2. CU-E12LKE...
Page 38: Cu-E7Lke-3 Cu-E9Lke-3 Cu-E12Lke-3
7.3. CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3...
Page 39: Cu-E18Lke Cu-E21Lke
7.4. CU-E18LKE CU-E21LKE...
Page 40: Wiring Connection Diagram
8 Wiring Connection Diagram 8.1. Indoor Unit 8.1.1. CS-E7LK CS-E9LK CS-E12LK CS-E15LK CS-XE7LK CS-XE9LK CS-XE12LK CS-XE15LK...
Page 41 8.1.2. CS-E18LK CS-E21LK CS-XE18LK CS-XE21LK...
Page 42: Outdoor Unit
8.2. Outdoor Unit 8.2.1. CU-E7LKE CU-E9LKE CU-E15LKE...
Page 43 8.2.2. CU-E12LKE...
Page 44 8.2.3. CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3...
Page 45 8.2.4. CU-E18LKE CU-E21LKE...
Page 46: Electronic Circuit Diagram
9 Electronic Circuit Diagram 9.1. Indoor Unit 9.1.1. CS-E7LK CS-E9LK CS-E12LK CS-E15LK CS-XE7LK CS-XE9LK CS-XE12LK CS-XE15LK...
Page 47 9.1.2. CS-E18LK CS-E21LK CS-XE18LK CS-XE21LK...
Page 48: Outdoor Unit
9.2. Outdoor Unit 9.2.1. CU-E7LKE CU-E9LKE CU-E15LKE...
Page 49 9.2.2. CU-E12LKE...
Page 50 9.2.3. CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3...
Page 51 9.2.4. CU-E18LKE CU-E21LKE...
Page 52: Printed Circuit Board
10 Printed Circuit Board 10.1. Indoor Unit 10.1.1. Main Printed Circuit Board...
Page 53 10.1.2. Power Printed Circuit Board 10.1.3. Indicator Printed Circuit Board...
Page 54 10.1.4. Receiver Printed Circuit Board 10.1.5. High Voltage Power Supply Printed Circuit Board 10.1.6. Comparator Printed Circuit Board 10.1.7. Eco Patrol Printed Circuit Board...
Page 55: Outdoor Unit
10.2. Outdoor Unit 10.2.1. CU-E7LKE CU-E9LKE CU-E12LKE CU-E15LKE CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3...
Page 57 10.2.2. CU-E18LKE CU-E21LKE...
Page 58: 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 59: 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 Install The mounting wall is strong and solid enough to prevent it from a Sleeve of Piping the vibration. 1. Insert the piping sleeve to the hole. 2.
Page 60 1. For the right rear piping 2. For the right and right bottom piping 3. For the embedded piping (This can be used for left rear piping and bottom piping also.)
Page 61: Connect The Cable To The Indoor Unit
11.2.4. 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 x 1.5 mm flexible cord, type designation 245 IEC 57 or heavier cord.
Page 62: 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. 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. Please fasten the installation stand firmly with bolt or nails.
Page 63: 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. 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 64: Pipe Insulation
5. Secure the power supply cord and connecting cable onto the control board with the holder. 6. Attach the control board cover back to the original position with screw. 7. For wire stripping and connection requirement, refer to instruction of indoor unit. This equipment must be properly earthed.
Page 65: 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 66: Indoor Fan Motor Operation
12.1.5. Automatic Operation • This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature. • During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.
Page 67: 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 68 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 69: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)
12.5. Quiet operation (Cooling Mode/Cooling area of Dry Mode) A. Purpose To provide quiet cooling operation compare to normal operation. B. Control condition a. Quiet operation start condition • When “Quiet” button at remote control is pressed. Quiet LED illuminates. b.
Page 70: Powerful Mode Operation
12.7. Powerful Mode Operation • When the powerful mode is selected, the internal setting temperature will shift lower up to 2°C (for Cooling/Soft Dry) or higher up to 3.5°C (for Heating) than remote control setting temperature for 20 minutes to achieve the setting temperature quickly. 12.8.
Page 71: Patrol Operation
12.11. Patrol Operation • To monitor air dirtiness level by using Patrol sensor and to maintain air freshness by activates e-ion operation • Patrol operation starts condition - When the unit operation is started with “OFF/ON” button. - When the unit stops, “Patrol” operation is selected, Patrol individual operation will start. - During cooling only operation, “Patrol”...
Page 72 • Patrol Sensor Control - First 2 minutes from Patrol function activates is stabilization time, during stabilization time, no air dirtiness level is monitored. The Air Dirtiness level is set to Clean. - After that, Patrol sensor starts to record the resistance value at fixed interval. Higher resistance value indicates cleaner air. - The air dirtiness level is monitored by comparing the current resistance value with maximum resistance value from time to time to get the Air Dirtiness Value.
Page 73: E-Ion Operation
• Indicator - When patrol is selected, patrol sensor indicator ON. Description BLUE E-ION When patrol is selected function is not selected During gas sensor error detection control During stop 2 minutes gas sensor initial stabilization time (Level 0) During operation a.
Page 74 Auto Fan Speed for e-ion operation switches between HLo and CLo at pattern below: b. Airflow direction control • During any operation mode combines with e-ion operation, airflow direction follows respective operation mode. • During e-ion individual operation, only Auto Air Swing is allowed. Even if Air Swing button is pressed, no signal is sent to air conditioner, and no change on LCD display.
Page 75: Mild Dry Cooling Operation
f. Power failure • During e-ion individual operation, if power failure occurs, after power resumes, e-ion individual operation resumes immediately. • During combination operation, if power failure occurs, after power resumes, combination operation resume immediately. g. Error Detection Control When e-ion indicator blink, it indicates error listed below: i.
Page 76: Eco Patrol Operation
12.14. ECO Patrol 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: •...
Page 77 • ECO Patrol Demo Mode - Press “Set” button continuously for 15 seconds by using pointer during Air Conditioner is OFF condition to enter internal setting mode. - Press “Timer Decrement” button to select “EC demo”. - Press “Timer Set” button to toggle ECO Patrol Demo mode. - Short “beep”: Turn ON ECO Patrol Demo mode.
Page 78 • Other Information - ECO Patrol, Powerful, Quiet and Mild Dry Cooling cannot be operated at the same time. - ECO Patrol sensor initialized time is 70 seconds from power supplied to ECO Patrol sensor, or 70 seconds from the operation start.
Page 79 • Purpose is to improve sensor serviceability when sensor is malfunction. 1. Control starting condition When all of the conditions are formed • Not in ECO Patrol Demo mode. • ECO Patrol mode ON. • When ECO Patrol sensor check mode signal is received; the procedure of selection is as shown: - Press “Set”...
Page 80: 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 81: Indoor Fan Motor Operation
13.5. Indoor Fan Motor Operation 13.5.1. Residual Heat Removal Control • To prevent high pressure at indoor unit, when heating mode thermostat-off condition or power supply OFF, indoor fan continue to operate at controlled fan speed for maximum 30 seconds then stop. 13.6.
Page 82: 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. •...
Page 83 14.1.5. 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 107°C (E7 ~ 15LK) and 112°C (E18 ~ 21LK), compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking.
Page 84: 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. •...
Page 85: Protection Control For Heating Operation
14.2.6. 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 86 14.3.4. Low Temperature Compressor Oil Return Control (E7 ~ 15LK) • In heating operation, if the outdoor temperature falls below -10°C 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. 14.3.6.
Page 87: Servicing Mode
15 Servicing Mode 15.1. 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 88: Remote Control Button
4. 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 89: Troubleshooting Guide
16 Troubleshooting Guide 16.1. 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 90 16.1.1. 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 91: Breakdown Self Diagnosis Function
16.2. Breakdown Self Diagnosis Function 16.2.1. 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 92: Error Codes Table
16.3. Error Codes Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgement operation No memory of failure — Normal operation — — Indoor/outdoor After operation for Indoor fan only Indoor/outdoor • Indoor/outdoor wire terminal abnormal 1 minute operation can communication not establish •...
Page 93 Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgement operation Abnormal indoor 3 times happen — Wrong wiring and connecting • Check indoor/outdoor connection operating unit or within 40 minutes pipe, expansion valve wire and connection pipe standby units abnormality, indoor heat •...
Page 94: 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. •...
Page 95 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. •...
Page 96 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. •...
Page 97 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. •...
Page 98 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 •...
Page 99 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 •...
Page 100 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. •...
Page 101 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 102 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. •...
Page 103 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. •...
Page 104 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 sen- sor are used to determine sensor errors. Malfunction Caused • Faulty connector connection. •...
Page 105 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. •...
Page 106 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 107 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. •...
Page 108 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. •...
Page 109 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. •...
Page 110 16.4.17. H58 (Patrol Sensor Abnormality) Malfunction Decision Conditions • If Patrol sensor feedback is 0V or 5V continuous for 6 hours. • Error will display only when the Patrol operation is ON. Malfunction Caused • Faulty connector connection. • Faulty Patrol sensor. Troubleshooting...
Page 111 16.4.18. 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. •...
Page 112 16.4.19. 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 •...
Page 113: H99 (Indoor Freeze Prevention Protection: Cooling Or Soft Dry)
16.4.20. 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 •...
Page 114 16.4.21. 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 •...
Page 115 16.4.22. 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 116 16.4.23. 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. •...
Page 117 16.4.24. 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 •...
Page 118 16.4.25. 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 119 16.4.26. 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 outdoor unit •...
Page 120 16.4.27. 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. •...
Page 121 16.4.28. 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 •...
Page 122 16.4.29. 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 transforme r (CT) with the compressor running. Malfunction Caused •...
Page 123 16.4.30. 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 •...
Page 124: Disassembly And Assembly Instructions
17 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. 17.1. CS-E7LK CS-E9LK CS-E12LK CS-E15LK 17.1.1.
Page 125 17.1.1.3. To remove power electronic controller 17.1.1.4. To remove discharge grille...
Page 126 17.1.1.5. To remove control board 17.1.1.6. To remove cross flow fan and indoor fan motor...
Page 128: Cs-E18Lk Cs-E21Lk
17.2. CS-E18LK CS-E21LK 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 129 17.2.1.3. To remove power electronic controller...
Page 130 17.2.1.4. To remove discharge grille 17.2.1.5. To remove control board...
Page 131 17.2.1.6. To remove cross flow fan and indoor fan motor...
Page 133: Outdoor Electronic Controller Removal Procedure
17.3. Outdoor Electronic Controller Removal Procedure 17.3.1. CU-E7LKE CU-E9LKE CU-E12LKE CU-E15LKE CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3 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.
Page 134 17.3.2. CU-E18LKE CU-E21LKE 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 135: Technical Data
18 Technical Data 18.1. Operation Characteristics 18.1.1. CU-E7LKE...
Page 139 18.1.2. CU-E9LKE...
Page 143 18.1.3. CU-E12LKE...
Page 147 18.1.4. CU-E15LKE...
Page 151 18.1.5. CU-E7LKE-3...
Page 155 18.1.6. CU-E9LKE-3...
Page 159 18.1.7. CU-E12LKE-3...
Page 163 18.1.8. CU-E18LKE Cooling Characteristic at Different Outdoor Air Temperature...
Page 164 Cooling Characteristic at Different Piping Length...
Page 165 Heating Characteristic at Different Outdoor Air Temperature...
Page 166 Heating Characteristic at Different Piping Length...
Page 167 18.1.9. CU-E21LKE Cooling Characteristic at Different Outdoor Air Temperature...
Page 168 Cooling Characteristic at Different Piping Length...
Page 169 Heating Characteristic at Different Outdoor Air Temperature...
Page 170 Heating Characteristic at Different Piping Length...
Page 171: Sensible Capacity Chart
18.2. Sensible Capacity Chart O CU-E7LKE CU-E7LKE-3 230V Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 2.03 1.54 0.43 1.90 1.48 0.46 1.77 1.42 0.50 1.61 1.35 0.53 19.0°C 2.05 0.47 19.5°C 2.23 1.61 0.44 2.09 1.55 0.47 1.94 1.49 0.50 1.77 1.42...
Page 172 O CU-E18LKE 230V Outdoor Temp. (°C) Indoor wet bulb temp. 17.0°C 4.96 3.76 1.35 4.64 3.61 1.45 4.31 3.47 1.55 3.92 3.29 1.67 19.0°C 5.00 1.47 19.5°C 5.45 3.94 1.37 5.09 3.78 1.48 4.74 3.64 1.58 4.31 3.47 1.70 22.0°C 5.94 4.08 1.40...
Page 173: Exploded View And Replacement Parts List
19 Exploded View and Replacement Parts List 19.1. Indoor Unit 19.1.1. CS-E7LKEW CS-E9LKEW CS-E12LKEW CS-E15LKEW CS-XE7LKEW CS-XE9LKEW CS-XE12LKEW CS-XE15LKEW 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 174 REF. PART NAME & DESCRIPTION QTY. CS-E7LKEW CS-E9LKEW CS-E12LKEW CS-E15LKEW REMARKS ← ← ← CHASSY COMPLETE CWD50C1653 ← ← ← FAN MOTOR L6CBYYYL0037 ← ← ← CROSS FLOW FAN COMPLETE CWH02C1076 ← ← ← BEARING ASSY CWH64K007 ← ← ←...
Page 175 REF. PART NAME & DESCRIPTION QTY. CS-E7LKEW CS-E9LKEW CS-E12LKEW CS-E15LKEW REMARKS ← ← ← 57 ELECTRONIC CONTROLLER - ECO PATROL CWA745791 ← ← ← 58 COVER FOR PCB ECO (UPPER) CWD933192 ← ← ← 59 COVER FOR PCB ECO (BOTTOM) CWD933193 ←...
Page 176 REF. PART NAME & DESCRIPTION QTY. CS-XE7LKEW CS-XE9LKEW CS-XE12LKEW CS-XE15LKEW REMARKS ← ← ← CHASSY COMPLETE CWD50C1605 ← ← ← FAN MOTOR L6CBYYYL0037 ← ← ← CROSS FLOW FAN COMPLETE CWH02C1076 ← ← ← BEARING ASSY CWH64K007 ← ← ← SCREW - CROSS FLOW FAN CWH551146 EVAPORATOR CO.
Page 177 REF. PART NAME & DESCRIPTION QTY. CS-XE7LKEW CS-XE9LKEW CS-XE12LKEW CS-XE15LKEW REMARKS ← ← ← 57 ELECTRONIC CONTROLLER - ECO PATROL CWA745791 ← ← ← 58 COVER FOR PCB ECO (UPPER) CWD933192 ← ← ← 59 COVER FOR PCB ECO (BOTTOM) CWD933193 ←...
Page 178 19.1.2. CS-E18LKEW CS-E21LKEW CS-XE18LKEW CS-XE21LKEW 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 179 PART NAME & DESCRIPTION QTY. CS-E18LKEW CS-E21LKEW CS-XE18LKEW CS-XE21LKEW REMARKS ← ← CHASSY COMPLETE CWD50C1654 CWD50C1604 ← ← ← FAN MOTOR L6CBYYYL0039 ← ← ← CROSS FLOW FAN COMPLETE CWH02C1077 ← ← ← BEARING ASS’Y CWH64K007 ← ← ← SCREW - CROSS FLOW FAN CWH551146 ←...
Page 180 PART NAME & DESCRIPTION QTY. CS-E18LKEW CS-E21LKEW CS-XE18LKEW CS-XE21LKEW REMARKS ← ← ← 56 ELECTRONIC CONTROLLER - COMPARATOR CWA745790 ← ← ← 57 ELECTRONIC CONTROLLER - ECO PATROL CWA745791 ← ← ← 58 COVER FOR PCB ECO (UPPER) CWD933192 ← ←...
Page 181: Outdoor Unit
19.2. Outdoor Unit 19.2.1. CU-E7LKE CU-E9LKE CU-E12LKE CU-E15LKE CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
Page 182 REF. NO. PART NAME & DESCRIPTION QTY. CU-E7LKE CU-E9LKE CU-E12LKE CU-E15LKE REMARKS Y ’ SOUND PROOF MATERIAL CWG302447 — CWG302570 — FAN MOTOR BRACKET CWD541089 SCREW - FAN MOTOR BRACKET CWH551217 SCREW - FAN MOTOR MOUNT CWH55252J PROPELLER FAN ASS’Y CWH03K1010 CWH03K1014 CWH03K1010...
Page 183 REF. NO. PART NAME & DESCRIPTION QTY. CU-E7LKE-3 CU-E9LKE-3 CU-E12LKE-3 REMARKS ← ← CHASSY ASS’Y CWD50K2073 ← ← SOUND PROOF MATERIAL CWG302314 ← ← FAN MOTOR BRACKET CWD541089 ← ← SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR CWA951553 CWA951542 ←...
Page 184 19.2.2. CU-E18LKE CU-E21LKE 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 185 REF. NO. DESCRIPTION & NAME QTY. CU-E18LKE CU-E21LKE REMARKS Y ’ ← ← ← ← ← ← ← ← ← ← ← Y ’ ← ← ← ← ← ← ← ← ← SENSOR COMPLETE (COMP. TOP) CWA50C2185 ← ← V-COIL COMPLETE (4 - WAYS VALVE) CWA43C2168J ←...

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Cu-e7lke Cu-e9lke-3 Cu-e7lke-3 Cs-e12lkew Cu-e12lke Cu-e12lke-3 ... Show all

Panasonic CS-E7LKEW Service Manual

1 Safety Precautions

2 Specifications

3 Features

4 Location of Controls and Components

5 Dimensions

6 Refrigeration Cycle Diagram

7 Block Diagram

8 Wiring Connection Diagram

9 Electronic Circuit Diagram

10 Printed Circuit Board

11 Installation Instruction

12 Operation and Control

13 Operation Control (for Multi Split Connection)

16 Troubleshooting Guide

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Summary of Contents for Panasonic CS-E7LKEW

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