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Please file and use this manual together with the service manual for Model No. CS-ME5RKUA CS-ME7RKUA, CS-E9RKUA
CS-E12RKUA, CS-ME9SB4U, CS-E12RB4UW, CS-ME5SD3UA CS-ME7SD3UA, CS-E9SD3UAW CS-E12SD3UAW, Order No.
PAPAMY1503085CE, PAPAMY1501049CE, PAPAMY1604059CE, PAPAMY1503095CE, PAPAMY1604056CE,
PAPAMY1604052CE.
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.
Outdoor Unit
CU-2E18SBU
WARNING
PRECAUTION OF LOW TEMPERATURE
Order No: PAPAMY1604017CE
© Panasonic Corporation 2016
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Summary of Contents for Panasonic PAPAMY1604017CE
- Page 1 Order No: PAPAMY1604017CE Outdoor Unit CU-2E18SBU Please file and use this manual together with the service manual for Model No. CS-ME5RKUA CS-ME7RKUA, CS-E9RKUA CS-E12RKUA, CS-ME9SB4U, CS-E12RB4UW, CS-ME5SD3UA CS-ME7SD3UA, CS-E9SD3UAW CS-E12SD3UAW, Order No. PAPAMY1503085CE, PAPAMY1501049CE, PAPAMY1604059CE, PAPAMY1503095CE, PAPAMY1604056CE, PAPAMY1604052CE. WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public.
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Page 2: Table Of Contents
TABLE OF CONTENTS PAGE PAGE Safety Precautions ..........3 13.16 Compressor Discharge High Pressure Protection Control ........27 Specifications ............. 5 Servicing Mode ..........28 CU-2E18SBU ..........5 14.1 CU-2E18SBU ..........28 ... -
Page 3: Safety Precautions
1. Safety Precautions Read the following “SAFETY PRECAUTIONS” carefully before installation. Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be installed. ... - Page 4 During installation, install the refrigerant piping properly before running 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. During pump down operation, stop the compressor before removing the refrigeration piping.
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Page 5: Specifications
2. Specifications CU-2E18SBU Item Unit OUTDOOR UNIT Indoor Unit Combination 2.5kW + 2.5kW 1 Phase, 208 – 230V, 60Hz (Power supply from Power Source outdoor unit) 4.89 (2.10 ~ 5.86) Capacity BTU/h 16700 (7200 ~ 20000) Running Current 6.6 - 6.0 Power Input 1.33 (0.36 ~ 1.69) Electrical... - Page 6 Item Unit OUTDOOR UNIT Air Volume High /min (ft /min) 41.0 (1447) Refrigerant Control Device Expansion Valve Refrigerant Oil FV50S (900) Refrigerant (R410A) g (oz) 2.23k (78.7) Dry Bulb Wet Bulb Maximum °C (°F) 32 (89.6) 23 (73.4) Cooling Minimum °C (°F) 16 (60.8) 11 (51.8)
- Page 7 Indoor unit Cooling Capacity (kW) Input Power (W) Moisture capacity Current, Total SEER Removal 230V (A) Room Room Volume (l/h) Cooling Total min ～ max Rating min ～ max 1.6 + 1.6 1.620 1.620 3.24 2.10 ～ 3.89 360 ～ 960 4.20 19.00 0.3 + 0.3...
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Page 8: Dimensions
3. Dimensions <Top View> Space necessary for installation (5-5/32) 1-3/32 24-1/8 5-5/32 3-3/4 3-7/8 3-7/8 39-3/38 Anchor Bolt Pitch 14-13/64 x 24-1/8 <Side View> <Front View> <Side View> 34-15/32 2-5/16 12-5/8 1-21/32 15/16 Unit: inch 2-1/2... -
Page 9: Refrigeration Cycle Diagram
4. Refrigeration Cycle Diagram INDOOR A OUTDOOR PIPE EXPANSION TEMP. STRAINER VALVE A SENSOR LIQUID SIDE 3-WAY VALVE INTAKE TEMP. SENSOR PIPE PIPE TEMP. TEMP. SENSOR SENSOR LIQUID SIDE 3-WAY VALVE EXPANSION STRAINER GAS SIDE HEAT VALVE B EXCHANGER 3-WAY VALVE (EVAPORATOR) 3-WAY VALVE STRAINER... -
Page 10: Block Diagram
5. Block Diagram... -
Page 11: Wiring Connection Diagram
6. Wiring Connection Diagram... -
Page 12: Electronic Circuit Diagram
7. Electronic Circuit Diagram... -
Page 13: Printed Circuit Board
8. Printed Circuit Board Main Printed Circuit Board CN-HT CN-HOT CN-DATA CN-EV1 CN-TH1 CN-EV2 CN-DIS CN-TH3 CN-TH2 CN-TH4 CN-PSW1 CN-FM1... -
Page 14: Noise Filter Printed Circuit Board
Noise Filter Printed Circuit Board CN-COM CN-DATA CN-WHT CN-BLK Display Printed Circuit Board CN-DISP1 CN-NMODE1 CN-NMODE2 LED1 LED2 LED3 LED4 LED5 LED6... -
Page 15: Installation Information
9. Installation Information Check Points 49.2 ft max. 82 ft 82 ft Total maximum pipe length: 164 ft QUICK GUIDE PIPING AND ELECTRICAL SPECIFICATION Min. Min. total Piping size Indoor (ID) & Max. Addi- pipe pipe Power Outdoor (OD) Standard Max. -
Page 16: Installation Instruction
10. Installation Instruction IMPORTANT ® This product has been designed and manufactured to meet ENERGY STAR criteria for energy efficiency when matched with appropriate coil components. However, proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency. Installation of this product should follow the manufacturer’s refrigerant charging and air flow instructions. -
Page 17: Select The Best Location
10.3 Select the Best Location 10.3.1 Outdoor Unit Installation parts you should purchase ( ) Outdoor Unit Installation Diagram If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from It is advisable to avoid more the condenser is not obstructed. -
Page 18: Install The Outdoor Unit
Outdoor Unit Installation Guidelines Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation guidelines below. For any of the below installation patterns, the wall height on the exhaust side should be 47 1/4" (1200 mm) or less. -
Page 19: Evacuation Of The Equipment
10.6 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 Outdoor unit the Low side of a charging set and the service Tube connector Indoor Unit port of the gas side 3-way valve. -
Page 20: Connect The Cable To The Outdoor Unit
10.7 Connect the Cable to the Outdoor Unit Remove Control Board Cover (Metal) by Top Panel loosening 2 screws. Remove Valve Cover (Metal) by loosening 2 screws. Screws Control Board Cover (Metal) Remove Plugs. Fix the conduit connectors to the knock out holes with lock-nuts, then secure them. -
Page 21: Operation Control
11. Operation Control 11.1 Cooling Operation 11.1.1 Outdoor fan control When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below: RPM free 59°F 55.4°F RPM controlled 8.6°F Stopped OD temp. 11.1.2 Annual Cooling control ... -
Page 22: Heating Operation
11.2 Heating Operation 11.2.1 Outdoor fan control When heating operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below: RPM controlled 57.2°F 53.6°F RPM free OD temp. To improve the judgment accuracy, indoor room temperature sampling starts when any indoor unit has stopped capability supplied (heating thermo-off) during heating operation with compressor ON, outdoor unit will send signal to all thermo-off indoor units to ON fan motor and get room temperature sample. -
Page 23: Simultaneous Operation Control
12. Simultaneous Operation Control Operation modes which can be selected using the remote control unit: Automatic, Cooling, Soft Dry, Heating, e-ion operation mode. Types of operations modes which can be performed simultaneously Cooling operation and cooling, Soft Dry or e-ion operation Heating operation and heating operation Types of operation modes which cannot be performed simultaneously... -
Page 24: Protection Control
13. Protection Control 13.1 Freeze Prevention Control (Cool) When received freeze prevention signal from indoor unit, the compressor frequency changes according to indoor heat exchanger temperature. When indoor unit request capability OFF due to freeze condition , immediately the capability supply to targeted indoor unit stops. -
Page 25: Cooling Overload Control (Cool)
13.5 Cooling Overload Control (Cool) This control detect outdoor pipe temperature and perform the compressor frequency restriction during cooling operation. Comp stop 147.2°F Comp freq restricted 140°F 134.6°C Comp freq free OD Pipe temp 13.6 Heating Overload Control (Heat) ... -
Page 26: Deice Control
13.8 Deice Control When outdoor pipe temperature and outdoor air temperature is low, deice operation starts where indoor fan motor and outdoor fan motor stop, indoor unit horizontal vane close and operation LED blink with compressor ON. 13.9 Time Delay Safety Control (Restart Control) ... -
Page 27: Protection Control
13.13 Compressor Protection Control (Gas leak detection control 1) Control start conditions For 5 minutes, the compressor continuously operates and total current is low. During Cooling or Soft Dry operation: Indoor intake temperature — indoor piping temperature is below 39.2°F. During Heating operation: Indoor pipe temperature —... -
Page 28: Servicing Mode
14. Servicing Mode 14.1 CU-2E18SBU Fig. 1 JP1 (COOL LED 1 ONLY) SW1 (PUMP DOWN) LED 2 OFF ON SW2 (OPERATION LED 3 TEST) LED 4 OFF ON SW3 (WIRING CHECK) LED 5 LED 6 L1 L2 14.1.1 Pump down operation (SW1) ... - Page 29 14.1.3 Wiring Error check The unit capable to correct the wiring error automatically by following procedures. Confirm the valve on the liquid side and gas side is open. Press WIRING CHECK button (SW3) on the Service PCB inside the outdoor unit for more than 10 seconds to start wiring check operation.
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Page 30: Troubleshooting Guide
15. Troubleshooting Guide 15.1 Self Diagnosis Function The display screen of wireless remote control unit and the self-diagnosis LEDs (green) on the outdoor printed circuit board in the outdoor unit can be used to identify the location of the problem. Refer to the table below to identify and solve the cause of the problem, and then re-start the air conditioner system. - Page 31 Abnormality Diagnosis Abnormality Protection LED 6 LED 5 LED 4 LED 3 LED 2 LED 1 Problem Check location display protection judgement operation control Outdoor liquid Continuous Cooling Outdoor liquid pipe Outdoor liquid pipe for 5s protection temperature sensor pipe temperature temperature operation only...
- Page 32 Abnormality Diagnosis Abnormality Protection LED 6 LED 5 LED 4 LED 3 LED 2 LED 1 Problem Check location display protection judgement operation control Power 4 times ― Power transistor PCB faulty transistor happen within module overheat Outdoor air module 30 minutes circuit (fan motor)
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Page 33: Disassembly And Assembly Instructions
16. Disassembly and Assembly Instructions WARNING High Voltage are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 16.1 Outdoor Unit Removal Procedure Caution! When handling electronic controller, be careful of electrostatic discharge. - Page 34 16.1.3 Removing the Control P.C. Board Remove the drip proof cover. Disconnect the connectors (lead wires of the compressor, sensor, and others). Remove the screw at the right side of the control box, and pull out the entire control box. Release the control P.C.
- Page 35 Disconnect the fan motor connector from the control P.C. Board. Loosen the 4 fan motor mounting screws then remove the fan motor.
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Page 36: Technical Data
17. Technical Data Technical data provided are based on the air conditioner running under free frequency. 17.1 Cool Mode Performance Data Unit setting: Standard piping length, Hi Fan, Cool mode at 60.8°F Voltage: 208-230V Indoor Air Temp. °C (°F) WB Outdoor Combination Air Temp. - Page 37 Indoor Air Temp. °C (°F) WB Outdoor Combination Air Temp. 16 (60.8) 17.5 (63.5) 18 (64.4) 19 (66.2) 22 (71.6) 24 (75.2) (Capacity) (kW) °C (°F) DB 22 (71.6) 5.55 1.02 5.72 1.01 5.78 1.00 5.89 0.99 6.48 0.98 6.88 0.97 25 (77) 5.49...
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Page 38: Heat Mode Performance Data
17.2 Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 68°F Voltage: 208-230V Outdoor Air Temp. °C (°F) WB Indoor Combination Air Temp. 15 (59) 10 (50) 6 (42.8) 0 (32) -5 (23) -10 (14) -15 (5) (Capacity) (kW) °C (°F) DB... - Page 39 Outdoor Air Temp. °C (°F) WB Indoor Combination Air Temp. 15 (59) 10 (50) 6 (42.8) 0 (32) -5 (23) -10 (14) -15 (5) (Capacity) (kW) °C (°F) DB 16 (60.8) 14.18 1.57 9.93 1.93 7.87 2.15 6.54 2.34 6.00 2.44 5.79 2.42...
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Page 40: Service Data
18. Service Data 18.1 Operation Characteristics Cooling Characteristic [Condition] Room temperature: 81°F (DBT), 66°F (WBT) Operation condition: High fan speed Piping Length: 24.6ft Compressor Freq: Fc Voltage: 208-230V A) Indoor unit capacity: Cooling (3.2 + 2.5: CS-E12RKUAW + CS-E9RKUAW), service mode frequency = 47Hz CS-E12RKUAW CS-E9RKUAW 64.000... - Page 41 Piping Length Characteristic Cooling [Condition] Room temperature: 81°F (DBT), 66°F (WBT) Operation condition: High fan speed Outdoor temperature: 95°F (DBT) Compressor Freq: Fc Voltage: 208-230V A) Indoor unit capacity: Cooling (3.2 + 2.5: CS-E12RKUAW + CS-E9RKUAW), service mode frequency = 47Hz CS-E12RKUAW CS-E9RKUAW 62.400...
- Page 42 Heating Characteristic [Condition] Room temperature: 70°F (DBT) Operation condition: High fan speed Piping Length: 24.6ft Compressor Freq: Fh Voltage: 208-230V A) Indoor unit capacity: Heating (3.2 + 2.5: CS-E12RKUAW + CS-E9RKUAW), service mode frequency = 64Hz CS-E12RKUAW CS-E9RKUAW 115.000 110.000 105.000 100.000...
- Page 43 Piping Length Characteristic Heating [Condition] Room temperature: 70°F (DBT) Operation condition: High fan speed Outdoor temperature: 47°F (DBT), 43°F (WBT) Compressor Freq: Fh Voltage: 208-230V A) Indoor unit capacity: Heating (3.2 + 2.5: CS-E12RKUAW + CS-E9RKUAW), service mode frequency = 64Hz CS-E12RKUAW CS-E9RKUAW 94.200...
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Page 44: List
19. Exploded View and Replacement Parts List 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 45 SAFETY REF. NO. DESCRIPTION & NAME Q’TY CU-2E18SBU REMARK CHASSY ASSY CWD52K1239A SOUND PROOF BOARD CWH151230 FAN MOTOR BRACKET CWD541127 SCREW - FAN MOTOR BRACKET CWH551217 CONDENSER COMPLETE ACXB32C00870 FAN MOTOR EHDS80CAC PROPELLER FAN ASSY CWH00K1006 NUT - PROPELLER FAN CWH561092 COMPRESSOR 5KD184XAB21...
- Page 46 SAFETY REF. NO. DESCRIPTION & NAME Q’TY CU-2E18SBU REMARK CABINET SIDE PLATE CWE041499A WIRE NET CWD041128A HANDLE CWE161010 INSTALLATION INSTRUCTION ACXF60-02470 INSTALLATION INSTRUCTION ACXF60-02480 ACCESSORY CO. (DRAIN ELBOW) CWG87C900 NUT - TERMINAL COVER CWH7080300J TERMINAL COVER CWH171035 TUBE ASSY (LIQUID 1) CWT026284 TUBE ASSY (LIQUID 2) CWT026285...