Table of Contents
Advertisement
Service Manual
CS-C73KE / CU-C73KE
CS-C93KE / CU-C93KE
CS-C123KE / CU-C123KE
Contents
Features .......................................................... 1
Functions ................................................... 2 - 4
Product Specifications ............................. 5 - 10
Dimensions ............................................ 11 - 12
Refrigeration Cycle Diagram ......................... 13
Block Diagram ............................................... 14
Wiring Diagram .............................................. 15
Operation Details ................................... 16 - 23
Installation Information .......................... 24 - 25
2-way, 3-way Valves .............................. 26 - 32
Servicing Information ............................. 33 - 36
Troubleshooting Guide .......................... 37 - 38
Technical Data ....................................... 39 - 40
Exploded View ................................... 41, 43, 45
Replacement Parts List ..................... 42, 44, 46
Electronic Parts List ....................................... 47
ORDER NO. MAC9810034C2
Room Air Conditioners
© 1998 Matsushita Air-Conditioning Corp. Sdn. Bhd.
(183914D)
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Panasonic CS-C73KE
Summary of Contents for Panasonic CS-C73KE
-
Page 1: Table Of Contents
ORDER NO. MAC9810034C2 Service Manual Room Air Conditioners CS-C73KE / CU-C73KE CS-C93KE / CU-C93KE CS-C123KE / CU-C123KE Contents Features ............1 Functions ........... 2 – 4 Product Specifications ......5 – 10 Dimensions ..........11 – 12 Refrigeration Cycle Diagram ......13 Block Diagram .......... -
Page 2: Features
CS-C73KE ! ! ! ! ! WARNING 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. -
Page 3: Functions
CS-C73KE Functions Remote Control OFF / ON I TEMP. Operation OFF / ON Room Temperature Setting • Temperature Setting (16°C to 30°C) • Automatic Operation MODE Operation Mode Selection 2°C higher than standard • Automatic Operation Mode AUTO Standard •... - Page 4 CS-C73KE Functions Indoor Unit POWER I Power Switch OFF / ON Random Auto Restart Control • Operation is restarted randomly after power AUTO failure at previous setting mode. OFF / ON Auto Operation Button Anti-Freezing Control • Used when the remote control cannot be used.
-
Page 5: Functions
CS-C73KE Functions Outdoor Unit CU-C123KE CU-C73KE, CU-C93KE Compressor Reverse Rotation Protection Control • To protect compressor from reverse rotation when there is a instantaneous power failure. Overload Protector • 2-Stage OLP to protect the compressor. Overload Protector will trip when –... -
Page 6: Product Specifications
CS-C73KE Product Specifications Unit CU-C73KE CS-C73KE 2.05 - 2.00 Cooling Capacity Btu/h 7,000 - 6,830 Moisture Removal Pint/h Phase Single Power Source 230 - 220 Cycle SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Air Volume Indoor Air (Lo) 5.5 (190) /min (cfm) –... - Page 7 CS-C73KE Product Specifications Unit CS-C73KE CU-C73KE Heat Evaporator Description Condenser Exchanger Tube material Copper Copper Fin material Aluminium Aluminium Fin Type Slit Fin Louver Fin Row / Stage (Plate fin configuration, forced draft) 2 × 14 1 × 18 614 × 294 × 25.4 Size (W ×...
- Page 8 CS-C73KE Product Specifications Unit CU-C93KE CS-C93KE 2.75 - 2.65 Cooling Capacity Btu/h 9,390 - 9,050 Moisture Removal Pint/h Phase Single Power Source 230 - 220 Cycle SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Air Volume Indoor Air (Lo) 6.8 (240) /min (cfm) –...
- Page 9 CS-C73KE Product Specifications Unit CS-C93KE CU-C93KE Evaporator Description Condenser Heat Tube material Copper Copper Exchanger Fin material Aluminium Aluminium Fin Type Slit Fin Louver Fin Row / Stage (Plate fin configuration, forced draft) 2 × 14 1 × 18 614 × 294 × 25.4 Size (W ×...
- Page 10 CS-C73KE Product Specifications Unit CU-C123KE CS-C123KE 3.65 - 3.52 Cooling Capacity Btu/h 12,500 - 12,000 Moisture Removal Pint/h Phase Single Power Source 230 - 220 Cycle SIDE VIEW TOP VIEW OUTLET Airflow Method INTAKE Air Volume Indoor Air (Lo) 7.4 (260) /min (cfm) –...
-
Page 11: Product Specifications
CS-C73KE Product Specifications Unit CS-C123KE CU-C123KE Heat Evaporator Description Condenser Exchanger Tube material Copper Copper Fin material Aluminium Aluminium Fin Type Slit Fin Louver Fin Row / Stage (Plate fin configuration, forced draft) 2 × 14 1 × 20 614 × 294 × 25.4 Size (W ×... -
Page 12: Dimensions
CS-C73KE Dimensions CS-C73KE / CS-C93KE / CS-C123KE Unit : mm <Front View> Air intake direction Air outlet Right piping hole direction Left piping hole <Side View> <Side View> Remote control transmitter <Back View> GAS SIDE LIQUID SIDE TEMP DRAIN PORT POWERFUL Relative position between the indoor unit and the installation plate <Front View>... -
Page 13: Dimensions
CS-C73KE Dimensions CU-C73KE / CU-C93KE 2-way valve at Liquid side (High Pressure) 3-way valve at Gas side (Low Pressure) CU-C123KE Space necessary for installation (52) 10 cm 10 cm 100 cm Anchor Bolt Pitch 323 x 500 2-Way Valve at Liquid side... -
Page 14: Refrigeration Cycle Diagram
CS-C73KE Refrigeration Cycle Diagram CS-C73KE / CU-C73KE CS-C93KE / CU-C93KE CS-C123KE / CU-C123KE INDOOR OUTDOOR CAPILLARY TUBE 2-WAY VALVE INTAKE TEMP. HEAT SENSOR EXCHENGER TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR) HEAT EXCHANGER (CONDENSER) 3-WAY VALVE COMPRESSOR – 13 –... -
Page 15: Block Diagram
CS-C73KE Block Diagram – 14 –... -
Page 16: Wiring Diagram
CS-C73KE Wiring Diagram CS-C73KE / CU-C73KE CS-C93KE / CU-C93KE CS-C123KE / CU-C123KE WIRELESS ELECTRONIC DISPLAY LAMP REMOTE CONTROLLER CONTROL (RECEIVER) CN-DISP(W) CN-RCV (W) 220-230V, 50Hz POWER SUPPLY CORD REMARKS: : BLUE : BROWN REMOTE CONTROL No. : BLACK CN-DISP(W) ELECTRONIC CONTROLLER... -
Page 17: Operation Details
CS-C73KE Operation Details 1) Cooling Mode Operation Cooling in operation according to Remote Control setting. Time Delay Safety Control (3 minutes) • When the compressor is stopped by Power Switch or Remote Control, it restarts after 3 minutes when the Power Switch or Remote Control is turned ON. - Page 18 CS-C73KE Operation Details Automatic Fan Speed Mode When Automatic Fan Speed is selected at Remote Control during cooling operation. • Fan speed rotates in the range of Hi to Me. • Deodorizing Control. Indoor stop stop stop stop 40" 30"...
- Page 19 CS-C73KE Operation Details 2) Soft Dry Mode Operation • The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote Control, and then Soft Dry operation will start. • During Soft Dry operation, the Indoor Fan will operate and stop at 4-second intervals at low speed.
- Page 20 CS-C73KE Operation Details Soft Dry Operation Time Diagram a b c d e f g h i j k l m n o p q r s t u v Intake Air Temperature Cooling ON 1.5°C Cooling OFF Set Temp.
- Page 21 CS-C73KE Operation Details 3) Air Circulation Mode Operation • When the temperature near the ceiling reaches the setting temperature, Air Circulation Mode operation commences at low airflow volume. It stops when the temperature drops to 2°C below the setting temperature.
- Page 22 CS-C73KE Operation Details 5) Sleep Mode Auto Operation Cooling or Soft Dry Operation When you press the SLEEP Mode, the following move- Approx. 0.5°C increase ment will start to avoid overcooling. TEMP. • When the room temperature reaches the setting Approx.
- Page 23 CS-C73KE Operation Details – Fan Speed control button is pressed. – Sleep mode button is pressed ON. – Operation mode is changed. 8) Random Auto Restart Control • If there is a power failure, operation will be automatically restarted after 3 to 5 1/2 minutes when the power is resumed.
-
Page 24: Operation Details
CS-C73KE Operation Details 10) Airflow Direction Control Horizontal Airflow Direction Auto-Control Upper limit 36° • When set a Airflow Direction Auto-Control with Swing up and down remote control, the louver swings up and down as 61° shown in the diagram. -
Page 25: Installation Information
CS-C73KE Installation Information Attached accessories Accessories part Qty. Accessories part Qty. Band Installation plate Vinyl tape Installation plate fixing screw Vinyl tape Remote control Battery Air purifying filter Accessories: Flaring piping kit CZ-3F5, 7AEN (CS/CU-C73KE, C93KE) CZ-4F5, 7, 10AN (CS/CU-C123KE) -
Page 26: Installation Information
CS-C73KE Installation Information Indoor / Outdoor unit installation diagram Length of power supply cord Piping direction Attention not to bend up drain hose (Front side) about 1.1 m about 1.8 m Right Right < < < < rear Left Left... -
Page 27: 2-Way, 3-Way Valves
CS-C73KE 2-way • 3-way Valve 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Valve cap Flare nut Hexagonal wrench (4 mm) Flare nut Open position Closed position Open position Closed position piping piping connection connection Service port Service port cap... -
Page 28: Evacuation Of Installation
CS-C73KE 1 Evacuation of Installation WHEN INSTALLING AN AIR CONDITIONER, BE If air remain in the indoor unit and refrigeration SURE TO EVACUATE THE AIR INSIDE THE INDOOR pipes, it will affect the compressor, reduce to cool- UNIT AND PIPES in the following procedure. -
Page 29: Pumping Down
CS-C73KE 2 Pumping down (Indoor unit) (Liquid side) (Outdoor unit) 2-way valve Closed (Gas side) 3-way valve CLOSE Open Refrigerant Reclaiming Equipment CLOSE Procedure: (1) Confirm that both the 2-way and 3-way valves are (6) Operate the air conditioner at the cooling cycle set to the opened position. - Page 30 CS-C73KE 3 Evacuation of Re-installation WHEN RE-INSTALLING AN AIR CONDITIONER, BE If air remain in the indoor unit and refrigeration SURE TO EVACUATE THE AIR INSIDE THE INDOOR pipes, it will affect the compressor, reduce to cool- ing capacity, and could lead to a malfunction.
-
Page 31: Way, 3-Way Valves
CS-C73KE 4 Balance refrigerant of the 2-way, 3-way valves (Lack of refrigerant in the refrigeration cycle) (Indoor unit) (Liquid side) (Outdoor unit) 2-way valve Open (Gas side) 3-way valve OPEN Open Refrigerant Reclaiming Equipment CLOSE Procedure: (1) Confirm that both the 2-way and 3-way valves are set to the open position. - Page 32 CS-C73KE 5 Evacuation (No refrigerant in the refrigeration cycle) (Indoor unit) (Liquid side) (Outdoor unit) 2-way valve Open (Gas side) 3-way valve OPEN Open Vacuum pump CLOSE Procedure: (1) Connect the vacuum pump to the charge set’s centre hose. (2) Evacuation for approximately one hour.
-
Page 33: Gas Charging
CS-C73KE 6 Gas charging (After Evacuation) (Indoor unit) (Liquid side) (Outdoor unit) 2-way valve Open (Gas side) Check valve 3-way valve Open Charging cylinder OPEN CLOSE Procedure: (1) Connect the charge hose to the charging cyl- This is different from previous procedures. Because inder. -
Page 34: Servicing Information
CS-C73KE Servicing Information Tabs Release hooks Inspection points for the Indoor Electronic Controller 1. The Electronic Controller, a signal Receiver and an Tabs Indicator (Fig. 2) can be seen by the below steps: – Remove the 2 caps and 2 screws at the bottom of the front grille. - Page 35 CS-C73KE Servicing Information 2. Remove the Fan Motor by :- Fan motor connector – Release the fan motor leadwire by pressing the hook at the center of the connector. (Fig. 4) – Then remove the particular piece that holding the fan motor by pressing the tab. (Fig. 4)
- Page 36 CS-C73KE Servicing Information Cross Flow Fan Removal Procedure. 1. Remove the control board and the fan motor by referring to the "Indoor Fan Motor Removal Procedure". 2. Remove the evaporator screw (Fig. 6) Evaporator screw Fig. 6 3. Press the particular piece to loosen the evaporator.
-
Page 37: Servicing Information
CS-C73KE Servicing Information • Remote Control Reset Reset terminal When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work. If this happens, remove the back cover of the remote... -
Page 38: Troubleshooting Guide
CS-C73KE Troubleshooting Guide Refrigeration cycle system In order to diagnose malfunctions, make sure that Normal Pressure and Outlet Air Temperature (Standard) there are no electrical problems before inspect- ing the refrigeration cycle. Such problems include Gas pressure Outlet air temperature... -
Page 39: Troubleshooting Guide
CS-C73KE Troubleshooting Guide 1. Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Condition of the air Low Pressure High Pressure Electric current during operation conditioner Insufficient refrigerant (gas leakage) Clogged capillary tube or Strainer... -
Page 40: Technical Data
CS-C73KE Technical Data L L L L L Thermostat characteristics CS-C73KE / CS-C93KE / CS-C123KE • Soft Dry • Cooling (°C) (°C) COMP. ON Cooling ON COMP. OFF = Set Temperature Cooling OFF = Set Temperature, Soft Dry OFF, Soft Dry ON Diff. -
Page 41: Technical Data
CS-C73KE Technical Data L L L L L Operation characteristics CS-C93KE / CU-C93KE • Cooling Characteristic • Piping Length Characteristic 230V 230V 220V 220V 0.60 0.60 0.55 0.55 0.50 0.50 OUTDOOR ROOM TEMPERATURE (°C) PIPING LENGTH (m) [Condition] Room temperature: 27/19°C [Condition] Room temperature: 27/19°C... -
Page 42: Exploded View
CS-C73KE Exploded View CS-C73KE / CS-C93KE / CS-C123KE " < > & ( & CS-C73KE (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 43: Replacement Parts List
CS-C73KE Replacement Parts List <Model: CS-C73KE / CS-C93KE / CS-C123KE> DESCRIPTION & NAME CS-C73KE CS-C93KE CS-C123KE CHASSY COMPLETE CWD50C338 PARTICULAR PIECE CWD931019 FAN MOTOR CWA92288 CWA92289 CWA92290 LEAD WIRE - FAN MOTOR CWA67C2097 CROSS FLOW FAN CWH02C060 BEARING CWH64K007 SCREW - CROSS FLOW FAN... - Page 44 CS-C73KE Exploded View CU-C73KE / CU-C93KE > < " & (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. – 43 –...
- Page 45 CS-C73KE Replacement Parts List <Model: CU-C73KE / CU-C93KE DESCRIPTION & NAME Q’TY CU-C73KE CU-C93KE REMARKS CHASSY ASS’Y CWD50K525B FAN MOTOR BRACKET CWD54113 SCREW – FAN MOTOR BRACKET CWH4580399 CWA95238 FAN MOTOR SCREW – FAN MOTOR MOUNT CWH55027 PROPELLER FAN CWH00K040 NUT –...
- Page 46 CS-C73KE Exploded View CU-C123KE < > & " (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. – 45 –...
- Page 47 CS-C73KE Replacement Parts List <Model: CU-C123KE DESCRIPTION & NAME Q’TY CU-C123KE REMARKS CHASSY ASS’Y CWD50K658A FAN MOTOR BRACKET CWD54254 SCREW – FAN MOTOR BRACKET CWH55413 FAN MOTOR CWA95378 SCREW – FAN MOTOR MOUNT CWH55252 COMPRESSOR 2KS224D5CA02 ANTI – VIBRATION BUSHING CWH50055 NUT –...
-
Page 48: Electronic Parts List
CS-C73KE Electronic Parts List <Model: CWA741351 SYMBOL DESCRIPTION & NAME PART NO. C–FM SH CAPACITOR A31698 DIODE A54CS1VB20E FUSE FUSE XBA2C31TR0 INTEGRATED CIRCUIT A52C040 INTEGRATED CIRCUIT A52C094 RY–Hi, RY–M, RY–SHi ELECTRO MAGNETIC RELAY A00160 RY–PWR ELECTRO MAGNETIC RELAY A00106 SSR 1 TYRISTOR A56W2DEH1–5... - Page 49 CS-C73K/C93K/C1233K CS-C73K/C93K/C123K CS-C73K/C93K/C123K CS-C73K/C93K/C123K ELECTRONIC CIRCUIT DIAGRAM • CS-C73KE / CU-C73KE • CS-C93KE / CU-C93KE Fig. 1 Fig. 2 • CS-C123KE / CU-C123KE Senser (Thermistor) Intake Air/ Indoor Heat Characteristics Exchanger Temp. MAIN MAIN SWITCH Pipe Temp. Sensor RECEIVER AC 220-230V Intake Air Temp.
- Page 50 CS-C73K/C93K/C123K CS-C73K/C93K/C123K CS-C73K/C93K/C123K CS-C73K/C93K/C123K How to use electronic circuit diagram ELECTRONIC CIRCUIT DIAGRAM PRINT PATTERN PRINT PATTERN • INDOOR UNIT PRINTED CIRCUIT BOARD INDOOR UNIT PRINTED CIRCUIT BOARD Before using the circuit diagram, read the following carefully. REMOTE CONTROL * Voltage measurement * Indications for capacitor Voltage has been measured with a digital a.