Panasonic CS-C73KE Service Manual

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Service Manual

Room Air Conditioners

Contents

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Features .......................................................... 1

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Functions ................................................... 2 – 4

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Product Specifications ............................. 5 – 10

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Dimensions ............................................ 11 – 12

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Refrigeration Cycle Diagram ......................... 13

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Block Diagram ............................................... 14

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Wiring Diagram .............................................. 15

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Operation Details ................................... 16 – 23

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Installation Information .......................... 24 – 25

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2-way, 3-way Valves .............................. 26 – 32

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Servicing Information ............................. 33 – 36

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Troubleshooting Guide .......................... 37 – 38

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Technical Data ....................................... 39 – 40

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Exploded View ................................... 41, 43, 45

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Replacement Parts List ..................... 42, 44, 46

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Electronic Parts List ....................................... 47

CS-C73KE / CU-C73KE

CS-C93KE / CU-C93KE

CS-C123KE / CU-C123KE

ORDER NO. MAC9810034C2

1998 Matsushita Air-Conditioning Corp. Sdn. Bhd.

(183914D)

tion is a violation of law.

Untitled-2

6/28/00, 5:22 PM

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Summary of CS-C73KE

Page 1
Service manual room air conditioners contents ● features .......................................................... 1 ● functions ................................................... 2 – 4 ● product specifications ............................. 5 – 10 ● dimensions ........................................
Page 2: Features
– 1 – mac9512086c2 cs-c73ke • high efficiency • compact design • comfort enviroment – 8 hours of sleep mode operation – air purifying filter with deodorizing function to reduce dust, smoke and odours. • auto restart – auto restart at random operation after power failure • removable and washable fron...
Page 3: Functions
– 2 – mac9512086c2 cs-c73ke remote control functions operation off / on off / on i room temperature setting temp. • temperature setting (16 ° c to 30 ° c) • automatic operation 2 ° c higher than standard standard 2 ° c lower than standard operation mode selection • auto automatic operation mode • co...
Page 4: Functions
– 3 – mac9512086c2 cs-c73ke indoor unit functions power switch off / on power i auto operation button • used when the remote control cannot be used. Remote control signal receiving sound • it can be controlled by pressing auto operation button for 10 seconds. Auto off / on operation test running / p...
Page 5: Functions
– 4 – mac9512086c2 cs-c73ke compressor reverse rotation protection control outdoor unit functions • 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 – temperature of ...
Page 6: Product Specifications
– 5 – mac9512086c2 cs-c73ke product specifications inner diameter length input running current cop starting current cooling capacity moisture removal power source airflow method air volume noise level electrical data piping connection port (flare piping) pipe size (flare piping) drain hose power cor...
Page 7: Product Specifications
– 6 – mac9512086c2 cs-c73ke product specifications description tube material fin material fin type row / stage fpi size (w × h × l) µ f, vac µ f, vac length flow rate inner diameter material style heat exchanger refrigerant control device refrigeration oil refrigerant (r-22) thermostat protection de...
Page 8: Product Specifications
– 7 – mac9512086c2 cs-c73ke unit kw btu/h s /h pint/h phase v cycle outlet intake m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) db (a) w a w/w a inch inch inch inch mm m m inch (mm) inch (mm) inch (mm) lb (kg) w w w rpm rpm rpm product specifications inner diameter length input running...
Page 9: Product Specifications
– 8 – mac9512086c2 cs-c73ke heat exchanger refrigerant control device refrigeration oil refrigerant (r-22) thermostat protection device capillary tube air filter capacity control compressor capacitor fan motor capacitor product specifications description tube material fin material fin type row / sta...
Page 10: Product Specifications
– 9 – mac9512086c2 cs-c73ke unit kw btu/h s /h pint/h phase v cycle outlet intake m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) m 3 /min (cfm) db (a) w a w/w a inch inch inch inch mm m m inch (mm) inch (mm) inch (mm) lb (kg) w w w rpm rpm rpm product specifications inner diameter length input running...
Page 11: Product Specifications
– 10 – mac9512086c2 cs-c73ke product specifications description tube material fin material fin type row / stage fpi size (w × h × l) µ f, vac µ f, vac length flow rate inner diameter material style heat exchanger refrigerant control device refrigeration oil refrigerant (r-22) thermostat protection d...
Page 12: Dimensions
– 11 – mac9512086c2 cs-c73ke 799 60 58 60 83 279 60 36 190 65 18 122 temp powerful c 425 48 gas side liquid side drain port 65 (40) 710 (49) 257.2 17.8 (60) (99) 100 100 350 4 550 16.5 dimensions cs-c73ke / cs-c93ke / cs-c123ke right piping hole centre notch slot (2 places) left piping hole slot (2 ...
Page 13: Dimensions
– 12 – mac9512086c2 cs-c73ke 11 67 67 540 285 (323) 347 7.5 100 cm 10 cm 10 cm 100 500 99 (52) 69 32 162 (120) 699 dimensions cu-c123ke cu-c73ke / cu-c93ke anchor bolt pitch 323 x 500 space necessary for installation 2-way valve at liquid side (high pressure) 3-way valve at gas side (low pressure) 6...
Page 14: Refrigeration Cycle Diagram
– 13 – mac9512086c2 cs-c73ke refrigeration cycle diagram cs-c73ke / cu-c73ke cs-c93ke / cu-c93ke cs-c123ke / cu-c123ke compressor sensor temp. Air heat exchenger temp. Indoor outdoor heat exchanger (evaporator) heat exchanger (condenser) 2-way valve valve 3-way tube sensor intake capillary untitled-...
Page 15: Block Diagram
– 14 – mac9512086c2 cs-c73ke 2 2 1 1 j9990114 "c" fuse 3.15a ry-pwr receiver p.C.B. Indoor unit outdoor unit single phase ac 220-230v 50hz c-fm ry-shi ry-h trans- former (102°c) fuse thermal znr1 compressor fan motor fan motor overload protector power switch electronic controller indicates the elect...
Page 16: Wiring Diagram
– 15 – mac9512086c2 cs-c73ke 2 1 protector over load terminal outdoor unit yellow red blue compressor terminal brand mark capacitor fan motor capacitor r b b y r b b gry y compressor fuse 3.15a b cn-fuse(b) cr4 3 1 w w r r r r (pipe temp.) sensor (w) ac znr1 (test run) y 7 220-230v, 50hz bl bl contr...
Page 17: Operation Details
– 16 – mac9512086c2 cs-c73ke operation details 1) cooling mode operation cooling in operation according to remote control setting. • 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. • when the setting ...
Page 18: Operation Details
– 17 – mac9512086c2 cs-c73ke 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. Operation details cooling operation time diagram * 1 fan speed is hi until the compressor stops ...
Page 19: Operation Details
– 18 – mac9512086c2 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 sto...
Page 20: Operation Details
– 19 – mac9512086c2 cs-c73ke operation details soft dry operation time diagram a – c, p~r : cooling operation c – p, r – v : soft dry operation e – f : soft dry off j – l : 60 sec. Forced operation q – t : anti freezing control a b c d e f g h i j k l m n o p q r s t u v basic time compressor indoor...
Page 21: Operation Details
– 20 – mac9512086c2 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. Air ci...
Page 22: Operation Details
– 21 – mac9512086c2 cs-c73ke operation details 5) sleep mode auto operation cooling or soft dry operation when you press the sleep mode, the following move- ment will start to avoid overcooling. • when the room temperature reaches the setting temperature or after 1 hour of operation, sleep shift ope...
Page 23: Operation Details
– 22 – mac9512086c2 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 res...
Page 24: Operation Details
– 23 – mac9512086c2 cs-c73ke operation details 10) airflow direction control airflow direction auto-control • when set a airflow direction auto-control with remote control, the louver swings up and down as shown in the diagram. • the louver does not swing when the indoor fan stops during operation. ...
Page 25: Installation Information
– 24 – mac9512086c2 cs-c73ke no. 1 2 3 4 5 accessories part installation plate installation plate fixing screw remote control battery air purifying filter qty. 1 4 1 2 2 indoor unit outdoor unit model c73ke/c93ke c123ke piping size gas 3/8" 1/2" liquid 1/4" 1/4" common length 7.5 7.5 max. Elevation ...
Page 26: Installation Information
– 25 – mac9512086c2 cs-c73ke 5 cm or more 5 cm or more insulation of piping connection installation information indoor / outdoor unit installation diagram length of power supply cord piping direction attention not to bend up drain hose about 1.1 m about 1.8 m right rear right bottom left rear left b...
Page 27: 2-Way
– 26 – mac9512086c2 cs-c73ke shaft position closed (with valve cap) closed (clockwise) open (with valve cap) open (counter-clockwise) open open open open 2-way valve (liquid side) 3-way valve (gas side) works shipping evacuation installation and re-installation operation pumping down (transferring) ...
Page 28
– 27 – mac9512086c2 cs-c73ke 1 evacuation of installation when installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure. If air remain in the indoor unit and refrigeration pipes, it will affect the compressor, reduce to cool- ing capacity...
Page 29
– 28 – mac9512086c2 cs-c73ke 2 pumping down procedure: (1) confirm that both the 2-way and 3-way valves are set to the opened position. ● remove the valve stem caps and confirm that the valve stems are in the opened position. ● be sure to use a hexagonal wrench to operate the valve stems. (2) operat...
Page 30
– 29 – mac9512086c2 cs-c73ke 3 evacuation of re-installation when re-installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure. If air remain in the indoor unit and refrigeration pipes, it will affect the compressor, reduce to cool- ing ca...
Page 31
– 30 – mac9512086c2 cs-c73ke 4 balance refrigerant of the 2-way, 3-way valves (lack of refrigerant in the refrigeration cycle) (indoor unit) (liquid side) (gas side) open close lo hi refrigerant reclaiming equipment 3-way valve open 2-way valve open (outdoor unit) procedure: (1) confirm that both th...
Page 32
– 31 – mac9512086c2 cs-c73ke 5 evacuation (no refrigerant in the refrigeration cycle) procedure: (1) connect the vacuum pump to the charge set’s centre hose. (2) evacuation for approximately one hour. ● confirm that the gauge needle has moved toward –0.1 mpa (–76 cmhg) [vacuum of 4 mmhg or less.] (3...
Page 33
– 32 – mac9512086c2 cs-c73ke 6 gas charging (after evacuation) procedure: (1) connect the charge hose to the charging cyl- inder. ● connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. (2) purge the air from the charge hose. ● open the valve...
Page 34: Servicing Information
– 33 – mac9512086c2 cs-c73ke servicing information ● inspection points for the indoor electronic controller 1. The electronic controller, a signal receiver and an indicator (fig. 2) can be seen by the below steps: – remove the 2 caps and 2 screws at the bottom of the front grille. (fig. 1) – remove ...
Page 35: Servicing Information
– 34 – mac9512086c2 cs-c73ke servicing information 2. Remove the fan motor by :- – 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) – remove the discharge grille an...
Page 36: Servicing Information
– 35 – mac9512086c2 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) 3. Press the particular piece to loosen the evaporator. (fig. 7) 4. R...
Page 37: Servicing Information
– 36 – mac9512086c2 cs-c73ke reset servicing information ● by adding a jumper wire to the remote control side and a carbon resistor (1/4 w, 10 k Ω ) to the indoor printed circuit board, it is possible to select from 4 types of transmission codes including the condition at time of delivery condition ...
Page 38: Troubleshooting Guide
– 37 – mac9512086c2 cs-c73ke refrigeration cycle system in order to diagnose malfunctions, make sure that there are no electrical problems before inspect- ing the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan....
Page 39: Troubleshooting Guide
– 38 – mac9512086c2 cs-c73ke 2. Diagnosis methods of a malfunction of a compressor nature of fault insufficient compressing of a compressor locked compressor symptom 1. Relationship between the condition of the air conditioner and pressure and electric current cooling mode condition of the air condi...
Page 40: Technical Data
– 39 – mac9512086c2 cs-c73ke technical data l l l l l thermostat characteristics cs-c73ke / cs-c93ke / cs-c123ke • cooling • soft dry l l l l l operation characteristics cs-c73ke / cu-c73ke • piping length characteristic • cooling characteristic 16 16 ( ° c) thermostat setting (remote control) intak...
Page 41: Technical Data
– 40 – mac9512086c2 cs-c73ke technical data l l l l l operation characteristics cs-c93ke / cu-c93ke • piping length characteristic • cooling characteristic • cooling characteristic • piping length characteristic cs-c123ke / cu-c123ke 30 32 34 36 38 40 42 44 outdoor room temperature ( ° c) [condition...
Page 43: Replacement Parts List
– 42 – mac9512086c2 cs-c73ke replacement parts list description & name chassy complete particular piece fan motor lead wire - fan motor cross flow fan bearing screw - cross flow fan evaporator & tube ass'y complete intake air sensor holder anti vibration bushing flare nut (1/4") flare nut (1/2") or ...
Page 44: Exploded View
– 43 – mac9512086c2 cs-c73ke exploded view cu-c73ke / cu-c93ke [ > / : ; = . - @ " ? 5 2 4 3 6 7 ( , ~ + ) 1 # ! 9 8 $ % & (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. \ untitled-8 6/28/00, 5:...
Page 45: Replacement Parts List
– 44 – mac9512086c2 cs-c73ke replacement parts list no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 cu-c73ke cwd50k525b cwd54113 cwh4580399 cwa95238 cwh55027 cwh00k040 cwh56032 2rs110d5ca04 cwh50077 cwh56000 cwb32c323 cwh35k017a cwb01438 cwb02277 cwt01c589 ...
Page 47: Replacement Parts List
– 46 – mac9512086c2 cs-c73ke replacement parts list no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 description & name chassy ass’y fan motor bracket screw – fan motor bracket fan motor screw – fan motor mount compressor anti – vibration bush...
Page 48: Electronic Parts List
– 47 – mac9512086c2 cs-c73ke electronic parts list description & name sh capacitor diode fuse integrated circuit integrated circuit electro magnetic relay electro magnetic relay tyristor push switch transformer fuse diode part no. A31698 a54cs1vb20e xba2c31tr0 a52c040 a52c094 a00160 a00106 a56w2deh1...
Page 49
Fig. 2 fig. 1 cs-c73k/c93k/c1233k cs-c73k/c93k/c123k electronic circuit diagram • cs-c73ke / cu-c73ke • cs-c93ke / cu-c93ke • cs-c123ke / cu-c123ke cs-c73k/c93k/c123k cs-c73k/c93k/c123k fig. 3 olp characteristics (compressor) 0 10 20 30 40 50 60 70 0 10 20 30 40 50 -10 senser (thermistor) characteri...
Page 50
Print pattern indoor unit printed circuit board top view name sleep mode waiting sleep mode operation real timer time delay safety control forced operation time save control anti-freezing control mode jugdement soft dry deodorizing control comp. Reverse rotation detection comp./fan motor delay timer...