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Panasonic CS-A123KE Service Manual

Summary of CS-A123KE

  • Page 1

    Service manual room air conditioners contents ● features .......................................................... 1 ● functions ................................................... 2 – 4 ● product specifications ............................. 5 – 10 ● dimensions ........................................

  • Page 2: Features

    – 1 – mac9512086c2 cs-a73ke • high efficiency • compact design • comfort enviroment – 8 hours of sleep mode operation – air purifying filter with deodorizing function to reduce dust, smoke and odours. • random auto restart – auto restart at randomly after power failure • removable and washable front...

  • Page 3: Functions

    – 2 – mac9512086c2 cs-a73ke remote control functions operation off / on off / on i room temperature setting temp. • temperature setting (16 ° c to 30 ° c) • automatic operation operation with 2 ° c higher than standard temperature. Operation with standard temperature. Operation with 2 ° c lower than...

  • Page 4: Functions

    – 3 – mac9512086c2 cs-a73ke 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-a73ke 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-a73ke product specifications cooling capacity heating 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 cord length number of core-wire dimensions net weig...

  • Page 7: Product Specifications

    – 6 – mac9512086c2 cs-a73ke 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-a73ke product specifications inner diameter length input running current cop starting current cooling capacity heating capacity moisture removal power source airflow method air volume noise level electrical data piping connection port (flare piping) pipe size (flare piping) dra...

  • Page 9: Product Specifications

    – 8 – mac9512086c2 cs-a73ke product specifications heat exchanger refrigerant control device refrigeration oil refrigeration (r-22) thermostat protection device capillary tube air filter capacity control compressor capacitor fan motor capacitor description tube material fin material fin type row / s...

  • Page 10: Product Specifications

    – 9 – mac9512086c2 cs-a73ke product specifications inner diameter length input running current cop starting current cooling capacity heating capacity moisture removal power source airflow method air volume noise level electrical data piping connection port (flare piping) pipe size (flare piping) dra...

  • Page 11: Product Specifications

    – 10 – mac9512086c2 cs-a73ke 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 unit mm (c.C) g (oz) mm s /min mm (plate fin configuration, forced draft) capillary tube • specificati...

  • Page 12: Dimensions

    – 11 – mac9512086c2 cs-a73ke 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-a73ke / cs-a93ke / cs-a123ke right piping hole centre notch slot (2 places) left piping hole slot (2 ...

  • Page 13: Dimensions

    – 12 – mac9512086c2 cs-a73ke 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-a123ke cu-a73ke / cu-a93ke 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-a73ke refrigeration cycle diagram cs-a73ke / cu-a73ke cs-a93ke / cu-a93ke cs-a123ke / cu-a123ke comp. 4-way valve c1 c3 c2 check valve pipe temp. Sensor (t.R.S) sensor temp. Intake pipe temp. Sensor indoor outdoor cooling heating heat exchanger (evaporator) heat exchanger (con...

  • Page 15: Block Diagram

    – 14 – mac9512086c2 cs-a73ke cs-a73ke / cu-a73ke cs-a93ke / cu-a93ke cs-a123ke / cu-a123ke block diagram 9c "c" fuse 2a ry-pwr receiver p.C.B. Indoor unit outdoor unit single phase ac 220-230v 50hz c-fm ry-shi ry-h trans- former znr1 fan motor power switch electronic controller indicates the electro...

  • Page 16: Wiring Diagram

    – 15 – mac9512086c2 cs-a73ke wiring diagram remarks: b : blue br : brown bl : black w : white r : red o : orange p : pink y/g : yellow/ green model connection yellow-blue yellow-brown brown-orange orange-white white-red resistance of indoor fan motor windings cs-a73ke cwa92288 536.5 Ω 77.1 Ω 43.9 Ω ...

  • Page 17: Operation Details

    – 16 – mac9512086c2 cs-a73ke 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-a73ke operation details compressor restarts (3 minutes waiting) compressor off ➡ ➡ comp. Operates for 50 secs. And fan motor off • after the compressor starts for 50 seconds but the outdoor fan motor is still off, the compressor will stop and restart automatically. (time delay...

  • Page 19: Operation Details

    – 18 – mac9512086c2 cs-a73ke cooling operation time diagram d – g : time delay safety control (waiting for 3 minutes) g – h : 60 sec. Forced operation h – o : 7 min. Time saved control q – t : anti freezing control operation stop a b c d e f g h i j k l m n o p q r s t u v w x y z basic time compres...

  • Page 20: Operation Details

    – 19 – mac9512086c2 cs-a73ke 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 21: Operation Details

    – 20 – mac9512086c2 cs-a73ke 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 operation stop a b c d e f g h i j k l m n o p q r s t u v basic time co...

  • Page 22: Operation Details

    – 21 – mac9512086c2 cs-a73ke operation details time delay safety control ➡ ➡ compressor restarts (4 minutes waiting) compressor off • compressor starts for 5 minutes • ∆ t 5 ° c for 2 minutes 123456789012 123456789012 123456789012 123456789012 123456789012 123456789012 123456789012 123456789012 1234...

  • Page 23: Operation Details

    – 22 – mac9512086c2 cs-a73ke automatic fan speed mode when automatic fan speed is selected at remote control during heating operation. • fan speed rotates in the range of me ➔ slo according to the heat exchanger temperature. • if use manual fan speed, at above diagram will operate with setting fan s...

  • Page 24: Operation Details

    – 23 – cs-a73ke mac9509078c2 operation details deicing control deice starts to prevent frosting at outdoor heat exchanger. • normal deicing deice operation detection commences after 30 minutes of heating operation starts or 60 minutes after previous deice operation. If the trs (thermal reed switch) ...

  • Page 25: Operation Details

    – 24 – mac9509078c2 cs-a73ke normal deicing time diagram operation details a b c d e f g h i j k l m n o p q r 39 ° c 34 ° c 30 ° c (open) 4 ° c (close) –3 ° c 30" 30" td basic time compressor 4-way valve indoor fan outdoor fan operation led indoor heat exchanger temp. (trs) outdoor heat exchanger t...

  • Page 26: Operation Details

    – 25 – cs-a73ke mac9509078c2 operation details 4) automatic mode operation a) when the automatic mode operation is selected, the indoor fan operates at lo-- fan speed for 20 second to sense intake air temperature and determine the 1st operation mode. B) operation mode will be determine again after 1...

  • Page 27: Operation Details

    – 26 – mac9509078c2 cs-a73ke operation details approx. 0.5 ° c increase approx. 0.5 ° c increase approx. 8 hours after sleep shift operation starts, stops automati- cally sleep operation button is pressed sleep shift operation starts temp. Setting temperature 1 hour 0 – 1 hour time approx. 8 hours a...

  • Page 28: Operation Details

    – 27 – cs-a73ke mac9509078c2 operation details 6) indoor fan speed control auto fan speed control when set to auto fan speed, the fan speed is shifted automatically between stop to shi depend on each operation as shown below. Manual fan speed control basic fan speed adjustment (3 setting, from lo to...

  • Page 29: Operation Details

    – 28 – mac9509078c2 cs-a73ke operation details fan speed lo rlo- rlo-- time 10" 4.5" 0.5" 4.5" 0.5" 4" 1" 4" 1" fan motor on on off on off on off on off * lo-- : indoor fan rotates at 6 seconds on and 4 seconds off * slo : indoor fan rotates at 4 second intervals at low speed. * rlo : random low spe...

  • Page 30: Operation Details

    – 29 – cs-a73ke mac9509078c2 operation details 11) economy mode operation purpose of this operation is to save or reduced electrical power consumption of the room air conditioner. However consumer is advised to use economy mode operation after the room temperature reaches the desired temperature. A)...

  • Page 31: Operation Details

    – 30 – mac9509078c2 cs-a73ke operation details 12) powerful mode operation purpose of this operation is to be obtain the setting temperature quickly. A) cooling and soft dry mode • when the powerful mode is set, the set temperature will be automatically decreased 3 ° c against the present setting te...

  • Page 32: Installation Information

    – 31 – mac9512086c2 cs-a73ke installation information attached accessories accessories: flaring piping kit cz-3f5, 7aen (cs/cu-a73ke, a93ke) cz-4f5, 7, 10an (cs/cu-a123ke) select the best location • there should not be any heat source or steam near the unit. • there should not be any obstacles block...

  • Page 33: Installation Information

    – 32 – mac9512086c2 cs-a73ke 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 34: 2-Way

    – 33 – mac9512086c2 cs-a73ke 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 35

    – 34 – mac9512086c2 cs-a73ke 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 36

    – 35 – mac9512086c2 cs-a73ke 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 37

    – 36 – mac9512086c2 cs-a73ke lo hi 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- ...

  • Page 38

    – 37 – mac9512086c2 cs-a73ke 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 39

    – 38 – mac9512086c2 cs-a73ke 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 40

    – 39 – mac9512086c2 cs-a73ke lo hi 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...

  • Page 41: Servicing Information

    – 40 – mac9512086c2 cs-a73ke 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 42: Servicing Information

    – 41 – mac9512086c2 cs-a73ke servicing information fig. 5 screw fan motor to install back the fan motor, please adjust the connector location. – finally remove the fan motor by removing the screw. (fig. 5) – reminder - to reinstall the fan motor, adjust the connector of the fan motor as figure 5. • ...

  • Page 43: Servicing Information

    – 42 – mac9512086c2 cs-a73ke 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 44: Troubleshooting Guide

    – 43 – mac9512086c2 cs-a73ke troubleshooting guide 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...

  • Page 45: Troubleshooting Guide

    – 44 – mac9512086c2 cs-a73ke troubleshooting guide 2. Diagnosis methods of a malfunction of a compressor and a 4-way valve nature of fault insufficient compressing of a compressor locked compressor inefficient switches of the 4-way valve symptom 1. Relationship between the condition of the air condi...

  • Page 46: Technical Data

    – 45 – mac9512086c2 cs-a73ke technical data l l l l l thermostat characteristics cs-a73ke / cs-a93ke / cs-a123ke • cooling • soft dry 16 16 (°c) thermostat setting (remote control) intake air temperature / comp. Off = set temperature / comp. On 18 28 26 24 22 20 30 18 20 22 24 26 28 30 32 34 (°c) / ...

  • Page 47: Technical Data

    – 46 – mac9512086c2 cs-a73ke technical data l l l l l operation characteristics cs-a73ke / cu-a73ke • cooling characteristic 30 32 34 36 38 40 42 44 outdoor air temperature ( ° c) [condition] room temperature: 27/19 ° c cooling operation: at high fan piping length: 7.5m 5 4 3 2 17 16 15 14 13 12 2.6...

  • Page 48: Technical Data

    – 47 – mac9512086c2 cs-a73ke technical data l l l l l operation characteristics cs-a93ke / cu-a93ke • cooling characteristic • heating characteristic 30 32 34 36 38 40 42 44 outdoor air temperature ( ° c) [condition] room temperature: 27/19 ° c cooling operation: at high fan piping length: 7.5m 5 4 ...

  • Page 49: Technical Data

    – 48 – mac9512086c2 cs-a73ke technical data l l l l l operation characteristics cs-a123ke / cu-a123ke • cooling characteristic • heating characteristic 30 32 34 36 38 40 42 44 outdoor air temperature ( ° c) [condition] room temperature: 27/19 ° c cooling operation: at high fan piping length: 7.5m 5 ...

  • Page 51: Replacement Parts List

    – 50 – mac9512086c2 cs-a73ke replacement parts list no. Description & name q’ty cs-a73ke cs-a93ke cs-a123ke remarks 1 chassy complete 1 cwd50c338 @ @ 2 particular piece 1 cwd931019 @ @ 3 fan motor 1 cwa92288 cwa92286 cwa92290 _ 4 lead wire – fan motor 1 cwa67c2097 @ @ 5 cross flow fan 1 cwh02c060 @ ...

  • Page 53: Replacement Parts List

    – 52 – mac9512086c2 cs-a73ke no. Description & name q’ty cs-a73ke cs-a93ke remarks 1 chassy ass’y 1 cwd50k438f cwd50k456d 2 fan motor bracket 1 cwd54113 @ 3 screw – fan motor bracket 4 cwh4580399 @ 4 fan motor 1 cwa95245 @ _ 5 screw – fan motor mount 3 cwh55027 @ 6 propeller fan 1 cwh00k052 @ 7 nut ...

  • Page 55: Replacement Parts List

    – 54 – mac9512086c2 cs-a73ke replacement parts list no. Description & name q’ty cu-a123ke remarks 1 chassy ass’y 1 cwd50k659a 2 fan motor bracket 1 cwd54254 3 screw – fan motor bracket 6 cwh55413 4 fan motor 1 cwa95381 _ 5 screw – fan motor mount 4 cwh55252 6 compressor 1 2ks224d5ca02 _ 7 anti – vib...

  • Page 56: Electronic Parts List

    – 55 – mac9512086c2 cs-a73ke electronic parts list printed in malaysia p990103000ct macc symbol description & name part no. Bz1 sound generator a48040 ct1 transformer a40322 d1 diode a541sr154–4 d2 diode a54rb501v–40 d3 diode a541ss355t db1 doide a54cs1vb20e fuse fuse xba2c20tr0 fuse holder fuse hol...

  • Page 57

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 g f e d c b a fig. 2 fig. 1 cs-a73k/a93k/a123k cs-a73k/a93k/a123k electronic circuit diagram • cs-a73ke / cu-a73ke • cs-a93ke / cu-a93ke • cs-a123ke / cu-a123ke cs-a73k/a93k/a123k cs-a73k/a93k/a123k fig. 3 olp characteristics (compressor) 3 20 40 60 80...

  • Page 58

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 g f e d c b a 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 contro...