Panasonic CS-A181KE Service Manual

Manual is about: Room Air Conditioners

Summary of CS-A181KE

  • Page 1

    Service manual room air conditioners contents ● features .......................................................... 1 ● functions ................................................... 2 – 4 ● product specifications ............................... 5 – 8 ● dimensions .......................................

  • Page 2: Features

    – 1 – mac9512086c2 cs-a181ke 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. P...

  • Page 3: Functions

    – 2 – mac9512086c2 cs-a181ke remote control functions operation off / on off / on i room temperature setting temp. • temperature setting (16˚c to 30˚c) • automatic operation m / n 2˚c lower than standard n standard n - o 2˚c higher than standard operation mode selection • auto automatic operation mo...

  • Page 4: Functions

    – 3 – mac9512086c2 cs-a181ke indoor unit functions power switch off / on power i auto restart control • operation is restarted after power failure at previous setting mode. Anti-freezing control • anti-freezing control for indoor heat exchanger. (cooling and soft dry) sleep mode auto control • indoo...

  • Page 5: Functions

    – 4 – mac9512086c2 cs-a181ke outdoor unit functions 4-way valve control • when the unit is switched to "off" during heating operation, 4-way valve stays at heating position for 5 minutes. 60 secs. Forced operation control • once the compressor is activated, it does not stop for 60 secs. (stops immed...

  • Page 6: Product Specifications

    – 5 – mac9512086c2 cs-a181ke unit kw btu/h 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) kw a w/w a inch inch inch inch mm m m inch (mm) inch (mm) inch (mm) lb (kg) kw w w rpm rpm rpm height width depth type motor type rated outpu...

  • Page 7: Product Specifications

    – 6 – mac9512086c2 cs-a181ke product specifications length flow rate inner diameter material style heat exchanger refrigerant control device refrigeration oil refrigerant (r-22) thermostat protection device capillary tube air filter compressor capacitor fan motor capacitor description tube material ...

  • Page 8: Product Specifications

    – 7 – mac9512086c2 cs-a181ke height width depth type motor type rated output type material motor type input rated output fan low speed medium high unit kw btu/h 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) kw a w/w a inch inch in...

  • Page 9: Product Specifications

    – 8 – mac9512086c2 cs-a181ke product specifications length flow rate inner diameter material style heat exchanger refrigerant control device refrigeration oil refrigerant (r-22) thermostat protection device capillary tube air filter compressor capacitor fan motor capacitor unit mm (cm 3 ) g (oz) mm ...

  • Page 10: Dimensions

    – 9 – mac9512086c2 cs-a181ke dimensions cs-a181k / cs-a241k relative position between the indoor unit and the installation plate 57 142 16 remote control transmitter unit : mm 55 approx. 706 gas side liquid side installation plate hooks drain ports 980 290 195 59 direction air intake air outlet dire...

  • Page 11: Refrigeration Cycle Diagram

    – 10 – mac9512086c2 cs-a181ke refrigeration cycle diagram cs/cu-a181k cs/cu-a241k dimensions cu-a181k / cu-a241k 75 77.5 130 130 540 663 685 330 370 56.3 800 300 35 air intake direction air outlet direction slots (12 x 17) four places 3-way valve at liquid side 3-way valve at gas side 22 106.5 100cm...

  • Page 12: Block Diagram

    – 11 – mac9512086c2 cs-a181ke cs-a181ke / cu-a181ke cs-a241ke / cu-a241ke block diagram power switch indoor unit outdoor unit single phase 240-220v 50hz (113 ° c) thermal fuse 2 2 1 1 wireless remote control transmitter l h c znr ry-pwr ry-hot electronic controller 4 4 3 3 transformer2 fuse 3.15a fu...

  • Page 13: Wiring Diagram

    – 12 – mac9512086c2 cs-a181ke fan motor capacitor 6 5 4 (pipe temp.) sensor sensor (air temp.) pnk ylw org red brw cn-stm cn-th (ylm) 1 32 4 motor thermal fuse (102 ° c) ylw/grn 2 1 ac(wht) fuse (3.15a) l p cn-mtr (grn) ylw red blu motor fan 1 auto sw down sw pump power supply cord controller electr...

  • Page 14: Operation Details

    – 13 – mac9512086c2 cs-a181ke operation details 1) cooling mode operation cooling in operation according to remote control setting. • when the compressor is stopped by power switch, remote control or there is a power failure, it restarts after 3 minutes when the power switch, remote control is turne...

  • Page 15: Operation Details

    – 14 – mac9512086c2 cs-a181ke 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 16: Operation Details

    – 15 – mac9512086c2 cs-a181ke 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 operates with slo s...

  • Page 17: Operation Details

    – 16 – mac9512086c2 cs-a181ke 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 com...

  • Page 18: Operation Details

    – 17 – mac9512086c2 cs-a181ke operation details 3) heating mode operation • heating in operation according to remote control setting. Time delay safety control • when the compressor is stopped by power switch, remote control or there is a power failure, it restarts after 3 minutes when the power swi...

  • Page 19: Operation Details

    – 18 – mac9512086c2 cs-a181ke 42 ° c 34 ° c 32 ° c 30 ° c off on 1' 1' 30" 30" 30" 120" 30" 120" basic time indoor heat exchanger temp. Intake temp. Slo slo slo lo- lo- lo- lo- lo- lo- lo- slo compressor 4-way valve indoor fan outdoor fan operation led 2 way valve (a241k) max 4' a b c d e f g h i j ...

  • Page 20: Operation Details

    – 19 – mac9512086c2 cs-a181ke operation details deicing control deice starts to prevent frosting at outdoor heat exchanger. • normal deicing deice operation detection commences in heating operation starts or 60 minutes after previous deice operation. If the outdoor piping temperature drops to –4°c o...

  • Page 21: Operation Details

    – 20 – mac9512086c2 cs-a181ke operation details b) overload deicing time diagram cooling mode soft dry mode heating mode setting temperature (standard) 27°c 24°c 23°c cooling mode soft dry mode heating mode cooling mode soft dry mode heating mode ↑ intake air temperature 23°c 20°c setting temperatur...

  • Page 22: Operation Details

    – 21 – mac9512086c2 cs-a181ke operation details 5) sleep mode auto operation cooling or soft dry operation when you press the sleep mode, the following movement will start to avoid overcooling. • the fan speed refer to indoor fan motor control. • the setting temperature will be risen by 0.5°c at the...

  • Page 23: Operation Details

    – 22 – mac9512086c2 cs-a181ke operation details * the left and right airflow direction louvers can be adjusted manually. Lower limit for cooling mode and soft dry mode lower limit for heating mode • when set a airflow direction auto-control with remote control, the louver swings up and down as shown...

  • Page 24: Installation Information

    – 23 – mac9602008c3 cs-a181ke installation information attached accessories accessories: flaring piping kit cz-4f5, 7, 10an (a181k) cz-52f5, 7, 10an (a241k) select the best location • there should not be any heat source or steam near the unit. • there should not be any obstacles blocking the air cir...

  • Page 25: Installation Information

    – 24 – mac9602008c3 cs-a181ke installation information indoor / outdoor unit installation diagram length of power supply cord piping direction attention not to bend up drain hose about 1 m about 2 m right rear right bottom left rear left bottom left (front side) right installation parts you must pur...

  • Page 26: 3-Way Valve

    – 25 – mac9602008c3 cs-a181ke 3-way valve shaft position closed (with valve cap) closed (clockwise) open (with valve cap) open (counter-clockwise) open (counter-clockwise) open (counter-clockwise) open (counter-clockwise) open (counter-clockwise) service port closed (with cap) open (connected manifo...

  • Page 27

    – 26 – mac9602008c3 cs-a181ke service port cap be sure, using a torque wrench to tighten the service port cap (after using the service port), so that it prevents the gas leakage from the refrigeration cycle. Procedure: (1) connect a charging hose with a push pin to the low and high sides of a chargi...

  • Page 28

    – 27 – mac9602008c3 cs-a181ke 2 pumping down procedure: (1) confirm that both the 3-way valves are set to the open position. ● remove the valve stem caps and confirm that the valve stems are in the open position. ● be sure to use a hexagonal wrench to operate the valve stems. (2) operate the unit fo...

  • Page 29

    – 28 – mac9602008c3 cs-a181ke 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 remains in the indoor unit and refrigeration pipes, it will affect the compressor, reduce to cooling ca...

  • Page 30

    – 29 – mac9602008c3 cs-a181ke 4 balance refrigerant of the 3-way valves (lack of refrigerant in the refrigeration cycle) open procedure: (1) confirm that both the 3-way valves are set to the opened position. (2) connect the charge set to the 3-way valve’s service port. ● leave the valve on the charg...

  • Page 31

    – 30 – mac9602008c3 cs-a181ke (liquid side) vacuum pump (gas side) 3-way valve 3-way valve (indoor unit) (outdoor unit) open open 5 evacuation (no refrigerant in the refrigeration cycle) procedure: (1) connect the vacuum pump to the charge set’s centre hose. (2) turn on the vaccuum pump to evacuate ...

  • Page 32

    – 31 – mac9602008c3 cs-a181ke 6 gas charging (after evacuation) procedure: (1) connect the charge hose to the charging cylinder. ● connect the charge hose which was 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 33: Servicing Information

    – 32 – mac9512086c2 cs-a181ke servicing information (a) disassembly of the parts (indoor unit) ● inspection points for the indoor electronic controller 1. The electronic controller, a signal receiver and an indicator can be seen by removing the front grille and control board cover, as shown in the f...

  • Page 34: Servicing Information

    – 33 – mac9512086c2 cs-a181ke servicing information 3. Remove the discharge grille. Remove the discharge grille and then pull the dis- charge grille in a down and forward direction. 4. Remove the indoor fan motor loosen the fan mounting screw at the junction with cross flow fan. Remove the screw tha...

  • Page 35: Servicing Information

    – 34 – mac9512086c2 cs-a181ke servicing information ● cross flow fan removal procedure 1. Remove the fan mounting screws and bearing. (refer to no. 4 of indoor fan motor the removal procedure) 2. Loosen the 2 screws mounted at the left side of the evaporator. 3. Pull the left side of the evaporator ...

  • Page 36: Servicing Information

    – 35 – mac9512086c2 cs-a181ke servicing information (c) remote control transmission setting • remote control reset 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...

  • Page 37: Troubleshooting Guide

    – 36 – mac9512086c2 cs-a181ke 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 38: Troubleshooting Guide

    – 37 – mac9512086c2 cs-a181ke 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 conditioner and pressure a...

  • Page 39: Technical Data

    – 38 – mac9512086c2 cs-a181ke technical data l l l l l thermostat characteristics cs-a181k / cs-a241k • cooling • soft dry • heating 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 40: Technical Data

    – 39 – mac9512086c2 cs-a181ke technical data l l l l l operation characteristics cs-a181k / cu-a181k • piping length characteristic (cooling) • cooling characteristic • heating characteristic • piping length characteristic (heating) piping length (m) 5 25 15 20 10 12.0 11.0 10.0 9.0 14.0 13.5 13.0 0...

  • Page 41: Technical Data

    – 40 – mac9512086c2 cs-a181ke technical data l l l l l operation characteristics cs-a241k / cu-a241k • piping length characteristic (colling) • cooling characteristic 30 32 34 36 38 40 42 44 outdoor room temperature ( ° c) [condition] room temperature: 27/19 ° c cooling operation: high fan piping le...

  • Page 43: Replacement Parts List

    – 42 – mac9512086c2 cs-a181ke replacement parts list description & name chassy complete chassy back cover fan motor cross flow fan complete screw – cross flow fan bearing ass’y evaporator flare nut (1/4") flare nut (1/2") or (5/8") discharge grille complete motor – air swing tap – drain tray vane co...

  • Page 45: Replacement Parts List

    – 44 – mac9512086c2 cs-a181ke replacement parts list qty 1 1 1 6 1 1 1 4 3 1 1 1 2 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 cu-a241ke ← ← ← ← ← ← cwa92295 ← ← ← ← 2js464d3aa02 ← ← ← cwb32c345 cwh35114b ← ← cwb01430 cwb00k029 cwb13k047 cwb16k031 ← cwt01c672 ← ← ...

  • Page 46: Electronic Parts List

    – 45 – mac9512086c2 cs-a181ke electronic parts list part no. A52d011w211 a52c096 a52c050 (a52mpc78m05h) a52mpa2003c a52br9020 a52mpc393c a52bx8315 a52lp620-g4 a55c130 (a55c4300m + a58203) a55d2220qta a55un4211ta a55c1740stpq a55c1741astr a55un411fta a52c071 a52c070 a54d3sba60f1 a54cs1vb20e (a54s1vb2...

  • Page 47: Electronic Parts List

    – 46 – mac9512086c2 cs-a181ke electronic parts list electronic controller : cwa741314 (cu-a181ke) electronic controller : cwa741315 (cu-a241ke) part no. A52c78414y a52c094 (a52an78m12 + a58086) a52c040 (a52an78n05) a52mpa2003c a55c1740stpq a55dtc113zst a54ma165ta5 a54cs1vb20e (a54s1vb20) a54d7.5el1t...

  • Page 48

    Cs-a181k/a241k cs-a181k/a241k electronic circuit diagram • cs-a181k / cu-a181k series • cs-a241k / cu-a241k series 0 10 20 30 40 50 60 70 0 10 20 30 40 50 -10 senser (thermistor) characteristics resistance (k ) temperature ( ° c) 1 2 intake air temp. Sensor pipe temp. Sensor 1 2 fig. 1 fig. 2 outdoo...

  • Page 49

    Print pattern indoor unit printed circuit board 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 indoor fan step change after deice ended 4-way valve off on cooling s...

  • Page 50

    Printed in malaysia p990102500yw macc untitled-5 6/21/00, 10:48 am 2.