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Panasonic CS-C181KE Service Manual
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 – 8
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Dimensions .............................................. 9 – 10
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Refrigeration Cycle Diagram ......................... 10
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Block Diagram ............................................... 11
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Wiring Diagram .............................................. 12
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Operation Details ................................... 13 – 19
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Installation Information .......................... 20 – 21
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3-way Valves ......................................... 22 – 28
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Servicing Information ............................. 29 – 32
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Troubleshooting Guide .......................... 33 – 34
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Technical Data ....................................... 35 – 36
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Exploded View ......................................... 37, 39
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Replacement Parts List ........................... 38, 40
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Electronic Parts List ....................................... 41
CS-C181KE / CU-C181KE
CS-C241KE / CU-C241KE
ORDER NO. MAC9806008C2
1998 Matsushita Air-Conditioning Corp. Sdn. Bhd.
(183914D)
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
Untitled-8
6/19/00, 5:34 PM
1
Summary of CS-C181KE
Page 1
Service manual room air conditioners contents ● features .......................................................... 1 ● functions ................................................... 2 – 4 ● product specifications ............................... 5 – 8 ● dimensions .......................................
Page 2: Features
– 1 – mac9512086c2 cs-c181ke 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-c181ke 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-c181ke indoor unit functions power switch off / on power i temporary operation switch • used when the remote control cannot be used. Remote control signal receiving sound control • it can be controlled by pressing temporary operation switch for 10 seconds. Auto off / on operati...
Page 5: Functions
– 4 – mac9512086c2 cs-c181ke outdoor unit functions overload protector • inner protector 60 secs. Forced operation control • once the compressor is activated, it does not stop for 60 secs. (stops immediately with remote control stop signal.) outdoor fan operation control • 4-pole induction motor (2-...
Page 6: Product Specifications
– 5 – mac9512086c2 cs-c181ke 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 co...
Page 7: Product Specifications
– 6 – mac9512086c2 cs-c181ke (plate fin configuration, forced draft) capillary tube product specifications µf, vac µf, vac length flow rate inner diameter material style • specifications are subject to change without notice for further improvement. Heat exchanger refrigerant control device refrigera...
Page 8: Product Specifications
– 7 – mac9512086c2 cs-c181ke 6.65 - 6.60 22,700 - 22,500 3.8 8.0 single 240 - 220 50 2,890 - 2,750 14.4 - 13.4 2.30 - 2.40 66 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 (...
Page 9: Product Specifications
– 8 – mac9512086c2 cs-c181ke 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 / st...
Page 10: Dimensions
– 9 – mac9512086c2 cs-c181ke dimensions cs-c181k / cs-c241k relative position between the indoor unit and the installation plate 57 142 16 remote control transmitter 980 290 195 59 direction air intake air outlet direction left piping hole right piping hole 6 lower piping hole 52 60 165 2,100 approx...
Page 11: Refrigeration Cycle Diagram
– 10 – mac9512086c2 cs-c181ke refrigeration cycle diagram cs/cu-c181k cs/cu-c241k thermostat process tube strainer liquid side gas side 3-way valve 3-way valve indoor unit outdoor unit heat exchanger (evaporator) sensor intake temp. Sensor pipe temp. Capillary tube capillary tube compressor oil sepa...
Page 12: Block Diagram
– 11 – mac9512086c2 cs-c181ke cs-c181ke / cu-c181ke cs-c241ke / cu-c241ke block diagram 2 2 1 1 6c "c" fuse 3.15a ry-c receiver & p.C.B. Single phase ac 220-240v 50hz ry-h trans- former thermal fuse (113°c) (102°c) fuse thermal znr1 fan motor power switch electronic controller indicates the electron...
Page 13: Wiring Diagram
– 12 – mac9512086c2 cs-c181ke 2 1 1 2 terminal indoor unit terminal outdoor unit cn-disp(wht) main sw motor cn-stm(grn) cn-th(yel) 1 2 3 4 5 4321 (air temp.) sensor (yel) red blue compressor terminal trade mark wht wht wht yel/grn blu brw power supply cord control remote wireless controller electron...
Page 14: Operation Details
– 13 – mac9512086c2 cs-c181ke 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-c181ke 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 a b c d e f g h i j k l m n o p q r s t u v w ...
Page 16: Operation Details
– 15 – mac9512086c2 cs-c181ke 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 st...
Page 17: Operation Details
– 16 – mac9512086c2 cs-c181ke 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 basic time compressor indoor fan outdoor fan operation led 1’ 1’ 1’ 6’ 6’ 6’ 6’ 4’ 1’ cooling on cooling off soft dry on soft dry off, on 1.5°c 1.0°c slo slo slo slo slo slo sl...
Page 18: Operation Details
– 17 – mac9512086c2 cs-c181ke 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 c...
Page 19: Operation Details
– 18 – mac9512086c2 cs-c181ke operation details 5) sleep mode auto operation cooling or soft dry operation 6) auto restart control • if there is a power failure, operation will be automatically restarted when the power is resumed. It will start with previous operation mode and airflow direction. (ti...
Page 20: Operation Details
– 19 – mac9512086c2 cs-c181ke 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 air circulation mode • when set a airflow direction auto-control with remote control, the louver swings up and down ...
Page 21: Installation Information
– 20 – mac9512086c2 cs-c181ke no. 1 2 3 4 5 accessories part installation plate installation plate fixing screw vinyl tape vinyl tape band indoor unit outdoor unit model c181k c241k piping size gas 1/2" 5/8" liquid 1/4" 1/4" qty. 1 6 3 1 2 rated if the unit will be installed at a 12m distance, the q...
Page 22: Installation Information
– 21 – mac9512086c2 cs-c181ke 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 23: 3-Way Valve
– 22 – mac9602008c3 cs-c181ke 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 24
– 23 – mac9602008c3 cs-c181ke 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 25
– 24 – mac9602008c3 cs-c181ke 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 26
– 25 – mac9602008c3 cs-c181ke 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 27
– 26 – mac9602008c3 cs-c181ke 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 28
– 27 – mac9602008c3 cs-c181ke (liquid side) vacuum pump (gas side) 3-way valve 3-way valve (indoor unit) (outdoor unit) open open 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...
Page 29
– 28 – mac9602008c3 cs-c181ke 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 30: Servicing Information
– 29 – mac9512086c2 cs-c181ke servicing information (a) disassembly of the parts ● 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 fig. 1. ● indoo...
Page 31: Servicing Information
– 30 – mac9512086c2 cs-c181ke servicing information 3. Remove the discharge grille. Remove the discharge grille by taking off the 3 screws that hold the discharge grille and then pull the discharge grille in a down and forward direction. 4. Remove the indoor fan motor loosen the fan mounting screw a...
Page 32: Servicing Information
– 31 – mac9512086c2 cs-c181ke 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 33: Servicing Information
– 32 – mac9512086c2 cs-c181ke servicing information (b) 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 34: Troubleshooting Guide
– 33 – mac9512086c2 cs-c181ke 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 or a fan....
Page 35: Troubleshooting Guide
– 34 – mac9512086c2 cs-c181ke 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 cond...
Page 36: Technical Data
– 35 – mac9512086c2 cs-c181ke technical data l l l l l thermostat characteristics cs-c181k / cs-c241k • cooling • soft dry / cooling on / / diff. 1.5°c 16 16 (°c) intake air temperature / soft dry off, soft dry on / diff. 1.0°c thermostat setting (remote control) 34 24 22 20 18 28 26 30 32 18 20 22 ...
Page 37: Technical Data
– 36 – mac9512086c2 cs-c181ke technical data l l l l l operation characteristics cs-c181k / cu-c181k • piping length characteristic • cooling characteristic piping length (m) 5 25 15 20 10 12 11 10 9 13 12.5 12 11.5 11 4.5 4.4 4.3 4.2 4.1 6.0 5.5 5.0 4.5 4.0 220v 240v i: q: current (a) - cooling cap...
Page 39: Replacement Parts List
– 38 – mac9512086c2 cs-c181ke 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 41: Replacement Parts List
– 40 – mac9512086c2 cs-c181ke replacement parts list qty 1 1 1 6 1 1 1 1 1 1 1 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 2 1 1 1 1 1 1 cu-c241ke ← ← ← ← ← ← cwa92271 cwh31043 ← 2js464d3aa02 ← ← ← cwb32c286 cwh35114b ← cwb01463 cwt02532 cwb01430 ← ← ← cwa31720 cwa31649 cwh30071 ← ← ← ← ← ← ← ...
Page 42: Electronic Parts List
– 41 – mac9512086c2 cs-c181ke part no. A54ra15–01v3 a54cs1vb20e a54d7.5el1tb a54c352 a55c1741astr a55dtc114est a55dtc143xst a55c1740stpq a52d0001w015 a52c040 a52mpa2003c a52br9020 a52c094 a43036 a56w2deh1–5 a59014 a01059 a04042 a00106 a00160 xba2c31tr0 a16c204 a45st8.0mtwt a48039 a31698 description ...
Page 43
1 a b c d e f g 2 3 4 5 6 7 8 9 10 11 12 13 14 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 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 p20 p21 p22 p23 p24 p25 p26 p27 p30 p31 p32 p33 p34 p35 p36 p37 p40 p4...
Page 44
Cs-c181k/c241k cs-c181k/c241k 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 comp./fan motor delay timer intake air ...
Page 45
Printed in malaysia p980702500yw macc untitled-8 6/19/00, 5:34 pm 2.