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Panasonic CS-E12RKUAW Service Manual

Other manuals for CS-E12RKUAW: Operating Instructions Manual

Summary of CS-E12RKUAW

  • Page 1

    © panasonic corporation 2015. Order no: papamy1501049ce indoor unit outdoor unit cs-e9rkuaw cs-e12rkuaw cs-e18rkuaw cs-e24rkuaw cu-e9rkua cu-e12rkua cu-e18rkua cu-e24rkua destination usa canada please file and use this manual together with the service manual for model no. Cu-2e18nbu and cu-5e36qbu, ...

  • Page 2: Table of Contents

    2 table of contents 1. Safety precautions ............................................. 3 2. Specification ....................................................... 5 3. Features ............................................................. 11 4. Location of controls and components .......... 12 4.1 i...

  • Page 3: 1. Safety Precautions

    3 caution warning warning 1. Safety precautions  read the following “safety precautions” carefully before perform any servicing.  electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. ...

  • Page 4

    4 caution warning 19. During installation, install the refrigerant piping properly before run the compressor. (operation of compressor without fixing refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, ...

  • Page 5: 2. Specification

    5 2. Specification model indoor cs-e9rkuaw cs-e12rkuaw outdoor cu-e9rkua cu-e12rkua performance test condition ari ari power supply phase, hz single, 60 single, 60 v 208 230 208 230 min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Cooling capacity kw 1.20 2.64 3.00 1.20 2.64 3.00 1.20 3.3...

  • Page 6

    6 model indoor cs-e9rkuaw cs-e12rkuaw outdoor cu-e9rkua cu-e12rkua outdoo r fa n type propeller propeller material pp pp motor type dc (8 poles) dc (8 poles) input power w - - output power w 40 40 speed hi rpm c: 830 h: 780 c: 830 h: 820 moisture removal l/h (pt/h) 0.6 (1.3) 0.8 (1.7) indoor airflow...

  • Page 7

    7 model indoor cs-e9rkuaw cs-e12rkuaw outdoor cu-e9rkua cu-e12rkua dry bulb wet bulb dry bulb wet bulb indoor operation range (cooling) (°f / °c) maximum 89.6 / 32 73.4 / 23 89.6 / 32 73.4 / 23 minimum 60.8 / 16 51.8 / 11 60.8 / 16 51.8 / 11 outdoor operation range (cooling) (°f / °c) maximum 114.8 ...

  • Page 8

    8 model indoor cs-e18rkuaw cs-e24rkuaw outdoor cu-e18rkua cu-e24rkua performance test condition ari ari power supply phase, hz single, 60 single, 60 v 208 230 208 230 min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Cooling capacity kw 1.70 5.04 5.80 1.70 5.04 5.80 1.70 7.02 8.00 1.70 7.0...

  • Page 9

    9 model indoor cs-e18rkuaw cs-e24rkuaw outdoor cu-e18rkua cu-e24rkua outdoo r fa n type propeller propeller material pp pp motor type dc motor (8 poles) dc motor (8 poles) input power w - - output power w 60 60 speed hi rpm cooling: 700 heating: 700 cooling: 730 heating: 750 moisture removal l/h (pt...

  • Page 10

    10 model indoor cs-e18rkuaw cs-e24rkuaw outdoor cu-e18rkua cu-e24rkua dry bulb wet bulb dry bulb wet bulb indoor operation range (cooling) (°f / °c) maximum 89.6 / 32 73.4 / 23 89.6 / 32 73.4 / 23 minimum 60.8 / 16 51.8 / 11 60.8 / 16 51.8 / 11 outdoor operation range (cooling) (°f / °c) maximum 114...

  • Page 11: 3. Features

    11 3. Features  inverter technology o wider output power range o energy saving o quick cooling o more precise temperature control  environment protection o non-ozone depletion substances refrigerant (r410a)  long installation piping o cs/cu-e9/12rk, long piping up to 65 feet (20 meters) o cs/cu-e...

  • Page 12

    12 4. Location of controls and components 4.1 indoor unit 4.2 outdoor unit 4.3 remote control power timer econav i auto co mfort powerfu l quiet horizontal airflow direction louver • manually adjustable (e9rk and e12rk). • do not adjust by hand (e18rk and e24rk). Aluminium fin auto off/on button air...

  • Page 13: 5. Dimensions

    13 5. Dimensions 5.1 indoor unit 5.1.1 cs-e9rkuaw cs-e12rkuaw 7/8 1-7/8 5-1/ 4 remote control remote control holder 2 2- 3/ 8 a uto co mfo rt m o d e pow erful/ q uiet t e m p o f f / o n t i m e r s e t c a n c e l o n o f f 1 2 3 air sw ing fan speed set check clock reset ac rc e c o na v i f a n ...

  • Page 14

    14 5.1.2 cs-e18rkuaw cs-e24rkuaw 7/8 1-7/8 5-1 /4 remote control remote control holder 2 2- 3/8 a uto co mfort m o d e pow erful/ qu iet t e m p o f f / o n t i m e r s e t c a n c e l o n o f f 1 2 3 fan speed set check clock reset ac rc ec o na v i a u t o h e a t c o o l d r y f a n f a n sp e e ...

  • Page 15

    15 5.2 outdoor unit 5.2.1 cu-e9rkua cu-e12rkua 5.2.2 cu-e18rkua cu-e24rkua unit : inch 30-23/32 1 2-5/8 1/2 21 -9 /3 2 (3 /4 ) (2 -3 /4 ) (2 -3 /8 ) 11-13/32 1- 3/ 8 6- 1/ 8 3- 3/ 8 22-1/2 (4-1/8) 4-1/8 2-3/8 2-way valve at liquid side (high pressure) 3-way valve at gas side (low pressure) space nec...

  • Page 16

    16 6. Refrigeration cycle diagram 6.1 cu-e9rkua cu-e12rkua indoor outdoor intake temp. Sensor pipe temp. Sensor intake temp. Sensor pipe temp. Sensor liquid side 2-way valve 3-way valve gas side cooling heat exchanger (evaporator) heat exchanger (condenser) heating compressor compressor temp. Sensor...

  • Page 17

    17 6.2 cu-e18rkua cu-e24rkua indoor outdoor intake temp. Sensor pipe temp. Sensor 1 pipe temp. Sensor 2 intake temp. Sensor pipe temp. Sensor liquid side 2-way valve 3-way valve gas side cooling heat exchanger (evaporator) heat exchanger (condenser) heating compressor compressor disc. Sensor 4-way v...

  • Page 18: 7. Block Diagram

    18 7. Block diagram 7.1 cs-e9rkuaw cu-e9rkua cs-e12rkuaw cu-e12rkua.

  • Page 19

    19 7.2 cs-e18rkuaw cu-e18rkua cs-e24rkuaw cu-e24rkua.

  • Page 20

    20 8. Wiring connection diagram 8.1 indoor unit 8.1.1 cs-e9rkuaw cs-e12rkuaw m rectification circuit communication circuit grounding terminal 1 w 2 3 bl evaporator ac303 (wht) ac306 (blk) ac304 (red) g301 (grn) fuse301 t3.15a l250v noise filter circuit temp. Fuse 102°c (3a) to outdoor unit terminal ...

  • Page 21

    21 8.1.2 cs-e18rkuaw cs-e24rkuaw m rectification circuit communication circuit 1 w 2 3 bl ac303 (wht) ac306 (blk) ac304 (red) g301 (grn) fuse301 t3.15a l250v noise filter circuit temp. Fuse 102°c (3a) terminal board r auto sw (sw01) electronic controller (main) cn–fm (wht) fan motor 5 6 7 1 4 bl w b...

  • Page 22

    22 8.2 outdoor unit 8.2.1 cu-e9rkua cu-e12rkua 5rs 102x ha 21 1. 741 1. 765 1. 71 1 co nne c t io n resi st an ce o f co m p re ssor w indi n g s u- v u-w v- w l1 l2 1 (bl ack) 2 (b lack ) 3 (r ed) termin al board gr n gr n grn blk blk wh t wh t r ed toi n door u n it pow ers u ppl y da ta (r ed ) r...

  • Page 23

    23 8.2.2 cu-e18rkua cu-e24rkua n o is e f il te r ci rc ui t commun ica ti on ci rcui t r e c t ific at io n ci rc ui t r e c t if ic a t io n c irc ui t pf c c irc ui t sw it chi ng po w e r s u ppl y c ir cui t el ec tr oni c c o n t r o ll er (n o ise fil t er ) pi p ing t e mp . Sen sor (t he rm...

  • Page 24

    24 9. Electronic circuit diagram 9.1 indoor unit 9.1.1 cs-e9rkuaw cs-e12rkuaw bz201 bz 5v_ r209 47 ic201 c202 0.01u c201 47u r218 0 c e jp201 r210 jp200 r211 jp203 r212 jp204 powerful/quiet (orange/green) 1 3 2 led205 r207 620 sen201 pcb3 r216 0 r206 2.7k r217 0 b c e q202 q201 4.7k 10k r213 r208 gn...

  • Page 25

    25 9.1.2 cs-e18rkuaw cs-e24rkuaw bz201 bz 5v_ r209 47 ic201 c202 0.01u c201 47u r218 0 c e jp201 r210 jp200 r211 jp203 r212 jp204 powerful/quiet (orange/green) 1 3 2 led205 r207 620 sen201 pcb3 r216 0 r206 2.7k r217 0 b c e q202 q201 4.7k 10k r213 r208 gnd-a + 1 2 3 vout vcc gnd gnd gnd 4 5 5v_ 5v_ ...

  • Page 26

    26 9.2 outdoor unit 9.2.1 cu-e9rkua cu-e12rkua l1 l2 1 (b la ck ) 2 (b la ck ) 3 (red ) te rm ina l bo ar d gr n gr n gr n bl k blk wh t wh t r ed to in do o r u nit powe r sup pl y da ta (r ed ) gr y g r y r eac to r ra t2 (g r y) fuse 102 t3. 15a l250 v ra t1 (gr y) 12 3 4 56 el ec tr oni c -m ag ...

  • Page 27

    27 9.2.2 cu-e18rkua cu-e24rkua n o is e f il t e r ci rcu it co mm uni ca ti on ci rc u it r e c t if ic a t io n ci rc ui t r e c t if ic a t io n ci rcui t pfc ci rcui t sw itchi ng po w e r sup p ly ci rcui t elec tr o n ic c o n t r o ller (n o is e f il t e r ) pi pi ng t e mp . Se ns o r (t he...

  • Page 28: 10.  Printed Circuit Board

    28 10. Printed circuit board 10.1 indoor unit 10.1.1 main printed circuit board 10.1.2 indicator printed circuit board cn-rmt cn-fm cn-stm2 (e18/24rkuaw only) cn-stm1 cn-msens cn-th jp1 (random auto restart enable/disable) cn-disp cn-disp.

  • Page 29

    29 10.1.3 comparator printed circuit board cn-sens1 cn-sens2 cn-msens.

  • Page 30

    30 10.2 outdoor unit 10.2.1 main printed circuit board 10.2.1.1 cu-e9rkua cu-e12rkua cn-dcfm fg1 cn-stm cn4 cn5 cn-tank cn-th cn-hot current transformer (ct) data ac-wht ac-blk power transistor (ipm).

  • Page 31

    31 10.2.1.2 cu-e18rkua cu-e24rkua cn-s cn-com cn-th1 cn-ev cn-dis cn-ht cn-hot ac-blk ac-wht power transistor (ipm) current transformer (ct) dc-fmg dc-fm1 cn-fm1.

  • Page 32

    32 10.2.2 noise filter printed circuit board 10.2.2.1 cu-e18rkua cu-e24rkua.

  • Page 33

    33 11. Installation instruction (e9rk and e12rk) 11.1 select the best location 11.1.1 indoor unit  do not install the unit in excessive oil fume area such as kitchen, workshop and etc.  there should not be any heat source or steam near the unit.  there should not be any obstacles blocking the air...

  • Page 34

    34 11.2 indoor unit 11.2.1 how to fix installation plate the mounting wall shall be strong and solid enough to prevent it from the vibration. The center of installation plate should be at more than  at right and left of the wall. The distance from installation plate edge to ceiling should more than...

  • Page 35

    35 11.2.3 indoor unit installation 11.2.3.1 for the right rear piping 11.2.3.2 for the right bottom piping 11.2.3.3 for the embedded piping (this can be used for left rear piping and bottom piping also.) do not turn over the unit without it’s shock absorber during pull out the piping. It may cause i...

  • Page 36

    36 11.2.4 connect the cable to the indoor unit 1. The inside and outside connection cable can be connected without removing the front grille. 2. Unscrew the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassis. 3. Connection cable between indoor ...

  • Page 37

    37 11.2.5 wiring stripping and connecting requirement 11.2.5.1 cutting and flaring the piping 1 please cut using pipe cutter and then remove the burrs. 2 remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering...

  • Page 38

    38 11.3 outdoor unit 11.3.1 install the outdoor unit  after selecting the best location, start installation according to indoor/outdoor unit installation diagram. 1 fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø13/32" (ø10 mm)). 2 when installing at roof, please cons...

  • Page 39

    39 11.3.2.3 connecting the piping to outdoor multi decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the specified...

  • Page 40

    40 11.3.3.1 connect the cable to the outdoor unit 1. Remove top panel. 2. Remove control board cover (resin and metal). 3. Remove plugs. 4. Fix the conduit connectors to the knockout holes with lock-nuts, then secure them against the side panel. 5. All wires pass through conduits. 6. Connection cabl...

  • Page 41

    41 12. Installation instruction (e18rk and e24rk) 12.1 select the best location 12.1.1 indoor unit  do not install the unit in excessive oil fume area such as kitchen, workshop and etc.  there should not be any heat source or steam near the unit.  there should not be any obstacles blocking the ai...

  • Page 42

    42 12.2 indoor unit 12.2.1 how to fix installation plate the mounting wall shall be strong and solid enough to prevent it from the vibration. The center of installation plate should be at more than  at right and left of the wall. The distance from installation plate edge to ceiling should more than...

  • Page 43

    43 12.2.3 indoor unit installation 12.2.3.1 for the right rear piping 12.2.3.2 for the right bottom piping 12.2.3.3 for the embedded piping (this can be used for left rear piping and bottom piping also.) do not turn over the unit without it’s shock absorber during pull out the piping. It may cause i...

  • Page 44

    44 12.2.4 connect the cable to the indoor unit 1. The inside and outside connection cable can be connected without removing the front grille. 2. Unscrew the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassis. 3. Connecting wire between indoor u...

  • Page 45

    45 12.2.5 wiring stripping and connecting requirement 12.2.5.1 cutting and flaring the piping 1 please cut using pipe cutter and then remove the burrs. 2 remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering...

  • Page 46

    46 12.3 outdoor unit 12.3.1 install the outdoor unit  after selecting the best location, start installation according to indoor/outdoor unit installation diagram. 1 fix the unit on concrete or rigid frame firmly and horizontally by bolt nut ø13/32" (ø10 mm). 2 when installing at roof, please consid...

  • Page 47

    47 12.3.2.3 connecting the piping to outdoor multi decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the specified...

  • Page 48

    48 12.3.3.1 connect the cable to the outdoor unit 1. Remove control board cover (resin and metal). 2. Remove particular plate. 3. Remove plugs. 4. Fix the conduit connectors to the knockout holes with lock-nuts, then secure them against the side panel. 5. All wires pass through conduits & particular...

  • Page 49: 13. Operation

    49 13. Operation control 13.1 basic function inverter control, which equipped with a microcomputer in determining the most suitable operation mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operation mode, the microcomputer maintai...

  • Page 50

    50 13.1.4.2 automatic operation (for single split connection only)  this mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature.  during operation mode judgment, indoor fan motor (with...

  • Page 51

    51 13.3 indoor fan motor operation 13.3.1 basic rotation speed (rpm)  manual fan speed [cooling, dry] o fan motor’s number of rotation is determined according to remote control setting. Remote control ○ ○ ○ ○ ○ tab hi me+ me me- lo [heating] o fan motor’s number of rotation is determined according ...

  • Page 52

    52 13.5 airflow direction  there are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).  control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake ...

  • Page 53

    53 13.5.3 horizontal airflow (cu-e18rkua cu-e24rkua)  automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as figur...

  • Page 54

    54 13.7 quiet operation (heating)  purpose o to provide quiet heating operation compare to normal operation.  control condition o quiet operation start condition when “powerful/quiet” button at remote control is pressed. Quiet led illuminates. O quiet operation stop condition when one of the follo...

  • Page 55

    55 13.10 auto restart control  when the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes.  th...

  • Page 56

    56 2. Circuit abnormal (fix output lo) a. Abnormal judgment start condition. After econavi and auto comfort sensor unit power on, and after pressed 70 seconds. B. Control content. Judge econavi and auto comfort sensor power level every 100ms. C. Abnormal judgment condition. When econavi and auto com...

  • Page 57

    57  econavi start condition. Press econavi button.  econavi stop condition. Press econavi button again. Off timer activates. Press off/on button to turn off the air conditioner. Press auto off/on button to turn off the air conditioner. Press powerful/quiet button.  auto comfort start condition. P...

  • Page 58

    58 13.12.1 human activity sensor check mode  to enable human activity sensor abnormality check mode, during econavi operation on:  during econavi is on, when check signal received, if either sensors has abnormality, the 4 times abnormality counter is ignored, econavi indicator will blink immediate...

  • Page 59

    59 14. Operation control (for multi split connection) during multi split connection, indoor unit’s operation controls are same with single split connection unless specified in this chapter. 14.1 cooling operation 14.1.1 thermostat control  capability supply to indoor unit is off (expansion valve cl...

  • Page 60

    60 14.4 automatic operation (for multi split connection only)  this mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature.  during operation mode judgment, indoor fan motor (...

  • Page 61

    61 15. Protection control (e9rk and e12rk) 15.1 protection control for all operations 15.1.1 restart control (time delay safety control)  the compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing off/on button at remote contro...

  • Page 62

    62 15.1.5 compressor overheating prevention control  instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below.  if compressor discharge temperature exceeds 224.6°f, compressor will be stopped, occurs 4 times per 20 m...

  • Page 63

    63 15.2 protection control for cooling & soft dry operation 15.2.1 outdoor air temperature control  the maximum current value is regulated when the outdoor air temperature rise above 57.2°f in order to avoid compressor overloading.  the compressor will be stopped at outdoor air temperature ≤ -4°f....

  • Page 64

    64 15.2.5 dew prevention control 1  to prevent dew formation at indoor unit discharge area.  this control will be activated if: o outdoor air temperature and indoor pipe temperature judgment by microcontroller is fulfilled. O when cooling or dry mode is operated more than 20 minutes or more.  thi...

  • Page 65

    65 15.2.6.3 overload protection control  the compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown below.  if the heat exchanger temperature exceeds 140.0°f, compressor will stop. 15.2.6.4 low temperature compressor oil return control  in heating ...

  • Page 66

    66 16. Protection control (e18rk and e24rk) 16.1 protection control for all operations 16.1.1 restart control (time delay safety control)  the compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing off/on button at remote contr...

  • Page 67

    67 16.1.5 compressor overheating prevention control  instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below.  if compressor discharge temperature exceeds 233.6°f, compressor will be stopped, occurs 4 times per 20 m...

  • Page 68

    68  the compressor will be stopped at outdoor air temperature ≤ -4°f. The unit still operate within the temperature range. 16.2.2 cooling overload control  pipe temperature limitation / restriction. O detects the outdoor pipe temperature and carry out restriction / limitation below (limit the comp...

  • Page 69

    69 16.2.6.2 outdoor air temperature control  the max current value is regulated when the outdoor air temperature rise above 57.2°f in order to avoid compressor overloading.  the compressor will be stopped at outdoor air temperature ≤ -4°f. The unit still operate within the temperature range. 16.2....

  • Page 70: 17. Servicing

    70 17. Servicing mode 17.1 auto off/on button auto off/on button pressed auto off/on button pressed auto off/on button pressed 5 sec 5 sec auto operation test run operation (forced cooling operation) stop test run operation (forced cooling operation) stop beep beep x 2 1 auto operation mode the auto...

  • Page 71

    71 press auto off/on button to toggle remote control receiving sound. - short “beep”: turn off remote control receiving sound. - long “beep”: turn on remote control receiving sound. After auto off/on button is pressed, the 20 seconds counter for remote control receiving sound off/on mode is restarte...

  • Page 72

    72 17.3 remote control button 17.3.1 set button  to check remote control transmission code and store the transmission code to eeprom o press “set” button continuously for 10 seconds by using pointer o press “timer set” button unit a “beep” sound is heard as confirmation of transmission code change....

  • Page 73: 18. Troubleshooting

    73 18. Troubleshooting guide 18.1 refrigeration cycle system in order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a f...

  • Page 74

    74 18.1.1 relationship between the condition of the air conditioner and pressure and electric current  carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started. E d o m g n it a e h e d o m g n il o o c low pressure high pressure electr...

  • Page 75

    75 18.2 breakdown self diagnosis function 18.2.1 self diagnosis function (three digits alphanumeric code)  once error occurred during operation, the unit will stop its operation, and timer led blinks.  although timer led goes off when power supply is turned off, if the unit is operated under a bre...

  • Page 76

    76 18.3 error code table abnormality / protection control abnormality judgement protection operation problem check location diagnosis display — — n o it a r e p o l a m r o n — e r u li a f f o y r o m e m o n 0 0 h h11 indoor/outdoor abnormal communication after operation for 1 minute indoor fan on...

  • Page 77

    77 note: “○” – frequency measured and fan speed fixed the memory data of error code is erased when the power supply is cut off, or press the auto switch until “beep” sound heard following by pressing the check button at remote control. Although operation forced to stop when abnormality detected, eme...

  • Page 78

    78 18.4 self-diagnosis method 18.4.1 h11 (indoor/outdoor abnormal communication) malfunction decision conditions  during startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction caused  faulty ...

  • Page 79

    79 18.4.2 h12 (indoor/outdoor capacity rank mismatched) malfunction decision conditions  during startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction caused  wrong models interconnected.  wrong indoor unit or outdoor unit pcbs mounted.  indo...

  • Page 80

    80 18.4.3 h14 (indoor intake air temperature sensor abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction caused  faulty connector con...

  • Page 81

    81 18.4.4 h15 (compressor temperature sensor abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction caused  faulty connector connectio...

  • Page 82

    82 18.4.5 h16 (outdoor current transformer) malfunction decision conditions  an input current, detected by current transformer ct, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction caused  lack of gas.  broken ct (current transformer)....

  • Page 83

    83 18.4.6 h19 (indoor fan motor – dc motor mechanism locked) malfunction decision conditions  the rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or malfunction caused  operation stops due to short circuit in...

  • Page 84

    84 18.4.7 h23 (indoor pipe temperature sensor abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction caused  faulty connector conne...

  • Page 85

    85 18.4.8 h27 (outdoor air temperature sensor abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction caused  faulty connector connection.  f...

  • Page 86

    86 18.4.9 h28 (outdoor pipe temperature sensor abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction caused  faulty connector connection. ...

  • Page 87

    87 18.4.10 h30 (compressor discharge temperature sensor abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction caused  faulty conn...

  • Page 88

    88 18.4.11 h32 (outdoor heat exchanger temperature sensor 2 abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction caused  faulty ...

  • Page 89

    89 18.4.12 h33 (unspecified voltage between indoor and outdoor) malfunction decision conditions  the supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction caused  wrong models interconnected.  wrong indoor unit and outdoor unit pcbs used.  indoor unit or ou...

  • Page 90

    90 18.4.13 h36 (outdoor gas pipe sensor abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction caused  faulty connector connection.  fa...

  • Page 91

    91 18.4.14 h37 (outdoor liquid pipe temperature sensor abnormality) malfunction decision conditions  during startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction caused  faulty connecto...

  • Page 92

    92 18.4.15 h59 (human activity sensor abnormality) malfunction decision conditions  feedback signal of human activity sensor. Malfunction caused  feedback signal is fixed at 0 vdc or 5 vdc continuously for 25 seconds during econavi or auto comfort operation.  feedback signal is detected during ec...

  • Page 93

    93 18.4.16 h70 (light sensor abnormality) malfunction decision conditions  feedback signal of light sensor. Malfunction caused  feedback value is 0 vdc continuously. Troubleshooting is the connector connection normal? When abnormality indication starts again. For safety reason and to prevent compo...

  • Page 94

    94 18.4.17 h97 (outdoor fan motor – dc motor mechanism locked) malfunction decision conditions  the rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor. Malfunction caused  operation stops due to short circuit inside the fan motor winding.  op...

  • Page 95

    95 18.4.18 h98 (error code stored in memory and no alarm is triggered / no timer led flashing) malfunction decision conditions  indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation.  phenomena: unit is stoppi...

  • Page 96

    96 18.4.19 h99 (indoor freeze prevention protection: cooling or soft dry) error code will not display (no timer led blinking) but store in eeprom malfunction decision conditions  freeze prevention control takes place (when indoor pipe temperature is lower than 2°c). Malfunction caused  air short c...

  • Page 97

    97 18.4.20 f11 (4-way valve switching failure) malfunction decision conditions  when indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction caused  indoor heat...

  • Page 98

    98 18.4.21 f17 (indoor standby units freezing abnormality) malfunction decision conditions  when the different between indoor intake air temperature and indoor pipe temperature is above 50°f or indoor pipe temperature is below 30.2°f remark: when the indoor standby unit is freezing, the outdoor uni...

  • Page 99

    99 18.4.22 f90 (power factor correction protection) malfunction decision conditions  to maintain dc voltage level supply to power transistor.  to detect high dc voltage level after rectification. Malfunction caused  during startup and operation of cooling and heating, when power factor correction...

  • Page 100

    100 18.4.23 f91 (refrigeration cycle abnormality) malfunction decision conditions  the input current is low while the compressor is running at higher than the setting frequency. Malfunction caused  lack of gas.  3-way valve close. Troubleshooting when f91 indication happens. For safety reason and...

  • Page 101

    101 18.4.24 f93 (compressor rotation failure) malfunction decision conditions  a compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction caused  compressor terminal disconnect.  faulty outdoor pcb.  faulty compresso...

  • Page 102

    102 18.4.25 f95 (outdoor high pressure protection: cooling or soft dry) malfunction decision conditions  during operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction caused  outdoor heat excha...

  • Page 103

    103 18.4.26 f96 (ipm overheating) malfunction decision conditions  during operating of cooling and heating, when ipm temperature data (212°f) is detected by the ipm temperature sensor. Multi models only o compressor overheating: during operation of cooling and heating, when the compressor ol is act...

  • Page 104

    104 18.4.27 f97 (compress or overheating) malfunction decision conditions  during operation of cooling and heating, when compressor tank temperature data (233.6°f) is detected by the compressor tank temperature sensor. Malfunction caused  faulty compressor tank temperature sensor  2/3 way valve c...

  • Page 105

    105 18.4.28 f98 (input over current detection) malfunction decision conditions  during operation of cooling and heating, when an input over-current (x value in total running current control) is detected by checking the input current value being detected by current transformer (ct) with the compress...

  • Page 106

    106 18.4.29 f99 (dc peak detection) malfunction decision conditions during startup and operation of cooling and heating, when inverter dc peak data is received by the outdoor internal dc peak sensing circuitry. Malfunction caused  dc current peak due to compressor failure.  dc current peak due to ...

  • Page 107

    107 warning 19. Disassembly and assembly instructions high voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 19.1 cs-e9rkuaw cs-e12r...

  • Page 108

    108 figure 3 figure 4 19.1.1.3 to remove discharge grille figure 5 19.1.1.4 to remove control board figure 6 cn-rmt cn-fm cn-stm1 cn-msens cn-th cn-disp 7. Detach the cn-disp connector then remove the indicator complete. 10. Detach 3 or 4 connectors as labeled from the electronic controller. Then pu...

  • Page 109

    109 19.1.1.5 to remove cross flow fan and indoor fan motor figure 7 figure 8 figure 9 14. Remove the screw that holding the cross flow fan and fan motor axis. 16. Remove the bearing by pulling it out gently 15. Remove the screw from the evaporator. 17. Push the holdfast to the left and lift up the e...

  • Page 110

    110 figure 10 reminder: to reinstall the cross flow fan, ensure cross flow fan is in line as shown in figure 10 cross flow fan.

  • Page 111

    111 warning high voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 19.2 cs-e18rkuaw cs-e24rkuaw 19.2.1 indoor electronic controllers...

  • Page 112

    112 19.2.1.3 to remove discharge grille figure 5 19.2.1.4 to remove control board figure 6 19.2.1.5 to remove cross flow fan and indoor fan motor figure 7 11. Pull out to remove the drain hose from the discharge grille. 12. Then pull the discharge grille downward gently to dismantle it. 13. Remove 4...

  • Page 113

    113 figure 8 figure 9 figure 10 15. Remove the screw from the evaporator. 16. Remove the bearing by pulling it out gently. 19. Fan motor can be removed after the removal of cross flow fan. 18. Remove the cross flow fan from the unit by pulling it to the left and downward. 17. Push the holdfast to th...

  • Page 114

    114 19.3 outdoor electronic controller removal procedure 19.3.1 cu-e9rkua cu-e12rkua caution! When handling electronic controller, be careful of electrostatic discharge. 1 remove the 3 screws of the top panel. Fig. 1 2 remove the 6 screws of the front panel. Fig. 2 3 remove the screw of the terminal...

  • Page 115

    115 19.3.2 cu-e18rkua cu-e24rkua caution! When handling electronic controller, be careful of electrostatic discharge. 1 remove the 8 screws of the top panel. Fig. 1 2 remove the 8 screws of the front panel. Fig. 2 3 remove the top cover of the electronic controller. Fig. 3 4 remove the control board...

  • Page 116: 20. Technical

    116 20. Technical data technical data provided are based on the air conditioner running under free frequency. 20.1 cool mode performance data unit setting: standard piping length, hi fan, cool mode at 60.8°f voltage: 230v 20.1.1 cs-e9rkuaw cu-e9rkua rated frequency (compressor speed is fixed during ...

  • Page 117

    117 20.1.3 cs-e18rkuaw cu-e18rkua rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose) indoor (°c / °f) outdoor (°c / °f) db wb -20 (-4) -10 (14) 0 (32) 5 (41) tc shc ip tc shc ip tc shc ip tc shc ip 27 (80.6) 19 (66.2) 21188 179...

  • Page 118

    118 20.1.5 cs-e9rkuaw cu-e9rkua maximum capacity indoor (°c / °f) outdoor (°c / °f) db wb -20 (-4) -10 (14) 0 (32) 5 (41) tc shc ip tc shc ip tc shc ip tc shc ip 27 (80.6) 19 (66.2) 10120 8963 508 10120 8963 516 10073 9043 504 10281 9231 476 22 (71.6) 10694 6372 540 10694 6372 549 10758 6463 517 116...

  • Page 119

    119 20.1.7 cs-e18rkuaw cu-e18rkua maximum capacity indoor (°c / °f) outdoor (°c / °f) db wb -20 (-4) -10 (14) 0 (32) 5 (41) tc shc ip tc shc ip tc shc ip tc shc ip 27 (80.6) 19 (66.2) 21189 17546 935 21166 17526 924 21142 17843 896 21084 17448 888 22 (71.6) 24305 14340 817 24281 14326 807 23148 1401...

  • Page 120

    120 20.2 heat mode performance data unit setting: standard piping length, hi fan, heat mode at 86°f voltage: 230v 20.2.1 cs-e9rkuaw cu-e9rkua rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose) indoor (°c / °f) outdoor (°c / °f)...

  • Page 121

    121 20.2.5 cs-e9rkuaw cu-e9rkua maximum capacity indoor (°c / °f) outdoor (°c / °f) db -20 (-4) -8.3 (17.06) 1.7 (35.06) 8.3 (46.94) 12 (53.6) 23.9 (75.02) tc ip tc ip tc ip tc ip tc ip tc ip 24 (75.2) 7056 1301 9370 1320 12234 1459 14183 1512 14534 1525 15225 1424 20 (68) 7433 1295 10019 1315 12583...

  • Page 122: 21. Service

    122 21. Service data service data provided are based on the air conditioner running under rated frequency during forced cooling / forced heating mode. 21.1 cool mode outdoor air temperature characteristic condition - indoor room temperature: 80°f dry bulb/67°f wet bulb - unit setting: standard pipin...

  • Page 123

    123 21.1.2 cs-e12rkuaw cu-e12rkua 57.0 57.5 58.0 58.5 59.0 59.5 60.0 60.5 61.0 61.5 62.0 -4 6 16 26 36 46 56 66 76 86 96 106 116 ou tle t air (°f ) outdoor air temperature (°f) 230 2.5 3.0 3.5 4.0 4.5 5.0 5.5 -4 6 16 26 36 46 56 66 76 86 96 106 116 c u rrent (a ) outdoor air temperature (°f) 132.0 1...

  • Page 124

    124 21.1.3 cs-e18rkuaw cu-e18rkua 52.0 54.0 56.0 58.0 60.0 62.0 64.0 66.0 68.0 -4 6 16 26 36 46 56 66 76 86 96 106 116 ou tle t air (°f ) outdoor air temperature (°f) 230 4.0 4.5 5.0 5.5 6.0 6.5 -4 6 16 26 36 46 56 66 76 86 96 106 116 c u rrent (a ) outdoor air temperature (°f) 125.0 130.0 135.0 140...

  • Page 125

    125 21.1.4 cs-e24rkuaw cu-e24rkua 48.0 49.0 50.0 51.0 52.0 53.0 54.0 55.0 56.0 57.0 58.0 59.0 60.0 -4 6 16 26 36 46 56 66 76 86 96 106 116 ou tle t air (°f ) outdoor air temperature (°f) 230 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 -4 6 16 26 36 46 56 66 76 86 96 106 116 c u rrent (a ) outdoor air tem...

  • Page 126

    126 21.2 heat mode outdoor air temperature characteristic condition - indoor room temperature: 68°f dry bulb/-°f wet bulb - unit setting: standard piping length, forced heating at 86°f, hi fan - compressor frequency: rated for heating operation - piping length: 24.6ft - voltage: 230v 21.2.1 cs-e9rku...

  • Page 127

    127 21.2.2 cs-e12rkuaw cu-e12rkua 88.0 90.0 92.0 94.0 96.0 98.0 100.0 102.0 104.0 106.0 108.0 110.0 -4 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 ou tle t air (°f ) outdoor air temperature (°f) 230 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 5.8 -4 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 c u rrent (a )...

  • Page 128

    128 21.2.3 cs-e18rkuaw cu-e18rkua 88.0 90.0 92.0 94.0 96.0 98.0 100.0 102.0 104.0 106.0 -4 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 ou tle t air (°f ) outdoor air temperature (°f) 230 6.4 6.6 6.8 7.0 7.2 7.4 7.6 7.8 8.0 8.2 8.4 -4 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 c u rrent (a ) out...

  • Page 129

    129 21.2.4 cs-e24rkuaw cu-e24rkua 102.0 104.0 106.0 108.0 110.0 112.0 114.0 116.0 118.0 120.0 122.0 -4 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 ou tle t air (°f ) outdoor air temperature (°f) 230 9.0 9.5 10.0 10.5 11.0 11.5 12.0 -4 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 c u rrent (a ) ou...

  • Page 130

    130 21.3 piping length correction factor the characteristic of the unit has to be corrected in accordance with the piping length. 21.3.1 cs-e9rkuaw cu-e9rkua cs-e12rkuaw cu-e12rkua note: the graphs show the factor after added right amount of additional refrigerant. 0.960 0.970 0.980 0.990 1.000 1.01...

  • Page 131

    131 21.3.2 cs-e18rkuaw cu-e18rkua cs-e24rkuaw cu-e24rkua note: the graphs show the factor after added right amount of additional refrigerant. 0.950 0.960 0.970 0.980 0.990 1.000 1.010 1.020 9.5 19.5 29.5 39.5 49.5 59.5 69.5 79.5 89.5 99.5 c ooling c a pacity c o rrection f a ctor piping length (ft) ...

  • Page 132

    132 22. Exploded view and replacement parts list 22.1 indoor unit 22.1.1 cs-e9rkuaw cs-e12rkuaw 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. I/i i/i o/i cwh55025j cwh55051j 12 24 15 36 55 33 50 45...

  • Page 133

    133 safety ref. No. Part name & description qty. Cs-e9rkuaw cs-e12rkuaw remark 1 chassis complete 1 cwd50c1633 ← 2 fan motor 1 l6cbyyyl0055 ← o 3 cross-flow fan complete 1 cwh02c1076 ← 4 bearing assy 1 cwh64k007 ← o 5 screw - cross-flow fan 1 cwh551146 ← 6 particular piece 1 cwd933067 ← 7 evaporator...

  • Page 134

    134 safety ref. No. Part name & description qty. Cs-e9rkuaw cs-e12rkuaw remark 51 shock absorber ( l ) 1 cwg713386 ← 52 shock absorber ( r ) 1 cwg713387 ← 53 c.C.Case 1 cwg567355 ← 54 air purifying filter 1 cwd00c1141 ← o 55 bag complete (tube connector) 1 cwh82c2030 ← (note)  all parts are supplie...

  • Page 135

    135 22.1.2 cs-e18rkuaw cs-e24rkuaw 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. Cwh55025j cwh55051j 28 i/i i/i o/i 35 30 31 29 34 25 13 16 6 1 40 3 4 17 5 22 8 21 37 38 39 50 53 27 44 10 23 11 12 ...

  • Page 136

    136 safety ref. No. Part name & description qty. Cs-e18rkuaw cs-e24rkuaw remark 1 chassis complete 1 cwd50c1637 ← 2 fan motor 1 l6cbyyyl0056 ← o 3 cross-flow fan complete 1 cwh02c1077 ← 4 bearing assy 1 cwh64k007 ← o 5 screw - cross-flow fan 1 cwh551146 ← 6 particular piece 1 cwd933067 ← 7 evaporato...

  • Page 137

    137 safety ref. No. Part name & description qty. Cs-e18rkuaw cs-e24rkuaw remark 49 remote control holder 1 cwh361078 ← 50 bag 1 cwg861498 ← 51 shock absorber ( l ) 1 cwg713402 ← 52 shock absorber ( r ) 1 cwg713403 ← 53 c.C. Case 1 cwg567455 ← 54 air purifying filter 1 cwd00c1141 ← o 55 bag complete ...

  • Page 138

    138 22.2 outdoor unit 22.2.1 cu-e9rkua cu-e12rkua 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. 24 27 23 19 4 20 5 26 15 18 8 9 10 1 36 17 22 16 32 33 14 2 11 29 6 7 30 3 31 28 37 39 43 12 34 47 49...

  • Page 139

    139 safety ref. No. Part name & description qty. Cu-e9rkua cu-e12rkua remark 1 chassis complete 1 cwd50k2081a ← 2 fan motor bracket 1 cwd541089 ← 3 screw - fan motor bracket 2 cwh551217 ← 4 fan motor 1 arw6404ac ← o 5 screw - fan motor mount 4 cwh55252j ← 6 propeller fan assy 1 cwh03k1014 ← 7 nut - ...

  • Page 140

    140 safety ref. No. Part name & description qty. Cu-e9rkua cu-e12rkua remark 50 sound proof material 1 cwg302292 ← 51 sound proof material 1 cwg302569 ← (note)  all parts are supplied from phaam, malaysia (vendor code: 00029488).  “o” marked parts are recommended to be kept in stock..

  • Page 141

    141 22.2.2 cu-e18rkua cu-e24rkua 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. 46 29 32 26 27 28 11 45 24 44 34 35 30 31 5 6 8 9 19 52 10 33 51 25 50 49 47 48 7 1 43 40 39 42 2 23 12 37 16 18 17 22...

  • Page 142

    142 safety ref. No. Part name & description qty. Cu-e18rkua cu-e24rkua remark 1 chassis complete 1 cwd52k1228a ← 2 anti - vibration bushing 3 cwh50055 ← 3 compressor 1 5kd240xaf21 ← o 4 nut - compressor mount 3 cwh561049 ← 5 fan motor bracket 1 cwd541127 ← 6 fan motor 1 ehds80cac ← o 7 screw - fan m...

  • Page 143

    143 safety ref. No. Part name & description qty. Cu-e18rkua cu-e24rkua remark 49 shock absorber ( r ) 1 cwg712880 ← 50 shock absorber ( l ) 1 cwg712879 ← 51 c.C. Case 1 cwg565614 ← 52 electronic controller - nf 1 cwa747077 ← (note)  all parts are supplied from papamy, malaysia (vendor code: 0002948...