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Panasonic CS-MRE12MKE Service manual

Other manuals for CS-MRE12MKE: Operating Instructions Manual
Manual is about: Indoor Unit Outdoor Unit

Summary of CS-MRE12MKE

  • Page 1

    © panasonic ha air-conditioning (m) sdn. Bhd. 2011. Unauthorized copying and distribution is a violation of law. Order no. Phaam1103074c8 air conditioner indoor unit outdoor unit cs-mre7mke cu-2re15mbe cs-mre9mke cu-2re18mbe cs-mre12mke table of contents page page 1 safety precautions---------------...

  • Page 2

    2 13.6. Timer control---------------------------------------------- 39 13.7. Auto restart control------------------------------------- 40 13.8. Indication panel------------------------------------------- 40 14 operation control----------------------------------------------- 41 14.1. Compressor opera...

  • Page 3: 1 Safety Precautions

    3 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. • the caution items stated...

  • Page 4

    4 18. For r410a models, when connecting the piping, do not use any existing (r22) pipes and flare nuts. Using such same may cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only r410a materials. Thickness of copper pipes used with r...

  • Page 5: 2 Specifications

    5 2 specifications 2.1. Cs-mre7mke cs-mre9mke cs-mre12mke model indoor cs-mre7mke cs-mre9mke performance test condition eurovent power supply phase, hz single, 50 v 230 min. Mid. Max. Min. Mid. Max. Cooling capacity kw 1.10 2.00 2.50 1.10 2.50 3.10 btu/h 3750 6820 8530 3750 8530 10600 running curren...

  • Page 6

    6 1. Cooling capacities are based on indoor temperature of 27 “c dry bulb (80.6“f dry bulb), 19.0“c wet bulb (66.2“f wet bulb) and outdoor air temperature of 35 “c dry bulb (95“f dry bulb), 24“c wet bulb (75.2“f wet bulb) 2. Heating capacities are based on indoor temperature of 20 “c dry bulb (68“f ...

  • Page 7

    7 model indoor cs-mre12mke performance test condition eurovent power supply phase, hz single, 50 v 230 min. Mid. Max. C ooling capacity kw 1.10 3.20 3.70 btu/h 3750 10900 12600 running current a — 4.60 — input power w 230 980 1.21k annual consumption kwh — 490 — eer w/w 4.78 3.27 3.06 indoor noise (...

  • Page 8

    8 1. Cooling capacities are based on indoor temperature of 27 “c dry bulb (80.6“f dry bulb), 19.0“c wet bulb (66.2“f wet bulb) and outdoor air temperature of 35 “c dry bulb (95“f dry bulb), 24“c wet bulb (75.2“f wet bulb) 2. Heating capacities are based on indoor temperature of 20 “c dry bulb (68“f ...

  • Page 9

    9 2.2. Cu-2re15mbe item unit outdoor unit indoor unit combination 2.0kw + 2.0kw power source 1 phase, 230v, 50hz (power supply from outdoor unit) cooling operation capacity kw 4.4 (1.5 ~ 4.8) btu/h 15000 (5120 ~ 16400) electrical data running current a 6.10 power input kw 1.30 (0.27 ~ 1.52) eer w/w ...

  • Page 10

    10 note • specifications are subject to change without notice for further improvement. Item unit outdoor unit dry bulb wet bulb indoor operation range cooling maximum 32 23 minimum 16 11 heating maximum 30 — minimum 16 — outdoor operation range cooling maximum 43 26 minimum 16 11 heating maximum 24 ...

  • Page 11

    11 2.3. Cu-2re18mbe item unit outdoor unit indoor unit combination 3.2kw + 3.2kw power source 1 phase, 230v, 50hz (power supply from outdoor unit) cooling operation capacity kw 4.8 (1.5 ~ 5.0) btu/h 16400 (5120 ~ 17100) electrical data running current a 6.95 power input kw 1.49 (0.27 ~ 1.58) eer w/w...

  • Page 12

    12 note • specifications are subject to change without notice for further improvement. Item unit outdoor unit dry bulb wet bulb indoor operation range cooling maximum 32 23 minimum 16 11 heating maximum 30 — minimum 16 — outdoor operation range cooling maximum 43 26 minimum 16 11 heating maximum 24 ...

  • Page 13

    13 • multi split combination possibility: - a single outdoor unit enables air conditioning of up to two separate rooms for cu-2re15mbe, cu-2re18mbe. • outdoor unit : cu-2re15mbe • outdoor unit : cu-2re18mbe.

  • Page 14: 3 Features

    14 3 features • inverter technology - wider output power range - energy saving - quick cooling - quick heating - more precise temperature control • environment protection - non-ozone depletion substances refrigerant (r410a) • long installation piping - long piping up to 15 meters (0.75 ~ 1.75hp) dur...

  • Page 15

    15 4 location of controls and components 4.1. Indoor unit 4.2. Outdoor unit 4.3. Remote control.

  • Page 16: 5 Dimensions

    16 5 dimensions 5.1. Indoor unit.

  • Page 17

    17 5.2. Outdoor unit.

  • Page 18

    18 6 refrigeration cycle diagram.

  • Page 19: 7 Block Diagram

    19 7 block diagram.

  • Page 20: 8 Wiring Connection Diagram

    20 8 wiring connection diagram 8.1. Indoor unit.

  • Page 21

    21 8.2. Outdoor unit.

  • Page 22

    22 9 electronic circuit diagram 9.1. Indoor unit.

  • Page 23

    23 9.2. Outdoor unit.

  • Page 24: 10 Printed Circuit Board

    24 10 printed circuit board 10.1. Indoor unit 10.1.1. Main printed circuit board.

  • Page 25

    25 10.1.2. Power printed circuit board 10.1.3. Indicator printed circuit board.

  • Page 26

    26 10.2. Outdoor unit.

  • Page 27: 11 Installation Information

    27 11 installation information 11.1. Cu-2re15mbe 11.1.1. Check points 11.1.2. The shapes of the 3-way valve caps of the outdoor unit have been changed • accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed. • firmly tighten the 3-way valve caps ...

  • Page 28

    28 11.2. Cu-2re18mbe 11.2.1. Check points 11.2.2. The shapes of the 3-way valve caps of the outdoor unit have been changed • accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed. • firmly tighten the 3-way valve caps by hand, and then tighten th...

  • Page 29: 12 Installation Instruction

    29 12 installation instruction 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 air circulation. • ...

  • Page 30

    30 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 31

    31 1. For the right rear piping 2. For the right and right bottom piping 3. For the embedded piping (this can be used for left rear piping and bottom piping also.).

  • Page 32

    32 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. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 mm 2 flexible cord, type designation 245 iec 57 o...

  • Page 33

    33 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 is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3. Please make flare after inserting the flare n...

  • Page 34

    34 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 (ø10 mm). 2. When installing at roof, please consider s...

  • Page 35

    35 6. Tighten the service port caps of the 3-way valve at a torque of 18 n m with a torque wrench. 7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “open” using a hexagonal wrench (4 mm). 8. Mount valve caps onto the 2-way valve and the 3-way valve....

  • Page 36: 13 Operation and Control

    36 13 operation and control 13.1. Basic function inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer mai...

  • Page 37

    37 13.1.4.2. Temperature sampling control • temperature sampling is controlled by outdoor unit where room temperature for all power supply on indoor unit could be obtained. • when capability supply to the indoor unit is off and the compressor is on, the indoor fan motor is stopped. During this condi...

  • Page 38

    38 [heating] • according to indoor pipe temperature, automatic heating fan speed is determined as follows. B. Feedback control • immediately after the fan motor started, feedback control is performed once every second. • during fan motor on, if fan motor feedback 2550 rpm or increase, fan motor is t...

  • Page 39

    39 13.5. Airflow direction 1. There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes). 2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and inta...

  • Page 40

    40 13.6.2. Off timer control off timer can be set using remote control, the unit with timer set will stop operate at set time. 13.7. Auto restart control • when the power supply is cut off during the operation of air conditioner, the compressor will re-operate between three to four minutes (10 patte...

  • Page 41: 14 Operation Control

    41 14 operation control 14.1. Compressor operation frequency • the compressor operation frequency is determined by room temperature, capacity, and model type. - when operation is started after the air conditioner has been stopped for more than one hour, the air conditioner operates at a high frequen...

  • Page 42: 15 Protection Control

    42 15 protection control 15.1. Time delay safety control • the compressor does not restart for 3 minutes after stop of compressor. 15.2. Total running current control • when the air conditioner has been operated at the capacity designated by the indoor unit and the total running current exceeds sett...

  • Page 43

    43 15.5. Low pressure prevention control (gas leakage detection) • control start conditions - for 5 minutes, the compressor continuously operates and outdoor total current is between 1.5a and 1.88a. - during cooling and soft dry operations: - indoor heat exchanger temperature is above 20 “c. - durin...

  • Page 44

    44 15.7.2. Outdoor air temperature control • the compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. This control will begin 1 minute after the compressor starts. 15.7.3. Abnormal wiring or piping connection checking control • 3 min...

  • Page 45: 16 Servicing Mode

    45 16 servicing mode 16.1. Auto off/on button 1. Auto operation mode the auto operation will be activated immediately once the auto off/on button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. 2. Test run operati...

  • Page 46

    46 4. Remote control receiving sound off/on mode the remote control receiving sound off/on mode will be activated if the auto off/on button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the remote control receiving sound off/on mode is in st...

  • Page 47: 17 Troubleshooting Guide

    47 17 troubleshooting guide 17.1. 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 48

    48 17.1.1. 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. Cooling mode heating mode low pressure high pressure electric current duri...

  • Page 49

    49 17.2. Breakdown self diagnosis function 17.2.1. Self diagnosis function (three digits alphanumeric code) • once abnormality has 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...

  • Page 50

    50 17.3. Self diagnosis function • the display screen of wireless remote control unit and the self-diagnosis leds (green) on the outdoor printed circuit board in the outdoor unit can be used to identify the location of the problem. Refer to the table below to identify and solve the cause of the prob...

  • Page 51

    51 h33 indoor / outdoor misconnection abnormality — — indoor and outdoor rated voltage different • indoor and outdoor units check h36 outdoor gas pipe temperature sensor abnormality continuous for 5s heating protection operation only outdoor gas pipe temperature sensor open or short circuit • outdoo...

  • Page 52

    52 led 1 illuminate is indicated that outdoor unit is operating normally. If the led 1 is switched off or flashing, check the power supply and self-diagnosis indication. F96 power transistor module overheating protection 4 times happen within 30 minutes — power transistor module overheat • pcb fault...

  • Page 53

    53 17.4. Self-diagnosis method 17.4.1. 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 54

    54 17.4.2. 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. • indoo...

  • Page 55

    55 17.4.3. 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 conn...

  • Page 56

    56 17.4.4. 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 connection...

  • Page 57

    57 17.4.5. H16 (outdoor current transformer open circuit) malfunction decision conditions a current transformer (ct) is detected by checking the compressor running frequency ( rated frequency) and ct detected input current (less than 0.65a) for continuously 20 seconds. Malfunction caused • ct defect...

  • Page 58

    58 17.4.6. 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 ins...

  • Page 59

    59 17.4.7. 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 connec...

  • Page 60

    60 17.4.8. 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. • fa...

  • Page 61

    61 17.4.9. 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 62

    62 17.4.10. 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 c...

  • Page 63

    63 17.4.11. 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 out...

  • Page 64

    64 17.4.12. 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. • fau...

  • Page 65

    65 17.4.13. 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. • ope...

  • Page 66

    66 17.4.14. H98 (indoor high pressure protection) error code will not display (no timer led blinking) but store in eeprom malfunction decision conditions during heating operation, the temperature detected by the indoor pipe temperature sensor is above 60 “c. Malfunction caused • air short circuit at...

  • Page 67

    67 17.4.15. 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 ci...

  • Page 68

    68 17.4.16. F11 (4-way valve abnormality) malfunction decision conditions • when heating operation, when indoor pipe temperature is below 10 “c • when cooling operation, when indoor pipe temperature is above 45 “c malfunction caused • connector in poor contact • faulty sensor • faulty outdoor unit p...

  • Page 69

    69 17.4.17. F17 (indoor standby units freezing abnormality) malfunction decision conditions • when the different between indoor intake air temperature and indoor pipe temperature is above 10 “c or indoor pipe temperature is below -1.0 “c remark: when the indoor standby unit is freezing, the outdoor ...

  • Page 70

    70 17.4.18. F90 (power factor correction protection) malfunction decision conditions during startup and operation of cooling and heating, when power factor correction (pfc) protection circuitry at the outdoor unit main pcb senses abnormal high dc voltage level. Malfunction caused • dc voltage peak d...

  • Page 71

    71 17.4.19. F91 (refrigeration cycle abnormality) malfunction caused • faulty indoor intake air or pipe temperature sensor • 2/3 way valve closed • refrigerant shortage (refrigerant leakage) • clogged expansion valve or strainer • faulty outdoor unit • poor compression of compressor troubleshooting.

  • Page 72

    72 17.4.20. 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 compressor tr...

  • Page 73

    73 17.4.21. F95 (cooling high pressure abnormality) malfunction decision conditions during operation of cooling, when outdoor unit heat exchanger high temperature data (61 “c) is detected by the outdoor pipe temperature sensor. Malfunction caused • air short circuit at indoor unit • dust accumulatio...

  • Page 74

    74 17.4.22. F96 (ipm overheating) malfunction decision conditions during operating of cooling and heating, when ipm temperature data (100 “c) is detected by the ipm temperature sensor. Multi models only • compressor overheating: during operation of cooling and heating, when the compressor ol is acti...

  • Page 75

    75 17.4.23. F97 (compressor overheating) malfunction decision conditions during operation of cooling and heating, when compressor tank temperature data (112 “c) is detected by the compressor tank temperature sensor. Malfunction caused • faulty compressor tank temperature sensor • 2/3 way valve close...

  • Page 76

    76 17.4.24. 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 transforme r (ct) with the compresso...

  • Page 77

    77 17.4.25. F99 (output over current detection) malfunction decision conditions during operation of cooling and heating, when an output over-current (dc peak current value at ipm prevention control) is detected by checking the current that flows in the inverter dc peak sensing circuitry. Malfunction...

  • Page 78

    78 18 disassembly and assembly instructions 18.1. Indoor electronic controllers, cross flow fan and indoor fan motor removal procedures 18.1.1. To remove front grille 18.1.2. To remove power electronic controller high voltages are generated in the electrical parts area by the capacitor. Ensure that ...

  • Page 79

    79 18.1.3. To remove power electronic controller 18.1.4. To remove discharge grille.

  • Page 80

    80 18.1.5. To remove control board 18.1.6. To remove cross flow fan and indoor fan motor.

  • Page 81

    81.

  • Page 82

    82 18.2. Outdoor unit removal procedure caution! When handling electronic controller, be careful of electrostatic discharge. 18.2.1. Removing the cabinet top plate and cabinet front plate 1. Remove the cabinet top plate (by removing the 4 screws). 2. Remove the 5 screws fixing the cabinet front plat...

  • Page 83

    83 18.2.4. Removing the propeller fan and fan motor 1. Remove the cabinet top plate and cabinet front plate. 2. Remove the propeller fan by removing the nut turning clockwise at its center. 3. Disconnect the connector of the fan motor from the control board. 4. Loosen the 4 screws at the fan motor m...

  • Page 84: 19 Technical Data

    84 19 technical data 19.1. Operation characteristics (cu-2re15mbe) 19.1.1. One indoor unit operation 19.1.1.1. Cs-mre7mke.

  • Page 85

    85.

  • Page 86

    86 19.1.1.2. Cs-mre9mke.

  • Page 87

    87.

  • Page 88

    88 19.1.2. Two indoor unit operation 19.1.2.1. Cs-mre7mke x2.

  • Page 89

    89.

  • Page 90

    90 19.1.2.2. Cs-mre9mke + cs-mre7mke.

  • Page 91

    91.

  • Page 92

    92 19.2. Operation characteristics (cu-2re18mbe) 19.2.1. One indoor unit operation 19.2.1.1. Cs-mre7mke.

  • Page 93

    93.

  • Page 94

    94 19.2.1.2. Cs-mre9mke.

  • Page 95

    95.

  • Page 96

    96 19.2.1.3. Cs-mre12mke.

  • Page 97

    97.

  • Page 98

    98 19.2.2. Two indoor unit operation 19.2.2.1. Cs-mre7mke x2.

  • Page 99

    99.

  • Page 100

    100 19.2.2.2. Cs-mre9mke x2.

  • Page 101

    101.

  • Page 102

    102 19.2.2.3. Cs-mre12mke x2.

  • Page 103

    103.

  • Page 104

    104 20 exploded view and replacement parts list 20.1. Indoor unit 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..

  • Page 105

    105 (note) • all parts are supplied from phaam, malaysia (vendor code: 00029488). • “o” marked parts are recommended to be kept in stock. Ref no. Part name & description qty cs-mre7mke cs-mre9mke cs-mre12mke remark 1 chassy complete 1 cwd50c1653 2 fan motor 1 arw7628ac o 3 cross flow fan complete 1 ...

  • Page 106

    106 20.2. Outdoor unit 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..

  • Page 107

    107 ref no. Description & name q’ty cu-2re15mbe cu-2re18mbe remark 1 chassy assy 1 cwd50k2058 2 fan motor bracket 1 cwd541089 2a screw - fan motor bracket 2 cwh551217 3 fan motor, ac 50w single 1 cwa981072 o 3a screw - fan motor mount 4 cwh551016j 4 propeller fan 1 cwh03k1013 5 nut - propeller fan 1...

  • Page 108

    108 (note) • all parts are supplied from phaam, malaysia (vendor code: 00029488). • “o” marked parts are recommended to be kept in stock. [phaam] printed in malaysia fb0311-0 57 installation instruction 1 cwf614740 58 installation instruction 1 cwf614741 59 installation instruction 1 cwf614742 60 in...