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Panasonic CS-MRE12PKE Service Manual

Other manuals for CS-MRE12PKE: Operating Instructions Manual

Summary of CS-MRE12PKE

  • Page 1

    © panasonic corporation 2013 order no: papamy1301063ce air conditioner indoor unit outdoor unit cs-mre7pke cs-mre9pke cs-mre12pke cu-2re15pbe cu-2re18pbe destination europe precaution of low temperature in order to avoid frostbite, be assured of no refrigerant leakage during the installation or repa...

  • Page 2: Table of Contents

    2 table of contents 1. Safety precautions ............................................. 3 2. Specifications ..................................................... 5 2.1 cs-mre7pke cs-mre9pke cs-mre12pke ............................................ 5 2.2 cu-2re15pbe ......................................

  • Page 3: 1. Safety Precautions

    3 caution warning warning 1. Safety precautions š read the following “safety precautions” carefully before perform any servicing. š 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. š...

  • 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. Specifications

    5 2. Specifications 2.1 cs-mre7pke cs-mre9pke cs-mre12pke model indoor cs-mre7pke cs-mre9pke 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 model indoor cs-mre7pke cs-mre9pke dimension height (i/d) mm (inch) 290 (11-7/16) width (i/d) mm (inch) 870 (34-9/32) depth (i/d) mm (inch) 214 (8-7/16) weight net (i/d) kg (lb) 9 (20) piping pipe diameter (liquid / gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) 6.35 (1/4) / 9.52 (3/8) drain hose inner di...

  • Page 7

    7 model indoor cs-mre12pke performance test condition eurovent power supply phase, hz single, 50 v 230 min. Mid. Max. Cooling 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 (h...

  • Page 8

    8 model indoor cs-mre12pke piping pipe diameter (liquid / gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) drain hose inner diameter mm 16 length mm 650 indoor heat exchanger fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 21 size (w x h x l) mm 610 x 315 x 25.4 air filter mater...

  • Page 9

    9 2.2 cu-2re15pbe item unit outdoor unit indoor unit combination 2.0kw + 2.5kw 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 3...

  • Page 10

    10 item unit outdoor unit dry bulb wet bulb indoor operation range cooling maximum °c 32 23 minimum °c 16 11 heating maximum °c 30 — minimum °c 16 — outdoor operation range cooling maximum °c 43 26 minimum °c 16 11 heating maximum °c 24 18 minimum °c -10 -11 note specifications are subject to change...

  • Page 11

    11 2.3 cu-2re18pbe item unit outdoor unit indoor unit combination 2.5kw + 2.5kw 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 item unit outdoor unit dry bulb wet bulb indoor operation range cooling maximum °c 32 23 minimum °c 16 11 heating maximum °c 30 — minimum °c 16 — outdoor operation range cooling maximum °c 43 26 minimum °c 16 11 heating maximum °c 24 18 minimum °c -10 -11 note specifications are subject to change...

  • Page 13

    13 multi split combination possibility: o a single outdoor unit enables air conditioning of up to two separate rooms for cu-2re15pbe, cu-2re18pbe. Indoor unit : cs-mre7/9/12pke outdoor unit : cu-2re15pbe 2 room 1 room indoor unit capacity (kw) total indoor capacity (kw) indoor unit capacity (kw) tot...

  • Page 14: 3.   Features

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

  • 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 7.1 indoor unit.

  • Page 20

    20 7.2 outdoor unit.

  • Page 21

    21 8. Wiring connection diagram 8.1 indoor unit.

  • Page 22

    22 8.2 outdoor unit.

  • Page 23

    23 9. Electronic circuit diagram 9.1 indoor unit.

  • Page 24

    24 9.2 outdoor unit.

  • Page 25: 10.  Printed Circuit Board

    25 10. Printed circuit board 10.1 indoor unit 10.1.1 main printed circuit board 10.1.2 indicator and receiver printed circuit board.

  • Page 26

    26 10.2 outdoor unit.

  • Page 27: 11. Installation

    27 11. Installation information 11.1 cu-2re15pbe 11.1.1 check points 11.1.2 the shapes of the 3-way valve caps of the outdoor unit have been changed š accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed. š firmly tighten the 3-way valve caps by...

  • Page 28

    28 11.2 cu-2re18pbe 11.2.1 check points 11.2.2 the shapes of the 3-way valve caps of the outdoor unit have been changed š accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed. š firmly tighten the 3-way valve caps by hand, and then tighten them ...

  • Page 29: 12. Installation

    29 12. Installation instruction 12.1 select the best location 12.1.1 indoor unit š do not install the unit in excessive oil fume area such as kitchen, workshop and etc. š there should not be any heat source or steam near the unit. š there should not be any obstacles blocking the air circulation. š a...

  • Page 30

    30 12.2 indoor unit 12.2.1 how to fix installation plate the mounting wall is strong and solid enough to prevent it from the vibration. Model dimension c d e f g h mre7*** mre9*** mre12*** 490 mm 82 mm 439 mm 432 mm 43 mm 95 mm the center of installation plate should be at more than c at right and l...

  • Page 31

    31 12.2.3.1 for the right rear piping 12.2.3.2 for the right and right bottom piping 12.2.3.3 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 60245 iec 57 or...

  • 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 nut ...

  • Page 34

    34 12.3 outdoor unit 12.3.1 install the outdoor unit š 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 stron...

  • Page 35

    35 12.3.3 evacuation of the equipment when installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure. 1 connect a charging hose with a push pin to the low and high side of a charging set and the service port of the 3-way valve. O be sure t...

  • Page 36

    36 4 connect the power supply cord and connection cable between indoor unit and outdoor unit according to the diagram as shown. 5 secure the power supply cord and connection cables onto the control board with the holder. 6 attach the control board cover back to the original position with screw. 7 fo...

  • Page 37: 13.  Operation and Control

    37 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 38

    38 13.1.4.2 heating temperature sampling control š temperature sampling is controlled by outdoor unit where room temperature for all power supply on indoor unit could be obtained. š when capability supply to the indoor unit is off and the compressor is on, the indoor fan motor is stopped. During thi...

  • Page 39

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

  • Page 40

    40 13.4.2 horizontal airflow š the horizontal airflow direction louvers can be adjusted manually by hand. 13.5 timer control 13.5.1 on timer control š on timer can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a comfortable ...

  • Page 41: 14. Operation

    41 14. Operation control 14.1 cooling operation 14.1.1 outdoor fan control š when cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below: 14.1.2 annual cooling control š this control is to enable cooling operation when outdoor...

  • Page 42

    42 14.2 heating operation 14.2.1 outdoor fan control š when heating operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below for heating overload control: 14.2.2 heating room temp sampling control š to improve the judgment accuracy, ind...

  • Page 43

    43 š control contents compressor frequency and outdoor fan speed maximum limit is set. Adjust accordingly. Compressor frequency outdoor fan speed cool/quiet #30 hz #400 rpm š cancel condition o indoor fan speed is equal or higher than lo fan. O > 1 operation indoor unit. O in any cooling overload zo...

  • Page 44: 15. Protection

    44 15. Protection control 15.1 freeze prevention control (cool) š when received freeze prevention signal from indoor unit, the compressor frequency changes according to indoor heat exchanger temperature. š when indoor unit request capability off due to freeze condition, immediately the capability su...

  • Page 45

    45 15.5 cooling overload control (cool) š this control detect outdoor pipe temperature and perform the compressor frequency restriction during cooling operation. 15.6 heating overload control (heat) š this control detect indoor pipe temperature and perform the compressor frequency restriction during...

  • Page 46

    46 15.8 deice control š when outdoor pipe temperature and outdoor air temperature is low, deice operation starts where indoor fan motor and outdoor fan motor stop, indoor unit horizontal vane close and operation led blink with compressor on. 15.9 time delay safety control (restart control) š the com...

  • Page 47

    47 15.13 compressor protection control (gas leak detection control 1) š control start conditions o for 5 minutes, the compressor continuously operates and total current is low. O during cooling or soft dry operation: indoor intake temperature — indoor piping temperature is below 4°c. O during heatin...

  • Page 48: 16. Servicing

    48 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 operation...

  • Page 49

    49 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 sta...

  • Page 50: 17. Troubleshooting

    50 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 51

    51 17.1.1 relationship between the condition of the air conditioner and pressure and electric current condition of the air conditioner cooling mode heating mode low pressure high pressure electric current during operation low pressure high pressure electric current during operation insufficient refr...

  • Page 52

    52 17.2 breakdown self diagnosis function 17.2.1 self diagnosis function (three digits alphanumeric code) š once abnormality has occurred during operation, the unit will stop its operation, and timer led blinks. š although timer led goes off when power supply is turned off, if the unit is operated u...

  • Page 53

    53 17.3 self diagnosis function.

  • Page 54

    54.

  • Page 55

    55 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 š faulty in...

  • Page 56

    56 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 š wrong models interconnected. š wrong indoor unit or outdoor unit pcbs mounted. š indoor...

  • Page 57

    57 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 š faulty connector conne...

  • Page 58

    58 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 š faulty connector connection....

  • Page 59

    59 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 š ct defect...

  • Page 60

    60 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 š operation stops due to short circuit insi...

  • Page 61

    61 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 š faulty connector connect...

  • Page 62

    62 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 š faulty connector connection. š fau...

  • Page 63

    63 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 š faulty connector connection. š f...

  • Page 64

    64 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 š faulty co...

  • Page 65

    65 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 š wrong models interconnected. š wrong indoor unit and outdoor unit pcbs used. š indoor unit or outd...

  • Page 66

    66 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 š faulty connector connection. š faul...

  • Page 67

    67 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 š operation stops due to short circuit inside the fan motor winding. š oper...

  • Page 68

    68 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 š air short circuit at i...

  • Page 69

    69 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 š air short circ...

  • Page 70

    70 17.4.16 f11 (4-way valve abnormality) malfunction decision conditions š when heating operation, when indoor pipe temperature is below 10°c š when cooling operation, when indoor pipe temperature is above 45°c malfunction caused š connector in poor contact š faulty sensor š faulty outdoor unit pcb ...

  • Page 71

    71 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 unit ...

  • Page 72

    72 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 š dc voltage peak du...

  • Page 73

    73 17.4.19 f91 (refrigeration cycle abnormality) malfunction caused š faulty indoor intake air or pipe temperature sensor š 2/3 way valve closed š refrigerant shortage (refrigerant leakage) š clogged expansion valve or strainer š faulty outdoor unit š poor compression of compressor troubleshooting.

  • Page 74

    74 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 š compressor terminal disconnect š faulty outdoor pcb š faulty compressor tro...

  • Page 75

    75 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 š air short circuit at indoor unit š dust accumulation ...

  • Page 76

    76 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 o compressor overheating: during operation of cooling and heating, when the compressor ol is activa...

  • Page 77

    77 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 š faulty compressor tank temperature sensor š 2/3 way valve closed ...

  • Page 78

    78 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 transformer (ct) with the compressor ...

  • Page 79

    79 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 80

    80 warning 18. Disassembly and assembly instructions high voltages are 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. 18.1 indoor electronic...

  • Page 81

    81 figure 3 figure 4 18.1.3 to remove discharge grille figure 5 10. Pull out to remove the drain hose from the discharge grille 11. Then pull the discharge grille downward gently to dismantle it.

  • Page 82

    82 18.1.4 to remove control board figure 6 18.1.5 to remove cross flow fan and indoor fan motor figure 7 figure 8 15. Remove the bearing by pulling it out gently 14. Remove the screw from the evaporator. 13. Remove the screw that holding the cross flow fan and fan motor axis. 12. Remove 4 screws hol...

  • Page 83

    83 figure 9 figure 10 16. Push the holdfast to the left and lift up the evaporator. 18. Fan motor can be removed after the removal of cross flow fan. Reminder: to reinstall the fan motor, adjust the fan motor connector to 45° towards you before fixing control board. 17. Remove the cross flow fan fro...

  • Page 84

    84 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 5 screws). 2 remove the 8 screws fixing the cabinet front plate, r...

  • Page 85

    85 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 mounti...

  • Page 86: 19. Technical

    86 19. Technical data 19.1 operation characteristics (cu-2re15pbe) 19.1.1 one indoor unit operation 19.1.1.1 cs-mre7pke.

  • Page 87

    87.

  • Page 88

    88 19.1.1.2 cs-mre9pke.

  • Page 89

    89.

  • Page 90

    90 19.1.2 two indoor unit operation 19.1.2.1 cs-mre7pke x2.

  • Page 91

    91.

  • Page 92

    92 19.1.2.2 cs-mre9pke + cs-mre7pke.

  • Page 93

    93.

  • Page 94

    94 19.2 operation characteristics (cu-2re18pbe) 19.2.1 one indoor unit operation 19.2.1.1 cs-mre7pke.

  • Page 95

    95.

  • Page 96

    96 19.2.1.2 cs-mre9pke.

  • Page 97

    97.

  • Page 98

    98 19.2.1.3 cs-mre12pke.

  • Page 99

    99.

  • Page 100

    100 19.2.2 two indoor unit operation 19.2.2.1 cs-mre7pke x2.

  • Page 101

    101.

  • Page 102

    102 19.2.2.2 cs-mre9pke x2.

  • Page 103

    103.

  • Page 104

    104 19.2.2.3 cs-mre12pke x2.

  • Page 105

    105.

  • Page 106

    106 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 107

    107 safety ref. No. Part name & description qty. Cs-mre7pke cs-mre9pke cs-mre12pke remark 1 chassis complete 1 cwd50c1653 ← ← 2 fan motor 1 arw7628ac ← ← o 3 cross-flow fan complete 1 cwh02c1076 ← ← 4 bearing assy 1 cwh64k007 ← ← 5 screw - cross-flow fan 1 cwh551146 ← ← 7 evaporator 1 cwb30c2960 cwb...

  • Page 108

    108 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 109

    109 safety ref. No. Part name & description qty. Cu-2re15pbe cu-2re18pbe remark 1 chassis assy 1 cwd52k1277 ← 2 fan motor bracket 1 cwd541167 ← 3 fan motor, ac 50w single 1 arw6405ac ← o 3a screw-fan motor bracket 2 cwh551217 ← 3b screw-fan motor mount 4 cwh55252j ← 4 propeller fan 1 cwh03k1066 ← 5 ...

  • Page 110

    110 safety ref. No. Part name & description qty. Cu-2re15pbe cu-2re18pbe remark 61 operating instruction 1 cwf568940 ← 62 installation instruction 1 cwf615766 ← 63 installation instruction 1 cwf615767 ← 64 installation instruction 1 cwf615768 ← 65 installation instruction 1 cwf615769 ← 66 installati...