Panasonic CS-MRE12MKE User Manual Download

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© 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

-----------------------------------------------

3

2 Specifications

-----------------------------------------------------

5

2.1. CS-MRE7MKE CS-MRE9MKE CS-

MRE12MKE------------------------------------------------- 5

2.2. CU-2RE15MBE -------------------------------------------- 9
2.3. CU-2RE18MBE ------------------------------------------- 11

3 Features

------------------------------------------------------------

14

4 Location of Controls and Components

------------------

15

4.1. Indoor Unit--------------------------------------------------15
4.2. Outdoor Unit -----------------------------------------------15
4.3. Remote Control -------------------------------------------15

5 Dimensions

--------------------------------------------------------

16

5.1. Indoor Unit--------------------------------------------------16
5.2. Outdoor Unit -----------------------------------------------17

6 Refrigeration Cycle Diagram

--------------------------------

18

7 Block Diagram

----------------------------------------------------

19

8 Wiring Connection Diagram

---------------------------------

20

8.1. Indoor Unit--------------------------------------------------20
8.2. Outdoor Unit -----------------------------------------------21

9 Electronic Circuit Diagram

-----------------------------------

22

9.1. Indoor Unit ------------------------------------------------- 22
9.2. Outdoor Unit----------------------------------------------- 23

10 Printed Circuit Board

------------------------------------------

24

10.1. Indoor Unit ------------------------------------------------- 24
10.2. Outdoor Unit----------------------------------------------- 26

11 Installation Information

---------------------------------------

27

11.1. CU-2RE15MBE------------------------------------------- 27
11.2. CU-2RE18MBE------------------------------------------- 28

12 Installation Instruction

----------------------------------------

29

12.1. Select the Best Location ------------------------------- 29
12.2. Indoor Unit ------------------------------------------------- 30
12.3. Outdoor Unit----------------------------------------------- 34

13 Operation and Control

----------------------------------------

36

13.1. Basic Function -------------------------------------------- 36
13.2. Indoor Fan Motor Operation--------------------------- 37
13.3. Indoor Fan Motor Operation--------------------------- 38
13.4. Outdoor Fan Motor Operation ------------------------ 38
13.5. Airflow Direction ------------------------------------------ 39

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Summary of Contents for CS-MRE12MKE

Page 1: ...ntrol 15 5 Dimensions 16 5 1 Indoor Unit 16 5 2 Outdoor Unit 17 6 Refrigeration Cycle Diagram 18 7 Block Diagram 19 8 Wiring Connection Diagram 20 8 1 Indoor Unit 20 8 2 Outdoor Unit 21 9 Electronic Circuit Diagram 22 9 1 Indoor Unit 22 9 2 Outdoor Unit 23 10 Printed Circuit Board 24 10 1 Indoor Unit 24 10 2 Outdoor Unit 26 11 Installation Information 27 11 1 CU 2RE15MBE 27 11 2 CU 2RE18MBE 28 12 ...

Page 2: ...oling Soft Dry Operation 43 15 8 Protection Control for Heating Operation 44 16 Servicing Mode 45 16 1 Auto OFF ON Button 45 16 2 Remote Control Button 46 17 Troubleshooting Guide 47 17 1 Refrigeration Cycle System 47 17 2 Breakdown Self Diagnosis Function 49 17 3 Self Diagnosis Function 50 17 4 Self diagnosis Method 53 18 Disassembly and Assembly Instructions 78 18 1 Indoor Electronic Controllers...

Page 3: ...ring standard regulation and the installation instruction An independent circuit and single outlet must be used If electrical circuit capacity is not enough or defect found in electrical work it will cause electrical shock or fire 9 This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker ELCB or Residual Current Device RCD Otherwise it may cause electrical shock a...

Page 4: ... method If the flare nut is over tightened after a long period the flare may break and cause refrigerant gas leakage 4 Do not touch outdoor unit air inlet and aluminium fin It may cause injury 5 Select an installation location which is easy for maintenance 6 Pb free solder has a higher melting point than standard solder typically the melting point is 50 F 70 F 30 C 40 C higher Please use a high te...

Page 5: ...oor Fan Type Cross flow Fan Cross flow Fan Material ASG20K1 ASG20K1 Motor Type DC 8 poles DC 8 poles Input Power W 47 3 47 3 Output Power W 40 40 Speed Lo Cool rpm 790 820 Heat rpm 790 820 Me Cool rpm 880 930 Heat rpm 890 950 Hi Cool rpm 980 1050 Heat rpm 990 1090 SHi Cool rpm 1080 1150 Heat rpm 1090 1190 Moisture Removal L h Pt h 1 3 2 7 1 5 3 2 Indoor Airflow Lo Cool m3 min ft3 min 7 9 279 7 0 2...

Page 6: ...ow temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without prior notice for further improvement Indoor Heat Exchanger Fin Material Aluminium Pre Coat Aluminium Pre Coat Fin Type Slit Fin Slit Fin Row x Stage x FPI 2 x 15 x 17 2 x 15 x 21 Size W x H x L mm 610 x 315 x 25 4 610 x 315 x 25 4 Air Filter Material ...

Page 7: ...ower W 40 Speed Lo Cool rpm 900 Heat rpm 900 Me Cool rpm 1010 Heat rpm 1080 Hi Cool rpm 1120 Heat rpm 1270 SHi Cool rpm 1220 Heat rpm 1320 Moisture Removal L h Pt h 1 8 3 8 Indoor Airflow Lo Cool m3 min ft3 min 8 0 282 Heat m3 min ft3 min 8 0 282 Me Cool m3 min ft3 min 9 3 328 Heat m3 min ft3 min 10 4 367 Hi Cool m3 min ft3 min 10 9 385 Heat m3 min ft3 min 11 4 402 SHi Cool m3 min ft3 min 11 3 399...

Page 8: ...2 8 F Wet Bulb 3 Heating low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 2 1 C 4 Heating extreme low temperature capacity Input Power and COP measured at 230 V indoor temperature 20 C outdoor 7 8 C 5 Specifications are subjected to change without prior notice for further improvement Air Filter Material Polypropelene Type One touch Power Supply Outdoor...

Page 9: ... Current A 12 0 Maximum Input Power W 2 73k Starting Current A 6 10 Circuit Breaker Capacity A 16 Dimension Height mm 540 Width mm 780 70 Depth mm 289 Net Weight kg 38 Connection Cable 3 1 Earth ø1 5 mm2 Pipe Length Range 1 room m 3 20 Maximum Pipe Length Total Room m 30 Refrigerant Pipe Diameter Liquid Side mm inch 6 35 1 4 Gas Side mm inch 9 52 3 8 Compressor Type Hermetic Motor Motor Type Brush...

Page 10: ...otice 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 18 Minimum 10 11 ...

Page 11: ...m Current A 12 0 Maximum Input Power W 2 73k Starting Current A 6 95 Circuit Breaker Capacity A 16 Dimension Height mm 540 Width mm 780 70 Depth mm 289 Net Weight kg 38 Connection Cable 3 1 Earth ø1 5 mm2 Pipe Length Range 1 room m 3 20 Maximum Pipe Length Total Room m 30 Refrigerant Pipe Diameter Liquid Side mm inch 6 35 1 4 Gas Side mm inch 9 52 3 8 Compressor Type Hermetic Motor Motor Type Brus...

Page 12: ...otice 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 18 Minimum 10 11 ...

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: ...Long piping up to 15 meters 0 75 1 75HP during single split connection only Easy to use remote control Quality Improvement Random auto restart after power failure for safety restart operation Gas leakage protection Prevent compressor reverse cycle Inner protector to protect Compressor Noise prevention during soft dry operation Operation Improvement 24 hour timer setting Serviceability Improvement ...

Page 15: ...15 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...

Page 16: ...16 5 Dimensions 5 1 Indoor Unit ...

Page 17: ...17 5 2 Outdoor Unit ...

Page 18: ...18 6 Refrigeration Cycle Diagram ...

Page 19: ...19 7 Block Diagram ...

Page 20: ...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: ...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: ...ps 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 them up by another 30 degrees or so one twelfth of a full turn using a spanner or adjustable spanner ...

Page 28: ...oor 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 them up by another 30 degrees or so one twelfth of a full turn using a spanner or adjustable spanner ...

Page 29: ...ct sunlight or rain be careful that heat radiation from the condenser is not obstructed There should not be any animal or plant which could be affected by hot air discharged Keep the spaces indicated by arrows from wall ceiling fence or other obstacles Do not place any obstacles which may cause a short circuit of the discharged air If piping length is over the piping length for additional gas addi...

Page 30: ...vel gauge 2 Drill the piping plate hole with ø70 mm hole core drill Line according to the left and right side of the installation plate The meeting point of the extended line is the center of the hole Another method is by putting measuring tape at position as shown in the diagram above The hole center is obtained by measuring the distance namely 128 mm for left and right hole respectively Drill th...

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: ... 3 Bind all the indoor and outdoor connection cable with tape and route the connection cable via the escapement 4 Remove the tapes and connect the connection cable between indoor unit and outdoor unit according to the diagram below 5 Secure the connection cable onto the control board with the holder clamper Ensure the colour of wires of outdoor unit and the terminal Nos are the same to the indoor ...

Page 33: ... 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 onto the copper pipes ...

Page 34: ...e wrench to the specified torque as stated in the table 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 side of a charging set and the service port of the 3 way valve Be sure to connect the end of the charging hose with the push pin to t...

Page 35: ...supply cord and connection cable onto the control board with the holder 6 Attach the control board cover back to the original position with screw 7 For wire stripping and connection requirement refer to instruction of indoor unit Note Isolating Devices Disconnecting means should have minimum 3 0 mm contact gap Earth wire shall be Yellow Green Y G in colour and longer than other AC wires for safety...

Page 36: ...and it is updated continuously whenever the electrical power is supplied to the unit 13 1 2 Cooling Operation 13 1 2 1 Thermostat control Capability supply to indoor unit is OFF Expansion valve closed when Intake Air Temperature Internal setting temperature 2 0 C Capability resume supply to indoor unit after waiting for 3 minutes if the Intake Air temperature Internal setting temperature Capabilit...

Page 37: ...ure During operation mode judgment indoor fan motor with speed of Lo and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature The operation mode is decided based on below chart Every 180 minutes the indoor and outdoor temperature is judge Based on remote control setting temperature the value of T1 will increase up to 10 C T2 will decrease by 3 C and ...

Page 38: ...art If the fan motor counter becomes 7 times then H19 fan motor error is detected Operation stops and cannot on back 13 3 Indoor Fan Motor Operation 13 3 1 Residual Heat Removal Control To prevent high pressure at indoor unit when heating mode thermostat off condition or power supply OFF indoor fan continue to operate at controlled fan speed for maximum 30 seconds then stop 13 4 Outdoor Fan Motor ...

Page 39: ...on can be set using remote control the angles of the vane are as stated above and the positions of the vane are as Figure 2 below When the air conditioner is stopped using remote control the vane will shift to close position 13 6 Timer Control 13 6 1 ON Timer Control 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...

Page 40: ...ion Indoor unit will resume previous mode include unit standby mode 13 8 Indication Panel Note If POWER LED is blinking 0 5 seconds ON 0 5 second OFF the possible operation of the unit are during Indoor Residual Heat Removal Hot Start during Deice operation operation mode judgment or ON timer sampling If POWER LED is blinking 2 5 seconds ON 0 5 second OFF the unit is in standby mode If TIMER LED i...

Page 41: ...e room temperature When the thermostat is set to OFF during 1 room operation the compressor and fan of the outdoor unit are stopped The outdoor unit fan is stopped 30 seconds after the compressor stops It takes about 180 seconds to restart operation when the compressor has been stopped Time delay safety control 14 2 Deice Operation During Heating operation the deice operation judgment method Accor...

Page 42: ...vated It restarts after 3 minutes Activation temperature 110 C Reset temperature 95 C DC peak current control When the inverter load current DC peak current exceeds the setting value 22 5A the compressor is stopped immediately If this happens within 30 seconds after it started operating it will restart one minute later if it happens after 30 seconds have elapsed since it started operating it will ...

Page 43: ...eds 45 C the compressor stops After 3 minutes Time delay safety control starts If this situation occurs 4 times within 30 minutes TIMER LED blinks F11 error During Heating operation 4 minutes after compressor started if the temperature of the indoor unit heat exchanger drops below 5 C the compressor stops After 3 minutes Time delay safety control starts If this situation occurs 4 times within 30 m...

Page 44: ...g indoor unit drops by more than 5 C to 5 C or below 3 minutes after compressor started The non operating indoor unit pipe temperature where outdoor air temperature above 5 C has dropped by more than 20 C to 5 C or lower When above conditions are satisfied the Timer LED blinks H41 error 15 8 Protection Control for Heating Operation 15 8 1 Overload Protection Control The compressor operating freque...

Page 45: ...ion 3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be activated if the Auto OFF ON button is pressed continuously for more than 11 seconds 3 beep sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition and press AC RESET button and then press any button at remote control to transmit and store the desired transmissi...

Page 46: ...T button continuously for 10 seconds by using pointer Press TIMER SET button until a beep sound is heard as confirmation of transmission code changed To change the air quality sensor sensitivity Press and release by using pointer Press the Timer Decrement button to select sensitivity 1 Low Sensitivity 2 Standard Default 3 Hi Sensitivity Confirm setting by pressing Timer Set button a Beep sound wil...

Page 47: ... problems before inspecting the refrigeration cycle Such problems include insufficient insulation problem with the power source malfunction of a compressor and a fan The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions the standard values for them are shown in the table on the right ...

Page 48: ...es after an operation is started Cooling Mode Heating Mode Low Pressure High Pressure Electric current during operating Low Pressure High Pressure Electric current during operating Condition of the air conditioner Insufficient refrigerant gas leakage Clogged capillary tube or Strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression ...

Page 49: ... display memorized error Protective operation status 1 Turn power on 2 Press the CHECK button on the remote controller continuously for 5 seconds 3 will be displayed on the remote controller display Note Display only for No transmitting signal no receiving sound and no Power LED blinking 4 Press the TIMER or button on the remote controller The code H00 no abnormality will be displayed and signal w...

Page 50: ... for 5s Indoor intake air temperature sensor open or short circuit Indoor intake air temperature sensor lead wire and connector H15 Compressor temperature sensor abnormality Continuous for 5s Compressor temperature sensor open or short circuit Compressor temperature sensor lead wire and connector H16 Outdoor current transformer CT abnormality Current transformer faulty or compressor faulty Outdoor...

Page 51: ... freezing abnormality 3 times happen within 40 minutes Wrong wiring and connecting pipe expansion valve leakage indoor heat exchanger sensor open circuit Check indoor outdoor connection wire and pipe Indoor heat exchanger sensor lead wire and connector Expansion valve lead wire and connector F90 Power factor correction PFC circuit protection 4 times happen within 10 minutes Power factor correction...

Page 52: ...appen within 30 minutes Compressor overheat Insufficient refrigerant F98 Total running current protection 3 times happen within 20 minutes Total current protection Check refrigeration system Power source or compressor lock F99 Outdoor direct current DC peak detection Continuous happen for 7 times Power transistor module current protection Power transistor module faulty or compressor lock LED 6 LED...

Page 53: ...transmission is checked whether it is normal Malfunction Caused Faulty indoor unit PCB Faulty outdoor unit PCB Indoor unit outdoor unit signal transmission error due to wrong wiring Indoor unit outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units Indoor unit outdoor unit signal transmission error due to disturbed power supply w...

Page 54: ...are interconnected Malfunction Caused Wrong models interconnected Wrong indoor unit or outdoor unit PCBs mounted Indoor unit or outdoor unit PCBs defective Indoor outdoor unit signal transmission error due to wrong wiring Indoor outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units Troubleshooting ...

Page 55: ...ction 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 connection Faulty sensor Faulty PCB Troubleshooting ...

Page 56: ...n 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 Faulty sensor Faulty PCB Troubleshooting ...

Page 57: ...ions 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 defective Outdoor PCB defective Compressor defective low compression Troubleshooting ...

Page 58: ...etermine abnormal fan motor feedback of rotation 2550rpm or 50rpm Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall IC malfunction Operation error due to faulty indoor unit PCB Troubleshooting ...

Page 59: ... 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 connection Faulty sensor Faulty PCB Troubleshooting ...

Page 60: ...ction 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 Faulty sensor Faulty PCB Troubleshooting ...

Page 61: ...ction 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 Faulty sensor Faulty PCB Troubleshooting ...

Page 62: ...nction 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 connector connection Faulty sensor Faulty PCB Troubleshooting ...

Page 63: ...alfunction 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 outdoor unit PCB defective Troubleshooting ...

Page 64: ...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 Faulty sensor Faulty PCB Troubleshooting ...

Page 65: ...eration is used to determine abnormal fan motor Malfunction Caused Operation stops due to short circuit inside the fan motor winding Operation stops due to breaking of wire inside the fan motor Operation stops due to breaking of fan motor lead wires Operation stops due to Hall IC malfunction Operation error due to faulty outdoor unit PCB Troubleshooting ...

Page 66: ...ature detected by the indoor pipe temperature sensor is above 60 C Malfunction Caused Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger 2 3 way valve closed Faulty indoor unit fan motor Excessive refrigerant Clogged expansion valve or strainer Faulty indoor pipe temperature sensor Faulty indoor unit PCB Troubleshooting ...

Page 67: ...l takes place when indoor pipe temperature is lower than 2 C Malfunction Caused Air short circuit at indoor unit Clogged indoor unit air filter Dust accumulation on the indoor unit heat exchanger 2 3 way valve closed Faulty indoor unit fan motor Refrigerant shortage refrigerant leakage Clogged expansion valve or strainer Faulty indoor pipe temperature sensor Faulty indoor unit PCB Troubleshooting ...

Page 68: ...onditions 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 PCB 4 way valve defective Troubleshooting ...

Page 69: ...rature 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 transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit s Malfunction Caused Wrong wiring connection Faulty sensor Faulty expansion valve Troubleshooting ...

Page 70: ...peration 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 due to power supply surge DC voltage peak due to compressor windings not uniform Faulty outdoor PCB Troubleshooting ...

Page 71: ...mality 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: ...ion 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 Troubleshooting ...

Page 73: ...ure data 61 C is detected by the outdoor pipe temperature sensor Malfunction Caused Air short circuit at indoor unit Dust accumulation on the indoor unit heat exchanger 2 3 way valve closed Faulty outdoor unit fan motor Excessive refrigerant Clogged expansion valve or strainer Faulty outdoor pipe temperature sensor Faulty outdoor unit PCB Troubleshooting ...

Page 74: ...vated Heat Sink Overheating During operation of cooling and heating when heat sink temperature data 90 C is detected by the heat sink temperature sensor Malfunction Caused IPM overheats due to short circuit of hot discharge air flow IPM overheats due to defective of outdoor fan motor IPM overheats due to defective of internal circuitry of IPM IPM overheats due to defective IPM temperature sensor M...

Page 75: ...ling 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 closed Refrigerant shortage refrigerant leakage Faulty outdoor unit PCB Faulty compressor Troubleshooting ...

Page 76: ...on 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 compressor running Malfunction Caused Excessive refrigerant Faulty outdoor unit PCB Troubleshooting ...

Page 77: ...ubleshooting Checking the power transistor Never touch any live parts for at least 10 minutes after turning off the circuit breaker If unavoidable necessary to touch a live part make sure the power transistor s supply voltage is below 50V using the tester For the UVW make measurement at the Faston terminal on the board of the relay connector Tester s negative terminal Power transistor UVW Power tr...

Page 78: ... 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 the capacitor has discharged sufficiently before proceeding with repair work Failure to heed this caution may result in electric shocks ...

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: ...er remove 1 screw 4 Remove the terminal cover remove 2 screws 5 Remove the terminal cover top and disconnect all the lead wires 3 fasten tab inside 18 2 3 Removing the Control Board 6 Remove the control board cover 7 Remove the 6 screws at the positions on the control board indicated by arrows 8 Disconnect the connectors and pipe sensor connected to the compressor and reactor 9 Remove the control ...

Page 83: ...e 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 mounting then remove the fan motor ...

Page 84: ...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: ...0 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: ...ECTRONIC CONTROLLER INDICATOR RECEIVER 1 CWA745300 O 16 INDICATOR HOLDER 1 CWD933021 17 SENSOR COMPLETE 1 CWA50C2401 O 18 DISCHARGE GRILLE COMPLETE 1 CWE20C3168 19 VERTICAL VANE 11 CWE241287 20 CONNECTING BAR 1 CWE261152 22 CONNECTING BAR 1 CWE261153 24 CONNECTING BAR 1 CWE261154 26 CONNECTING BAR 1 CWE261155 27 A S MOTOR DC SINGLE 12V 300 OHM 1 CWA981264 O 28 HORIZONTAL VANE 1 CWE24C1268 29 CAP D...

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: ...COIL COMPLETE 1 CWA43C2212 O 27 SOUND PROOF BOARD 1 CWH151032 28 HOLDER SENSOR 1 CWMH320001 29 SENSOR COMPLETE 1 CWA50C2088 O 30 HOLDER SENSOR 3 CWH32138 31 SENSOR COMPLETE 1 CWA50C2089 O 32 SENSOR COMPLETE 1 CWA50C2090 O 33 HOLDER SENSOR 2 CWH32074 34 SENSOR COMPLETE 1 CWA50C2097 O 35 NORMAL MODE LINE CHOKE COILS 1 G0A193M00001 O 36 ELECTRONIC CONTROLLER 1 CWA73C5423R CWA73C5424R O 37 TERMINAL BO...

Page 108: ... CWF614740 58 INSTALLATION INSTRUCTION 1 CWF614741 59 INSTALLATION INSTRUCTION 1 CWF614742 60 INSTALLATION INSTRUCTION 1 CWF614743 61 INSTALLATION INSTRUCTION 1 CWF614744 62 INSTALLATION INSTRUCTION 1 CWF614745 63 INSTALLATION INSTRUCTION 1 CWF614746 64 INSTALLATION INSTRUCTION 1 CWF614747 65 INSTALLATION INSTRUCTION 1 CWF614748 REF NO DESCRIPTION NAME Q TY CU 2RE15MBE CU 2RE18MBE REMARK ...

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