Mitsubishi Electric MUCFH-13NV-E3 Service Manual Download

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SERVICE MANUAL

FLOOR AND CEILING TYPE AIR CONDITIONERS

CONTENTS

1. TECHNICAL CHANGES ····································2

2. PART NAMES AND FUNCTIONS······················2

3. SPECIFICATION·················································4

4. NOISE CRITERIA CURVES ······························ 5

5. OUTLINES AND DIMENSIONS ·························6

6. WIRING DIAGRAM ············································7

7. REFRIGERANT SYSTEM DIAGRAM ················8

8. PERFORMANCE CURVES ································9

9. MICROPROCESSOR CONTROL ····················16

10. SERVICE FUNCTIONS·····································25

11. TROUBLESHOOTING ······································26

12. DISASSEMBLY INSTRUCTIONS·····················35

13. PARTS LIST······················································39

14. OPTIONAL PARTS···········································43

Wireless type
Model

MCFH-13NV-

(WH)

·MUCFH-13NV-

(When installed on the ceiling)

(When installed on the floor)

MCFH-13NV -

No. OB240

Refer to the Service Manual OB227 REVISED EDITION-B when MCFH-13NV

is connected

with MXZ-32RV-

as multi system units.

Summary of Contents for MUCFH-13NV-E3

Page 1: ... DIAGRAM 8 8 PERFORMANCE CURVES 9 9 MICROPROCESSOR CONTROL 16 10 SERVICE FUNCTIONS 25 11 TROUBLESHOOTING 26 12 DISASSEMBLY INSTRUCTIONS 35 13 PARTS LIST 39 14 OPTIONAL PARTS 43 Wireless type Model MCFH 13NV WH MUCFH 13NV E3 E3 When installed on the ceiling When installed on the floor MCFH 13NV E3 No OB240 Refer to the Service Manual OB227 REVISED EDITION B when MCFH 13NV is connected with MXZ 32RV...

Page 2: ...ction Air cleaning filter white bellows type option Front panel Receiving section Operation indicator lamp Horizontal vane Vertical vanes Emergency operation switch When installed on the ceiling 2 TECHNICAL CHANGES 1 MCFH 13NV MCFH 13NV 1 Indoor model name has changed 2 MCFH 13NV became possible to connect with MXZ 32RV as multi system units MUCFH 13NV MUCFH 13NV 1 Outdoor model has changed E3 E2 ...

Page 3: ...CT button FAN SPEED CONTROL button ON TIMER button CLOCK SET button HR button MIN button TIMER SET button TEMPERATURE buttons VANE CONTROL button SWING button OFF TIMER button RESET button MCFH 13NV E3 OUTDOOR UNIT MUCFH 13NV E3 Air inlet Piping Drain hose Air outlet Drain outlet back and side REMOTE CONTROLLER ...

Page 4: ...stance at 20 Model Winding resistance at 20 Model Winding resistance at 20 Single phase 220 240V 50Hz Cooling 3 7 1 5 6 2 6 4 1 310 1 400 96 91 5 54 5 72 2 82 2 64 Heating 4 0 5 4 5 8 1 130 1 220 95 88 4 74 5 12 3 54 3 28 38 5 46 47 49 1 120 1 260 700 740 1 35 RH 231VHAT 1 100 C R2 11 C S3 97 RB4V25 AA or AB WHT BLK 182 2 BLK YLW 68 9 YLW BLU 47 5 BLU BRN 31 5 BRN RED 22 9 RA6V33 CA WHT BLK 176 BL...

Page 5: ...Cooling DB 27 WB 19 Heating DB 20 WB APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE Hi 220 240V NOTCH 46 47 SPL dB A LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR BAND CENTER FREQUENCIES Hz Test conditions Cooling DB 35 WB 24 Heating DB 7 WB 6 APPROXIMATE THRESHOLD OF HEARING FOR ...

Page 6: ...MCFH 13NV E3 MUCFH 13NV E3 320 25 4 3 3 5 155 90 104 74 260 10 780 500 122 40 540 320 285 255 Service panel Gas refrigerant pipe joint Refrigerant pipe flared 12 7 Liquid refrigerant pipe joint Refrigerant pipe flared 6 35 Airout Air in Air in 109 32 110 147 Drainage 3holes 33 Unit mm If clearance behind the outdoor units only 40B or 50B side A must be fully open 10cm or more 10cm or more 10cm or ...

Page 7: ...4 SR142 SR143 LDFM BLK BLU YLW SR141 LDFVL BRN LDCOM LDC11 LDC12 WHT 2 2 ELECTRONIC CONTROL P C BOARD C11 RED ORN CN 112 w RED YLW BLU BLK BRN GRN YLW WHT ORN RED RT12 MF 220 240V 12V DC 5 6 4 8 1 2 3 7 N 2 12VDC REMOTE CONTROLLER FOR MULTI SYSTEM TO OUTDOOR UNIT CONNECTING 3 PE W W W W W W 220 240V 12V DC 3 4 WHT BLK RED MF N 4 3 2 1 RT61 CN730 F61 SR61 GRN YLW 3 R C WHT RED BLK BLU C1 52C MC 21S...

Page 8: ... with heat insulator Refrigerant pipe Option 6 35 with heat insulator INDOOR UNIT OUTDOOR UNIT MCFH 13NV E3 MUCFH 13NV E3 Length m ft A 15 49 Gas 12 7 1 2 Liquid 6 35 1 4 Piping size O D mm in Model MCFH 13NV E3 A Refrigerant piping Max length 15m 49ft Max Height difference 5m 16ft Height difference should be within 5m regardless of which unit indoor or outdoor position is high Outdoor unit precha...

Page 9: ... temperature difference 1 Attach at least 2 sets of wet and dry bulb thermometers to the indoor air intake as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The thermometers must be attached to the position where air speed is high 2 Attach at least 2 sets of wet and dry bulb thermometers to the outdoor air intake Cover the thermometers to prevent ...

Page 10: ...onversion factor is 1 MPa G 10 2 kgf f f G 18 32 50 60 70 Ambient temperature Ambient humidity Outdoor low pressure 50 60 70 Ambient temperature Ambient humidity Outdoor unit current A Ambient temperature Outdoor unit current A HEAT operation Condition Indoor Dry bulb temerature 20 0 Wet bulb temerature 14 5 Outdoor Dry bulb temerature 7 15 20 Wet bulb temerature 6 12 14 5 MPa G kgf F G 15 20 25 3...

Page 11: ... 42 1362 27 26 5 11 1 53 0 30 1258 4 96 1 49 0 30 1323 4 88 1 47 0 30 1362 4 74 1 42 0 30 1402 28 18 4 35 3 56 0 82 1048 4 16 3 41 0 82 1100 4 00 3 28 0 82 1153 3 85 3 16 0 82 1205 28 20 4 53 3 17 0 70 1100 4 35 3 04 0 70 1166 4 22 2 95 0 70 1192 4 07 2 85 0 70 1245 28 22 4 72 2 74 0 58 1140 4 55 2 64 0 58 1212 4 44 2 58 0 58 1245 4 26 2 47 0 58 1297 28 24 4 96 2 28 0 46 1192 4 77 2 20 0 46 1258 4...

Page 12: ...0 42 1539 27 26 4 48 1 34 0 30 1493 4 22 1 27 0 30 1559 4 09 1 23 0 30 1592 28 18 3 63 2 97 0 82 1284 3 33 2 73 0 82 1362 3 20 2 62 0 82 1389 28 20 3 81 2 67 0 70 1336 3 55 2 49 0 70 1402 3 42 2 40 0 70 1441 28 22 4 03 2 34 0 58 1389 3 77 2 19 0 58 1467 3 64 2 11 0 58 1493 28 24 4 26 1 96 0 46 1441 4 00 1 84 0 46 1507 3 89 1 79 0 46 1539 28 26 4 48 1 52 0 34 1493 4 22 1 43 0 34 1559 4 09 1 39 0 34...

Page 13: ...08 0 42 1274 4 77 2 00 0 42 1344 4 66 1 96 0 42 1386 4 51 1 90 0 42 1456 27 26 5 11 1 53 0 30 1344 4 96 1 49 0 30 1414 4 88 1 47 0 30 1456 4 74 1 42 0 30 1498 28 18 4 35 3 56 0 82 1120 4 16 3 41 0 82 1176 4 00 3 28 0 82 1232 3 85 3 16 0 82 1288 28 20 4 53 3 17 0 70 1176 4 35 3 04 0 70 1246 4 22 2 95 0 70 1274 4 07 2 85 0 70 1330 28 22 4 72 2 74 0 58 1218 4 55 2 64 0 58 1295 4 44 2 58 0 58 1330 4 2...

Page 14: ... 66 1428 3 55 2 34 0 66 1498 3 42 2 26 0 66 1540 27 22 4 03 2 18 0 54 1484 3 77 2 04 0 54 1568 3 64 1 97 0 54 1596 27 24 4 26 1 79 0 42 1540 4 00 1 68 0 42 1610 3 89 1 63 0 42 1645 27 26 4 48 1 34 0 30 1596 4 22 1 27 0 30 1666 4 09 1 23 0 30 1701 28 18 3 63 2 97 0 82 1372 3 33 2 73 0 82 1456 3 20 2 62 0 82 1484 28 20 3 81 2 67 0 70 1428 3 55 2 49 0 70 1498 3 42 2 40 0 70 1540 28 22 4 03 2 34 0 58 ...

Page 15: ...4 26 2 16 848 2 68 994 3 16 1096 3 68 1175 4 20 1232 4 68 1266 5 20 1300 OUTDOOR DB INDOOR 10 5 0 5 10 15 20 DB Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 2 52 793 3 04 952 3 56 1074 4 08 1159 4 60 1232 5 08 1269 5 60 1293 21 2 40 854 2 88 1013 3 40 1122 3 88 1208 4 40 1269 4 88 1305 5 38 1354 26 2 16 915 2 68 1074 3 16 1183 3 68 1269 4 20 1330 4 68 1366 5 20 1403 CAPACITY 4 0 kW I...

Page 16: ...P ON OFF button on the remote controller and restarted within 2 hours in I FEEL CONTROL mode the system operates in previous mode automatically regardless of the room temperature Example Previous operation COOL mode of I FEEL CONTROL or COOL mode When the system is restarted after 2 hours and more the operation mode is determined by the room temperature at start up of the operation Restart COOL mo...

Page 17: ...sor changes the set temperature considering the room temperature the frequency of pressing TOO COOL or TOO WARM button and the user s preference to heat or cool So this is called Fuzzy control and works only in I FEEL CONTROL mode In DRY mode of I FEEL CONTROL the set temperature doesn t change TOO COOL To raise the set temperature 1 2 degrees C TOO WARM To lower the set temperature 1 2 degrees C ...

Page 18: ...the thermostat is OFF the compressor repeats 4 minutes OFF and 1 minute ON Compressor Outdoor fan Indoor fan ON OFF continuously at set speed OFF ON ON Time control When the three conditions as follows have been satisfied for 1 hour and 45 minutes compressor stops for 3 minutes a Compressor has been continuously operating b Indoor fan speed is Lo or Me c Room temperature is below 26 C When compres...

Page 19: ...tes Me 4 minutes or more Hi The upper limit of the fan speed is the set speed If the thermostat turns off this operation changes to flow soft control 4 Flow soft control After the thermostat turns off the indoor fan operates at VLo NOTE When the thermostat turns on the fan operates at the set speed Due to the cold air prevention control the fan does not start at set speed until the indoor coil the...

Page 20: ...n d or e is satisfied the defrosting operation stops d The defrost thermistor RT61 reads 3 C or more e The defrosting time exceeds 10 minutes 3 Defrosting time chart NOTE1 When the indoor coil thermistor reads above 18 C indoor fan operates at VLo for 30 seconds When the indoor coil thermistor reads 18 C or less the indoor fan stops NOTE2 Refer to the Service Manual OB227 REVISED EDITION B when MC...

Page 21: ... not function when the room temperature is 13 C or below 5 When DRY operation functions the fan speed is lower than cool operation 9 4 HEAT OPERATION 1 Press OPERATE STOP ON OFF button OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone 2 Select HEAT mode with the OPERATION SELECT button 3 Press TEMPERATURE buttons TOO WARM or TOO COOL button to select the desired temperature The...

Page 22: ...rmines the vane angle and operation to make the optimum room temperature distribution 1 In COOL and DRY operation 2 In HEAT operation Vane angle is fixed to position 1 Vane angle is fixed to position 4 4 1 1 2 3 4 5 5 STOP operation OFF and ON TIMER standby When the following cases occur the vane returns to the closed position a When the OPERATE STOP ON OFF button is pressed POWER OFF b When the o...

Page 23: ... operation button AUTO START operation ON timer button AUTO STOP operation OFF timer 4 Press HR and MIN button to set the timer Time setting is 10 minute units HR and MIN button will work when or button is flashing These marks disappear in 1 minute After setting the ON timer check that OPERATION INDICATOR lamp of the indoor unit lights NOTE1 Be sure to place the remote controller at the position w...

Page 24: ...ller the operation mode set temperature and the fan speed are memorized by the the auto restart P C board The AUTO RESTART FUNCTION sets to work the moment the power has restored after power failure Then the unit will restart automatically However if the unit is operated in I FEEL CONTROL mode before power failure the operation is not memorized In I FEEL CONTROL mode the operation is decided by th...

Page 25: ...he remote controller the remote controller number is designated as the indoor unit number Therefore at and after the second time indoor unit accepts the remote controller of the initial setting number At setting error turn the power supply off to cancel the individual operation and then turn the power supply on to restart the setting No 1 unit No 2 unit No 3 unit No 4 unit 1 unit operation No modi...

Page 26: ...is case the remote controller can not be repaired only by the battery replacement To operate the remote controller normally replace the batteries in the following order This remote controller has the RESET button After refilling new batteries press the RESET button with tip end of ball point pen or the like and then use the remote controller TROUBLESHOOTING 11 RTESET button MCFH 13NV E3 NOTE INFOR...

Page 27: ... Trouble of the serial signal Cause Indoor unit 2 time Room temperature In door coil thermistor trouble Refer to How to check mis wiring and signal error when outdoor unit doesn t work on page 32 w1 6 time flash 2 5 second OFF Cause outdoor unit 6 time Replace the defrost thermistor E D B Check room temperature thermistor Refer to Test point diagram and voltage on page 33 Refer to Check of indoor ...

Page 28: ...after the compressor start up Check point Check switch SW2 2 MU type or MUH type Check wiring visual check and conductivity check Check indoor electronic control P C board Check outdoor DEICER P C board Check electrical parts Check resistance of thermistor Reconnect connector Check indoor electronic control P C board Check outdoor DEICER P C board MUH Check outdoor control P C board MXZ Check resi...

Page 29: ...ORN YLW BLU BRN WHT GRN YLW P Normal 8kΩ 20kΩ Abnormal Opened or short circuited Normal Abnormal Opened or short circuited WHT BLK 175 190Ω BLK YLW 66 1 71 6Ω YLW BLU 45 6 49 4Ω BLU BRN 30 2 32 7Ω BRN RED 21 9 23 8Ω BLK RED WHT MAIN AUX P INNER THERMOSTAT P BRN YLW PNK RED ORN BLU ROTOR Vane motor Measure the resistance between the terminals with a tester Part temperature10 C 30 C Normal Abnormal ...

Page 30: ...ote controller Is LCD display on the remote controller visible Replace the batteries see page 26 Remove the batteries and then set them back Check if the unit operates with the remote controller Does the unit operate with remote controller Turn on a radio to AM and press switch on remote controller Is noise heard from radio Replace the remote controller Are there any fluorescent lights of inverter...

Page 31: ...block of indoor unit Is there 220 240V AC to the terminal block between 2 N Check the voltage to the terminal block of outdoor unit Is there 220 240V AC to the terminal block between 2 N Check the indoor electronic control P C board The unit doesn t operate with the remote controller Also the OPERATION INDICATOR lamp doesn t light up by pressing the EMERGENCY OPERATION switch Replace the fuse Repl...

Page 32: ... N 2 Is there 5V DC between J9 J8 on the outdoor DEICER P C board 2 Is there 10V DC between both ends of R601 2 By tester the stylus is between 5 10V Replace the outdoor DEICER P C board Rectify in out connecting wire Check and rectify the fuse and varistor on the outdoor DEICER P C board Rectify in out connecting wire Replace the indoor electronic control P C board 1 Short circuit of JPG and JPS ...

Page 33: ...30 40 10 20 30 40 50 60 Temperature C Resistance K TEST POINT DIAGRAM AND VOLTAGE MCFH 13NV E3 Indoor electronic control P C board Fan motor power supply 220 240V AC 7 5 6 4 3 2 1 8 Lo Hi Fuse 250V AC 3 15A Power supply input 220 240V AC 12V DC 5V DC Time short point Indoor coil thermistor RT12 Room temperature thermistor RT11 VLo Me JHA Release of AUTO RESTART FUNCTION Refer to page 25 ...

Page 34: ...40V AC R601 5 10V DC INPUT 220 240V AC Defrost thermistor RT61 Fuse 2A 250V Defrost interval time short pin J9 J8 5V DC Jumper wire for change in defrost setting JPC JPE Refer to page 25 52C 12V DC 12V DC Test point MUCFH 13NV E3 Outdoor deicer P C board ...

Page 35: ... and remove the catch 7 Take out the sirocco fan and the indoor fan motor Photo 1 Photo 2 Photo 3 Photo 4 Screws of the grill Electronic box Fan casing upper Indoor fan motor Screws of the motor band Fan casing upper Motor band Terminal box 12 1 MCFH 13NV INDOOR UNIT E3 1 Slide the sleeve and check if there is a locking lever or not 2 The terminal with this connector is a terminal with lock mechan...

Page 36: ... box Refer to 1 5 Remove the indoor fan motor Refer to 2 6 Remove the screws of the motor support 7 Remove the fan casing Iower 8 Remove the installations of the drain pan and remove the screws Photo 7 9 Remove the screws under the drain pan Photo 8 10 Remove the drain pan 11 Remove the indoor heat exchanger Photo 5 Photo 6 Photo 7 Photo 8 Screws of the front panel Installations and screws Screws ...

Page 37: ...ides 6 Remove the top panel 7 Remove the cabinet 2 Removing the deicer P C board 1 Remove the service panel and the cabinet 2 Disconnect all the connectors and the terminals on the deicer P C board 3 Remove the deicer P C board Photo 4 Terminal block Screws Deicer P C board Photo 1 Photo 3 Screws of the top panel Service panel Screws of the service panel Screws of the top panel Screws of the cabin...

Page 38: ...abinet Refer to 1 2 Remove the relay panel 3 Remove the soundproof felt 4 Remove the terminal cover on the compressor 5 Disconnect lead wires from the glass terminal of the compressor 6 Release gas from the refrigerant circuit 7 Disconnect the welded part of the discharge pipe 8 Disconnect the welded part of the suction pipe 9 Remove nuts fixing the compressor 10 Remove the compressor NOTE Before ...

Page 39: ... E02 179 972 E02 179 142 E02 227 303 FRONT PANEL WH GRILLE WH VANE WH AIR FILTER BACK PANEL IN NOZZLE WH FAN CASING U FAN CASING L INDOOR HERT EXCHANGER DRAIN PAN UNION GAS UNION LIQUID INSTALLATION METAL L INSTALLATION METAL R GRILLE CATCH WH VANE MOTOR 12 7 6 35 3PCS SET 1 1 1 2 1 1 2 2 1 1 1 1 1 1 3 1 MCFH 13NV E3 WH MV 17 18 E02 257 426 E02 141 083 REMOTE CONTROLLER REMOTE CONTROLLER HOLDER 1 ...

Page 40: ...27 450 E02 324 452 E02 127 382 E02 227 468 E02 327 307 E02 336 385 INDOOR FAN MOTOR SIROCCO FAN FAN MOTOR RUBBER MOUNT TERMINAL BLOCK TERMINAL BLOCK SWITCH ROOM TEMPERATURE THERMISTOR P C BOARD ELECTRONIC CONTROL P C BOARD AUTO RESTART P C BOARD FUSE RECEIVER P C BOARD INDOOR COIL THERMISTOR VARISTOR RB4V25 2PCS SET FigureA FigureB 3 15A MF TB F11 RT12 NR11 MCFH 13NV E3 WH Symbol in Wiring Diagram...

Page 41: ... E02 440 233 E02 444 961 RH 231VHAT 3 0X 1 4X500 3 0X 1 8X200 6 35 12 7 3RUBBERS SET 1 1 1 1 1 1 2 1 1 1 1 1 3 1 1 MC CABINET TOP PANEL GRILLE OUT SERVICE PANEL COMPRESSOR OUTDOOR HEAT EXCHANGER CAPILLARY TUBE CAPILLARY TUBE STOP VALVE LIQUID STOP VALVE GAS BASE MOTOR SUPPORT COMPRESSOR RUBBER SET BACK PANEL OUT REVERSING VALVE Part number that is circled is not shown in the illustration 2 3 5 10 ...

Page 42: ... 1 1 1 2 3 4 5 6 7 8 9 PROPELLER FAN OUTDOOR FAN MOTOR COMPRESSOR CAPACITOR TERMINAL BLOCK OUT DEFROST THERMISTOR DEICER P C BOARD SURGE ABSORBER REVERSING VALVE COIL FUSE MF C1 TB RT61 DSAR 21S4 F61 E02 336 501 E02 442 301 E02 079 353 E02 198 374 E02 440 310 E02 445 451 E02 128 383 E02 440 490 E02 095 382 1 2 10 11 DRAIN SOCKET DRAIN CAP E02 444 704 E02 444 705 10 11 13 6 ACCESSORY PARTS 13 6 ACC...

Page 43: ...cause condensation at the air outlet The air cleaning filter is disposable The standard usable term is about 4 months However if the color of the filter turns to dark brown replace soon Remove the air filter and the deodorizing filter together Separate the deodorizing filter gray sponge type from the air filter Remove the air filter and the air cleaning filter together Separate the air cleaning fi...

Page 44: ...ENGINEERING CO LTD Issued in Jun 1999 No OB240 268 Printed in Japan New publication effective Jun 1999 Specifications subject to change without notice HEAD OFFICE MITSUBISHI DENKI BLDG MARUNOUCHI TOKYO100 8310 TELEX J24532 CABLE MELCO TOKYO ...

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