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Manual Mitsubishi Electronics MUZ-GE09NA

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  • Mitsubishi Electronics MUZ-GE09NA - page 1

    SER VICE MANUAL CONTENTS 1. TECHNICAL CHANGES ··································· 2 2. P ART NAMES AND FUNCTIONS ····················· 3 3. SPECIFICA TION ················································ 4 4. OUTLINES AND DIMENSIONS ······? ...

  • Mitsubishi Electronics MUZ-GE09NA - page 2

    2 MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUZ-GE18NA MUY -GE09NA MUY -GE12NA MUY -GE15NA MUY -GE18NA 1. New model 1 TECHNICAL CHANGES ...

  • Mitsubishi Electronics MUZ-GE09NA - page 3

    3 MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUY -GE09NA MUY -GE12NA MUY -GE15NA Air outlet Drain outlet Piping Drain hose Air inlet (back and side) MUZ-GE18NA MUY -GE18NA Piping Air outlet Drain hose Drain outlet Air inlet (back and side) 2 P ART NAMES AND FUNCTIONS ...

  • Mitsubishi Electronics MUZ-GE09NA - page 4

    4 Outdoor unit model MUZ-GE09NA MUY -GE09NA MUZ-GE12NA MUY -GE12NA Capacity Rated (Minimum~Maximum) Cooling 1 Btu/h 9,000 ( 3,800 ~ 12,200 ) 9,000 ( 3,800 ~ 12,200 ) 12,000 ( 3,800 ~ 13,600 ) 12,000 ( 3,800 ~ 13,600 ) Heating 47 1 Btu/h 10,900 ( 4,500 ~ 14,100 ) — 14,400 ( 5,500 ~ 18,100 ) — Capacity Heating 17 2 Btu/h 8,700 — 1 1,200 — Pow ...

  • Mitsubishi Electronics MUZ-GE09NA - page 5

    5 Outdoor unit model MUZ-GE15NA MUY -GE15NA MUZ-GE18NA MUY -GE18NA Capacity Rated (Minimum~Maximum) Cooling 1 Btu/h 14,000 ( 3,100 ~ 18,200 ) 14,000 ( 3,100 ~ 18,200 ) 17,200 ( 3,700 ~ 18,700 ) 17,200 ( 3,700 ~ 18,700 ) Heating 47 1 Btu/h 18,000 ( 4,800 ~ 20,900 ) — 21,600 ( 3,500 ~ 25,200 ) — Capacity Heating 17 2 Btu/h 15,900 — 17,200 — P ...

  • Mitsubishi Electronics MUZ-GE09NA - page 6

    6 T est condition ARI Mode T est Indoor air condition (°F) Outdoor air condition (°F) Dry bulb W et bulb Dry bulb Wet bulb SEER (Cooling) "A-2" Cooling Steady State at rated compressor Speed 80 67 95 (75) "B-2" Cooling Steady State at rated compressor Speed 80 67 82 (65) "B-1" Cooling Steady State at minimum compress ...

  • Mitsubishi Electronics MUZ-GE09NA - page 7

    7 Unit: inch MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUY -GE09NA MUY -GE12NA MUY -GE15NA Liquid pipe :1/4 (flared) Gas pipe :3/8 (flared) (GE09/12) 1/2 (flared) (GE15) 6-23/32 2 5-7/8 2-23/32 1-3/4 15-3/4 12 ~ 12-3/4 13-9/16 11 / 1 6 1-9/16 7/8 21-5/8 1 1-1/32 13/32 31-1/2 19-1 1/16 5-15/16 1 1-29/32 17/32 29/32 1 1-1/4 Air in handle Air in Air out 2- 3/8 ...

  • Mitsubishi Electronics MUZ-GE09NA - page 8

    8 MUZ-GE09NA MUZ-GE12NA 5 WIRING DIAGRAM MUY -GE09NA MUY -GE12NA ...

  • Mitsubishi Electronics MUZ-GE09NA - page 9

    9 MUZ-GE15NA MUY -GE15NA ...

  • Mitsubishi Electronics MUZ-GE09NA - page 10

    10 MUZ-GE18NA MUY -GE18NA ...

  • Mitsubishi Electronics MUZ-GE09NA - page 11

    11 Unit: inch MUZ-GE09NA MUY -GE09NA Outdoor heat exchanger Flared connection Defrost thermistor RT6 1 ( MUZ ) Discharge temperature thermistor RT6 2 Flared connection Stop valve (with strainar) Stop valve (with service port) Refrigerant flow in cooling Compressor 4-way valve Refrigerant flow in heating ( MUZ ) Refrigerant pipe ø3/8 (with heat ins ...

  • Mitsubishi Electronics MUZ-GE09NA - page 12

    12 MUZ-GE18NA MUY -GE18NA Outdoor heat exchanger Flared connection Defrost thermistor RT6 1 ( MUZ ) Discharge temperature thermistor RT6 2 Flared connection Stop valve (with strainar) Stop valve (with service port) Capillary tube O.D. 0.142 × I.D. 0.094 × 1-31/32 ( ø 3.6 × ø 2.4 × 50 ) Refrigerant flow in cooling Compressor 4-way valve Refrig ...

  • Mitsubishi Electronics MUZ-GE09NA - page 13

    13 ADDITIONAL REFRIGERANT CHARGE (R410A: oz.) Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation. Model Outdoor unit precharged Refrigerant piping length (one way): ft. 25 30 40 50 60 65 MUZ-GE09NA MUY -GE09NA 1 lb. 12 oz. 0 1.62 4.86 8.10 1 1.34 12.96 MUZ-GE12NA MUY -GE12NA 2 lb. 9 oz. MUZ-GE15N ...

  • Mitsubishi Electronics MUZ-GE09NA - page 14

    14 2) COOLING CAP ACITY CORRECTIONS Refrigerant piping length (one way: ft.) 25 (std.) 40 65 MUZ-GE09NA MUY -GE09NA MUZ-GE12NA MUY -GE12NA MUZ-GE15NA MUY -GE15NA MUZ-GE18NA MUY -GE18NA 1.0 0.954 0.878 3) HEA TING CAP ACITY (MUZ) Model Indoor air Outdoor intake air WB temperature ( ˚ F) IDB ( ˚ F) 5 1 52 53 54 34 55 5 TC TPC TC TPC TC TPC TC TPC T ...

  • Mitsubishi Electronics MUZ-GE09NA - page 15

    15 65 70 75 75 70 65 15 14 13 12 11 10 9 8 7 6 5 Indoor intake air DB tem perature (°F) = 413 CFM Airflow 15 52 5 3 5 4 5 5 5 6 5 7 0 Outdoor intake air WB temperature (°F) 0.4 0.6 0.8 1.0 Ind oor intake air DB temperature (°F) T otal power consumption (kW) T otal capacity (1 0 3 Btu/h) This value of frequency is not the same as the actual frequ ...

  • Mitsubishi Electronics MUZ-GE09NA - page 16

    16 7-3. CONDENSING PRESSURE Cooling Data is based on the condition of indoor humidity 50 %. Air flow should be set to High speed. MUZ-GE12NA MUY -GE12NA MUZ-GE09NA MUY -GE09NA 68 70 75 80 85 90 95 100 105 (°F) 120 140 160 180 200 (PSIG) (PSIG) 68 70 75 80 85 90 95 100 105 (°F) 280 320 360 400 440 Condensing pressure 86 80 75 70 Suction pressure O ...

  • Mitsubishi Electronics MUZ-GE09NA - page 17

    17 5 1 52 53 54 55 56 5 7 5 (°F) 5 1 52 53 54 55 56 5 7 5 (°F) 60 85 11 0 135 160 185 210 220 245 270 295 320 345 370 Indoor DB temperature (°F) Condensing pressure Outdoor ambient temperature (PSIG) (PSIG) 75 70 65 58Hz Indoor DB temperature (°F) Suction pressure Outdoor ambient temperature 75 70 65 58Hz Heating (MUZ) Data is based on the cond ...

  • Mitsubishi Electronics MUZ-GE09NA - page 18

    18 MUZ-GE18NA MUZ-GE15NA 5 1 52 53 54 55 56 5 7 5 (°F) 5 1 52 53 54 55 56 5 7 5 (°F) 60 85 11 0 135 160 185 210 260 296 332 368 404 440 Indoor DB temperature (°F) Condensing pressure Outdoor ambient temperature (PSIG) (PSIG) 75 70 65 54Hz Indoor DB temperature (°F) Suction pressure Outdoor ambient temperature 75 70 65 54Hz 5 1 52 53 54 55 56 5 ...

  • Mitsubishi Electronics MUZ-GE09NA - page 19

    19 7-4. ST ANDARD OPERA TION DA T A Model MSZ-GE09NA MSY -GE09NA MSZ-GE09NA MSZ-GE12NA MSY -GE12NA MSZ-GE12NA Item Unit Cooling Heating Cooling Heating T otal Capacity Btu/h 9,000 10,900 12,000 14,400 SHF - 0.82 — 0.74 — Input kW 0.660 0.760 0.960 1.170 Rated frequency Hz 59.5 77.5 69.0 77.0 Electrical circuit Indoor unit MSZ-GE09NA, MSY -GE09N ...

  • Mitsubishi Electronics MUZ-GE09NA - page 20

    20 Model MSZ-GE15NA MSY -GE15NA MSZ-GE15NA MSZ-GE18NA MSY -GE18NA MSZ-GE18NA Item Unit Cooling Heating Cooling Heating To t a l Capacity Btu/h 14,000 18,000 17,200 21,600 SHF - 0.80 — 0.71 — Input kW 1.080 1.600 1.640 1.900 Rated frequency Hz 55.5 74.0 83.0 84.0 Electrical circuit Indoor unit MSZ-GE15NA, MSY -GE15NA MSZ-GE18NA, MSY -GE18NA Powe ...

  • Mitsubishi Electronics MUZ-GE09NA - page 21

    21 7-5. CAP ACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY Capacity correction factors Input correction factors Input correction factors Capacity correction factors Correction of Cooling capacity The operational frequency of compressor Correction of Cooling total input The operational frequency of compressor Correction of Heating total inp ...

  • Mitsubishi Electronics MUZ-GE09NA - page 22

    22 MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUZ-GE18NA MUY -GE09NA MUY -GE12NA MUY -GE15NA MUY -GE18NA 8-2. R.V . COIL CONTROL (MUZ) Heating . . . . . . . . . . . . . . . . . ON Cooling . . . . . . . . . . . . . . . . . OFF Dry . . . . . . . . . . . . . . . . . . . . OFF NOTE : The 4-way valve reverses for 5 seconds right before start-up of the compressor ...

  • Mitsubishi Electronics MUZ-GE09NA - page 23

    23 9-1. CHANGE IN DEFROST SETTING (MUZ) Changing defrost finish temperature <JS> T o change the defrost finish temperature, cut/solder the JS wire of the outdoor inverter P .C. board. (Refer to 10-6-1.) Jumper Defrost fi nish temperature MUZ-GE09/12/15 MUZ-GE18 JS Soldered (Initial setting) 41°F (5°C) 48°F (9°C) None (Cut) 50°F (10°C) ...

  • Mitsubishi Electronics MUZ-GE09NA - page 24

    24 Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (10-3.) disappears, the memorized failure details can be recalled. 10-2. F AILURE MODE RECALL FUNCTION 1. Flow chart of failure mode recall function for the indoor/outdoor ...

  • Mitsubishi Electronics MUZ-GE09NA - page 25

    25 2. Flow chart of the detailed outdoor unit failure mode recall function 2.Blinking pattern when outdoor unit is abnormal: ON OFF No beep Beeps Repeated cycle 2.5-second OFF 3-second ON Blinking at 0.5- second interval No beep Beeps Repeated cycle 2.5-second OFF 3-second ON Blinking at 0.5- second interval Repeated cycle Does the upper lamp of OP ...

  • Mitsubishi Electronics MUZ-GE09NA - page 26

    26 3. Outdoor unit failure mode table POWER lamp (Indoor unit) Abnormal point (Failure mode / protection) LED indication (Outdoor P .C. board) Condition Remedy Indoor/ outdoor unit failure mode recall function Outdoor unit failure mode recall function OFF None (Normal) —— — — — 2-time fl ash 2.5 seconds OFF Outdoor power system — Overc ...

  • Mitsubishi Electronics MUZ-GE09NA - page 27

    27 10-3. TROUBLESHOOTING CHECK T ABLE No. Symptom LED indication Abnormal point/ Condition Condition Remedy 1 Outdoor unit does not oper- ate. 1-time fl ash every 2.5 seconds Outdoor power sys- tem Overcurrent protection stop is continuously performed 3 times within 1 minute after the compressor gets started, or failure of re- start of compressor ...

  • Mitsubishi Electronics MUZ-GE09NA - page 28

    28 10-4. TROUBLE CRITERION OF MAIN P ARTS MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUZ-GE18NA MUY -GE09NA MUY -GE12NA MUY -GE15NA MUY -GE18NA Part name Check method and criterion Figure Defrost thermistor (RT61) (MUZ) Fin temperature thermistor (RT64) Ambient temperature thermistor (RT65) Outdoor heat exchanger temperature thermistor (RT68) Measure the res ...

  • Mitsubishi Electronics MUZ-GE09NA - page 29

    29 10-5. TROUBLESHOOTING FLOW Are the voltages balanced? Disconnect the connector (CN61) between compressor and the intelligent power module (IPM). Replace the inverter P .C. board. Check the voltage between terminals. Check the compressor . See 10-5. “Check of compressor”. No Ye s See 10-5. “Check of open phase”. ● With the connector bet ...

  • Mitsubishi Electronics MUZ-GE09NA - page 30

    30 F Check of compressor start failure D Check of compressor winding E Check of compressor operation time ● Disconnect the connector (CN61) between the compressor and intelligent power module, and measure the resistance be- tween the compressor terminals. <<Measurement point>> at 3 points BLK - WHT BLK - RED WHT - RED <<Judgemen ...

  • Mitsubishi Electronics MUZ-GE09NA - page 31

    31 Is the resistance of thermistor normal? (Refer to 10-6.1.) Reconnect the connector of thermistor . T urn ON the power supply and press EMERGENCY OPERA TION switch. No Replace the thermistor except RT64. When R T64 is abnormal, replace the inverter P .C. board. Does the unit operate for 10 minutes or more without showing thermistor abnormality? O ...

  • Mitsubishi Electronics MUZ-GE09NA - page 32

    32 I Check of outdoor fan motor Is the resistance of outdoor fan motor normal? (Refer to 10-4.) Replace the outdoor fan motor . Replace the inverter P .C. board. No Ye s Disconnect CN932 from the inverter P .C. board, and measure the resistance of the outdoor fan motor . MUZ-GE09/12/15NA MUY -GE09/12/15NA Is the resistance between each ter- minal o ...

  • Mitsubishi Electronics MUZ-GE09NA - page 33

    33 J Check of power supply Is there voltage 208/230 V AC between the indoor terminal block S1 and S2? No Ye s Replace the indoor electronic control P .C. board. Rectify indoor/outdoor connecting wire. Ye s If light up, OK. If fl ash, refer to 10-3. Does The upper lamp of OPERA TION INDICA TOR lamp on the indoor unit light up? Dose LED on the inver ...

  • Mitsubishi Electronics MUZ-GE09NA - page 34

    34 Press OPERA TE/ST OP (ON/OFF) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor unit. 1 Expansion valve operates in full-opening direction. OK. NOTE : After check of LEV , do the undermentioned operations. 1. T urn OFF the power supply and turn ON it again. 2. Press RESET butt ...

  • Mitsubishi Electronics MUZ-GE09NA - page 35

    35 L Check of inverter P .C. board Check the outdoor fan motor . (Refer to 10-5. .) Is the fuse (F901) blown on the in- verter P .C. board? Check the connection of the connectors (CN931, CN932) of the outdoor fan motor . If the connection is poor , make it correct. Operate the outdoor unit by starting EMERGENCY OPERA TION. Check the LED indication ...

  • Mitsubishi Electronics MUZ-GE09NA - page 36

    36 M How to check miswiring and serial signal error T urn OFF inverter-controlled lighting equipment. T urn OFF the power supply and then turn ON again. Press EMERGENCY OPERA TION switch. • • • A Is serial signal error indicated 6 minutes later? B Ye s Reinstall either the unit or the light away from each other . Attach a fi lter on remote c ...

  • Mitsubishi Electronics MUZ-GE09NA - page 37

    37 N Electromagnetic noise enters into TV sets or radios Ye s Is the unit grounded? No Ground the unit. Ye s Is the distance between the antennas and the indoor unit within 9.91 ft., or is the distance between the antennas and the outdoor unit within 9.91 ft.? No Extend the distance between the antennas and the indoor unit, and/or the antennas and ...

  • Mitsubishi Electronics MUZ-GE09NA - page 38

    38 -4 14 32 50 68 86 104 0 10 20 30 40 50 60 70 80 90 100 T emperature(°F) Defrost thermistor(RT61) (MUZ) Ambient temperature thermistor(RT65) Outdoor heat exchanger temperature thermistor(RT68) T emperature(°F) Discharge temperature thermistor(RT62) 32 50 68 86 104 122 140 158 176 194 212 230 248 0 100 200 300 400 500 600 700 32 50 68 86 104 122 ...

  • Mitsubishi Electronics MUZ-GE09NA - page 39

    39 -4 14 32 50 68 86 104 0 10 20 30 40 50 60 70 80 90 100 T emperature(°F) Defrost thermistor(RT61) (MUZ) Ambient temperature thermistor(RT65) Outdoor heat exchanger temperature thermistor(RT68) T emperature(°F) Discharge temperature thermistor(RT62) 32 50 68 86 104 122 140 158 176 194 212 230 248 0 100 200 300 400 500 600 700 32 50 68 86 104 122 ...

  • Mitsubishi Electronics MUZ-GE09NA - page 40

    40 1 1-1. MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUY -GE09NA MUY -GE12NA MUY -GE15NA NOTE : T urn OFF power supply before disassembling. OPERA TING PROCEDURE PHOTOS 1. Removing the cabinet (1) Remove the screw fixing the service panel. (2) Pull down the service panel and remove it. (3) Remove the screws fixing the conduit cover . (4) Remove the conduit c ...

  • Mitsubishi Electronics MUZ-GE09NA - page 41

    41 OPERA TING PROCEDURE PHOT OS 2. Removing the inverter assembly , inverter P .C. board (1) Remove the cabinet and panels. (Refer to 1.) (2) Disconnect the lead wire to the reactor and the following connectors: <Inverter P .C. board> CN721 (R.V . coil) (MUZ) CN931, CN932 (Fan motor) CN641 (Defrost thermistor (MUZ) and discharge tempera- ture ...

  • Mitsubishi Electronics MUZ-GE09NA - page 42

    42 OPERA TING PROCEDURE PHOT OS 5. Removing outdoor fan motor (1) Remove the cabinet and panels. (Refer to 1.) (2) Disconnect the following connectors: <Inverter P .C. board> CN931, CN932 (Fan motor) (3) Remove the propeller nut. (Photo 7) (4) Remove the propeller . (Photo 7) (5) Remove the screws fixing the fan motor . (Photo 7) (6) Remove t ...

  • Mitsubishi Electronics MUZ-GE09NA - page 43

    43 1 1-2. MUZ-GE18NA MUY -GE18NA NOTE: T urn OFF power supply before disassembling. OPERA TING PROCEDURE PHOT OS 1. Removing the cabinet (1) Remove the screws of the service panel. (2) Remove the screws of the top panel. (3) Remove the screw of the valve cover . (4) Remove the service panel. (5) Remove the top panel. (6) Remove the valve cover . (7 ...

  • Mitsubishi Electronics MUZ-GE09NA - page 44

    44 OPERA TING PROCEDURE PHOT OS 2. Removing the inverter assembly , inverter P .C. board (1) Remove the cabinet and panels. (Refer to 1.) (2) Disconnect the lead wire to the reactor and the following con- nectors: <Inverter P .C. board> CN721 (R.V .coil) (MUZ) CN931, CN932 (Fan motor) CN641 (Defrost thermistor (MUZ) and discharge temperature ...

  • Mitsubishi Electronics MUZ-GE09NA - page 45

    45 Ambient tem- perature thermistor Outdoor heat exchanger tempera- ture thermistor Defrost thermistor OPERA TING PROCEDURE PHOTOS 4. Removing the discharge temperature thermistor , defrost thermistor , outdoor heat exchanger tempera- ture thermistor and ambient temperature thermistor (1) Remove the cabinet and panels. (Refer to 1.) (2) Disconnect ...

  • Mitsubishi Electronics MUZ-GE09NA - page 46

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  • Mitsubishi Electronics MUZ-GE09NA - page 48

    HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAP AN © Copyright 2009 MITSUBISHI ELECTRIC CO.,L TD Distributed in Jul. 2009. No. OBH 549 5 Made in Japan New publication, effective Jul. 2009 Specifications subject to change without notice. TM ...

Manufacturer Mitsubishi Electronics Category Air Conditioner

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