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Manuel d’utilisation Mitsubishi Electronics MU-AWA

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Summary
  • Mitsubishi Electronics MU-AWA - page 1

    MS-A•W A · MU-A•W A MSZ-A•NA · MUZ-A•NA · MUZ-A•NA - MSY -A•NA · MUY -A•NA · MXZ-A•NA U SER VICE TECHNICAL GUIDE CONTENTS 1. MS MICROPROCESSOR CONTROL ··················3 2. MSZ,MSY MICROPROCESSOR CONTROL ·······6 3. MXZ MICROPROCESSOR CONTROL ··············20 Wireless type Models SPLIT -T ...

  • Mitsubishi Electronics MU-AWA - page 2

    1. MS MICROPROCESSOR CONTROL ···························································3 Indoor unit models Outdoor unit models MS-A09W A MU-A09W A MS-A12W A MU-A12W A 1-1. COOL OPERA TION··················································· ...

  • Mitsubishi Electronics MU-AWA - page 3

    3 MS MICROPROCESSOR CONTROL 1 1-1. COOL ( ) OPERA TION MS-A09W A MU-A09W A MS-A12W A MU-A12W A 2. Indoor fan speed control Indoor fan operates continuously at the set speed by F AN SPEED CONTROL button regardless of the thermostat’s OFF-ON. In AUTO the fan speed is as follows. Room temperature minus set temperature : 3.1 degrees or more ····? ...

  • Mitsubishi Electronics MU-AWA - page 4

    4 -1.8 deg. -1.3 deg. 1. Thermostat control Thermostat is ON or OFF by difference between room temperature and set temperature. Initial temperature difference Thermostat Room temperature minus set temperature : -1.8 degrees or more·····································ON Room temperature minus set temperature : l ...

  • Mitsubishi Electronics MU-AWA - page 5

    5 1-3. AUT O V ANE OPERA TION 1. Horizontal vane <SWING operation> In swing operation of ECONO COOL operation mode, the initial air flow direction is adjusted to “Horizontal”. According to the temperature of indoor coil thermistor RT12 at starting of this operation, next downward blow time is decided. Then when the downward blow has been ...

  • Mitsubishi Electronics MU-AWA - page 6

    MSZ,MSY MICROPROCESSOR CONTROL 6 2 2-1. COOL ( ) OPERA TION MSZ-A09NA MSY -A15NA MUZ-A09NA MUY -A15NA MSZ-A12NA MSY -A17NA MUZ-A12NA MUY -A17NA MSZ-A15NA MSY -A24NA MUZ-A15NA MUY -A24NA MSZ-A17NA MUZ-A17NA MSZ-A24NA MUZ-A24NA 2. Indoor fan speed control Indoor fan operates continuously at the set speed by F AN SPEED CONTROL button regardless of the ...

  • Mitsubishi Electronics MU-AWA - page 7

    7 Set temperature is as shown on the right chart. The system for dry operation uses the same refrigerant circuit as the cooling circuit. The compressor and the indoor fan are controlled by the room tem- perature. By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature decrease. 2-2. DR Y ( ) OP ...

  • Mitsubishi Electronics MU-AWA - page 8

    8 (2) Cold air prevention control MSZ-A09/12/15/17 1 When the compressor is not operating, ( 1 ) if the temperature of room temperature thermistor R T1 1 is less than 66°F , the fan stops. ( 2 ) if the temperature of room temperature thermistor R T1 1 is 66°F or more and ( 1 ) if the temperature of RT12 is less than 32°F , the fan stops. ( 2 ) i ...

  • Mitsubishi Electronics MU-AWA - page 9

    9 T ime chart of defrosting in HEA T mode (reverse type) set position set speed set position set speed Indoor fan Compressor normal Outdoor fan R.V . coil (21S4) OFF (COOL) OFF Maximum frequency horizontal Horizontal vane V ery Low (temperature of indoor coil thermistor > 64 ° F) 30 seconds 30 seconds 30 seconds 40 seconds 5 seconds 5 seconds 4 ...

  • Mitsubishi Electronics MU-AWA - page 10

    10 (3) Indoor fan control/ V ane control As the indoor fan speed and the horizontal vane position depend on the selected operation mode, when the operation mode changes over , they change to the exclusive ones. 2-5. OUTDOOR F AN MOTOR CONTROL Fan speed is switched according to the compressor frequency . COOL Fan speed Up Down Up Down Mode HEA T (MU ...

  • Mitsubishi Electronics MU-AWA - page 11

    11 <SWING operation> In swing operation of ECONO COOL operation mode, the initial air flow direction is adjusted to “Horizontal”. According to the temperature of indoor coil thermistor RT12 at starting of this operation, next downward blow time is decided. Then when the downward blow has been finished, next horizontal blow time is decided ...

  • Mitsubishi Electronics MU-AWA - page 12

    12 2-7. INVERTER SYSTEM CONTROL 2-7-1. MUZ-A09/12/15/17 MUY -A15/A17 2-7-1-1. Inverter main power supply circuit POWER P .C. BOARD Power supply INVERTER P .C. BOARD R64A R64B CT TR821 DB65 X64 L62 L63 C63A C63B C63C DB61 L61 P W V U N CT761 CT781 IPM U W MC V + Booster chopper circucuit SYMBOL IPM C63A/C63B/C63C CT761/CT781 CT DB61 R64A, R64B X64 D ...

  • Mitsubishi Electronics MU-AWA - page 13

    13 4. Intelligent power module IPM consists of the following components · IGBT (x6) : Converts DC waveform to three-phase AC waveform and outputs it. · Drive Circuit : Drives transistors. · Protection circuit : Protects transistors from overcurrent. Since the above components are all integrated in IPM, IPM has a merit to make the control circuit ...

  • Mitsubishi Electronics MU-AWA - page 14

    14 SYMBOL IPM CB1~3 CT1~2 CT61 L PFC R64A, R64B X64 NAME INTELLIGENT POWER MODULE SMOOTHING CAP ACITOR CURRENT TRANSFORMER CURRENT TRANSFORMER REACTOR POWER F ACTOR CONTROLLER CURRENT -LIMITING RESISTOR RELA Y FUNCTION It supplies three-phase AC power to compressor. It stabilizes the DC voltage. It measures the current of the compressor motor. It m ...

  • Mitsubishi Electronics MU-AWA - page 15

    15 Rotor Rotor Position Signal Permanent magnet is embedded. Necessary DC Motor Excited by magnetic field of stator Unnecessary AC Motor 2-7-4. Characteristics of sine wave control in case of brushless DC motor ● Although ordinary three-phase induction motor requires energy to excite the magnetic field of rotor, brushless DC motor doesn't ne ...

  • Mitsubishi Electronics MU-AWA - page 16

    16 w The operation frequency in COOL mode is restricted the upper limit frequency after 1 hour as shown below for dew prevention. It is rated frequency or less. 1 hour T ime Maximum frequency Upper limit frequency Rated frequency or less Applied model MUZ-A09 Minimum frequency Maximum frequency Minimum frequency Maximum frequency 32 COOL HEA T(MUZ) ...

  • Mitsubishi Electronics MU-AWA - page 17

    17 standard specification 2-9. EXP ANSION V AL VE CONTROL (LEV CONTROL) (1) Outline of LEV control The LEV basic control is comprised of setting LEV opening degree to the standard opening degrees set for each opera- tional frequency of the compressor . However , when any change in indoor/outdoor temperatures or other factors cause air conditioning ...

  • Mitsubishi Electronics MU-AWA - page 18

    18 (2) T ime chart OFF T ime T ime ON Operational frequency of the compressor Commanded to open Standard opening degree Opening degree is corrected according to discharge temperature. Positioning Air conditioner ON Air conditioner OFF (thermostat off) LEV opening degree about 5 minutes <COOL, DRY> about 15 minutes <HEA T> (3) Control da ...

  • Mitsubishi Electronics MU-AWA - page 19

    19 In COOL operation, the two indoor coil thermistors (one main and one sub) sense temperature ununiformity (super heat) at the heat exchanger , and when temperature difference have developed, the indoor coil thermistors adjust LEV opening degree to get approximate 10 degrees lower temperature than the target temperature in the table above, thus di ...

  • Mitsubishi Electronics MU-AWA - page 20

    MXZ MICROPROCESSOR CONTROL 20 3 3-1. INVERTER SYSTEM CONTROL MXZ-2A20NA MXZ-3A30NA SYMBOL IPM CB1~3 CT1~2 CT61 L PFC R64A, R64B X64 NAME INTELLIGENT POWER MODULE SMOOTHING CAP ACITOR CURRENT TRANSFORMER CURRENT TRANSFORMER REACTOR POWER F ACTOR CONTROLLER CURRENT -LIMITING RESISTOR RELA Y FUNCTION It supplies three-phase AC power to compressor. It ...

  • Mitsubishi Electronics MU-AWA - page 21

    21 4. Power transistor module IPM consists of the following components. · Power Transistors (x6) : Converts DC waveform to three-phase AC waveform and outputs it. · Drive Circuit : Drives transistors. · Protection circuit : Protects transistors from over current. Since the above components are all integrated in IPM, IPM has a merit that can get ...

  • Mitsubishi Electronics MU-AWA - page 22

    22 3-2. EXP ANSION V AL VE CONTROL (LEV CONTROL) Linear expansion valve (LEV) is controlled by "Thermostat ON" commands given from each unit. When outdoor unit is operating, some indoor units stop and some operate. • LEV opening for each indoor unit is determined by adding adjustment in accordance with the number of operating unit and t ...

  • Mitsubishi Electronics MU-AWA - page 23

    23 The table below shows the role of Exclusive LEV and Receiver LEV in each operation mode. w In COOL mode, the two indoor coil thermistor (one main and one sub) sense temperature ununiformity (super heat) at the heat exchanger , and when temperature dif ference have developed, the indoor coil thermistors adjust LEV opening to dimin- ish the super ...

  • Mitsubishi Electronics MU-AWA - page 24

    24 Capacity code Indoor unit 4 09 7 12 9 15 10 17 12 24 Standard opening (pulse) 01 02 03 04 05 06 07 08 COOL LEV Opening(code) HEA T 126 140 130 146 134 150 138 170 140 180 142 200 182 224 228 244 09 296 272 10 310 280 Code5,6 Code3,4 Difference in capacity Difference in operation number COOL HEA T 3 3 6 6 Code7,8 9 9 Code9,10 12 52 Code1 1,12 15 ...

  • Mitsubishi Electronics MU-AWA - page 25

    25 MXZ-3A 1 Discharge temperature 2 Each correction • (Each gas pipe temperature thermistor - Minimum gas pipe temperature thermistor) w 1 • (Main indoor coil thermistor - Sub indoor coil thermistor) w 1 Perform this, when number of operation units is 2 units or more. w 2 Correct the LEV opening by discharge temperature. COOL DRY HEA T • • ...

  • Mitsubishi Electronics MU-AWA - page 26

    26 Correct the LEV opening according to the difference between target discharge temperature and discharge temperature. Discharge temperature (˚F) LEV opening correction (pulse) More than T arget discharge temperature+18 T arget discharge temperature+18 to T arget discharge temperature+9 T arget discharge temperature+9 to T arget discharge temperat ...

  • Mitsubishi Electronics MU-AWA - page 27

    27 3-3. OPERA TIONAL FREQUENCY RANGE Number of operating unit 1 2 Capacity code 1, 2, 3, 4 5, 6 7, 8 9, 10 1 1, 12 13, 14 15 or above 2, 3, 4, 5, 6, 7 8, 9, 10 1 1, 12, 13 14, 15, 16 17, 18, 19, 20, 21 22, 23, 24 or above Min. 20 20 20 20 20 20 30 30 30 30 30 30 COOL (Hz) Max. 65 65 65 94 94 94 94 94 94 94 94 94 DRY (Hz) 25 25 30 75 75 75 75 52 52 ...

  • Mitsubishi Electronics MU-AWA - page 28

    New publication, effective Apr . 2006 Specifications subject to change without notice. C C Copyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO.,L TD Distributed in Apr . 2006. No. OBT16 7 Made in Japan HEAD OFFICE: TOKYO BLDG.,2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAP AN Fan speed is switched according to the number of operating indoor unit ...

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