Documents
Resources
Learning Center
Upload
Plans & pricing Sign in
Sign Out

HIGH STATIC PRESSURE DUCT

VIEWS: 21 PAGES: 22

HIGH STATIC PRESSURE DUCT

More Info
									         High static Pressure Ducted Type Air-conditioner


1. Features
1.1    In case the ceiling is super-high.
       Blowing pressure of Indoor Unit can reach 196Pa. The air conditioner delivers cold
       wind to every indoor corner even the ceiling is super-high.
1.2    Multi-blowing outlets
       To satisfy your fitment’s needs.
1.3    Indoor Unit can be installed in various ways to give you a creative space.
1.4    Fresh air drawn in
       Fresh air can be drawn in by the Indoor Unit, which improves the Indoor Air Quality
       greatly.
1.5    Low noise operation
      The noise is remarkably low, even lower than Traditional Central Air Conditioner.




                                            1
2. SPECIFICATION
                     Model                           MHA-26HR             MHA-36HR            MHA-48HR
Power source                                  380V 3N~ 50Hz       380V 3N~ 50Hz       380V 3N~ 50Hz
                Capacity          BTU/H       26000               36000               48000
                Input                 W       3250                4500                5630
  Cooling
                Running current       A       5.3                 7.7                 9.8
                EER           BTU/W.H         8.2                 6.4                 8.5
                Capacity          BTU/H       27800               44300               55000
  Heating       Input                W        2860                4550                5550
                Running current       A       5.2                 7.8                 9.5
Max. input consumption               W        4500                6900                6900
Max. input current                    A       7.4                 17.4                17.4
                Model                         JT90BCBYIL          JT160BCBYIL         JT160BCBYIL
                Type                          SCROLL              SCROLL              SCROLL
Compressor
                Brand                         DAIKIN              DAIKIN              DAIKIN
                Refrigerant oil       ml      1200                1500                1500
Refrigerant    R22                    g       2800                4050                4050
Design pressure                     MPa       2.6                 2.6                 2.6
Indoor   fan    Input                 W       360                 600                 600
motor           Capacitor             uF      10                  12                  12
                                      3
  Air flow      High fan             m /h     1600                3000                3400
                                      3
  (indoor)      Low fan             m /h      1120                1600                1600
Noise Level     High               dB(A)      52                  55                  55
  (indoor)      Low                dB(A)      50                  53                  53
Outdoor fan     Input                 W       138                 138(up)/156(down)   138(up)/156(down)
motor           Capacitor             uF      3.5                 3.5x2               3.5x2
Noise lever (outdoor)              dB(A)      60                  65                  65
                Dimension(W*H*D)              850X380X660         1200X380X660        1200X380X660
 Indoor unit    Packing     (W*H*D)           1074X495X775        1425X495X775        1425X495X775
                Net weight            kg      52                  65                  65
                Dimension(W*H*D)              895x860x360         940x1245x400        940x1245x400
Outdoor unit    Packing     (W*H*D)           1000X985X410        1018X1306X434       1018X1306X434
                Net weight            kg      79                  112                 112
Refrigerant     Liquid side           mm      Φ9.53               Φ12.7               Φ12.7
piping          Vapor side            mm      Φ16                 Φ19                 Φ19
Operation temp                        ℃       17~30               17~30               17~30
Ambient temp                              ℃   -7~45               -7~45               -7~45




                                                              2
                     Model                           MHA-26CR            MHA-36CR            MHA-48CR
Power source                                  380V 3N~ 50Hz       380V 3N~ 50Hz       380V 3N~ 50Hz
                Capacity          BTU/H       26000               36000               48000
                Input                 W       3390                4500                5500
  Cooling
                Running current       A       5.7                 7.7                 9.5
                EER           BTU/W.H         7.7                 8.0                 8.7
Max. input consumption              W         4300                6320                6320
Max. input current                    A       8.7                 11.5                11.5
                Model                         JT90BCBYIL          JT160BCBYIL         JT160BCBYIL
                Type                          SCROLL              SCROLL              SCROLL
Compressor
                Brand                         DAIKIN              DAIKIN              DAIKIN
                Refrigerant oil         ml    1200                1500                1500
Refrigerant    R22                        g   1450                2150                2150
Design pressure                    MPa        2.6                 2.6                 2.6
Indoor   fan    Input                 W       360                 600                 600
motor           Capacitor           uF        10                  12                  12
                                      3
  Air flow      High fan           m /h       1600                3000                3400
                                    3
  (indoor)      Low fan            m /h       1120                1600                1600
Noise Level     High              dB(A)       52                  55                  56
  (indoor)      Low               dB(A)       50                  53                  53
Outdoor fan     Input                 W       138                 138(up)/156(down)   138(up)/156(down)
motor           Capacitor               uF    3.5                 3.5                 3.5
Noise lever (outdoor)             dB(A)       60                  65                  65
                Dimension (W*H*D)             850X380X660         1200X380X660        1200X380X660
 Indoor unit    Packing     (W*H*D)           1075X495X775        1425X495X775        1425X495X775
                Net weight              kg    52                  65                  657
                Dimension(W*H*D)              895x860x350         940x1245x360        940x1245x360
Outdoor unit    Packing     (W*H*D)           1000X985X410        1020X1370X435       1020X1370X435
                Net weight              kg    73                  110                 110
Refrigerant     Liquid side             mm    Φ9.53               Φ12.7               Φ12.7
piping          Vapor side            mm      Φ16                 Φ19                 Φ19
Operation temp                            ℃   17~30               17~30               17~30
Ambient temp                              ℃   18~45               18~45               18~45




                                                              3
                    Model                           MHA-26CR          MHA-26HR         MHA-24HRN2
Power source                                 220V~240V ,50Hz   220V~240V ,50Hz   220V~240V ,50Hz
                 Capacity          BTU/H     26000             26000             24000
                 Input                W      3150              3250              3350
  Cooling
                 Running current       A     14.8              15.2              14.9
                 EER           BTU/W.H       8.3               8.0               7.2
                 Capacity          BTU/H     -                 27800             27600
  Heating        Input                W      -                 2860              2900
                 Running current       A     -                 13.8              12.7
Max. input consumption                W      4700              4650              4400
Max. input current                     A     26.2              24.1              23.0
                 Model                       ZR34KH-PFJ-522    ZR36K3-PFJ-522    HQ034PAA
Compresso        Type                        SCROLL            SCROLL            SCROLL
     r           Brand                       COPELAND          COPELAND          LG
                 Refrigerant oil      ml     1242              1242              750
Refrigerant type                         g   1500/ R22         2950/ R22         2500/R407C
Design pressure                     MPa      2.6               2.6               2.6
Indoor     fan   Input               W       360               360               360
motor            Capacitor            uF     10                10                10
  Air flow       High fan           m3/h     1600              1600              1600
  (indoor)       Low fan            m3/h     1120              1120              1350
Noise Level      High               dB(A)    52                52                54
  (indoor)       Low               dB(A)     50                50                50
Outdoor fan      Input               W       138               138               60
motor            Capacitor           uF      3.5               3.5               3.0.
Noise lever (outdoor)              dB(A)     60                60                58
                 Dimension(W*H*D)            850X380X660       850X380X660       850X380X660
Indoor unit      Packing     (W*H*D)         1075X495X775      1075X495X775      1075X495X775
                 Net weight           kg     52                52                52
                 Dimension(W*H*D)            895x860x350       895x860x350       895x860x302
 Outdoor
                 Packing     (W*H*D)         1000X985X410      1000X985X410      1000X985X410
    unit
                 Net weight           kg     73                79                73
Refrigerant      Liquid side         mm      Φ9.53             Φ9.53             Φ9.53
piping           Vapor side          mm      Φ16               Φ16               Φ16
Operation temp                         ℃     17~30             17~30             17~30
Ambient temp                             ℃   18~45             -7~45             -7~45




                                                       4
                    Model                          MHA-36HRN2         MHA-42HRN2         MHA-48HRN2
Power source                                 380V 3N~ 50Hz      380V    3N~ 50Hz   380V 3N~ 50Hz
                 Capacity          BTU/H     36000              42000              48000
                 Input                W      4900               5560               5700
  Cooling
                 Running current       A     8.2                9.4                9.6
                 EER           BTU/W.H       7.3                7.6                8.4
                 Capacity          BTU/H     40000              47000              53000
  Heating        Input                W      5400               6300               6450
                 Running current       A     9.1                10.2               10.8
Max. input consumption                W      6500               7000               7700
Max. input current                     A     11.6               11.9               12.4
                 Model                       C-SBN373H8A        C-SBN373H8A        C-SBN373H8A
Compresso        Type                        SCROLL             SCROLL             SCROLL
     r           Brand                       SANYO              SANYO              SANYO
                 Refrigerant oil      ml     1700               1700               1700
Refrigerant type                         g   4050/ R407C        4050/ R407C        4050/ R407C
Design pressure                     MPa      2.6                2.6                2.6
Indoor     fan   Input               W       600                600                600
motor            Capacitor            uF     12                 12                 12
  Air flow       High fan           m3/h     3000               3400               3400
  (indoor)       Low fan            m3/h     2700               2800               2900
Noise Level      High               dB(A)    55                 55                 55
  (indoor)       Low               dB(A)     52                 52                 52
Outdoor fan      Input               W       150                150                150
motor            Capacitor           uF      3.5                3.5                3.5
Noise lever (outdoor)              dB(A)     65                 65                 65
                 Dimension(W*H*D)            1200X380X660       1200X380X660       1200X380X660
Indoor unit      Packing     (W*H*D)         1425X495X775       1425X495X775       1425X495X775
                 Net weight           kg     65                 65                 65
                 Dimension(W*H*D)            940x1245x360       940x1245x360       940x1245x360
 Outdoor
                 Packing     (W*H*D)         1020X1370X435      1020X1370X435      1020X1370X435
    unit
                 Net weight           kg     112                112                112
Refrigerant      Liquid side         mm      Φ12.7              Φ12.7              Φ12.7
piping           Vapor side          mm      Φ19                Φ19                Φ19
Operation temp                         ℃     17~30              17~30              17~30
Ambient temp                             ℃   -7~45              -7~45              -7~45




                                                       5
3. Electric Function
  No.                   Item                                 Index
  1          Applicable Voltage Range           198-242V (SINGLE PHRASE)
                                                   343-418V (3- PHRASE)
  2               A/C Frequency                              50HZ
  3             Working environment                      -7°C- +45°C
                   temperature


3.1 Operation Mode
Operation mode can be set into auto, cooling, heating, dehumidifying and fan mode.

3.2 Temperature range can be set between: 17°C -30°C

3.3 Compressor
3.3.1 The compressor, which is controlled by contactor, will in turn make it act through relay when main
      chip output is high level.
3.3.2 Auxiliary start-up function: when the compressor starts up with single phrase, the main chip output
      will be in high level. 4 seconds after start-up circuit is engaged, the main chip output will be in low
      level and the start-up circuit shut down.
3.3.3 The compressor will remain operation when defrosting ends.

3.4 Indoor Fan
The motor is a tapping motor with iron-made outer cover and high, low and fine tuning speed selections
driven by three relays separately. The main chip will act when its output is high level. Under any
circumstances, only one fan speed is allowed.


3.5 Outdoor Fan
The motor is a tapping motor with iron-made outer cover and high, low speed options controlled by relays
separately. The main chip acts when its output is high level.


3.6 Buzzer
3.6.1 It will buzz when its driving port in the main chip outputs high level.
3.6.2 It will buzz twice with each lasting 0.5 second at 0.5 intervals when the main frame receives remote
      start-up signal.
3.6.3 It will buzz once for 1 second when receiving turn-off signal.
3.6.4 It will buzz for 0.5 second once receiving other signal.
3.6.5 It will not buzz when receiving abnormal signal.


3.7 Indicator
3.7.1 There are 4 indicators: operating indicator, timer indicator, water level warning indicator, defrosting
      indicator and pre-heating indicator (wind-delivery indicator for cooling-only A/C).
3.7.2 The light-emitting diode driven by the main chip will light when the level is low.
3.7.3 LED indicates errors when protection is in effective.
3.8 Four-way Valve
It is controlled by relays. The main chip acts when output is high level.

                                                     6
3.9 Heating Condition for Crankcase
3.9.1 The crankcase will be heated when the temperature of the outer pipe is below 7°C and the
      compressor is off.
3.9.2 The crankcase will no longer be heated when the temperature of the outer pipe is over 15°C.
3.9.3 The crankcase will no longer be heated when the compressor is on.
3.10 Selection Channel for Quick Check
The main frame will enter the quick check status if the channel is in low position when energizing. 1
minute will be shortened to 1 second during this period, however, other status will remain unchanged.


4. Technological Requirement
4.1 Manual Operation
4.1.1 The manual operation mode is controlled through “manual” pad in the wind in-take grid, including
      such two modes as manual action and manual cooling. Push the manual pad for each switchover,
      the order for which is shown below:
  REMOTE CONTROL                  MANUAL ACTION                   MANUAL COOLING




4.1.2 Manual Cooling
4.1.2.1 Under this mode, no remote control signal will be received.
4.1.2.2 The compressor is started up unconditionally and the rotating speed of indoor and outdoor fans
        is set to be in high and forced cooling operation. At the same time, the wind grille is forced to
        swing (irrelevant to temperature setting and environment temperature) and will be automatically
        switched over to manual mode 30 minutes later, under which manual mode will be in effective.
4.1.2.3 Under this mode, the buzzer will buzz twice with each lasting 0.5 second at 0.5 interval. During
        the first 30 minutes of unconditional forced cooling operation, the operation indicator will blink at
        0.5Hz. In the process of switchover to manual action mode, the buzzer buzzes for 0.5 second
        and the indicator is illuminated.
4.1.2.4 Under this mode, the corresponding protections are in effective (3- minute delayed start-up,
        over current, outdoor protection and evaporator low temperature protection.). Corresponding
        protection will act once any protection is in active.
4.1.2.5 Push “manual” pad once to end this mode and enter the remote control pending status. The
        buzzer will buzz for 1 second and the indicator turn off.

4.1.3 Manual Action
4.1.3.1 Under this mode, the remote signal will be received and corresponding actions will be taken
        accordingly upon the receipt of the remote signal.
4.1.3.2 On entering this mode, the buzzer will buzz for 0.5 second and the indicator on.
4.1.3.3 The system will operate under the auto mode whose temperature is set to be 24°C and at the
        same time, the wind grille will swing automatically.
4.1.3.4 Under this mode, corresponding protections are in effective.
4.1.3.5 Push “ manual” pad to end this mode and switchover to manual cooling mode.




                                                     7
4.2 Heating Mode
4.2.1 Four-way valve opens at once, while defrosting process closes.
4.2.2 Condition for the compressor action: (Ts = set temperature, Ta = room temperature)

          Room temperature up,                          Room temperature down,
          the compressor and outdoor fan stop
Ts+4°C                                             the compressor and outdoor fan stop
         The compressor and outdoor fan open                                       Ts+3°C
                                                   The compressor and outdoor fan open
 4.2.3 Indoor Fan Action
4.2.3.1 Anytime remote switchover for fan speed among high/low/auto, (anti-cold air function takes
          priority).
4.2.3.2 Anti-cold air:
     Switchover between fan speed and fine tune can be set according to temperature of evaporator pipe
     (Tci).

               Just entering heating mode                      when Tci is down
               or when Tci is up
                 Set fan speed
    32°C
                                                        Set fan speed
                   Breeze
    25°C

                 Indoor fan shutdown                                                 30°C

                                                              Breeze
                                                                                     15°C
                                                             Indoor fan shutdown
     During anti-cold air period, if indoor fan is shut down, then pre-heating/defrosting lamp is on. Once
     indoor fan starts, pre-heating/defrosting lamp will be off.
4.2.3.3 Auto fan of indoor fan under heating mode (Ts = set temperature)

               Auto fan begins or                 when room temperature is down
               When room temperature is up
                Low fan

                High fan                           Low fan
                                                   High fan

4.3. Defrost (only available to heating mode)
4.3.1. Defrosting Conditions
4.3.1.1 Low temperature defrosting condition:
      Accumulated operating time when temperature of outdoor heat exchanger coil T3 is below -2°C
      reaches up to over 40 minutes.

                                                    8
4.3.1.2 High temperature defrosting condition:
       Under high temperature protection of evaporator, the time when outdoor fan is shut down but
compressor is not has been accumulated for up to 90 minutes. It is considered that defrosting is performed when
either (1) or (2) is met.
4.3.2 Defrosting Action
     Four-way valve, indoor fan, outdoor fan are shut down.
     Compressor keeps on continuously.
4.3.3. Ending of Defrosting Condition
     It is considered that defrosting condition is ended when any of the conditions is met:
4.3.3.1 Operating current of compressor reaches 1.5Ie.
4.3.3.2 Time of defrosting reaches 10 minutes.
4.3.3.3 Temperature of outdoor coil T3 is up to 20°C.
4.3.4. Ending Action of Defrost
4.3.4.1 Outdoor fan and four-way valve are open.
4.3.4.2 Compressor keeps on continuously.
4.3.4.3 Indoor fan acts according to anti-cold air function.
4.3.4.4 Defrosting/pre-heating lamp continues to be on until indoor fan starts up.
4.4 Cooling Mode
4.4.1. Four-way valve is closed. If four-way valve is open before the machine enters cooling mode, then
          four-way valve will be closed at the first time the compressor starts under the cooling mode.
4.4.2. Conditions for the compressor and outdoor fan action (Ts = set temperature)
          Just entering cooling mode            When room temperature is up
          or room temperature is down            compressor and outdoor fan is on



            Compressor and outdoor fan              Compressor and outdoor fan is off
            is on

        Compressor and outdoor fan is off


4.4.3. Action of Indoor Fan
4.4.3.1 HIGH/LOW/AUTO fan can be switched over for your comfort.
4.4.3.2 Auto fan under cooling mode

                                                When room temperature is up

          Just entering auto fan                            high fan
         or when room temperature                                                      Ts +4°C
            is down                                       low fan

                  high fan
    Ts +1°C
                  low fan




                                                      9
4.5 Dehumidifying Mode
4.5.1 Dehumidifying mode is the cooling operation, under which the indoor fan is high and
      outdoor fan is low.
4.5.2. If certain protective condition is met, operation will be carried out.
4.6 Auto Mode
4.6.1 Under auto mode, the indoor fan is set to be auto (refer to auto fan under cooling,
          heating).
4.6.2 When entering auto mode, the heating, fan only or cooling operation will be
          automatically chosen according to the room temperature Ta and the set
          temperature Ts.
       A. When Ta < Ts - 1°c, it performs the heating operation with a set temperature of
           Ts - 10°c (refer to the heating mode). However the cool only model will be in low
           fan.
       B. When Ts + 2°c ≥ Ta ≥ Ts - 1°c, it will be in low fan. When Ta > Ts +2°c, it
           performs the cooling operation with a set temperature of T (refer to the cooling
            mode).
4.6.3 After one mode is chosen, if the condition Ta > Ts+1°c or Ts < Ts - 4°c lasts for 15
         minutes, meanwhile the compressor doesn't start up within consecutive 15 minutes,
         the operation mode will be re-chosen according to the Ta and Ts.
4.6.4 If certain condition is met, then the corresponding protective function will be
         executed.
4.7. Fan Delivery Mode
4.7.1. Under this mode, four-way valve, compressor and outdoor fan are shut down.
4.7.2. High/Low/Auto fan can be switched over through manual control. Auto fan will be
controlled in line with cooling auto fan with temperature set to be 23°C.
4.7.3. Under this mode, operation lamp will be on.

5. LED Display
       LED lamp on/off belongs to one of the output responses of the above modes.
       air-conditioner has: operation lamp, timer lamp, defrosting/pre-heating lamp, and
       water level alarm lamp.
5.1. Operation Lamp
5.1.1 When the operation is recovering, it will blink at 1 Hz.
5.1.2 After the air-conditioner is on, the lamp will keep on.
5.1.3 After the air-conditioner is off, the lamp will be off.
5.1.4 When the air-conditioner is switched over from manual cooling to remote control,
         the lamp will be off.
5.2. Timer Lamp
     During timer operation, it will be on.
5.3. Defrosting/Pre-heating Lamp
    When C/W model performs defrosting or anti-cold air, it will be on.
5.4 In addition to displaying normal operation status, these lamps can be combined to
indicate various errors. For details, refer to article 8.


                                            10
6.Timer
The machine should be provided with max. Interval of 24h and min. resolution ratio of 15
minutes. Off timer:
6.1     Timer on: set the start-up before closing down the A/C. At this moment, operation
        lamp will be off. Timer indicator is on and the A/C will start when the set time is up.
6.2     Off timer: if closedown time for the A/C is set, the A/C will close down when the set
        time is up.
6.3     On/off timer: set start-up time and close down time before closing the A/C, it will
        start when the set start-up time is up and close down when the set close down time
        is up.
6.4     Off/on timer: if both close down time and start-up time are set, it will close down
        when the set time is up and start automatically when the set start-up time is up.
Note: The timer is valid for one operation of the A/C.

7. Protective Function
       3-minute delay for the compressor start-up:
       At the beginning of energizing or after the stop of the compressor, 3-minute delay will
       be needed to start the compressor.
       When switching over between cooling/heating mode, the compressor stops
       automatically.
7.2. Overload Protection
7.2.1 Compressor Overload Function
Compressor current examination and action


               current                          3 seconds later, the compressor / outdoor fan close down

        30.8                                    5 minutes later, the compressor / outdoor fan close down



    23.1



    20A
                  Recover restart the outdoor fan (works only when heating)




7.2.1      The compressor and outdoor fan closed for protection purpose will restart after 3
           minutes.
7.2.2      During the protection, the indoor fan continues working at a set speed, while the
           anti-cold air function of heating and the compressor will be 3 minutes delayed to
           shut down for protection.
7.2.3      When there are 4 times compressor protection within one hour, the A/C will be shut
           down, meanwhile the operation light and timer light will be turned on, the defrosting


                                                 11
          light flashes at a frequency of 0.5Hz.        This situation will be recovered only when
          power is switched off.

7.3      Evaporator Protection against High Temperature
7.3.1. Only available under heating status, it includes heating operation in heating mode,
        auto mode and economic mode.
7.3.2. The operation principle is as follows: (T2 = evaporator temperature)
               T2 is up
            Compressor off              T2 is down
 60°C


            outdoor fan off
 56°C                                      protection
             outdoor fan low fan                                         54°C
 50°C                                    compressor on
             normal operation                                            45°C
                                           protection discharged
                                           outdoor fan on
※ Note: During protection, the indoor fan continues operating at a set speed, while the anti-cold air
   function of heating and the compressor will be 3 minute delayed to shut down for protection.
7.4     Evaporator Protection against Low Temperature
7.4.1 Only available under cooling and dehumidifying status, it includes cooling operation in
cooling mode, auto mode and economic mode.
7.4.2. Protection principle:
7.4.1     When the evaporator pipe temperature ≤ 2°c and this lasts for 5 minutes, the
          compressor and outdoor fan will be shut off.
7.4.2     When the evaporator pipe temperature ≥ 7°c, it recovers.
7.4.3     When T3<31°c, outdoor fan performs low fan
7.4.4     When T3≥ 31°c, outdoor fan performs high fan.
7.4.5     The restart of the compressor shall execute the delay protection.
7.5     Anti-cold Air Protection
7.5.1 Only available to heating mode, including heating mode, heating operation under auto
       mode.
7.5.2 For protective rules, refer to 4.2.3. Art. (2).
.7.6    Condenser High Temperature Protection
7.6.1 Only available to cooling (incl. cooling mode, cooling operation under auto mode)
         and dehumidifying mode.


                                                  12
7.6.2 Action condition


          When T3 is up                when T3 is up
          compressor off
65°c
           normal operation            compressor off
                                                                60°c
                                        protection discharged




7.6.3. Delay protection should be performed when the compressor restarts.
7.7. Single Phrase Compressor Start-up Control
Single phrase compressor must have start-up circuit:
1 second before the start-up of the compressor, the chip will output high level consecutively
for 5 seconds in order to engage the start-up capacitor that will be open afterwards.
7.8. Outdoor Protection
7.8.1. When outdoor protection signal is high level, outdoor door unit will perform protection:
the whole machine will be shut down while the LED will indicate the corresponding
protection signal.
7.8.2. The A/C will recover if outdoor errors are eliminated after the outdoor protection
occurs.
8.     Other Functions
       Self-check
At the beginning of energizing, if self-check channel outputs low level, then the machine will
enter self diagnose mode, under which each output channel will output 0.5 second high
level in turn. Then, it will enter normal pending mode.




                                              13
9. Self-diagnosis

No.    Type         Contents                                 LED Flashing                     Remark
1      Protection   Over current protection of        the    Lamps of operation, timer,       Whole unit is shut
                    compressor occurs 4 times in 1h          defrosting (only fan delivery)   down. It cannot
                                                             flashing simultaneously at       recover       unless
                                                             5Hz.                             power is cut off
2      Protection   Outdoor protection (absent phrase,       All lamps flashing at 5Hz
                    phrase sequence and temperature
                    protection)
3      Error        Room temperature sensor checking         Timer lamp flashing at 5Hz       Recover
                    channel is abnormal                                                       automatically after
                                                                                              error are eliminated
4      error        Evaporator sensor checking channel       Operation lamp flashing at
                    is abnormal                              5Hz
5      error        Condenser sensor checking channel        Defrosting lamp flashing at
                    is abnormal                              5Hz
6      error        Temperature fuse is melt (reserved)      Operation lamp and timer
                                                             lamp flashing at 5Hz



10.   System Control Precision
       Temperature sampling precision:±1°c
       Current sampling precision: ±1.5A
       Timer time precision: ±10second/hour
       Swing angle precision: 0.7°


11.   Remote Control
      At the beginning of energizing, the machine is under remote control with its operation
      lamp flashing on and off at 0.5 seconds separately. When manual cooling or manual
      auto is back to remote control, all lamps are off and buzzer buzzes for 1 second, then
      shutdown status will be followed.




                                                        14
12.         Wiring Diagram

12.1 MHA-26CR (220-240V)




                                     2
      RT3           XS1 XP1
                                            CN38




                                                       CURRENT DETECTOR
                                   3                   BOARD
                                            CN37




                                                      CN36            CN35                 T5

              FAN 2                                                                                     RED                                      CODE   PART NAME
                                                                                          KM1
                                                   YELLOW




                                                                                                                                Y&G
            WHITE

                    WHITE



                                  BROWN



                                                   BLACK

                                                            BLACK
                                          BLUE




                                                                                      1            2            RED
                                                                    RED




                            XT6                                           RED         3            4
                                                                                      5            6            RED

                                                                                                                        C
            CAP2                                                                                                                S
                                                                                                                        COMP
                                                                                RED




                                                                                                                            R
                                                                                                                                         WHITE
                                                                                                        BLACK




                                                                                                                        BLACK




                                                                                                                BLACK
       3                    4              XT4
                                                                                                                 Y&G                C1
                                                       BLACK

       XS3                  XS4
                                                            XT3
       XP3                  XP4

        3                   4
                                                                                RED

                                                                                          BLACK
                                                                                                  Y&G




  TO INDOOR UNIT                                                          TO INDOOR UNIT




                                                                                                                                15
12.2 MHA-26HR(220-240V)




                          16
12.3 MHA-26CR (380V)




                                                                      3           XP5 XS5           3
                                                                                                         TO INDOOR UNIT XP3
                                                                                              2
                                                                                                        XP4
                                               CN305             CN304                                  XS4
                      WHITE
          FAN2
                                           CN303




                                                                                                        RT3
                                                                                  T5
             YELLOW
    RED




                                  YELLOW




                                               CN302                  CN301
                                                                                              RED
                                                             YELLOW
                                                   BLACK



                                                              WHITE
                                                              BLUE
                                                               RED




     CAP2

                              BLACK                                                                     KM1
                                                                                                  A2           A1
                                                                                                   1           2
                                                                                             WHITE 3           4
                                 XT5                                                               5           6
                                                                                              BLUE
                                                                                                        BLUE
                                                   BLACK
                                                                                                        W     V WHITE
                         K2                                                                              COMP         RED
                                                                                                          U
                         K1                                                                                         Y&G
           YELLOW
            BROWN
             BLUE
             RED




                                                                                       Y&G


          1 2 3 4                                                 A       B   C   N
                                                                  WHITE

                                                                  BLACK
           YELLOW




   XT4
                                                                   BLUE




                                                           XT3
            BLACK
            GREEN




                                                                    RED




                                                                    Y&G
             RED




     TO INDOOR UNIT                                          TO INDOOR UNIT




                                                                                                              17
12.4 MHA-26HR (380V)




                                                                        3           XP5 XS5                       3
                                                                                                                       TO INDOOR UNIT XP3
                                                                                                            2
                                                                                                                      XP4
                                                 CN305             CN304                                              XS4
                      WHITE
          FAN2
                                             CN303




                                                                                                                      RT3
                                                                                     T5
             YELLOW
    RED




                                    YELLOW




                                                 CN302                  CN301
                                                                                                            RED
                                                     BLACK




     CAP2
                                                                                                                 RED
                               BLACK                                                                          A1 KM1 A2
                                                                                                               1     2
                                                                                                         WHITE 3     4
                                   XT5                                                                         5     6
                                                                                                          BLUE
                                                                            4
                                                                                                                      BLUE
                              K2                BLACK
                                                                                                                      W     V WHITE
                                                BROWN                                                                  COMP         RED
                          K1                                                                                            U
              S.V.T




                                                                                                    B.H.T
                                                                                    YELLOW
                                                                   RED
                                                                   WHITE




                                                                                                                                 Y&G
                                                                   BLUE
           YELLOW
           BROWN
            SMALT
            BLUE
             RED




                                                                                                   Y&G

           1 2 3 4 5 6                                              A       B   C    N
                                                                   WHITE

                                                                   BLACK
           GREEN
           YELLOW
           BROWN




                                                                    BLUE




   XT4                                                       XT3
            BLACK




                                                                     RED




                                                                                             Y&G
             BLUE
             RED




         TO INDOOR UNIT                                            TO INDOOR UNIT




                                                                                                                            18
12.5 MHA-36CR ,MHA-48CR




                                                                       XS8       XP8
                                                              3 OR 2                   RT3
                                        CN304
                                                                             XP7 XS7 3
                                                          CN305                              TO INDOOR UNIT XP3
                           UNIT3
                                                              CN303
                                                                                                           FAN2
                           TT1
            CN301                                 CN302
                                                                                                           RED




                                  RED

                             A2    KM1 A1               RED
                             1               2                                   K1                         FAN3
                             3               4
                             5               6
                                                                                               XT5
                    BLUE
                             21              22

        4                               WHITE
                                                    RED
                                         V
                                                    U
                                         COMP

                                         W                                                           XT7




                                                              XT4
                                                                       RED




 TO INDOOR UNIT XT1                                                 TO INDOOR UNIT XT1




                                                                                                     19
12.6 MHA-36HR,MHA-48HR, MHA-36HRN2,MHA-48HRN2




                                                                             XS8 XP8

                                                              3 OR 2                      RT3
                                        CN304
                                                                             XP7 XS7 3
                                                          CN305                                 TO INDOOR UNIT XP3
                           UNIT3
                                                          CN303
                                                                                                                 FAN2
                           TT1
            CN301                                 CN302
                                                                                                                 RED




                                  RED

                             A1 KM1          A2         RED
                             1               2                                            K1                      FAN3
                             3               4
                             5               6                                                       XT5
                    BLUE                                RED
                             21              22
                                                                                          BLUE
        4                               WHITE
                                                    RED                                        XT6
                                         V
                                                    U
                                         COMP           HEAT

                                                                                                                       S.V.
                                         W                                                                 XT7




                                                              XT4
                                                                                 YELLOW
                                                                       RED




 TO INDOOR UNIT XT1                                                 TO INDOOR UNIT XT1




                                                                                                           20
12.7 MHA-24HRN2




                                                 CAP1
                                                 CN1-CN16
                                                 T4
                                                 FAN1
                                                 RT1

                                                 RT2
                                                 XP1-XP3

                                                 XS1-XS3
                                                 XT1




                  L   N   1   2   3        XT1




                                      21
   ITEM                        NAME
                        CRANECASE HEATING
    C1        CAPACITY FOR COMPRESSOR RUNNING
  C3,C4       CAPACITY FOR COMPRESSOR STARTING


   CAP1               CAPACITY FOR INDOOR FAN
   CAP2              CAPACITY FOR OUTDOOR FAN
  CNO-16                 P.C.BOARD SOCKET
  COMP                     COMPRESSOR
    CT               CURRENT MUTUAL INDUCTOR
  F1+F2                  THERMAL CUT-OUT
   FAN1                     INDOOR FAN
   FAN2                    OUTDOOR FAN
    K1         TEMPERATURE PROTECTION SWITCH
    K2                 PIPE OVERLAOD SWITCH
    K3           WATER LEVEL WARNING SWITCH
    K4           THERMAL PROTECTION SWITCH
   KM1                    A/C CONTACTOR
 KM2,KM3                      RELAY
    M                      SWING MOTOR
  PUMP                      DRAIN PUMP
  R1-R3                ELECTRIC HEATING PIPE
    RS                  RELEASE RESISTANCE
   RT1               ROOM TEMPERATURE SENSOR
 RT2,RT3             PIPE TEMPERATURE SENSOR
   S.V.T                    4-WAY VALVE
   KP1                  MIDDLE CONNECTOR
 XS1-XS3                MIDDLE CONNECTOR
XT1,XT2,XT4            6-WAY TERMINAL BLOCK
   XT3           3-WAY BIGGER TERMINAL BLOCK
   XT5                MIDDLE TERMINAL BLOCK
    T4                     TRANSFORMER




                22

								
To top