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16

ENGLISH

OPERATION TIPS

The following events may occur during normal operation.

1. Protection of the air conditioner.

Compressor protection

The compressor can’t restart for 3 minutes after it stops.
Anti-cold air (Cooling and heating models only)

The unit is designed not to blow cold air on HEAT mode, when the indoor heat exchanger is in one of the following
three situations and the set temperature has not been reached.
A)   When heating has just starting.
B)   Defrosting.
C)   Low temperature heating.

The indoor or outdoor fan stop running when defrosting (Cooling and heating models only).
Defrosting (Cooling and heating models only)

Frost may be generated on the outdoor unit during heat cycle when outdoor temperature is low and humidity is
high resulting in lower heating efficiency of the air conditioner.

During this condition air conditioner will stop heating operation and start defrosting automatically.

The time to defrost may vary from 4 to 10 minutes according to the outdoor temperature and the amount of frost
buildup on the outdoor unit.

2. A white mist coming out from the indoor unit.

A white mist may generate due to a large temperature difference between air inlet and air outlet on COOL mode
in an indoor environment that has a high relative humidity.

A white mist may generate due to moisture generated from defrosting process when the air conditioner restarts in
HEAT mode operation after defrosting.

3. Low noise of the air conditioner

.

You may hear a low hissing sound when the compressor is running or has just stopped running.
This sound is the sound of the refrigerant flowing or coming to a stop.

You can also hear a low “squeak” sound when the compressor is running or has just stopped running. This is
caused by heat expansion and cold contraction of the plastic parts in the unit when the temperature is changing.

A noise may be heard due to louver restoring to its original position when power is first turned on.

4. Dust in blown out from the indoor unit.

This is a normal condition when the air conditioner has not been used for a long time or during first use of the unit.

5. A peculiar smell come out from the indoor unit.

This is caused by the indoor unit giving off smells permeated from building material, from furniture, or smoke.

6. The air conditioner turns to FAN only mode from COOL or HEAT (for cooling and heating models only) mode.

When indoor temperature reaches the temperature setting on air conditioner, the compressor will stop automatically,
and the air conditioner turns to FAN only mode. The compressor will start again when the indoor temperature rises on
COOL mode or falls on HEAT mode (for cooling and heating models only) to the set point.

7.

Dripping water may generate on the surface of the indoor unit when cooling in a high relatively humidity (relative
humidity higher than 80%). Adjust the horizontal louver to the maximum air outlet position and select HIGH fan speed.

8. Heating mode (For cooling and heating models only)

The air conditioner draws in heat from the outdoor unit and releases it via the indoor unit during heating operation.
When the outdoor temperature falls, heat drawn in by the air conditioner decreases accordingly. At the same time,
heat loading of the air conditioner increases due to larger difference between indoor and outdoor temperature. If a
comfortable temperature can’t be achieved by the air conditioner, we suggest you use a supplementary heating device.

9. Auto-restart function

Power failure during operation will stop the unit completely.
For the unit without Auto-restart feature, when the power restores, the OPERATION indicator on the indoor unit starts
flashing. To restart the operation, push the ON/OFF button on the remote controller. For the unit with Auto-restart
feature, when the power restores, the unit restarts automatically with all the previous settings preserved by the memory
function.

10.Lightning or a car wireless telephone operating nearby may cause the unit to malfunction.

Disconnect the unit with power and then re-connect the unit with power again. Push the ON/OFF button on the remote
controller to restart operation.

J199.pmd

31/03/2005, 9:54 PM

16

Summary of Contents for MACC-MAHC 07-24

Page 1: ... Manual MODELS MLCA MLHA 07 24 MLCB MLHB 07 24 MACC MAHC 07 24 MINISPLIT HIGH WALL AIR CONDITIONER EN035M80013 000 The units comply with one or more of the following marks see unit for details J199 pmd 31 03 2005 9 52 PM 1 ...

Page 2: ...tion Quality POLICY We will continuously strive to satisfy our customers with consistent reli ability in product service and support through superior quality service culture and distinctive technology R22 50 Hz R22 60 Hz R407C 50 Hz R410A 50 Hz Set MLCAxxFSAAAA MLCAxxFSAADA MLCBxxFSAAAA MACCxxFSAAA MLHAxxFSAAAA MLHAxxFSAADA MLHBxxFSAAAA MAHCxxFSAAA Outdoor MLDAxxFS AAA MLDAxxFS ADA MLDBxxFS AAA MA...

Page 3: ...oning system should only be carried out by trained and qualified personnel After unpacking please check the unit carefully for possible damage Before undertaking any work on the unit make sure that the power supply has been disconnected WARNING CAUTIONS Do not store or unpack the unit in a wet area or expose to rain or water Do not install in a place where flammable gas may leak Do not conduct ins...

Page 4: ...dicator illuminates when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating operation 3 TEMPERATURE indicator Displays the temperature settings when the air conditioner is operational 4 OPERATION indicator This indicator flashes after power is on and illuminates when the unit is in operation 5 TIMER indicator This indicator illuminates ...

Page 5: ...ding on what temperature you have selected and the room temperature The air conditioner will control room temperature automatically around the temperature point set by you If the AUTO mode is uncomfortable you can select desired conditions manually SLEEP OPERATION When you push SLEEP button during cooling heating cooling only type without orAUTO operation the air conditioner will automatically inc...

Page 6: ...ORE INSTALLATION Before doing any work check the interior power supply cord and the main breaker capacity are sufficient and the installation area is sufficient and complies with the requirements Check that the power supply available agrees with name plate voltage Electrical work wiring and cables must be in compliance with national and local wiring codes and standard Do not use the extension cabl...

Page 7: ...245 5 420 128 780 48 10 45 548 115 90 266 272 298 285 290 530 110 62 590 750 MLDA MLJA 07 09 MLDB MLJB 07 09 MADC MAJC 07 MLDA MLJA 12 18 MLDB MLJB 12 MADC MAJC 09 12 MLDA MLJA 24 MLDB MLJB 24 MADC MAJC 18 24 MLDB MLJB 18 335 125 560 1 141 5 135 351 2 694 5 301 5 843 313 235 J199 pmd 31 03 2005 9 53 PM 7 ...

Page 8: ...n of 3 metres is required to minimise vibration excessive noise The indoor unit should be installed on the wall at a height of 2 3 metres or more from the floor A B and C directions should be free from obstructions 5 Remote controller 1 6 Self tapping screw B ST3 9X10 2 7 Remote controller holder 1 8 Seal 1 9 Drain joint 1 Liquid side 4 Gas side ø 6 35 ø 9 53 12000Btu h model ø 12 7 21000Btu h mod...

Page 9: ... may be unstable on the wall Carefully arrange pipes so that pipes do not stick out of the rear plate of the indoor unit A B C D E F MODEL 24 Right Right Right Right Left Rear Bottom Drain hose Drain hose is flexible and can be routed to suit various piping arrangements The drain line must include elbow trap U bend Connect a plastic condensate pipe with an internal diameter of 12 mm The drain hose...

Page 10: ...at any pipe vibrations cannot be transmitted to the building structure Connect the pipe correctly Do not apply the excessive torque Use an appropriate bending tool to form curves and avoid over tightening the refrigerant tubes To prevent heat loss the two lines must be insulated separately Maximum Piping Length The suction line must have a 2 gradient up to the compressor on horizontal sections Whe...

Page 11: ...ing piping length of 5 meters Liquid Cooling GAS Cooling suction Low pressure High pressure Manifold Gas valve Liquid valve Pressure tap Outdoor unit Indoor unit Gas line Liquid line R22 R407C R410A Outdoor heat pump unit install the unit at least 10 cm above ground level to facilitate drainage of defrost water and prevent accumulation of ice In effect defrost water can cause accumulation of ice u...

Page 12: ...led installation acceptance please refer to your contract with the power supplier if restrictions do apply for products like washing machines air conditioner or electrical ovens 4 For power details of the air conditioner refer to the rating plate of the product 5 For any question contact your local dealer Cautions Never modify the unit by removing any of the safety guards or by bypassing any of th...

Page 13: ...4 Te S 1 2 N Cooling heating type Cord clamp 1 2 N 3 4 5 6 7 8 Terminal block of Outdoor unit 1 2 N S L N Terminal block of indoor unit Cooling only type cooling heating type Terminal block of indoor unit Cord clamp To outdoor unit To outdoor unit Terminal block of outdoor unit Wire holding board Terminal block of outdoor unit Cooling only type cooling heating type J199 pmd 31 03 2005 9 54 PM 13 ...

Page 14: ...itch back to heating mode when either of the following conditions is met a Unit has been running at defrosting mode for 10 minutes b T3 20 ºC Remark T3 is coil temperature of outdoor units 0 1 2 3 4 5 1 2 0 5 10 15 20 25 30 35 40 45 50 T3 C 3 min 40 min Heating mode Defrosting mode Time Elapsed min Starting Defrosting Mode under condition a NOTE The supply volyage must be consistent with the rate ...

Page 15: ...a day to dry the inside of the unit 2 Stop the air conditioner and disconnect power Remove the batteries from the remote controller 3 The outdoor unit requires periodic maintenance and cleaning Do not attempt to do this yourself Contact your dealer or servicer Checks before operation Check that the wiring is not broken off or disconnected Check that the air filter is installed Check if the air out...

Page 16: ...r unit This is a normal condition when the air conditioner has not been used for a long time or during first use of the unit 5 A peculiar smell come out from the indoor unit This is caused by the indoor unit giving off smells permeated from building material from furniture or smoke 6 The air conditioner turns to FAN only mode from COOL or HEAT for cooling and heating models only mode When indoor t...

Page 17: ...2 Insulate them separately together 3 The room was probably very hot 3 Wait while unit has enough time to cool when you started the cool the room system D The compressor runs continuously 1 Thermostat adjustment too low 1 Check thermostat setting in heating mode or too high in cooling mode 2 Faulty fan 2 Check condenser air circulation 3 Refrigerant charge too low leak 3 Find leak repair and recha...

Page 18: ...MLDA24 MLJA24 0 8 0 8 1 01 1 01 1 35 1 35 1 96 1 96 2 8 2 8 3 5 3 5 4 6 4 6 6 0 6 0 9 4 9 4 12 5 12 5 1 1 1 1 1 530 570 580 800 850 900 1130 1400 1450 1900 35 32 30 35 32 30 37 34 32 37 34 32 37 32 28 37 32 28 42 40 38 42 40 38 45 42 39 45 42 39 49 49 50 50 54 54 56 56 55 55 1 1 1 1 1 1 1 1 1 1 400 400 450 450 580 580 800 800 1080 1080 39 5 39 5 39 5 39 5 38 5 38 5 53 53 65 65 0 17 0 17 0 17 0 17 ...

Page 19: ...MLJA12 MLDA18 MLJA18 MLDA24 MLJA24 0 71 0 71 0 95 0 95 1 21 1 21 1 95 1 95 2 67 2 67 3 2 3 2 4 5 4 5 5 5 5 5 8 9 8 9 12 1 12 1 1 1 1 1 1 530 590 630 650 780 1050 1180 1450 1450 1900 35 32 30 35 32 30 35 32 30 35 32 30 37 32 28 37 32 28 42 40 38 42 40 38 48 45 42 48 45 42 52 52 52 53 56 56 56 56 58 58 1 1 1 1 1 400 400 400 400 580 580 800 800 1080 1080 31 31 31 31 31 31 53 53 150 150 0 14 0 14 0 14...

Page 20: ... MLDB18 MLJB18 MLDB24 MLJB24 0 78 0 78 1 1 1 35 1 35 1 96 1 96 2 73 2 73 3 5 3 5 4 4 4 4 6 0 6 0 9 4 9 4 12 5 12 5 1 1 1 1 1 680 700 820 850 900 1200 1400 1400 1950 2050 35 32 30 35 32 30 37 34 32 37 34 32 37 32 28 37 32 28 42 40 38 42 40 38 45 42 39 45 42 39 49 49 50 50 54 52 56 56 55 55 400 400 450 450 580 580 800 800 1080 1080 39 5 39 5 39 5 39 5 44 44 53 53 65 65 0 17 0 17 0 17 0 17 0 2 0 2 0 ...

Page 21: ...2 MADC18 MAJC18 MADC24 MAJC24 0 64 0 64 0 82 0 82 1 12 1 12 1 72 1 72 2 53 2 53 2 8 2 8 3 6 3 6 5 0 5 0 7 8 7 8 11 2 11 2 1 1 1 1 1 800 820 900 920 1050 1080 1690 1740 1900 1950 35 32 30 35 32 30 37 34 31 37 34 31 40 37 34 40 37 34 42 39 37 42 39 37 45 42 39 45 42 39 49 49 50 50 50 50 52 52 55 55 450 450 500 500 580 600 850 850 1080 1080 36 5 36 5 39 5 39 5 44 44 53 53 65 65 0 17 0 17 0 17 0 17 0 ...

Page 22: ...ods of lifting Note that any residual or spilt refrigerant oil should be mopped up and disposed of as described above 4 4 4 4 4 After removal from position the unit parts may be disposed of according to local laws and regulations INSTALLATION REMOVAL AND DISPOSAL INSTALLATION REMOVAL AND DISPOSAL INSTALLATION REMOVAL AND DISPOSAL INSTALLATION REMOVAL AND DISPOSAL INSTALLATION REMOVAL AND DISPOSAL ...

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