Mitsubishi Electric Split-Type Air Conditioners

Indoor Unit Operating Instructions

Safety Precautions

WARNING: This unit uses a flammable refrigerant. If refrigerant leaks and comes in contact with fire or heating part, it will create harmful gas and there is risk of fire.

Read the OPERATING INSTRUCTIONS carefully before operation.

Service personnel are required to carefully read the OPERATING INSTRUCTIONS and INSTALLATION MANUAL before operation.

i Further information is available in the OPERATING INSTRUCTIONS, INSTALLATION MANUAL, and the like.

Since rotating parts and parts which could cause an electric shock are used in this product, be sure to read these "Safety Precautions" before use.

Since the cautionary items shown here are important for safety, be sure to observe them.

After reading this manual, keep it together with the installation manual in a handy place for easy reference.

Marks and their meanings

WARNING: Incorrect handling could cause serious hazard, such as death, serious injury, etc. with a high probability.

CAUTION: Incorrect handling could cause serious hazard depending on the conditions.

Meanings of symbols used in this manual

WARNING

Do not connect the power cord to an intermediate point, use an extension cord, or connect multiple devices to a single AC outlet. This may cause overheating, fire, or electric shock.

Make sure the power plug is free of dirt and insert it securely into the outlet. A dirty plug may cause fire or electric shock.

Do not bundle, pull, damage, or modify the power cord, and do not apply heat or place heavy objects on it. This may cause fire or electric shock.

Do not turn the breaker OFF/ON or disconnect/connect the power plug during operation. This may create sparks, which can cause fire.

After the indoor unit is switched OFF with the remote controller, make sure to turn the breaker OFF or disconnect the power plug.

Do not expose your body directly to cool air for a prolonged length of time. This could be detrimental to your health.

The unit should not be installed, relocated, disassembled, altered, or repaired by the user. An improperly handled air conditioner may cause fire, electric shock, injury, or water leakage, etc. Consult your dealer.

If the power supply cord is damaged, it must be replaced by the manufacturer or its service agent in order to avoid a hazard.

When installing, relocating, or servicing the unit, make sure that no substance other than the specified refrigerant (R32) enters the refrigerant circuit. Any presence of foreign substance such as air can cause abnormal pressure rise and may result in explosion or injury.

The use of any refrigerant other than that specified for the system will cause mechanical failure, system malfunction, or unit breakdown. In the worst case, this could lead to a serious impediment to securing product safety.

This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

Do not insert your finger, a stick, or other objects into the air inlet or outlet. This may cause injury, since the fan inside rotates at high speeds during operation.

In case of an abnormal condition (such as a burning smell), stop the air conditioner and disconnect the power plug or turn the breaker OFF. A continued operation in the abnormal state may cause a malfunction, fire, or electric shock. In this case, consult your dealer.

When the air conditioner does not cool or heat, there is a possibility of refrigerant leakage. If any refrigerant leakage is found, stop operations and ventilate the room well and consult your dealer immediately. If a repair involves recharging the unit with refrigerant, ask the service technician for details.

The refrigerant used in the air conditioner is not harmful. Normally, it does not leak. However, if refrigerant leaks and comes in contact with fire or heating part of such a fan heater, kerosene heater, or cooking stove, it will create harmful gas and there is risk of fire.

The user should never attempt to wash the inside of the indoor unit. Should the inside of the unit require cleaning, contact your dealer. Unsuitable detergent may cause damage to plastic material inside the unit, which may result in water leakage. Should detergent come in contact with electrical parts or the motor, it will result in a malfunction, smoke, or fire.

The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater). Be aware that refrigerants may not contain an odour.

Do not use means to accelerate the defrosting process or to clean the appliance, other than those recommended by the manufacturer. Do not pierce or burn.

The indoor unit must be installed in rooms which exceed the floor space specified. Please consult your dealer. AP50: 1.7 m²

This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons.

CAUTION

Do not touch the air inlet or the aluminum fins of the indoor/outdoor unit. This may cause injury.

Do not use insecticides or flammable sprays on the unit. This may cause a fire or deformation of the unit.

Do not expose pets or houseplants to direct airflow. This may cause injury to the pets or plants.

Do not place other electric appliances or furniture under the indoor/outdoor unit. Water may drip down from the unit, which may cause damage or malfunction.

Do not leave the unit on a damaged installation stand. The unit may fall and cause injury.

Do not step on an unstable bench to operate or clean the unit. This may cause injury if you fall down.

Do not pull the power cord. This may cause a portion of the core wire to break, which may cause overheating or fire.

Do not charge or disassemble the batteries, and do not throw them into a fire. This may cause the batteries to leak, or cause a fire or explosion.

Do not operate the unit for more than 4 hours at high humidity (80% RH or more) and/or with windows or outside door left open. This may cause water condensation in the air conditioner, which may drip down, wetting or damaging the furniture. The water condensation in the air conditioner may contribute to growth of fungi, such as mold.

Do not use the unit for special purposes, such as storing food, raising animals, growing plants, or preserving precision devices or art objects. This may cause deterioration of quality, or harm to animals and plants.

Do not expose combustion appliances to direct airflow. This may cause incomplete combustion.

Never put batteries in your mouth for any reason to avoid accidental ingestion. Battery ingestion may cause choking and/or poisoning.

Before cleaning the unit, switch it OFF and disconnect the power plug or turn the breaker OFF. This may cause injury, since the fan inside rotates at high speeds during operation.

When the unit will be unused for a long time, disconnect the power plug or turn the breaker OFF. The unit may accumulate dirt, which may cause overheating or fire.

Replace all batteries of the remote controller with new ones of the same type. Using an old battery together with a new one may cause overheating, leakage, or explosion.

If the battery fluid comes in contact with your skin or clothes, wash them thoroughly with clean water. If the battery fluid comes in contact with your eyes, wash them thoroughly with clean water and immediately seek medical attention.

Ensure that the area is well-ventilated when the unit is operated together with a combustion appliance. Inadequate ventilation may cause oxygen starvation.

Turn the breaker OFF when you hear thunder and there is a possibility of a lightning strike. The unit may be damaged if lightning strikes.

After the air conditioner is used for several seasons, perform inspection and maintenance in addition to normal cleaning. Dirt or dust in the unit may create an unpleasant odor, contribute to growth of fungi, such as mold, or clog the drain passage, and cause water to leak from the indoor unit. Consult your dealer for inspection and maintenance, which require specialized knowledge and skills.

Do not operate switches with wet hands. This may cause electric shock.

Do not clean the air conditioner with water or place an object that contains water, such as a flower vase, on it. This may cause fire or electric shock.

Do not step on or place any object on the outdoor unit. This may cause injury if you or the object falls down.

● IMPORTANT

Dirty filters cause condensation in the air conditioner which will contribute to the growth of fungi such as mold. It is therefore recommended to clean air filters every 2 weeks.

Before starting the operation, ensure that the horizontal vanes are in the closed position. If operation starts when the horizontal vanes are in the open position, they may not return to the correct position.

Name of Each Part

Indoor unit

Front panel

Air filter

Air cleaning filter (V Blocking Filter)

Horizontal vane

Heat exchanger

Fan guard

Air outlet

Air inlet

Operation indicator lamp

Remote control receiving section

Wi-Fi interface (See page 13)

Spec name plate *1

Outdoor unit

Air inlet (back and side)

Spec name plate *1

Refrigerant piping

Drainage hose

Air outlet

Drain outlet

*1 The manufacturing year and month are indicated on the spec name plate.

Outdoor units may be different in appearance.

Remote controller

Battery replacement indicator (See page 5)

Operation display section

Emergency operation switch (See page 11)

Temperature buttons (See page 6)

Operation select button (See page 6)

ECONO COOL button (See page 8)

i-save button (See page 8)

NIGHT MODE button (See page 9)

CLOCK button (See page 5)

Signal transmitting section (Distance of signal: About 6 m. Beep(s) is (are) heard from the indoor unit when the signal is received.)

OFF/ON (stop/operate) button

FAN speed control button (See page 7)

WIDE VANE button (See page 7)

VANE control button (See page 7)

TIME, TIMER set buttons (See pages 5, 9)

forward button

backward button

WEEKLY TIMER set buttons (See pages 5, 10)

SET CANCEL

DAY

1~4

ON/OFF

TIME

TEMP

DELETE

CLOCK RESET

RESET button (See page 5)

Lid: Slide the lid down to open the remote controller. Slide it down further to get to the weekly timer buttons.

Remote controller usage notes:

Preparation Before Operation

Installing the remote controller batteries

  1. Remove the front lid.
  2. Insert the negative pole of AAA alkaline batteries first.
  3. Install the front lid.

Notes:

Setting current time

  1. Press CLOCK.
  2. Press either the TIME button or the TIMER buttons to set the time. Each press changes the clock 1 minute forward/backward (10 minutes when pressed longer).
  3. Press CLOCK again.
  4. Press the DAY button to set the day.

Note: Press CLOCK gently using a thin instrument.

How to set remote controller exclusively for a particular indoor unit

A maximum of 4 indoor units with wireless remote controllers can be used in a room.

To operate the indoor units individually with each remote controller, assign a number to each remote controller according to the number of the indoor unit. This setting can be set only when all the following conditions are met:

  1. Hold down 1~4 button on the remote controller for 2 seconds to enter the pairing mode.
  2. Press 1~4 button again and assign a number to each remote controller. Each press of 1~4 button advances the number in the following order: 1 → 2 → 3 → 4.
  3. Press SET button to complete the pairing setting.

After you turn the breaker ON, the remote controller that first sends a signal to an indoor unit will be regarded as the remote controller for the indoor unit. Once they are set, the indoor unit will only receive the signal from the assigned remote controller afterwards.

Selecting Operation Modes

DRY mode: Dehumidify your room. The room may be cooled slightly. Temperature cannot be set during DRY mode.

HEAT mode: Enjoy warm air at your desired temperature.

FAN mode: Circulate the air in your room.

Note: After COOL/DRY mode operation, it is recommended to operate in the FAN mode to dry inside the indoor unit.

Multi system operation: Two or more indoor units can be operated by one outdoor unit. When several indoor units are operated simultaneously, cooling/dry/fan and heating operations cannot be done at the same time. When COOL/DRY/FAN is selected with one unit and HEAT with another or vice versa, the unit selected last goes into standby mode.

Operation indicator lamp

The operation indicator lamp shows the operation state of the unit.

Indication Operation state Room temperature
Lit The unit is operating to reach the set temperature About 2°C or more away from set temperature
Lit The room temperature is approaching the set temperature About 1 to 2°C from set temperature
Blinking Standby mode (only during multi system operation) -

AUTO mode (Auto change over): The unit selects the operation mode according to the difference between the room temperature and the set temperature. During AUTO mode, the unit changes mode (COOL ↔ HEAT) when the room temperature is about 2°C away from the set temperature for more than 15 minutes.

Note: Auto Mode is not recommended if this indoor unit is connected to a MXZ type outdoor unit. When several indoor units are operated simultaneously, the unit may not be able to switch operation mode between COOL and HEAT. In this case, the indoor unit becomes standby mode (Refer to table of Operation indicator lamp).

COOL mode: Enjoy cool air at your desired temperature.

Note: Do not operate COOL mode at very low outside temperatures (less than -10°C). Water condensed in the unit may drip and wet or damage furniture, etc.

Operation steps:

  1. Press OFF/ON to start the operation.
  2. Press MODE to select operation mode. Each press changes mode in the following order: (AUTO) → (COOL) → (DRY) → (HEAT) → (FAN)
  3. Press Δ or to set the temperature. Each press raises or lowers the temperature by 1°C.
  4. Press OFF/ON to stop the operation.

Fan Speed and Airflow Direction Adjustment

Fan speed

Press FAN to select fan speed. Each press changes fan speed in the following order:

(AUTO) → (Silent) → (Low) → (Med.) → (High) → (Super High)

Notes:

Multi system operation: When several indoor units are operated simultaneously by one outdoor unit for heating operation, the temperature of the airflow may be low. In this case, it is recommended to set the fan speed to AUTO.

Up-down Airflow direction

Press VANE to select airflow direction. Each press changes airflow direction in the following order:

(AUTO) → (1) → (2) → (3) → (4) → (5) → (SWING)

Notes:

Left-right Airflow direction

Press WIDE VANE to select airflow direction. Each press changes airflow direction in the following order:

(SWING)

I-SAVE OPERATION

A simplified set back function enables to recall the preferred (preset) setting with a single push of the i-save button. Press the button again and you can go back to the previous setting in an instance.

  1. Press i-save during COOL, ECONO COOL, HEAT mode or NIGHT MODE operation to select i-save mode.
  2. Set the temperature, fan speed, and airflow direction. The same setting is selected from the next time by simply pressing i-save.
    • Two settings can be saved. (One for COOL/ECONO COOL, one for HEAT)
    • Select the appropriate temperature, fan speed, and airflow direction according to your room.
  3. Press i-save again to cancel i-save operation.
  4. i-save operation also is cancelled when the MODE button is pressed.

Note:

ECONO COOL OPERATION

Swing airflow (change of airflow) makes you feel cooler than stationary airflow.

The set temperature and the airflow direction are automatically changed by the microprocessor. It is possible to perform cooling operation while keeping comfort. As a result energy can be saved.

  1. Press ECONO COOL during COOL mode (See page 6) to start ECONO COOL operation. The unit performs swing operation vertically in various cycles according to the temperature airflow.
  2. Press ECONO COOL again to cancel ECONO COOL operation.
  3. ECONO COOL operation is also cancelled when the VANE button is pressed.

NIGHT MODE OPERATION

NIGHT MODE operation changes the brightness of the operation indicator, disables the beep sound and limits the noise level of the outdoor unit.

  1. Press NIGHT MODE during operation to activate NIGHT MODE operation.
    • The operation indicator lamp dims.
    • The beep sound will be disabled except that emitted when the operation is started or stopped.
    • Noise level of the outdoor unit will be lower than that mentioned in SPECIFICATIONS.
  2. Press NIGHT MODE again to cancel NIGHT MODE operation.

Notes:

TIMER OPERATION (ON/OFF TIMER)

  1. Press ON/OFF (ON timer) or OFF (OFF timer) during operation to set the timer. ON (ON timer): The unit turns ON at the set time. OFF (OFF timer): The unit turns OFF at the set time.
  2. ON or OFF blinks. Make sure that the current time and day are set correctly (See page 5).
  3. Press < (forward) and > (backward) to set the time of timer. Each press changes the set time 10 minutes forward/backward. Set the timer while ON or OFF is blinking.
  4. Press ON/OFF again to cancel timer.

Notes:

WEEKLY TIMER OPERATION

A maximum of 4 ON or OFF timers can be set for individual days of the week. A maximum of 28 ON or OFF timers can be set for a week.

Example: Runs at 24°C from waking up to leaving home, and runs at 27°C from getting home to going to bed on weekdays. Runs at 27°C from waking up late to going bed early on weekends.

Setting the weekly timer

  1. Make sure that the current time and day are set correctly.
  2. Press SET to enter the weekly timer setting mode. SET blinks.
  3. Press DAY and 1~4 to select setting day and number.
  4. Press ON/OFF, TIME, and TEMP to set ON/OFF, time, and temperature.
    • Pressing (ON/OFF) selects ON/OFF timer.
    • Pressing TIME adjusts the time.
    • Pressing TEMP adjusts the temperature.
    • Pressing DELETE deletes timer setting.
  5. Hold down the button to change the time quickly.
  6. Press DAY and 1~4 to continue setting the timer for other days and/or numbers.
  7. Press SET to complete and transmit the weekly timer setting. Point the remote controller toward the indoor unit for 3 seconds.
    • When setting the timer for more than one day of the week or one number, EDIT/SEND does not have to be pressed per each setting. Press SET once after all the settings are complete. All the weekly timer settings will be saved.
    • Press SET to enter the weekly timer setting mode, and press and hold DELETE for 5 seconds to erase all weekly timer settings. Point the remote controller toward the indoor unit.
  8. Press ON/OFF TIMER to turn the weekly timer ON. (WEEKLY lights.) When the weekly timer is ON, the day of the week whose timer setting is complete, will light.
  9. Press ON/OFF TIMER again to turn the weekly timer OFF. (WEEKLY goes out.)

Notes:

Checking weekly timer setting

  1. Press SET to enter the weekly timer setting mode.
  2. Press DAY and 1~4 to select setting day and number.
  3. Press DAY or 1~4 to view the setting of the particular day or number.
  4. Press CANCEL to exit the weekly timer setting.

Notes:

EMERGENCY OPERATION

When the remote controller cannot be used...

Emergency operation can be activated by pressing the emergency operation switch (E.O. SW) on the indoor unit.

Each time the E.O. SW is pressed, the operation changes in the following order:

Operation indicator lamp → Emergency COOL → Emergency HEAT → Stop

Set temperature: 24°C

Fan speed: Medium

Horizontal vane: Auto

Notes:

Auto Restart Function

If a power failure occurs or the main power is turned off during operation, "Auto restart function" automatically starts operation in the same mode as the one set with the remote controller just before the shutoff of the main power. When timer is set, timer setting is cancelled and the unit starts operation when power is resumed.

If you do not want to use this function, please consult the service representative because the setting of the unit needs to be changed.

Cleaning

Instructions:

Air filter (Air purifying filter)

Clean every 2 weeks

Remove dirt by a vacuum cleaner, or rinse with water. After washing with water, dry it well in shade.

Air cleaning filter (V Blocking Filter)

Every 3 months: Remove dirt by a vacuum cleaner. When dirt cannot be removed by vacuum cleaning: Soak the filter and its frame in lukewarm water before rinsing it. After washing, dry it well in shade. Install all tabs of the air filter.

Every year: Replace it with a new air cleaning filter for best performance.

Parts Number: MAC-2470FT-E

Front panel

  1. Lift the front panel until a "click" is heard.
  2. Hold the hinges and pull to remove as shown in the illustration above. Wipe with a soft dry cloth or rinse it with water. Do not soak it in water for more than two hours. Dry it well in shade before installing it.
  3. Install the front panel by following the removal procedure in reverse. Close the front panel securely and press the positions indicated by the arrows.

Important

Clean the filters regularly for best performance and to reduce power consumption. Dirty filters cause condensation in the air conditioner which will contribute to the growth of fungi such as mold. It is therefore recommended to clean air filters every 2 weeks.

Information based on REGULATION (EU) No 528/2012

MODEL NAME Treated Article (Parts name) Active Substances (CAS No.) Property Instruction for Use (Safe handling information)
MSZ-AP25/35/42/50VG FILTER Dimethyloctadecyl [3-(trimethoxysilyl)propyl]ammonium chloride (27668-52-6) Antivirus, Antibacterial, Antimold Use this product in line with the instruction manual indications and for the intended purpose only. Do not put into mouth. Keep away from children.
MAC-2470FT-E FILTER Silver sodium hydrogen zirconium phosphate (265647-11-8) 2-octyl-2H-isothiazol-3-one (OIT) (26530-20-1) Dimethyloctadecyl [3-(trimethoxysilyl)propyl]ammonium chloride (27668-52-6) Antivirus, Antibacterial, Antimold Use this product in line with the instruction manual indications and for the intended purpose only. Do not put into mouth. Keep away from children.

Wi-Fi INTERFACE SETTING UP (VGK type only)

This Wi-Fi interface communicates the status information and controls the commands from the MELCloud by connecting to the indoor unit.

  1. Open the front panel and remove the Wi-Fi interface.
  2. Set up a connection between the Wi-Fi interface and the Router. Refer to the SETUP MANUAL and SETUP QUICK REFERENCE GUIDE provided with the unit.
  3. For SETUP MANUAL, please go to the website below: http://www.melcloud.com/Support
  4. Put the Wi-Fi interface back and close the front panel after the setup is completed.
  5. For MELCloud User Manual, please go to the website below: http://www.melcloud.com/Support

Wi-Fi interface introduction

No. Item Description
1 MODE switch It selects modes.
2 RESET switch It resets the system and ALL settings.
3 ERR LED (Orange) It shows the network error state.
4 NET LED (Green) It shows the network state.
5 MODE LED (Orange) It shows the Access point mode state.
6 UNIT LED (Green) It shows the indoor unit state.

Notes:

(1) MODE switch: The MODE switch is used for selecting modes in configurations.

(2) RESET switch: Hold down the RESET switch for 2 seconds to reboot the system. Hold down the RESET switch for 14 seconds to initialize the Wi-Fi interface to the factory default.

When the Wi-Fi interface is reset to the factory default, ALL the configuration information will be lost. Take great care in implementing this operation.

Mitsubishi Electric's Wi-Fi interface is designed for communication to Mitsubishi Electric's MELCloud Wi-Fi service. Third party Wi-Fi interfaces cannot be connected to MELCloud. Mitsubishi Electric is not responsible for any (i) underperformance of a system or any product; (ii) system or product fault; or (iii) loss or damage to any system or product; which is caused by or arises from connection to and/or use of any third party Wi-Fi interface or any third party Wi-Fi service with Mitsubishi Electric equipment.

For the latest information regarding MELCloud from Mitsubishi Electric Corporation, please visit www.melcloud.com.

When You Think That Trouble Has Occurred

Even if these items are checked, when the unit does not recover from the trouble, stop using the air conditioner and consult your dealer.

Indoor Unit

Symptom Explanation & Check points
The unit cannot be operated. Is the breaker turned on?
Is the power supply plug connected?
Is the ON timer set? (See page 9)
Are the horizontal vane and the vertical vane installed correctly?
Is the fan guard deformed?
The horizontal vane does not move. When the breaker is turned on, the horizontal vanes' position will be reset in about a minute. After the reset has completed, the normal horizontal vanes' operation resumes. The same is true in the emergency cooling operation.
The unit cannot be operated for about 3 minutes when restarted. This protects the unit according to instructions from the microprocessor. Please wait.
Mist is discharged from the air outlet of the indoor unit. The cool air from the unit rapidly cools moisture in the air inside the room, and it turns into mist.
The swing operation of the HORIZONTAL VANE is suspended for a while, then restarted. This is for the swing operation of the HORIZONTAL VANE to be performed normally.
When SWING is selected in COOL/DRY/FAN mode, the lower horizontal vane does not move. It is normal that the lower horizontal vane does not move when SWING is selected in COOL/DRY/FAN mode.
The airflow direction changes during operation. When the unit is operated in COOL or DRY mode, if the operation continues with air blowing down for 0.5 to 1 hour, the direction of the airflow is automatically set to upward position to prevent water from condensing and dripping. In the heating operation, if the airflow temperature is too low or when defrosting is being done, the horizontal vane is automatically set to horizontal position.
The direction of the horizontal vane cannot be adjusted with the remote controller. Outdoor unit is in defrost. Since this is completed in max. 10 minutes, please wait. (When the outside temperature is too low and humidity is too high, frost is formed.)
The operation stops for about 10 minutes in the heating operation. These models are equipped with an auto restart function. When the main power is turned off without stopping the unit with the remote controller and is turned on again, the unit starts operation automatically in the same mode as the one set with the remote controller just before the shutoff of the main power. Refer to "Auto restart function". (See page 11)
The unit starts operation by itself when the main power is turned on, but hasn't received sign from the remote controller. Perform one of the following: Turn off and on the breaker. Make sure the horizontal vanes move to the correct "close position". Start and stop the emergency cooling operation and make sure the horizontal vanes move to the correct "close position".
The two horizontal vanes touch each other. The horizontal vanes are in an abnormal position. The horizontal vanes do not return to the correct "close position". When the room temperature deviates from the set temperature, the indoor fan starts running according to the settings on the remote controller.
In COOL/DRY mode, when the room temperature reaches near the set temperature, the outdoor unit stops, then the indoor unit operates at low speed. Although plastic turns yellow due to the influence of some factors such as ultraviolet light and temperature, this has no effect on the product functions.
The indoor unit discolors over time. Is the NIGHT MODE operation set? (See page 9)
The operation indicator lamp is dim. The unit does not beep. A small amount of refrigerant continues to flow into the indoor unit even though it is not operating.
Multi system: The indoor unit which is not operating becomes warm and a sound, similar to water flowing, is heard from the unit. When operation is started during defrosting of outdoor unit is done, it takes a few minutes (max. 10 minutes) to blow out warm air.
When heating operation is selected, operation does not start right away. When the outside temperature is low during cooling operation, the fan operates intermittently to maintain sufficient cooling capacity.

Outdoor Unit

Symptom Explanation & Check points
The fan of the outdoor unit does not rotate even though the compressor is running. Even if the fan starts to rotate, it stops soon. During COOL and DRY operations, pipe or pipe connecting sections are cooled and this causes water to condense. In the heating operation, water condensed on the heat exchanger drips down. In the heating operation, the defrosting operation makes ice forming on the outdoor unit melt and drip down. In the heating operation, vapor generated by the defrosting operation looks like white smoke.
Water leaks from the outdoor unit. During COOL and DRY operations, pipe or pipe connecting sections are cooled and this causes water to condense. In the heating operation, water condensed on the heat exchanger drips down. In the heating operation, the defrosting operation makes ice forming on the outdoor unit melt and drip down. In the heating operation, vapor generated by the defrosting operation looks like white smoke.
White smoke is discharged from the outdoor unit. In the heating operation, vapor generated by the defrosting operation looks like white smoke.

Remote controller

Symptom Explanation & Check points
The display on the remote controller does not appear or it is dim. The indoor unit does not respond to the remote control signal. Are the batteries exhausted? (See page 5)
Is the polarity (+, -) of the batteries correct? (See page 5)
Are any buttons on the remote controller of other electric appliances being pressed?
Does not cool or heat Is the temperature setting appropriate? (See page 6)
The room cannot be cooled or heated sufficiently. Is the fan setting appropriate? Please change fan speed to High or Super High. (See page 7)
The room cannot be cooled sufficiently. Are the filters clean? (See page 12)
Is the fan or heat exchanger of the indoor unit clean? (See page 12)
Are there any obstacles blocking the air inlet or outlet of the indoor or outdoor unit?
Is a window or door open?
The room cannot be heated sufficiently. It may take a certain time to reach the setting temperature or may not reach that depending on the size of the room, the ambient temperature, and the like.
Air does not blow out soon in the heating operation. Please wait as the unit is preparing to blow out warm air.
Airflow: The air from the indoor unit smells strange. Are the filters clean? (See page 12)
Is the fan or heat exchanger of the indoor unit clean? (See page 12)
The unit may suck in an odor adhering to the wall, carpet, furniture, cloth, etc. and blow it out with the air.
Sound: Cracking sound is heard. This sound is generated by the expansion/contraction of the front panel, etc. due to change in temperature.
"Burbling" sound is heard. This sound is heard when the outside air is absorbed from the drain hose by turning on the range hood or the ventilation fan, making water flowing in the drain hose to spout out. This sound is also heard when the outside air blows into the drain hose in case the outside wind is strong.
Mechanical sound is heard from the indoor unit. This is the switching sound in turning on/off the fan or the compressor.
The sound of water flowing is heard. This is the sound of refrigerant or condensed water flowing in the unit.
Hissing sound is sometimes heard. This is the sound when the flow of refrigerant inside the unit is changed.
Timer: Weekly timer does not operate according to settings. Is the ON/OFF timer set? (See page 9)
Transmit the setting information of the weekly timer to the indoor unit again. When the information is successfully received, a long beep will sound from the indoor unit. If information fails to be received, 3 short beeps will be heard. Ensure information is successfully received. (See page 10)
The unit starts/stops the operation by itself. When a power failure occurs and the main power turns off, the indoor unit built-in clock will be incorrect. As a result, the weekly timer may not work normally.
Be sure to place the remote controller where the signal can be received by the indoor unit. (See page 5)
Is the weekly timer set? (See page 10)

Wi-Fi interface

Symptom Explanation & Check points
When error occurs during connection setup or operation. Refer to the SETUP MANUAL.
For SETUP MANUAL, please go to the website below: http://www.melcloud.com/Support

In the following cases, stop using the air conditioner and consult your dealer.

When the Air Conditioner Is Not Going to Be Used for a Long Time

  1. Operate by COOL mode with the highest temperature set or FAN mode for 3 to 4 hours. (See page 6) This dries the inside of the unit.
    • Moisture in the air conditioner contributes to favorable conditions for growth of fungi, such as mold.
  2. Press OFF/ON to stop the operation.
  3. Turn off the breaker and/or disconnect the power supply plug.
  4. Remove all batteries from the remote controller.

When using the air conditioner again:

  1. Clean the air filter. (See page 12)
  2. Check that the air inlet and outlet of the indoor and outdoor units are not blocked.
  3. Check that the earth is connected correctly.
  4. Refer to the "PREPARATION BEFORE OPERATION", and follow the instructions. (See page 5)

INSTALLATION PLACE AND ELECTRICAL WORK

Installation place

Avoid installing the air conditioner in the following places.

The mounting height of indoor unit 1.8 m to 2.3 m is recommended. If it is impossible, please consult your dealer.

Do not operate the air conditioner during interior construction and finishing work, or while waxing the floor. Before operating the air conditioner, ventilate the room well after such work is performed. Otherwise, it may cause volatile elements to adhere inside the air conditioner, resulting in water leakage or scattering of dew.

For Wi-Fi interface

To prevent the effects of a fluorescent lamp, keep as far apart as possible. (1 m or more)

Inverter-type fluorescent lamp

Keep a space to prevent the picture distortion or the noise.

The installation location of the outdoor unit should be at least 3 m away from the antennas for TV sets, radios, etc. In areas where the reception is weak, provide greater space between the outdoor unit and the antenna of the affected device if operation of the air conditioner interferes with radio or TV reception.

For the optimum efficiency and to extend the life time of using, the outdoor unit should be installed in a well-ventilated dry place.

100 mm or more

wall, etc.

1 m or more

Cordless TV phone or Portable phone Radio

3 m or more

200 mm or more

Electrical work

Provide an exclusive circuit for the power supply of the air conditioner. Be sure to observe the breaker capacity.

If you have any questions, consult your dealer.

SPECIFICATIONS

Model Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor
MSZ-AP25VG(K) MUZ-AP25VG(H) MSZ-AP35VG(K) MUZ-AP35VG(H) MSZ-AP42VG(K) MUZ-AP42VG(H) MSZ-AP50VG(K) MUZ-AP50VG(H)
Function Cooling Heating Cooling Heating Cooling Heating Cooling Heating
Power supply ~/N, 230 V, 50 Hz
Capacity kW 2.5 3.2 3.5 4.0 4.2 5.0 5.4 5.8
Input kW 0.60 0.78 0.99 1.03 1.30 1.49 1.55 1.60
Weight Indoor kg 10.5 - 10.5 - 11.5 - 12.5 -
Outdoor kg 27 or 30 *1 - 35 - 38 - 40 -
Refrigerant filling capacity (R32) kg 0.55 - 0.55 - 0.70 - 1.00 -
IP code Indoor IP 20 - IP 20 - IP 20 - IP 20 -
Outdoor IP 24 - IP 24 - IP 24 - IP 24 -
Permissible excessive operating pressure LP ps MPa 2.77 - 2.77 - 2.77 - 2.77 -
HP ps MPa 4.17 - 4.17 - 4.17 - 4.17 -
Noise level (SPL) Indoor (Super High/ High/Med./Low/Silent) dB(A) 42/36/30/ 24/19 - 45/39/34/ 29/21 - 45/38/31/ 29/21 - 48/43/38/ 33/28 -
Outdoor dB(A) 47 48 49 50 50 51 52 52

* Refer to the spec name plate for the unit weight.

Guaranteed operating range

Indoor Outdoor Note:
MUZ-AP25/35/42/50VG MUZ-AP25/35/42/50VGH Rating condition
Cooling Upper limit 32°C DB 35°C DB Cooling - Indoor: 27°C DB, 19°C WB
Outdoor: 32°C DB, 23°C WB
Lower limit 23°C WB 21°C DB -10°C DB
Heating Upper limit 27°C DB 24°C DB Heating - Indoor: 20°C DB, 15°C WB
Outdoor: 27°C DB, 24°C DB
Lower limit 20°C DB -15°C DB -20°C DB

DB: Dry Bulb

WB: Wet Bulb

Wi-Fi interface

Model MAC-5661FB-E MAC-577IF2-E
Input Voltage DC12.7 V (from indoor unit)
Power consumption MAX. 2 W
Size H×W×D (mm) 79×44×18.5 73.5×41.5×18.5
Weight (g) (including cable) 60 46
Transmitter power level (MAX.) 17.5 dBm @IEEE 802.11b 20 dBm @IEEE 802.11b
RF channel 1ch~13ch (2412~2472 MHz)
Radio protocol IEEE 802.11b/g/n (20)
Encryption AES
Authentication WPA2-PSK
Software Version XX.00

For Declaration of Conformity, please go to the website below: http://www.mitsubishielectric.com/ldg/ibim/

Wi-Fi interface setting information

MEMO

Indoor unit model name:

Indoor unit serial number:

Outdoor unit model name:

Outdoor unit serial number:

Wi-Fi interface MAC address (MAC):

Wi-Fi interface serial number (ID):

Wi-Fi interface PIN (PIN):

Wi-Fi interface SSID (SSID):

Wi-Fi interface KEY (KEY):

System commissioning date:

Wi-Fi interface installation date:

Installer contact details

Name:

Telephone number:

Name of Importer:

Mitsubishi Electric Europe B.V.
Capronilaan 46, 1119 NS, Schiphol Rijk, The Netherlands

French Branch
2, Rue De L'Union, 92565 RUEIL MAISON Cedex

German Branch
Mitsubishi-Electric-Platz 1 40882 Ratingen North Rhine-Westphalia Germany

Belgian Branch
8210 Loppem, Autobaan 2, Belgium

Irish Branch
Westgate Business Park, Ballymount Road, Upper Ballymount, Dublin 24, Ireland

Italian Branch
Palazzo Sirio Ingresso 1, Viale Colleoni, 7, 20864 Agrate Brianza (MI), Italy

Norwegian Branch
Gneisveien 2D, 1914 Ytre Enebakk, Norway

Portuguese Branch
Avda. do Forte 10, 2794-019 Carnaxide, Lisbon, Portugal

Spanish Branch
Av. Castilla, 2 Parque Empresarial San Fernando - Ed. Europa, 28830 San Fernando de Henares (Madrid), Spain

Scandinavian Branch
Hammarbacken 14, P.O. Box 750, SE-19127, Sollentuna, Sweden

UK Branch
Travellers Lane, Hatfield, Hertfordshire, AL10 8XB. England, UK

Polish Branch
Krakowska 48, PL-32-083 Balice, Poland

MITSUBISHI ELECTRIC TURKEY ELEKTRİK ÜRÜNLERİ A.Ş
Şerifali Mahallesi Kale Sokak No: 41 34775 Ümraniye, İstanbul, Turkey

UK DECLARATION OF CONFORMITY

MITSUBISHI ELECTRIC AIR CONDITIONING SYSTEMS MANUFACTURING TURKEY JOINT STOCK COMPANY.
Manisa OSB 4.Kisim Kecilikoyosb Mah.
Ahmet Nazif Zorlu Bulvari No:19 Yunusemre - Manisa.

hereby declares under its sole responsibility that the air conditioners and heat pumps described below for use in residential, commercial and light-industrial environments:

MITSUBISHI ELECTRIC, MSZ-AP25VG/MUZ-AP25VG, MSZ-AP25VG/MUZ-AP25VGH
MSZ-AP35VG/MUZ-AP35VG, MSZ-AP35VG/MUZ-AP35VGH
MSZ-AP42VG/MUZ-AP42VG, MSZ-AP42VG/MUZ-AP42VGH
MSZ-AP50VG/MUZ-AP50VG, MSZ-AP50VG/MUZ-AP50VGH

Note: Its serial number is on the nameplate of the product.

Legislation

Issued: TURKEY 7 January, 2021 Selin Dömekeli Manager, Quality Assurance Department

UK DECLARATION OF CONFORMITY

MITSUBISHI ELECTRIC AIR CONDITIONING SYSTEMS MANUFACTURING TURKEY JOINT STOCK COMPANY.
Manisa OSB 4.Kisim Kecilikoyosb Mah.
Ahmet Nazif Zorlu Bulvari No:19 Yunusemre - Manisa.

hereby declares under its sole responsibility that the air conditioners and heat pumps described below for use in residential, commercial and light-industrial environments:

MITSUBISHI ELECTRIC, MSZ-AP25VGK/MUZ-AP25VG, MSZ-AP25VGK/MUZ-AP25VGH
MSZ-AP35VGK/MUZ-AP35VG, MSZ-AP35VGK/MUZ-AP35VGH
MSZ-AP42VGK/MUZ-AP42VG, MSZ-AP42VGK/MUZ-AP42VGH
MSZ-AP50VGK/MUZ-AP50VG, MSZ-AP50VGK/MUZ-AP50VGH

Note: Its serial number is on the nameplate of the product.

Legislation

Issued: TURKEY 7 January, 2021 Selin Dömekeli Manager, Quality Assurance Department

EC DECLARATION OF CONFORMITY

MITSUBISHI ELECTRIC AIR CONDITIONING SYSTEMS MANUFACTURING TURKEY JOINT STOCK COMPANY.
Manisa OSB 4.Kisim Kecilikoyosb Mah.
Ahmet Nazif Zorlu Bulvari No:19 Yunusemre - Manisa.

hereby declares under its sole responsibility that the air conditioners and heat pumps described below for use in residential, commercial and light-industrial environments:

MITSUBISHI ELECTRIC, MSZ-AP25VG/MUZ-AP25VG, MSZ-AP25VG/MUZ-AP25VGH
MSZ-AP35VG/MUZ-AP35VG, MSZ-AP35VG/MUZ-AP35VGH
MSZ-AP42VG/MUZ-AP42VG, MSZ-AP42VG/MUZ-AP42VGH
MSZ-AP50VG/MUZ-AP50VG, MSZ-AP50VG/MUZ-AP50VGH

Note: Its serial number is on the nameplate of the product.

Directives

Issued: TURKEY 1 November, 2017 Selin Dömekeli Quality Assurance Department

EC DECLARATION OF CONFORMITY

MITSUBISHI ELECTRIC AIR CONDITIONING SYSTEMS MANUFACTURING TURKEY JOINT STOCK COMPANY.
Manisa OSB 4.Kisim Kecilikoyosb Mah.
Ahmet Nazif Zorlu Bulvari No:19 Yunusemre - Manisa.

hereby declares under its sole responsibility that the air conditioners and heat pumps described below for use in residential, commercial and light-industrial environments:

MITSUBISHI ELECTRIC, MSZ-AP25VGK/MUZ-AP25VG, MSZ-AP25VGK/MUZ-AP25VGH
MSZ-AP35VGK/MUZ-AP35VG, MSZ-AP35VGK/MUZ-AP35VGH
MSZ-AP42VGK/MUZ-AP42VG, MSZ-AP42VGK/MUZ-AP42VGH
MSZ-AP50VGK/MUZ-AP50VG, MSZ-AP50VGK/MUZ-AP50VGH

Note: Its serial number is on the nameplate of the product.

Directives

Issued: TURKEY 1 November, 2017 Selin Dömekeli Quality Assurance Department

MITSUBISHI ELECTRIC CORPORATION
HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

Models: MSZ-AP25VG, MSZ-AP35VG, MSZ-AP42VG, MSZ-AP50VG, MSZ-AP25VG Series Split Type Air Conditioners, MSZ-AP25VG Series, Split Type Air Conditioners, Type Air Conditioners, Air Conditioners, Conditioners

File Info : application/pdf, 22 Pages, 2.84MB

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OPERATING-MANUAL-MSZ-AP-25-35-42-50

References

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