Mitsubishi MSZ-GL12NA Manual. Remote control, Specs etc.

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

Incorrect handling could cause serious hazard depending on the conditions.

Meanings of symbols used in this manual

: Be sure not to do.
: Be sure to follow the instruction.
: Never insert your finger or stick, etc.
: Never step onto the indoor/outdoor unit and do not put anything on them.
: Danger of electric shock. Be careful.
: Be sure to disconnect the power supply plug from the power outlet.
: Be sure to shut off the power.

	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. In this case, consult your dealer. If a repair involves recharging the unit with refrigerant, ask the service technician for details. • The refrigerant used in the air conditioner is safe. Normally, it does not leak. However, if refrigerant leaks and comes in contact with a heat source such as a fan heater, kerosene heater, or cooking stove, it will create a harmful gas.
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.
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.

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.

For installation

	Consult your dealer for installing the air conditioner. • It should not be installed by the user since installation requires specialized knowledge and skills. An improperly installed air conditioner may cause water leakage, fire, or electric shock.
	Provide a dedicated power supply for the air conditioner. • A non-dedicated power supply may cause overheating or fire.
	Do not install the unit where flammable gas could leak. • If gas leaks and accumulates around the unit, it may cause an explosion.
Ground the unit correctly. • Do not connect the ground wire to a gas pipe, water pipe, lightning rod, or a telephone ground wire. Improper grounding may cause electric shock.

In case of an abnormal condition
Immediately stop operating the air conditioner and consult your dealer.

NAME OF EACH PART

Indoor unit

1. Front panel
2. Air filter (Nano platinum filter)
3. Air cleaning filter (Anti-Allergy Enzyme Filter)
4. Air inlet
5. Air outlet
6. Horizontal vane
7. Heat exchanger
8. Remote control receiving section
   
   Operation indicator lamp
   
   Emergency operation switch
   

Outdoor unit

1. Air inlet (back and side)
2. Refrigerant piping
3. Drainage hose
4. Air outlet
5. Drain outlet

Outdoor units may be different in appearance.

Remote controller

1. Signal transmitting section
   Distance of signal: About 20 ft. (6 m) Beep(s) is (are) heard from the indoor unit when the signal is received.
2. Operation display section
3. Battery replacement indicator
4. OFF/ON (stop/operate) button
5. FAN speed control button
6. Operation select button
7. ECONO COOL button
8. VANE control button
9. Temperature buttons
10. Off-timer button
11. On-timer button
12. SMART SET button
13. TIME set buttons
    forward button backward button
14. CLOCK button
15. RESET button
16. Lid
    Slide down to open

Remote controller holder

• Install the remote controller holder in a place where the signal can be received by the indoor unit.

Only use the remote controller provided with the unit.
Do not use other remote controllers.
If two or more indoor units are installed in proximity to one another, an indoor unit that is not intended to be operated may respond to the remote controller.

PREPARATION BEFORE OPERATION

Before operation: Insert the power supply plug into the power outlet and/or turn the breaker on.

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.
4. Press RESET.

• Make sure the polarity of the batteries is correct.
• Do not use manganese batteries and leaking batteries. The remote controller could malfunction.
• Do not use rechargeable batteries.
• The battery replacement indicator lights up when the battery is running low. In about 7 days after the indicator starts lights up, the remote controller stops working.
• Replace all batteries with new ones of the same type.
• Batteries can be used for approximately 1 year. However, batteries with expired shelf lives last shorter.
• Press RESET gently using a thin instrument.
  If the RESET button is not pressed, the remote controller may not operate correctly.

Setting current time

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

• 
  Press CLOCK gently using a thin instrument.

Changing temperature units (°F→°C)

Unit is preset with °F.

Press RESET while the temperature buttons are pressed.

• Press RESET gently using a thin instrument.
• To change temperature unit from °C to °F, press RESET.

SELECTING OPERATION MODES

1. Press to start the operation.
2. Press to select operation mode. Each press changes mode in the following order:
   
3. Press or to set the temperature.
   Each press raises or lowers the temperature by 1°F (1°C).
4. Press to stop the operation.
   • The same setting is selected the next time by simply pressing .

Operation indicator lamp

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

Indication	Operation state	Room temperature
	The unit is operating to reach the set temperature	About 4°F (2°C) or more away from set temperature
	The room temperature is approaching the set temperature	About 2 to 4°F (1 to 2°C) from set temperature
	Standby mode (only during multi system operation)	—

Lighted Blinking Not lighted

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

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 4°F (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 14°F [-10°C]). Water condensed in the unit may drip and wet or damage furniture, etc.

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.

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

Set temperature: 75°F (24°C)
Fan speed: Medium
Horizontal vane: Auto

Note:
The first 30 minutes of operation is test run. Temperature control does not work, and fan speed is set to High.

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.

FAN SPEED AND AIRFLOW DIRECTION ADJUSTMENT

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

• Two short beeps are heard from the indoor unit when set to AUTO.
• Use higher fan speed to cool/heat the room quicker. It is recommended to lower the fan speed once the room is cool/warm.
• Use lower fan speed for quiet operation.

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

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

• Two short beeps are heard from the indoor unit when set to AUTO.

Airflow direction

(AUTO). The vane is set to the most efficient airflow direction. COOL/DRY:horizontal position. HEAT:position (5).
(Manual). For efficient air conditioning, select the upper position for COOL/DRY, and the lower position for HEAT. If the position (4) or (5) is selected during COOL/DRY, the vane automatically moves to the upward position after 0.5 to 1 hour to prevent any condensation from dripping.
(Swing). The vane moves up and down intermittently.

To change the horizontal airflow direction.

Move the vertical vane manually before starting operation.

SMART SET OPERATION

1. Press during COOL, ECONO COOL, or HEAT mode to select SMART SET mode.
2. Set the temperature, fan speed, and airflow direction.
   • The same setting is selected from the next time by simply pressing .
   • 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.
   • Normally, the minimum temperature setting in HEAT mode is 59°F (16°C). However, during SMART SET operation only, the minimum temperature setting is 50°F (10°C).
3. Press again to cancel SMART SET operation.
   • SMART SET operation also is cancelled when the MODE button is pressed.

SMART SET operation

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

Example of use:

1. Low energy mode
   Set the temperature 4°F (2°C) to 6°F (3°C) warmer in COOL and cooler in HEAT mode. This setting is suitable for unoccupied room, and while you are sleeping.
2. Saving frequently used settings
   Save your preferred setting for COOL/ECONO COOL and HEAT. This enables you to select your preferred setting with a single push of the button.

ECONO COOL OPERATION

1. Press during COOL mode to start ECONO COOL operation.
   The unit performs swing operation vertically in various cycles according to the temperature of airflow. Set temperature is set 4°F (2°C) higher automatically.
2. Press again to cancel ECONO COOL operation.
   • ECONO COOL operation is also cancelled when the VANE button is pressed.

What is "ECONO COOL"?
Swing airflow (change of airflow) makes you feel cooler than stationary airflow. So, even though the set temperature is automatically set at 4°F (2°C) higher, it is possible to perform cooling operation with keeping comfort. As a result, energy can be saved.

TIMER OPERATION (ON/OFF TIMER)

1. Press or during operation to set the timer.
   (ON timer): The unit turns ON at the set time.
   (OFF timer): The unit turns OFF at the set time.
   *orblinks.
   * Make sure that the current time is set correctly.
2. Press (forward) and (backward) to set the time of timer.
   Each press changes the set time 10 minutes forward/backward.
   • Set the timer while oris blinking.
3. Press or again to cancel timer.

Note:

• ON and OFF timers can be set together. mark indicates the order of timer operations.
• If power failure occurs while ON/OFF timer is set, see "Auto restart function".

CLEANING

Instructions:

• Switch off the power supply or turn off the breaker before cleaning.
• Be careful not to touch the metal parts with your hands.
• Do not use benzine, thinner, polishing powder, or insecticide.
• Use only diluted mild detergents.
• Do not expose parts to direct sunlight, heat, or fire to dry.
• Do not use water hotter than 120°F (50°C).

1. Front panel
2. Air filter (Nano platinum filter)
3. Air cleaning filter (Anti-Allergy Enzyme Filter)

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.
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.
   

Air filter (Nano platinum filter)

• Clean every 2 weeks
• Remove dirt by a vacuum cleaner, or rinse with water.
• After washing with water, dry it well in shade.

What is "Nano platinum filter"?
Nano platinum is a ceramic particle that includes a platinum nanoparticle. The particles are incorporated into the filter material, which results in providing semipermanent antibacterial and deodorizing characteristics for the filter. Nano platinum surpasses the catechin (a bioflavonoid that is found in green tea) in performance. Nano platinum filter uses this compound not only to improve air quality but also to eliminate bacteria and viruses. This air filter has a semi-permanent lasting effect even after washing it with water.

Air cleaning filter (Anti-Allergy Enzyme Filter)

Back side of air 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.

Every year:

• Replace it with a new air cleaning filter for best performance.
• Parts Number MAC-408FT-E

Pull to remove from the air filter

• 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.

TROUBLESHOOTING

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

• Is the breaker turned on?
• Is the power supply plug connected?
• Is the ON timer set?

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

• When water leaks or drips from the indoor unit.
• When the upper operation indicator lamp blinks.
• When the breaker trips frequently.
• The remote control signal is not received in a room where an electronic ON/OFF type fluorescent lamp (inverter-type fluorescent lamp, etc.) is used.
• Operation of the air conditioner interferes with radio or TV reception. An amplifier may be required for the affected device.
• When an abnormal sound is heard.
• When any refrigerant leakage is found.

WHEN THE AIR CONDITIONER IS NOT GOING TO BE USED FOR A LONG TIME

1. Set to the highest temperature in manual COOL mode, and operate for 3 to 4 hours.
   • 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 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.
2. Check that the air inlet and outlet of the indoor and outdoor units are not blocked.
3. Check that the ground wire is connected correctly.
4. Refer to the "PREPARATION BEFORE OPERATION", and follow the instructions.

INSTALLATION PLACE AND ELECTRICAL WORK

Installation place

Avoid installing the air conditioner in the following places.

• Where there is much machine oil.
• Salty places such as the seaside.
• Where sulfide gas is generated such as hot spring, sewage, waste water.
• Where oil is splashed or where the area is filled with oily smoke (such as cooking areas and factories, in which the properties of plastic could be changed and damaged).
• Where there is high-frequency or wireless equipment.
• Where the air from the outdoor unit air outlet is blocked.
• Where the operation sound or air from the outdoor unit bothers the house next door.
• The mounting height of indoor unit 5.9 ft. to 7.5 ft. (1.8 m to 2.3 m) is recommended. If it is impossible, please consult your dealer.

The installation location of the outdoor unit should be at least 10 ft. (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.

To prevent the effects of a fluorescent lamp, keep as far apart as possible.

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

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

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

Guaranteed operating range

DB: Dry Bulb
WB: Wet Bulb

Note:

1. The guaranteed operating range value is for 1:1 System Application.
2. If the outdoor temperature is below the lower limit of guaranteed operating range, the outdoor unit may stop operation until the outdoor temperature exceeds the lower limit.

For the residents of USA

U.S. Product Warranty and Registration Information

Congratulations on the purchase of your new Mitsubishi Electric Trane HVAC US Cooling & Heating system and thank you for trusting us with your personal comfort.

Your installing contractor may have registered your products on your behalf. To check the registration status or to complete your product registration, please visit us at http://www.metahvac.com/.
Be sure to have the model and serial number for each of your indoor and outdoor units ready before starting the registration process.

If you need assistance registering your products, call or write to us at:

Mitsubishi Electric Trane HVAC US LLC
ATTN: Customer Care Center
1340 Satellite Boulevard
Suwanee, GA 30024
Phone: 1.800.433.4822
E-mail: CustomerCare@hvac.mea.com

For the residents of Canada

Mitsubishi Electric
HVAC Warranty Registration (Canada)

Congratulations on the purchase of your new Mitsubishi Electric heat pump or air conditioning system.

In order to benefit from our extended warranty, your installing contractor must register your system's products on our website on your behalf within 90 days of installation. The extended warranty covers the system's parts and compressor for an extended period from the date of installation. Product model and serial numbers are required for online registration.

To register, please ask your installing contractor to visit the warranty registration page at www.mitsubishielectricmeq.ca, complete the registration and provide you with confirmation of registration.

If you require assistance, please contact: info@mitsubishielectric.ca

MITSUBISHI ELECTRIC CORPORATION

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

Videos

How to Operate Handheld Remotes Video

Documents / Resources

References

• Mitsubishi Electric Trane US HVAC | Home

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Need Assistance?

Do you have a question about the MSZ-GL12NA that isn't answered in the manual? Leave your question here.

Thank you! Your question has been received!