MITSUBISHI ELECTRIC MS-GA80VB (01) PDF DOCUMENT

WARNING:

• Do not use an intermediate connection of the power supply cord or an extension cord, and do not connect many devices to one AC outlet to prevent fire or electric shock.

• Ensure the power supply plug is free of dirt and inserted securely into the outlet.

• Do not scratch, process, or put heavy objects on the power supply cord. A damaged cord can cause a fire or electric shock.

• Do not turn the breaker off/on or disconnect/connect the power supply plug during operation. Always switch the unit off with the remote controller first.

• Do not expose your skin directly to cool air for a long time as this could damage your health.

• Do not insert your finger, a stick, or other objects into the air inlet/outlet, as the fan rotates at high speed and may cause injury.

• If you notice an abnormality such as a burning smell, stop the air conditioner, disconnect the power supply plug, and/or turn off the breaker. Consult your dealer.

CAUTION:

• When cleaning, do not touch the metal parts of the indoor unit to avoid injury.

• Do not touch the air inlet or aluminum fins of the outdoor unit.

• Do not use insecticides or flammable sprays on the unit.

• Do not place pets or houseplants in the path of direct airflow.

• Do not place other electrical appliances or furniture under the indoor/outdoor unit, as dripping water may cause damage.

• Do not operate the MITSUBISHI ELECTRIC MS-GA80VB for long periods in high humidity (80% RH or more) with a door or window open, as condensed water may drip and damage furniture.

• Do not operate switches with wet hands to avoid electric shock.

• Do not clean the air conditioner with water.

• Do not step on or place anything on the indoor/outdoor unit.

Installation, repairs, or relocation of the MITSUBISHI ELECTRIC MS-GA80VB air conditioner should not be done by the customer. These tasks require special techniques and work. If done incorrectly, it may cause a fire, an electric shock, injury from the unit falling, or water leakage. Please consult your dealer or a qualified contractor.

The air conditioner should not be installed where flammable gas could leak. If gas leaks and collects around the unit, it may cause an explosion.

Power Supply:

Insert the power supply plug into the power outlet and/or turn the breaker on. Remove any dirt from the power supply plug and insert it securely to prevent fire or electric shock.

Set up the Remote Controller:

1. Remove the front lid of the remote and insert two new AAA alkaline batteries. Insert the minus pole first and check for correct polarity.

2. Press the RESET button with a thin stick. If this is not pressed, the remote may not operate correctly.

3. Press the CLOCK set button with a thin stick.

4. Press the HR. and MIN. buttons to set the current time. Each press of the HR. button increases the time by 1 hour, and each press of the MIN. button increases it by 1 minute.

5. Press the CLOCK set button again and close the front lid.

If the remote controller’s batteries run out or it malfunctions, you can use the EMERGENCY OPERATION switch located on the indoor unit (behind the front panel).

1. Press the EMERGENCY OPERATION switch. The unit will first operate in a test run for 30 minutes, then shift to EMERGENCY COOL MODE.

2. To stop the operation, press the EMERGENCY OPERATION switch again. Each press of the switch alternates between EMERGENCY COOL MODE and STOP MODE.

The details of EMERGENCY COOL MODE are as follows:

Note: Temperature control does not work during the 30-minute test run, and the fan speed is set to High, shifting to Medium after 30 minutes. The operation mode is indicated by the Operation Indicator lamp on the indoor unit.

The “(I FEEL…)” auto operation mode automatically sets the optimum room condition.

To start operation: Press the ON/OFF button. The air conditioner will automatically control the temperature.

To stop operation: Press the ON/OFF button again.

Temperature Adjustment:

• If you feel slightly warm: Press the ▼ button to lower the temperature by about 1°C.

• If you feel slightly cool: Press the ▲ button to raise the temperature by about 1°C.

When the MITSUBISHI ELECTRIC MS-GA80VB starts in AUTO mode, it selects an operation mode based on the room temperature:

1. Press the ON/OFF button to start the unit.

2. Press the MODE button to select your desired operation mode. For the MITSUBISHI ELECTRIC MS-GA80VB (COOL ONLY model), each press cycles through the modes in this sequence: (I FEEL…) → (COOL) → (DRY) → (FAN).

To stop operation: Press the ON/OFF button.

To change the set temperature (in COOL mode):

• Press the ▼ button to lower the temperature (by about 1°C per press).

• Press the ▲ button to raise the temperature (by about 1°C per press).

Note: In DRY operation, the temperature cannot be set, and the room temperature will be slightly lowered.

To change Air Flow Velocity (Fan Speed):

Press the FAN button. Each press changes the fan speed in the sequence: (Low) → (Med.) → (High) → (AUTO).

To change Vertical Air Flow Direction (Horizontal Vane):

Press the VANE button. Each press changes the angle of the horizontal vane through 5 positions, followed by SWING and then AUTO modes.

To change Horizontal Air Flow Direction (Vertical Vane):

Press the WIDE VANE button. Each press changes the angle of the vertical vanes, followed by a SWING mode.

SWING OPERATION: Use the swing operation (for either vertical or horizontal vanes) for the air flow to reach all corners of the room.

Note: Do not move the vanes manually as it may cause trouble. In cooling or dry mode, if the horizontal vane is set to a low position (4 or 5) for 1 hour, it will automatically move to a horizontal position to prevent condensation from dripping.

LONG OPERATION:

Use this operation to make the air flow reach a long distance. While the unit is operating, press the LONG button. The fan speed increases, and the horizontal vane moves to the LONG mode position. To release this mode, press the LONG button again.

ECONO COOL OPERATION:

This feature allows comfortable cooling with energy savings. While operating in MANUAL COOL mode, press the ECONO COOL button. The unit will perform a swing operation, and the set temperature is automatically set 2°C higher than the standard COOL mode setting. The swinging air flow makes you feel cooler, saving energy. To release this mode, press the ECONO COOL button again.

Note: The current time must be set on the remote for the timer to work.

How to set the ON timer:

1. While the unit is off, press the START (On-timer) button. The ON timer mode will be activated.

2. Use the HR. and MIN. buttons to set the desired ON time. The HR. button increases the time by 1 hour, and the MIN. button increases it by 10 minutes.

3. To release the ON timer, press the START button again.

How to set the OFF timer:

1. While the unit is running, press the STOP (Off-timer) button. The OFF timer mode will be activated.

2. Use the HR. and MIN. buttons to set the desired OFF time.

3. To release the OFF timer, press the STOP button again.

You can use the ON and OFF timers in combination. The timer for the time that is reached first will operate first.

1. Operate the unit in FAN mode for 3 to 4 hours to dry the inside of the air conditioner. To do this, select the FAN mode from the remote controller.

2. Turn off the breaker and/or disconnect the power supply plug. This prevents dirt collection and potential fire hazards.

3. Remove the batteries from the remote controller to prevent liquid leakage.

1. Clean the air filter and install it in the indoor unit.

2. Check that the air inlet and outlet of both the indoor and outdoor units are not blocked by any obstacles.

3. Check that the earth is connected correctly. Do not connect the earth to a gas pipe, water pipe, lightning rod, or telephone earth.

Clean the air filter about once every 2 weeks.

1. Before cleaning, turn off the power. Open the front panel and remove the air filter.

2. Remove dirt from the filter using a vacuum cleaner, or by washing it with water. If the dirt is noticeable, wash with a solution of mild detergent diluted in lukewarm water. Do not use hot water (50°C or more).

3. After washing, dry the filter well in the shade. Do not expose it to direct sunlight or heat from a fire.

4. Install the air filter back into the unit and close the front panel.

The air cleaning filter (optional part, MAC-1700FT) should be replaced about every 4 months, or when the unit’s capacity is lowered due to dirt. If the color of the filter turns to dark brown, replace it at once.

1. Remove the standard air filter.

2. Remove the old air cleaning filter (White bellows type).

3. Install a new air cleaning filter.

4. Install the standard air filter back and securely close the front panel.

Please check the following points:

• Is the breaker turned on?

• Is the fuse blown?

• Is the ON timer set?

Please check the following:

• Is the temperature setting correct?

• Is the filter clean?

• Are there any obstacles blocking the air inlet or outlet of the indoor or outdoor unit?

• Is a window or door open?

Also, if a ventilation fan or gas cooker is used in the room, the cooling load increases, which can result in insufficient cooling. When the outside air temperature is high, the cooling effect may also not be sufficient.

First, check if the air filter is clean.

The air conditioner may also suck in an odor adhering to the wall, carpet, furniture, or cloth, and then blow it out with the air.

Please check these points:

• Are the batteries exhausted? If so, replace them.

• Is the polarity (+, -) of the batteries correct?

• Are any buttons on the remote controller of other electric appliances being pressed nearby?

This is a normal protective function of the MITSUBISHI ELECTRIC MS-GA80VB. A microprocessor is preventing the unit from restarting immediately to protect its internal components. Please wait.

No, this is not a malfunction. This sound is generated by the expansion and contraction of the front panel and other plastic parts due to changes in temperature.

In DRY operation, the MITSUBISHI ELECTRIC MS-GA80VB unit cycles the compressor and indoor fan on and off to reduce humidity without significantly decreasing the room temperature. The fan stopping is part of this normal cycle and prevents water condensed on the heat exchanger from re-evaporating into the room.

These sounds are normal:

• A water flowing sound can be the refrigerant flowing inside the air conditioner or condensed water flowing in the heat exchanger.

• A burbling sound can be heard when outside air is drawn in through the drain hose (for example, by a kitchen range hood) or when strong wind blows into the drain hose.

This is not a malfunction. The cool air from the air conditioner rapidly cools the moisture in the room’s air, causing it to condense and turn into a visible mist.

This is a protective feature. When the MITSUBISHI ELECTRIC MS-GA80VB is operated in COOL or DRY mode with the air blowing downwards for 1 hour, the direction of the horizontal vane is automatically set to a more horizontal position. This is to prevent condensed water from dripping from the unit. You can readjust it with the remote controller.

During COOL and DRY operations, the pipes and connecting sections of the outdoor unit become cold, which causes condensation (water) to form and drip. This is normal behavior.

Your MITSUBISHI ELECTRIC MS-GA80VB is equipped with an auto restart function. If the main power was turned off while the unit was operating, it will automatically restart in the same mode when power is restored. If you had turned the unit off with the remote controller before the power cut, it will remain off when power is restored.

Even if you have checked the troubleshooting guide, stop using the air conditioner and consult your dealer in the following cases:

• When water leaks or drops from the indoor unit.

• When the left operation indicator lamp blinks.

• When the breaker trips frequently.

• The remote control signal cannot be received in a room with an electronic ON/OFF type fluorescent lamp (e.g., inverter-type).

• Operation of the air conditioner interferes with radio or TV reception.

• When thunder is heard, stop operation and disconnect the power supply plug or turn off the breaker to prevent damage to electrical parts.

(DB: Dry Bulb, WB: Wet Bulb)