MITSUBISHI ELECTRIC MSH-GA60VB (01) PDF DOCUMENT

Thank you for purchasing a MITSUBISHI ELECTRIC room air conditioner. Please follow these initial steps:

• To use this unit correctly and safely, be sure to read the operating instructions before use.

• Keep the manual carefully for later reference.

• Be sure to receive a guarantee card from your dealer and check that the purchased date and shop name, etc. are entered correctly.

• This air conditioner should not be installed by the customer. Safety and performance functions cannot be assured if installed by the customer.

The symbols used in the manual have the following meanings:

: 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.

Please observe the following warnings for safe operation:

• 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. This can cause fire or electric shock from poor contact or insulation.

• Remove dirt from the power supply plug and insert it securely into the outlet to prevent fire or electric shock.

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

• Do not turn the breaker off/on or disconnect/connect the power supply plug during operation. This can create sparks and cause a fire.

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

• Installation, repairs, or relocation should not be done by the customer. Incorrect work can cause fire, electric shock, or injury. If the power supply cord is damaged, it must be replaced by the manufacturer or its service agent.

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

• If an abnormality (like a burning smell) occurs, stop the air conditioner, disconnect the power supply plug, and/or turn off the breaker. Continuing to operate in an abnormal condition can cause fire or other trouble.

Please observe the following cautions for safe operation:

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

• Do not touch the air inlet or aluminum fin of the outdoor unit to avoid injury.

• Do not place a vase, glass, or other containers with water on the indoor unit. Water dripping into the unit can cause electric shock.

• Do not use an insecticide or flammable spray on the unit, as it may cause a fire or deformation of the cabinet.

• Do not place a pet or houseplant where it will be exposed to direct airflow, as this could cause injury to them.

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

• Do not leave the unit on a damaged installation stand, as it may fall and cause an injury.

• Do not step onto an unstable bench when maintaining the unit, as you may fall and injure yourself.

• Do not pull the power supply cord, as it may cause a fire.

• Do not charge, disassemble, or throw batteries into a fire, as this may result in leakage, fire, or an explosion.

• Do not operate the unit for a long time in high humidity (80% RH or more) with a door or window open. In cooling mode, this can cause water to condense and drip, potentially damaging furniture.

• Do not use the unit for special purposes like preserving precision devices, food, animals, plants, or art objects, as this may cause deterioration of quality.

• Do not place a stove or other appliance where it is exposed to direct airflow, as this may cause imperfect combustion.

• When cleaning the unit, switch it off and disconnect the power supply plug or turn off the breaker to prevent injury from the high-speed fan.

• When the unit is not going to be used for a long time, disconnect the power supply plug or turn off the breaker to prevent fire from collected dirt.

• Ventilate well when using the unit with a stove, etc., to prevent an oxygen shortage.

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

Indoor Unit:

• Front panel

• Air inlet

• Power supply plug and cord

• Air cleaning filter (White bellows type)

• Air filter (Catechin)

• Remote control receiving section

• Vertical vane

• Horizontal vane

• Remote controller

• Display section with Operation Indicator lamp

• Operation section (behind the front panel) with Emergency operation switch

Outdoor Unit:

• Air inlet (back and side)

• Piping

• Drainage hose

• Air outlet

• Drain outlet

The MITSUBISHI ELECTRIC MSH-GA60VB is equipped with an auto restart function. When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and fan speed are stored in memory. If a power failure occurs or the main power is turned off during operation, the “Auto restart function” automatically starts operating in the same mode as the one set with the remote controller just before the shutoff of the main power.

• If the unit was set to off with the remote controller before the power shutoff, it will remain stopped when power is restored.

• If the unit was in emergency operation before the power shutoff, it will restart in the same emergency mode when power returns.

• If the unit was operated in “I FEEL…” mode before a power failure, the operation is not stored in memory. The mode will be decided by the initial room temperature at restart.

1. Power Supply: Insert the power supply plug into the power outlet and/or turn the breaker on. Ensure dirt is removed from the plug and it is inserted securely to prevent fire or electric shock.

2. Check Air Conditioner Type: Your MITSUBISHI ELECTRIC MSH-GA60VB is a COOL & HEAT type, which includes I FEEL, COOL, DRY, and HEAT modes.

3. Prepare Remote Controller: Use only the remote controller provided with the unit.

Follow these steps to set up the remote controller:

1. Remove the front lid and insert 2 new AAA alkaline batteries. Insert the minus pole of the batteries first and check for correct polarity. Then reattach the front lid.

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

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

4. Press the HR. and MIN. (TIME SET) 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 the time by 1 minute.

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

If the remote controller’s batteries are dead or it is malfunctioning, you can use the EMERGENCY OPERATION switch on the indoor unit. The switch is located behind the front panel.

Press the EMERGENCY OPERATION switch to cycle through the modes:

1. First press starts EMERGENCY COOL MODE.

2. Second press starts EMERGENCY HEAT MODE.

3. Third press starts STOP MODE.

When first pressed, the unit will operate in a test run for 30 minutes, then shift to the selected emergency mode.

Emergency Mode Details:

During the initial 30-minute test run, temperature control does not work and fan speed is set to High. The operation mode is indicated by the Operation Indicator lamp on the indoor unit.

To stop the emergency operation, press the switch until the unit enters STOP MODE.

The “I FEEL…” auto operation mode automatically sets the optimum room condition with a single touch.

To start operation:

1. Press the ON/OFF button. The air conditioner will start.

2. If not already selected, press the MODE button until “I FEEL…” is displayed on the remote. The air conditioner will automatically control the operation mode and temperature.

To stop operation:

• Press the ON/OFF button again.

Adjusting Temperature:

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

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

According to the room temperature when the operation starts, the operation mode is automatically set to COOL, DRY, or HEAT. If the operation is restarted within 2 hours of being stopped, it will resume in the same mode it was in before stopping.

Operation Indicator Lamp:

The indicator lamp on the indoor unit shows the operation state:

• Blinking Light: This shows the air conditioner is operating to reach the target temperature. Please wait. (Difference between target and room temperature is about 2°C or more).

• Solid Light: This shows the room temperature is approaching the target temperature. (Difference between target and room temperature is about 2°C or less).

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

2. Select Mode: Press the MODE button repeatedly to cycle through the operation modes. The sequence is: I FEEL… → COOL → DRY → HEAT.

3. Set Temperature: To change the set temperature, press the ▲ button to raise it or the ▼ button to lower it. Each press changes the temperature by about 1°C.

4. Stop: Press the ON/OFF button to stop the unit.

Note:

• In DRY operation, the temperature cannot be set. The room temperature is slightly lowered.

• In HEAT operation, the fan in the outdoor unit may stop automatically to protect the air conditioner if it absorbs too much heat from the air. This is not a malfunction.

Air Flow Velocity (Fan Speed):

• Press the FAN button to change the fan speed. The sequence is: (Low) → (Med.) → (High) → (AUTO).

• Use the (High) setting to cool/heat the room more efficiently. Use the (Low) setting for quieter operation.

Vertical Air Flow Direction (Horizontal Vane):

• Press the VANE button to change the angle of the horizontal vane. The sequence cycles through 5 positions, then SWING, then AUTO.

• Use the SWING operation for the air flow to reach all corners of the room.

• Note: In cooling, if the vane is set to position 4 or 5 for 1 hour, it will automatically move to a horizontal position to prevent condensation. In heating, if the air temperature is too low, the vane will be set to position 1 (horizontal).

Horizontal Air Flow Direction (Vertical Vane):

• Press the WIDE VANE button to change the angle of the vertical vanes. The sequence cycles through several positions and then SWING.

IMPORTANT: Adjust the air flow direction using the remote controller. Moving the vanes manually can cause trouble.

Use the LONG operation when you want the air flow to reach a long distance.

1. While the unit is operating, press the LONG button.

2. The fan speed increases, and the horizontal vane moves to a position for long-distance airflow.

To release the LONG mode:

• Press the LONG button again.

The LONG mode is also released by pressing the VANE button or the ECONO COOL button (during COOL mode).

ECONO COOL is an energy-saving feature for use in COOL mode. It uses a swing air flow pattern which makes you feel cooler than constant air flow, allowing the unit to be set 2°C higher automatically while maintaining comfort, thus saving energy.

To use ECONO COOL:

• While operating in MANUAL COOL mode, press the ECONO COOL button.

• The unit will begin swing operation, and the set temperature will automatically be raised by 2°C.

To release ECONO COOL:

• Press the ECONO COOL button again.

• The operation is also released if you press the VANE or LONG buttons, or change the operation mode.

The current time must be set before using the timer. The ON and OFF timers can be used in combination.

How to set the ON timer:

1. Press the START (On-timer) button during operation. The timer mode will be active.

2. Set the desired ON time using the HR. and MIN. buttons. The HR. button increases time by 1 hour, and the MIN. button increases time by 10 minutes.

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

How to set the OFF timer:

1. Press the STOP (Off-timer) button during operation. The timer mode will be active.

2. Set the desired OFF time using the HR. and MIN. buttons.

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

Note: If a power failure occurs while the timer is active, the timer setting is cancelled. As the unit has an auto restart function, it will start operating with the timer cancelled when power is restored.

1. Perform the FAN operation for 3 to 4 hours to dry the inside of the air conditioner. To do this, set the remote controller to the highest temperature in the MANUAL COOL mode.

2. Turn off the breaker and/or disconnect the power supply plug. This prevents fire from collected dirt.

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 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.

Before starting maintenance: Turn off the breaker and/or disconnect the power supply plug. The fan rotates at high speed and can cause injury if the unit is on.

• Clean the unit using a soft dry cloth.

• For noticeable dirt, wipe the unit with a cloth soaked in a solution of mild detergent diluted in lukewarm water.

• Do not use gasoline, benzine, thinner, polishing powder, or insecticide, as these may damage the unit.

• Do not open the front panel past its level position, as it may come off.

• If the front panel does come off, reattach it by keeping it level and inserting the hinges one by one into the notches at the top of the indoor unit until they click into place, then close the panel.

Clean the air filter about once every 2 weeks.

1. Open the front panel and remove the air filter.

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

3. After washing, dry the air 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.

CAUTION: When the air filter is removed, do not touch the metal parts of the indoor unit to avoid injury.

Replace the air cleaning filter about once every 4 months, or when capacity is lowered due to dirt.

1. Remove the main air filter.

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

3. Install a new air cleaning filter.

4. Install the main air filter and securely close the front panel.

The air cleaning filter is disposable. The standard usable term is about 4 months. If the color of the filter turns dark brown, replace it at once. A clogged filter may lower capacity or cause condensation.

Optional Parts

Before calling for service, check the following points:

If the air conditioner cannot be operated:

• Is the breaker turned on?

• Is the fuse blown?

• Is the ON timer set?

If the room cannot be cooled or heated sufficiently:

• 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?

If the air from the indoor unit smells strange:

• Is the filter clean? The unit may also be circulating odors from walls, carpets, or furniture.

If the remote controller display is dim or doesn’t appear, or the indoor unit does not respond to the remote:

• Are the batteries exhausted?

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

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

If a power failure occurs:

• The air conditioner should start operating again automatically when power is restored due to the auto restart function.

If the problem persists after checking these items, stop using the air conditioner and consult your dealer.

This is a normal protective feature. The microprocessor prevents the unit from restarting for about 3 minutes to protect the compressor. Please wait.

This sound is generated by the normal expansion and contraction of the front panel and other plastic parts due to temperature changes. It is not a malfunction.

These sounds are normal and can be caused by a few things:

• The sound of refrigerant flowing inside the air conditioner.

• The sound of condensed water flowing in the heat exchanger.

• The sound of the heat exchanger defrosting.

• A sound heard when outside air is absorbed from the drain hose (e.g., when a range hood is turned on) or when strong wind blows into the drain hose.

This is a normal occurrence. The cool air from the air conditioner rapidly cools the moisture in the room’s air, which turns it into a visible mist. This is not a malfunction.

This is a protective function to ensure proper operation and prevent water dripping:

• In COOL or DRY mode, if the unit operates with air blowing downward for 1 hour, the airflow direction is automatically set to horizontal to prevent condensed water from dripping.

• In HEAT mode, if the airflow temperature is too low or when the unit is defrosting, the horizontal vane position is automatically set to horizontal.

This is usually normal and part of the cooling or heating process:

• Water Leaks: During COOL and DRY operations, pipes are cooled, causing condensation to form and drip. During HEAT operation, the automatic defrosting cycle melts frost on the outdoor unit, which then drips down. This is not a malfunction.

• White Smoke: In heating operation, vapor generated by the defrosting operation can look like white smoke. This is normal.

This is normal behavior for the heating cycle:

• Delayed Airflow: When heating starts, the air conditioner is preparing to blow out warm air. Please wait a few moments.

• Operation Stops for 10 Minutes: The unit is performing a defrosting cycle for the outdoor unit. This is necessary when the external temperature is low and humidity is high, causing frost to form. The operation will resume automatically after about 10 minutes.

Avoid installing the air conditioner in the following places:

• Where flammable gas could leak, as this may cause an explosion.

• Where there is much machine oil.

• Salty places such as the seaside.

• Where sulfide gas is generated, such as a hot spring.

• Where oil is splashed or the area is filled with oily smoke.

• Where there is high-frequency or wireless equipment.

• Inside mobile vehicles such as a crane truck or ship.

• The outdoor unit should be at least 3m away from TV/radio antennas to prevent interference.

Inspection and Maintenance:

• When the unit is used for several seasons, performance may decrease due to internal dirt.

• Depending on conditions, an odor may be generated, or water may not drain smoothly. It is recommended that the unit be inspected and maintained (charged) by a specialist in addition to your normal cleaning.

Operating Sound Considerations:

• Do not place objects around the air outlet of the outdoor unit, as this can lower capacity or increase operating sound.

• If an abnormal sound is heard, consult your dealer.

• Choose an installation location that can endure the unit’s weight without amplifying vibration, and where the sound will not bother neighbors.