Midea Air Conditioner Owner's Manual

Content

• Important Safety Information
• Hints for Economical Operation
• Parts Names
• Manual Operation
• Adjusting Air Flow Direction
• Maintenance
• Air Conditioner Operations and Performance
• Installation
• Troubles and Causes
• Troubles and Causes (Concerning Remote Controller)

Important Safety Information

CAUTION: Do not attempt to install this unit by yourself. This unit requires installation by qualified persons.

DANGER: Do not attempt to service the unit yourself. This unit has no user-serviceable components. Opening or removing the cover will expose you to dangerous voltage. Turning off the power supply will not prevent potential electric shock.

DANGER: Never put hands or objects into the Air Outlet of indoor or outdoor units. These units are installed with a fan running at high speed. Touching the moving fan will cause serious injury.

DANGER: To avoid the risk of serious electrical shock, never sprinkle or spill water or liquids on the unit.

WARNING: Ventilate the room regularly while the air conditioner is in use, especially if there is also a gas appliance in use in this room. Failure to follow these directions may result in a loss of oxygen in the room.

WARNING: To prevent electric shock, turn off the power or disconnect the power supply plug before beginning any cleaning or other routine maintenance. Follow the directions for cleaning in the Owner's Manual.

WARNING: Do not use liquid cleaners or aerosol cleaners; use a soft and dry cloth for cleaning the unit. To avoid electric shock, never attempt to clean the units by sprinkling water.

CAUTION: Do not use caustic household drain cleaners in the unit. Drain cleaners can quickly destroy the unit components (drain pan and heat exchanger coil etc).

NOTE: For proper performance, operate the unit in temperature and humidity ranges indicated in this owner's manual. If the unit is operated beyond these conditions, it may cause malfunctions of the unit or dew dripping from the unit.

Hints for Economical Operation

To ensure economical operation, please note the following:

• Adjust the air flow direction properly to avoid winding toward your body.
• Adjust the room temperature properly to get a comfortable situation and to avoid supercooling and superheat.
• In cooling, close the curtains to avoid direct sunlight.
• To keep cool or warm air in the room, never open doors or windows more often than necessary.
• Set the timer for the desired operating time.
• Never put obstructions near the air outlet or the air inlet, as this will cause lower efficiency, even a sudden stop.
• If you do not plan to use the unit for a long time, please disconnect the power and remove the batteries from the remote controller. When the power switch is connected, some energy will be consumed, even if the air conditioner isn't in operation. Please disconnect the power to save energy. Switch the power on 12 hours before you restart the unit to ensure a smooth operation.
• A clogged air filter will reduce cooling or heating efficiency; please clean it once every two weeks.

Parts Names

The air conditioner consists of the indoor unit, the outdoor unit, the connecting pipe, and the remote controller.

Cassette Type

Diagram showing the components of a Cassette Type air conditioner:

• a) Indoor unit
• b) Outdoor unit
• c) Remote controller
• d) Air-in
• e) Air-out
• f) Air outlet
• g) Air flow louver (at air outlet)
• h) Connecting pipe
• i) Drain hose
• j) Air inlet (with air filter in it)
• k) Drain pump (drain water from indoor unit)
• l) Infrared signal receiver
• m) Temporary button
• n) Operation lamp
• o) Timer indicator
• p) PRE-DEF indicator (cooling and heating type) or fan only indicator (cooling only type)
• q) Alarm indicator

NOTICE! This chart is based on 24000Btu/h type. So, a few differences may exist on the outlook and functions from yours.

High-static Pressure Parvis Split Type

Diagram showing the components of a High-static Pressure Parvis Split Type air conditioner:

• a) Indoor unit
• b) Outdoor unit
• c) Remote controller
• d) Air-in
• e) Air-out
• f) Air outlet
• g) Heat exchanger
• h) Connecting pipe
• i) Drain hose
• j) E-Box
• k) Infrared signal receiver
• l) Temporary button
• m) Operation lamp
• n) Timer indicator
• o) PRE-DEF indicator (cooling and heating type) or fan only indicator (cooling only type)
• p) Alarm indicator

NOTICE! This chart is based on 24000Btu/h type. So, a few differences may exist on the outlook and functions from yours.

Duct and Ceiling Type

Diagram showing the components of a Duct and Ceiling Type air conditioner:

• a) Indoor unit
• b) Outdoor unit
• c) Remote controller
• d) Air-in
• e) Air-out
• f) Air outlet
• g) Air flow louver (at air outlet)
• h) Connecting pipe
• i) Drain hose
• j) Air inlet (with air filter in it)
• k) Infrared signal receiver
• l) Manual button
• m) Operation lamp
• n) Timer indicator
• o) PRE-DEF indicator
• p) Alarm indicator

NOTICE: In the case of "cooling only type", it is the "FAN ONLY" indicator.

NOTE: All the pictures in this manual are for explanation purpose only. There may be slightly different from the air conditioner you purchased (depend on model). The actual shape shall prevail.

For Slim Duct Type

Diagram showing the components of a Slim Duct Type air conditioner:

• a) Indoor unit
• b) Outdoor unit
• c) Remote controller
• d) Air-in
• e) Air-out
• f) Air outlet
• g) E-Box
• h) Connecting pipe
• i) Drain hose
• j) Infrared signal receiver
• k) Temporary button
• l) Operation lamp
• m) Timer indicator
• n) PRE./DEF.indicator (cooling and heating type) or fan only indicator (cooling only type)
• o) Alarm indicator

NOTICE! This chart is based on 24000Btu/h. type. So, a few differences may exist on the outlook and functions from yours.

For Slim DUCT with air inlet box Type

Diagram showing the components of a Slim DUCT with air inlet box Type air conditioner:

• a) Indoor unit
• b) Outdoor unit
• c) Remote Controller
• d) Air-outlet
• e) Air-out
• f) Air-inlet
• g) Heat exchanger
• h) E-Box
• i) Connecting pipe
• j) Drain hose
• k) Infrared signal receiver
• l) Temporary button
• m) Operation lamp
• n) Timer indicator
• o) PRE./DEF.Indicator (Cooling and heating type) or fan only indicator (cooling only type)
• p) Alarm indicator

Four-way Cassette(slim) Type

Diagram showing the components of a Four-way Cassette(slim) Type air conditioner:

Indoor Unit Assy

• 1 Indoor Unit
• 2 Air outlet
• 3 Drain hose
• 4 Air Inlet (Air filter installed inside to prevent the dust)
• 5 Drain Pump (Internal installed), water drain from indoor unit.
• 6 Vertical louver
• 7 Connecting pipe
• 8 Infrared Signal receiver
• 9 Manual button/SET button
• 10 Timer indicator
• 11 Defrost indicator heating/cooling type or fan indicator (cooling only type)
• 12 Run lamp
• 13 Alarm indicator

Outdoor Unit Assy

Diagram showing the control board with indicator lamps.

NOTE: These three indication lamps flash in cycles when solar PV ECO function is activated. (Applicable to the unit adopts solar photovoltaic system only.)

This picture is based on the type of 18000Btu/h, So the appearance and function may be slightly different from the unit you purchased.

One-way Cassette Type

INDOOR UNIT

• 1 Outlet louver
• 2 Inlet
• 3 Filter
• 4 Display panel
• 5 Remote controller

OUTDOOR UNIT

• 6 Refrigerant connecting, drain hose pipe
• 7 Electric wiring
• 8 Trap
• 9 Air outlet
• 10 Air inlet (side and rear)

DISPLAY PANEL

Diagram showing the display panel for Cooling&Heating type and Cooling-only type.

• 11 MANUAL button
• 12 Run lamp
• 13 FAN indicator(Cooling/Heating type without)
• 14 TIMER indicator
• 15 ALARM indicator
• 16 DEF. indicator(Cooling-only type without)

Ceiling & Floor Type (for VERTICAL DISCHARGE AIR CONDITIONER)

Diagram showing the components of a Ceiling & Floor Type air conditioner:

• a) Indoor unit
• b) Outdoor unit
• c) Remote controller
• d) Air-in
• e) Air flow louver (at air outlet)
• f) Connecting pipe
• g) Drain hose
• h) Air inlet (with air filter in it)
• i) Installation part
• j) Infrared signal receiver
• k) FAN/DEF indicator (For cooling and heating type, it's DEF., for cooling only type, it's FAN)
• l) Operation lamp
• m) Timer indicator
• n) Alarm indicator
• o) Temporary button
• p) Air-out

NOTICE! The chart based on one model of our product is for reference only, which may be different from the unit you purchased.

Manual Operation

Ceiling & Floor

This function is used to operate the unit temporarily in case you misplace the remote controller or its batteries are exhausted. Two modes including AUTO and FORCED COOL can be selected through the TEMPORARY BUTTON on the air-in grill control box of the indoor unit. Once you push this button, the air conditioner will run in the following order: AUTO, FORCED COOL, OFF, and back to AUTO.

1. AUTO: The OPERATION lamp is lit, and the air conditioner will run under AUTO mode. The remote controller operation is enabled to operate according to the received signal.
2. FORCED COOL: The OPERATION lamp flashes, the air conditioner will turn to AUTO after it is enforced to cool with a wind speed of HIGH for 30 minutes. The remote controller operation is disabled.
3. OFF: The OPERATION lamp goes off. The air conditioner is OFF while the remote controller operation is enabled.

Four-way Cassette

This function is used to operate the unit temporarily in case you misplace the remote controller or its batteries are exhausted. Two modes including AUTO and mandatory COOL can be selected through the TEMPORARY BUTTON on the air inlet grill control box of the indoor unit. Once you push this button, the air conditioner will run in the following order: AUTO, mandatory COOL, OFF, and back to AUTO.

1. AUTO: The OPERATION lamp is lit, and the air conditioner will run under AUTO mode. The remote controller operation is enabled to operate according to the received signal.
2. MANDATORY COOL: The OPERATION lamp flashes, the air conditioner will turn to AUTO after it is enforced to cool with a wind speed of HIGH for 30 minutes. The remote controller operation is disabled.
3. OFF: The OPERATION lamp goes off. The air conditioner is OFF while the remote controller operation is enabled.

Diagram showing the TEMPORARY BUTTON on the indoor unit.

Adjusting Air Flow Direction

Cassette Type

While the unit is in operation, you can adjust the air flow louver to change the flow direction and naturalize the room temperature evenly, thus enjoying it more comfortably.

1. Set the desired air flow direction. Push the SWING button to adjust the louver to the desired position and push this button again to maintain the louver at this position.
2. Adjust the air flow direction automatically. Push the SWING button; the louver will swing automatically.

Diagram illustrating how to adjust the louver up and down.

While this function is set, the swing fan of the indoor unit runs; otherwise, the swing fan does not run. The swing scale of every side is 30°. When the air conditioner isn't in operation (including when "TIMER ON" is set), the SWING button will be disabled.

Duct and Ceiling Type

The following is how to adjust air flow direction when the air outlet part (separately sold) is used with the indoor unit.

Cooling: To effectively cool the whole room, please set the louver so that the air can come out horizontally.

Heating: To effectively heat the bottom of the room, please set the louver so that the air can come out downwards.

Maintenance

WARNING: Before you clean the air conditioner, be sure to disconnect the power supply plug.

Cleaning the Indoor Unit and Remote Controller

CAUTIONS:

• Use a dry cloth to wipe the indoor unit and remote controller.
• A cloth dampened with cold water may be used on the indoor unit if it is very dirty.
• Never use a damp cloth on the remote controller.
• Do not use a chemically-treated duster for wiping or leave such material on the unit for long, because it may damage or fade the surface of the unit.
• Do not use benzine, thinner, polishing powder, or similar solvents for cleaning. These may cause the plastic surface to crack or deform.

If you do not plan to use the unit for at least 1 month:

1. Operate the fan for about half a day to dry the inside of the unit.
2. Stop the air conditioner and disconnect power.
3. Remove the batteries from the remote controller.

Checks Before Operation

CAUTIONS:

• Check that the wiring is not broken off or disconnected.
• Check that the air filter is installed. (Some air-conditioners haven't air filters.)
• Check that the outdoor unit air outlet or inlet is not blocked.

Before you clean the air conditioner, be sure to disconnect the power supply plug.

Cleaning the Air Filter

• The air filter can prevent dust or other particulate from going inside. In case of blockage of the filter, the working efficiency of the air conditioner may greatly decrease. Therefore, the filter must be cleaned once every two weeks during long time usage.
• If the air conditioner is positioned in a dusty place, the cleaning frequency of the air filter must be increased.
• If the accumulated dust is too heavy to be cleaned, please replace the filter with a new one (replaceable air filter is an optional fitting).
• The filter cleaning should be performed by a suitable service provider.

Cassette Type

1. Open the air-in grill. Push the grill switches towards the middle simultaneously as indicated in sketch A. Then pull down the air-in grill.

Cautions: The control box cables, which are originally connected with the main body electrical terminators, must be pulled off before doing as indicated above.

Diagram showing how to open the air-in grill (Sketch A) and remove the air filter (Sketch B).

2. Take out the air-in grill (together with the air filter shown in Sketch B). Pull the air-in grill down at 45° and lift it up to take out the grill.
3. Dismantle the air filter.
4. Clean the air filter (Vacuum cleaner or pure water may be used to clean the air filter. If the dust accumulation is too heavy, please use a soft brush and mild detergent to clean it and dry out in a cool place).

Duct and Ceiling Type

1. Open the air-in grill. Push the grill switches towards the middle simultaneously as indicated in the figure sketch. Then pull down the air-in grill.

Cautions: The control box cables, which are originally connected with the main body electrical terminators, must be pulled off before doing as indicated above.

2. Take out the air-in grill.
3. Dismantle the air filter.

Diagram showing how to open and clean the air filter.

Fig. 1

Fig. 2

• The air-in side should face up when using a vacuum cleaner (See Fig. 1).
• The air-in side should face down when using water (See Fig. 2).

Cautions: Do not dry out the air filter under direct sunshine or with fire.

5. Re-install the air filter.
6. Install and close the air-in grill in the reverse order of step 1 and 2 and connect the control box cables to the corresponding terminators of the main body.

Note: High-static Pressure Parvis Split Type has no air filter.

Air Conditioner Operations and Performance

Three-minute protection feature

A protection feature prevents the air conditioner from being activated for approximately 3 minutes when it restarts immediately after operation.

Power failure

Power failure during operation will stop the unit completely.

• The OPERATION lamp on the indoor unit will start flashing when power is restored.
• To restart operation, push the ON/OFF button on the remote controller.
• Lightning or a car wireless telephone operating nearby may cause the unit to malfunction. Disconnect the unit with the power and then connect the unit with the power again. Push the ON/OFF button on the remote controller to restart operation.

Air conditioner operating conditions

For proper performance, run the air conditioner under the following temperature conditions:

NOTE:

1. If the air conditioner is used outside of the above conditions, certain safety protection features may come into operation and cause the unit to function abnormally.
2. Room relative humidity less than 80%. If the air conditioner operates in excess of this figure, the surface of the air conditioner may attract condensation. Please set the vertical air flow louver to its maximum angle (vertically to the floor), and set HIGH fan mode.
3. Optimum performance will be achieved within these operating temperatures.

Special functions

Refrigerant Leakage Detection (optional)

With this new technology, the display area will appear EC (if applicable) and the LED indication lamps continue flashing when the outdoor unit detects refrigerant leakage.

Louver Angle Memory Function (optional)

For some models, the machine is specially designed with a louver angle memory function. Power failure during operation or pressing the ON/OFF button on the remote controller will stop the unit completely. When the power restores or pressing the ON/OFF button on the remote controller again, the unit restarts automatically with the previous open angle of the horizontal louver by the memory function. We strongly recommend that the open angle of the horizontal louver should not be set too small, in case condensed water forms and drops from the horizontal louver. Press the Manual control button, and the open angle of the horizontal louver will be restored to the standard angle.

INSTALLATION

Location:

• During cooling operation, the air conditioner will dry the room air, so please fix a pipe to drain all the water away from the air conditioner.
• Please place the indoor unit more than one meter away from the TV set and the radio to avoid picture and noise interference.
• Powerful radio transmitters or any other devices radiating high frequency radio waves can cause the air conditioner to malfunction. Please consult the dealer where you purchased the air conditioner before installing it.
• Do not fix the unit in a dangerous region with combustible gas or volatile matter.
• If the air conditioner operates in an atmosphere containing oils (machine oil), salt (near a coastal area), sulfide gas (near a hot spring), etc., such substances may lead to failure of the air conditioner.

Be careful of noise or vibrations

• Please fix the unit in a stable place to avoid noise or vibrations.
• The noise near the air outlet of the outdoor unit may enter the air exit.
• Locate the outdoor unit where noise emitted by it or hot air from its air outlet will cause no nuisance to your neighbors.
• If the air conditioner sounds abnormal during operation, contact the dealer where you purchased the air conditioner.

Wire

• To avoid electric shock, please link the air conditioner with the ground. The plug in the air conditioner has joined the ground wiring; please don't change it freely.
• The power socket is used as the air conditioner specially.
• Don't pull the power wiring hard.
• When linking the air conditioner with the ground, observe the local rules.
• If necessary, use the power fuse or the circuit breaker or the corresponding scale ampere. If you want to change the power wiring, please contact the service center of the local MD electric appliance.

Relocation

If you move out or if it is desired to relocate the air conditioner, consult your dealer, because special skills to withdraw Freon, purge air, and perform other operations are required.

TROUBLES AND CAUSES

Before you ask for servicing or repairs, check the following points.

Recheck

• Inoperative: The power fuse is blown or the circuit breaker has been tripped. The batteries in the remote controller are exhausted. The timer is set.
• Does not cool or heat well: The air inlet or outlet of the outdoor unit is blocked. Doors or windows are open. The air filter is clogged with dust. The louver is not at the correct position. The fan speed is set to low. The temperature setting is too high or too low.
• These are not failures: Room air is smelly. A bad odor comes from the air conditioner. Smells impregnated in the wall, carpet, furniture, clothing, or furs, are coming out. A white mist of chilled air or water is generated from the outdoor unit.

CAUTION: If any of the following conditions occur, stop the air conditioner immediately, set the power switch to OFF, and contact the dealer:

• The indicator lamps flash rapidly (five times per second), you disconnect the unit with the power and then connect the unit with the power again after two or three minutes, but the lamps still flash.
• Switch operations are erratic.
• The fuse is blown frequently or the circuit breaker is tripped frequently.
• Foreign matter or water has fallen inside the air conditioner.
• Any other unusual condition is observed.

TROUBLES AND CAUSES (CONCERNING REMOTE CONTROLLER)

Before you ask for servicing or repairs, check the following points.

Error Codes

The following displays indicate an error or problem:

The displayed error code differs from appliance to appliance. The actual display of the indoor unit shall prevail.