00_CV_3P191290-1A.fm Page 1 Tuesday, December 26, 2006 1:49 PM
DAIKIN ROOM AIR CONDITIONER

Operation Manual

MODELS FVXS25FV1B FVXS35FV1B FVXS50FV1B
English Deutsch Franais Nederlands Espaol Italiano Portugues Trke
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CONTENTS

READ BEFORE OPERATION
Safety precautions... 2 Names of parts.. 4 Preparation Before Operation. 7

OPERATION

AUTO DRY COOL HEAT FAN Operation... 10 Adjusting the Air Flow Direction. 12 POWERFUL Operation.. 14 OUTDOOR UNIT QUIET Operation. 15 ECONO Operation.. 16 TIMER Operation... 17 WEEKLY TIMER Operation.. 19 Note for Multi System.. 24

Care and Cleaning.. 26

TROUBLE SHOOTING

Trouble Shooting.. 29

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Safety precautions

Keep this manual where the operator can easily find them. Read this manual attentively before starting up the unit. For safety reason the operator must read the following cautions carefully. This manual classifies precautions into WARNINGS and CAUTIONS. Be sure to follow all precautions below: they are all important for ensuring safety.

WARNING

CAUTION
If you do not follow these instructions exactly, the unit may If you do not follow these instructions exactly, the unit may cause property damage, personal injury or loss of life. cause minor or moderate property damage or personal injury.
Never do. Be sure to earth the air conditioner. Never touch the air conditioner (including the remote controller) with a wet hand.
Be sure to follow the instructions. Never cause the air conditioner (including the remote controller) to get wet.
In order to avoid fire, explosion or injury, do not operate the unit when harmful, among which flammable or corrosive gases, are detected near the unit. It is not good for health to expose your body to the air flow for a long time. Do not put a finger, a rod or other objects into the air outlet or inlet. As the fan is rotating at a high speed, it will cause injury. Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range. If the air conditioner is not cooling (heating) properly, the refrigerant may be leaking, so call your dealer. When carrying out repairs accompanying adding refrigerant, check the content of the repairs with our service staff. Do not attempt to install the air conditioner by your self. Incorrect work will result in water leakage, electric shocks or fire. For installation, consult the dealer or a qualified technician. In order to avoid electric shock, fire or injury, if you detect any abnormally such as smell of fire, stop the operation and turn off the breaker. And call your dealer for instructions. Depending on the environment, an earth leakage breaker must be installed. Lack of an earth leakage breaker may result in electric shocks or fire. The air conditioner must be earthed. Incomplete earthing may result in electric shocks. Do not connect the earth line to a gas pipe, water pipe, lightning rod, or a telephone earth line.

In order to avoid any quality deterioration, do not use the unit for cooling precision instruments, food, plants, animals or works of art. Never expose little children, plants or animals directly to the air flow. Do not place appliances which produce open fire in places exposed to the air flow from the unit or under the indoor unit. It may cause incomplete combustion or deformation of the unit due to the heat.
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Do not block air inlets nor outlets. Impaired air flow may result in insufficient performance or trouble. Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip. After a long use, check the unit stand and fittings for damage. Do not touch the air inlet and alminum fins of outdoor unit. It may cause injury. The appliance is not intended for use by young children or infirm persons without supervision. Young children should be supervised to ensure that they do not play with the appliance. To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the air conditioner. Before cleaning, be sure to stop the operation, turn the breaker off or pull out the supply cord. Do not connect the air conditioner to a power supply different from the one as specified. It may cause trouble or fire. Arrange the drain hose to ensure smooth drainage. Incomplete draining may cause wetting of the building, furniture etc. Do not place objects in direct proximity of the outdoor unit and do not let leaves and other debris accumulate around the unit. Leaves are a hotbed for small animals which can enter the unit. Once in the unit, such animals can cause malfunctions, smoke or fire when making contact with electrical parts. Do not operate the air conditioner with wet hands.
Do not wash the indoor unit with excessive water, only use a slightly wet cloth. Do not place things such as vessels containing water or anything else on top of the unit. Water may penetrate into the unit and degrade electrical insulations, resulting in an electric shock.

Installation site.

To install the air conditioner in the following types of environments, consult the dealer. Places with an oily ambient or where steam or soot occurs. Salty environment such as coastal areas. Places where sulfide gas occurs such as hot springs. Places where snow may block the outdoor unit. The drain from the outdoor unit must be discharged to a place of good drainage.

Appearance of the outdoor unit may differ from some models.
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Remote Controller

<ARC452A1>
1. Signal transmitter: It sends signals to the indoor unit. 2. Display: It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) 3. FAN setting button: It selects the air flow rate setting. 4. POWERFUL button: POWERFUL operation (page 14.) 5. ON/OFF button: Press this button once to start operation. Press once again to stop it. 6. TEMPERATURE adjustment buttons: It changes the temperature setting. 7. MODE selector button: It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) (page 10.) 8. QUIET button: OUTDOOR UNIT QUIET operation (page 15.) 9. ECONO button: ECONO operation (page 16.) 10. SWING button: Adjusting the Air Flow Direction (page 12.) 11. WEEKLY button: WEEKLY TIMER operation (page 19.) 12. PROGRAM button: WEEKLY TIMER operation (page 19.) 13. COPY button: WEEKLY TIMER operation (page 19.) 14. BACK button: WEEKLY TIMER operation (page 19.) 15. NEXT button: WEEKLY TIMER operation (page 19.) 16. SELECT button: It changes the timer setting. (page 17.) 17. OFF TIMER button: (page 17.) 18. ON TIMER button: (page 18.) 19. TIMER CANCEL button: It cancels the timer setting. (page 17, 18.) It cannot be used for the WEEKLY TIMER operation. 20. CLOCK button: (page 8.)

<Open the lid> 20

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Preparation Before Operation

To set the batteries

1. Slide the front cover to take it off. 2. Set two dry batteries (LR03AAA). 3. Set the front cover as before.
Position + and correctly!
To operate the remote controller
To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not operate. Do not drop the remote controller. Do not get it wet. The maximum distance for communication is about 7m.

Receiver

To fix the remote controller holder on the wall
1. Choose a place from where the signals reach the unit. 2. Fix the holder to a wall, a pillar, or similar location with the screws procured locally. 3. Place the remote controller in the remote controller holder.

Remote controller holder

To remove, pull it upwards.

ATTENTION

About batteries When replacing the batteries, use batteries of the same type, and replace the two old batteries together. When the system is not used for a long time, take the batteries out. We recommend replacing once a year, although if the remote controller display begins to fade or if reception deteriorates, please replace with new alkaline batteries. Using manganese batteries reduces the lifespan. The attached batteries are provided for the initial use of the system. The usable period of the batteries may be short depending on the manufactured date of the air conditioner. About remote controller Never expose the remote controller to direct sunlight. Dust on the signal transmitter or receiver will reduce the sensitivity. Wipe off dust with soft cloth. Signal communication may be disabled if an electronic-starter-type fluorescent lamp (such as inverter-type lamps) is in the room. Consult the shop if that is the case. If the remote controller signals happen to operate another appliance, move that appliance to somewhere else, or consult the shop.
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To set the clock

1. Press CLOCK button.
is displayed. and blinks.
2. Press SELECT button to set the current day of the week. 3. Press CLOCK button.

blinks.

4. Press SELECT button to set the clock to the present time.
Holding down or button rapidly increases or decreases the time display.

5. Press CLOCK button.

Always point the remote controller at the indoor unit when pushing the buttons when setting the indoor units internal clock. blinks.

1, 3, 5

If the indoor units internal clock is not set to the correct time, the WEEKLY TIMER will not operate punctually.
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Turn the breaker ON

Turning ON the breaker closes the flap. (This is a normal procedure.)

Tips for saving energy

Be careful not to cool (heat) the room too much. Keeping the temperature setting at a moderate level helps save energy. Cover windows with a blind or a curtain. Blocking sunlight and air from outdoors increases the cooling (heating) effect. Clogged air filters cause inefficient operation and waste energy. Clean them once in about every two weeks.
Recommended temperature setting For cooling:26C 28C For heating:20C 24C

Please note

The air conditioner always consumes 15-35 watts of electricity even while it is not operating. If you are not going to use the air conditioner for a long period, for example in spring or autumn, turn the breaker OFF. Use the air conditioner in the following conditions.
Mode COOL Operating conditions Outdoor temperature:2MK(X)S40/to 46C 2MK(X)Sto 46C 3/4/5MK(X)S 10 to 46C RK(X)S 10 to 46C Indoor temperature: 18 to 32C Indoor humidity: 80% max. Outdoor temperature:2MXSto 24C 2MXS50/to 24C 3/4/5MXS 15 to 24C RXS 15 to 24C Indoor temperature: 10 to 30C Outdoor temperature:2MK(X)S40/to 46C 2MK(X)Sto 46C 3/4/5MK(X)S 10 to 46C RK(X)S 10 to 46C Indoor temperature: 18 to 32C Indoor humidity: 80% max. If operation is continued out of this range A safety device may work to stop the operation. (In multi system, it may work to stop the operation of the outdoor unit only.) Condensation may occur on the indoor unit and drip.

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Adjusting the Air Flow Direction
You can adjust the air flow direction to increase your comfort.
To adjust the horizontal blade (flap)

1. Press SWING button.

is displayed on the LCD and the flaps will begin to swing.
2. When the flap has reached the desired position, press SWING button once more.
The flap will stop moving. disappears from the LCD.
To adjust the vertical blades (louvers)
Hold the knob and move the louver. (You will find a knob on the left-side and the rightside blades.)
Notes on flap and louvers angle
Unless SWING is selected, you should set the flap at a near-horizontal angle in HEAT mode and at a upward position in COOL or DRY mode to obtain the best performance. ATTENTION When adjusting the flap by hand, turn off the unit, and use the remote controller to restart the unit. Be careful when adjusting the louvers. Inside the air outlet, a fan is rotating at a high speed.

HEAT COOL/ DRY

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Air flow selection

Make air flow selection according to what suits you.
When setting the air flow selection switch to
Operating mode Situation When the room has become fully cool, or when one hour has passed since turning on the air conditioner. At start of operation or other times when the room is not fully cooled. At times other than below. (Normal time.)

Blowing pattern

Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. So that air does not come into direct contact with people, air is blown upper air outlet, room temperature is equalized.

COOL mode

HEAT mode
Air is blown from the upper and lower air outlets for high speed cooling during COOL mode, and for filling the room with warm air during HEAT mode. At start or when air temperature is low. So that air does not come into direct contact with people. Air is blown upper air outlet.
During Dry mode, so that cold air does not come into direct contact with people, air is blown upper air outlet.
When setting the air outlet selection switch to
Regardless of the operating mode or situation, air blows from the upper air outlet. Use this switch when you do not want air coming out of the lower air outlet. (While sleeping etc.)
Do not try to adjust the flap by hand. When adjusting by hand, the mechanism may not operate properly or condensation may drip from air outlets.

To start ECONO operation

1. Press ECONO button.

is displayed on the LCD.

To cancel ECONO operation
2. Press ECONO button again.

disappears from the LCD.

ECONO Operation can only be set when the unit is running. Pressing the operation stop button causes the settings to be canceled, and the disappears from the LCD. ECONO operation is a function which enables efficient operation by limiting the power consumption of the outdoor unit (operating frequency). ECONO operation functions in AUTO, COOL, DRY, and HEAT modes. POWERFUL operation and ECONO operation cannot be used at the same time. Priority is given to the function of whichever button is pressed last. Power consumption may not drop even if ECONO operation is used, when the level of power consumption is already low.
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TIMER Operation

Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination.
To use OFF TIMER operation
Check that the clock is correct. If not, set the clock to the present time. (page 8.)
1. Press OFF TIMER button.

is displayed. blinks.

2. Press SELECT button until the time setting reaches the point you like.
Every pressing of either button increases or decreases the time setting by 10 minutes. Holding down either button changes the setting rapidly.
3. Press OFF TIMER button again.
The TIMER lamp lights up.

1, 3 4

To cancel the OFF TIMER Operation

4. Press CANCEL button.

The TIMER lamp goes off.
When TIMER is set, the present time is not displayed. Once you set ON, OFF TIMER, the time setting is kept in the memory. (The memory is canceled when remote controller batteries are replaced.) When operating the unit via the ON/OFF Timer, the actual length of operation may vary from the time entered by the user. (Maximum approx. 10 minutes) NIGHT SET MODE When the OFF TIMER is set, the air conditioner automatically adjusts the temperature setting (0.5C up in COOL, 2.0C down in HEAT) to prevent excessive cooling (heating) for your pleasant sleep.
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To use ON TIMER operation
1. Press ON TIMER button.
3. Press ON TIMER button again.

2 1, 3

To cancel ON TIMER operation
To combine ON TIMER and OFF TIMER
A sample setting for combining the two timers is shown below.

(Example)

Present time: 11:00 p.m. (The unit operating) OFF TIMER at 0:00 a.m. ON TIMER at 7:00 a.m.

Display

Combined
In the following cases, set the timer again. After a breaker has turned OFF. After a power failure. After replacing batteries in the remote controller.
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WEEKLY TIMER Operation

Up to 4 timer settings can be saved for each day of the week.
To use WEEKLY TIMER operation
Make sure the day of the week and time are set. If not, set the day of the week and time. (page 8.) The following procedure is to make a reservation on Monday for Tuesday 6:00 am/27C.

1. Press

button.
The day of the week and the reservation number will be displayed. 1 to 4 settings can be made per day.
2. Press the SELECT button to select the desired day of the week and reservation number.
Pressing the SELECT button changes the reservation number and the day of the week.

3. Press NEXT button.

The day of the week will be set. and blink.

3, 5 2, 4, 6

4. Press SELECT button to select the desired mode.

and or will flash.

ON TIMER

OFF TIMER

no setting
To go to the next reservation setting, select no setting.

5. Press NEXT button.

The weekly mode will be set. and blink.
6. Press SELECT button to select the desired time.
The time can be set between 0:00 and 23:50 in 10 minute intervals. Press BACK button to return to the mode setting.
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7. Press NEXT button.

The time will be set. and the temperature blink.
8. Press SELECT button to select the desired temperature.
The temperature can be set between 10C and 32C. To return to the time setting, press BACK button. The set temperature is only displayed when the mode setting is on.

9. Press NEXT button.

The temperature will be set. The temperature will be set and go to the next reservation setting. Set the following using the same procedures.
10.Press button to complete the setting.
Point the remote controller toward the air conditioner and press the buttons to operate. The air conditioner will beep and the operation lamp will flash.

7, 9 8

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To cancel WEEKLY TIMER operation
11.Press WEEKLY button to deactivate the WEEKLY operation.
The will disappear from the display. The TIMER lamp goes off. To reactivate the WEEKLY TIMER operation, press the WEEKLY button again.

2. Priority when POWERFUL operation is used.
Example * Room A is the Priority Room in the examples. The indoor units in Rooms A,B,C and D are all operating. If the unit in Room A enters POWERFUL operation, operation capacity will be concentrated in Room A. In such a case, the cooling (heating) efficiency of the units in Rooms B,C and D may be slightly reduced. Example * Room A is the Priority Room in the examples. Just by setting the unit in Room A to QUIET operation, the air conditioner starts OUTDOOR UNIT QUIET operation. You dont have to set all the operated indoor units to QUIET operation.
3. Priority when using OUTDOOR UNIT QUIET operation.
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Care and Cleaning

CAUTION Units Indoor unit, Outdoor unit and Remote controller
1. Wipe them with dry soft cloth. Before cleaning, be sure to stop the operation and turn the breaker OFF.

Front panel

1. Open the front panel.
Slide the two stoppers on the left and right sides inward until they click.
2. Remove the front panel.
Remove the string. Allowing the front panel to fall forward will enable you to remove it.

String

3. Clean the front panel.
Wipe it with a soft cloth soaked in water. Only neutral detergent may be used. In case of washing the front panel with water, dry it with cloth, dry it up in the shade after washing.
4. Attach the front panel.
Insert the front panel into the grooves of the unit (3 places). Attach the string to the right, inner-side of the front grille. Close the panel slowly.
Place front panel in grooves. String
Dont touch the metal parts of the indoor unit. If you touch those parts, this may cause an injury. When removing or attaching the front panel, use a robust and stable stool and watch your steps carefully. When removing or attaching the front panel, support the panel securely with hand to prevent it from falling. For cleaning, do not use hot water above 40C, benzine, gasoline, thinner, nor other volatile oils, polishing compound, scrubbing brushes, nor other hand stuff. After cleaning, make sure that the front panel is securely fixed.
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Filters

1. Open the front panel. (page 26.)
2. Remove the air filter.
Press the claws on the right and left of the air filter down slightly, then pull upward.

3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter.
Hold the tabs of the frame, and remove the claws in 4 places.
4. Clean or replace each filter.

See figure.

5. Set the air filter and Titanium Apatite Photocatalytic Air-Purifying Filter as they were and close the front panel.
Operation without air filters may result in troubles as dust will accumulate inside the indoor unit.
Titanium Apatite Photocatalytic Air-Purifying Filter

Air filter

Air Filter
1. Wash the air filters with water or clean them with vacuum cleaner.
If the dust does not come off easily, wash them with neutral detergent thinned with lukewarm water, then dry them up in the shade. It is recommended to clean the air filters every 2 weeks.
Titanium Apatite Photocatalytic Air-Purifying Filter
The Titanium Apatite Photocatalytic Air-Purifying Filter can be renewed by washing it with water once every 6 months. We recommend replacing it once every 3 years.

[ Maintenance ]

1. Vacuum dusts, and soak in warm water or water for about 10 to 15 minutes if dirt is heavy. 2. Do not remove filter from frame when washing with water. 3. After washing, shake off remaining water and dry in the shade. 4. Since the material is made out of paper, do not wring out the filter when removing water from it. 1. Remove the tabs on the filter frame and replace with a new filter.
Dispose of the old filter as flammable waste.

[ Replacement ]

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Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner. Dispose of the old filter as flammable waste. Item Titanium Apatite Photocatalytic Air-Purifying Filter (without frame) 1 set Part No. KAF968A42
Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the service shop if this is the case.
Before a long idle period
1. Operate the FAN only for several hours on a fine day to dry out the inside.
Press MODE button and select FAN operation. Press ON/OFF button and start operation.
2. After operation stops, turn off the breaker for the room air conditioner. 3. Clean the air filters and set them again. 4. Take out batteries from the remote controller.
When a multi outdoor unit is connected, make sure the heating operation is not used at the other room befure you use the fan operation. (page 24.)

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Trouble Shooting

These cases are not troubles.
The following cases are not air conditioner troubles but have some reasons. You may just continue using it.

Explanation

Operation does not start soon. This is to protect the air conditioner. You should wait for about 3 minutes. When ON/OFF button was pressed soon after operation was stopped. When the mode was reselected. Hot air does not flow out soon after the start of heating operation. The heating operation stops suddenly and a flowing sound is heard. The outdoor unit emits water or steam. The air conditioner is warming up. You should wait for 1 to 4 minutes. (The system is designed to start discharging air only after it has reached a certain temperature.) The system is taking away the frost on the outdoor unit. You should wait for about 4 to 12 minutes. In HEAT mode The frost on the outdoor unit melts into water or steam when the air conditioner is in defrost operation. In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips. This happens when the air in the room is cooled into mist by the cold air flow during cooling operation. This is because the air in the room is cooled by the heat exchanger and becomes mist during defrost operation.
Mist comes out of the indoor unit.
The indoor unit gives out odour. This happens when smells of the room, furniture, or cigarettes are absorbed into the unit and discharged with the air flow. (If this happens, we recommend you to have the indoor unit washed by a technician. Consult the service shop where you bought the air conditioner.) The outdoor fan rotates while the air conditioner is not in operation. After operation is stopped: The outdoor fan continues rotating for another 60 seconds for system protection. While the air conditioner is not in operation: When the outdoor temperature is very high, the outdoor fan starts rotating for system protection. For system protection, the air conditioner may stop operating on a sudden large voltage fluctuation. It automatically resumes operation in about 3 minutes.
The operation stopped suddenly. (OPERATION lamp is on.)
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Check again.

Please check again before calling a repair person.
The air conditioner does not operate. (OPERATION lamp is off.)

Heating cannot be selected, even though the unit is heat pump model.
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Call the service shop immediately.
When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself. Incorrect work may result in electric shocks or fire. Consult the service shop where you bought the air conditioner. If one of the following symptoms takes place, call the service shop immediately.
The power cord is abnormally hot or damaged. An abnormal sound is heard during operation. The safety breaker, a fuse, or the earth leakage breaker cuts off the operation frequently. A switch or a button often fails to work properly. There is a burning smell. Water leaks from the indoor unit.
After a power failure The air conditioner automatically resumes operation in about 3 minutes. You should just wait for a while.
Turn the breaker OFF and call the service shop.
Lightning If lightning may strike the neighbouring area, stop operation and turn the breaker OFF for system protection.

Disposal requirements

Your air conditioning product is marked with this symbol. This means that electrical and electronic products shall not be mixed with unsorted household waste. Do not try to dismantle the system yourself: the dismantling of the air conditioning system, treatment of the refrigerant, of oil and of other parts must be done by a qualified installer in accordance with relevant local and national legislation. Air conditioners must be treated at a specialized treatment facility for re-use, recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for the environment and human health. Please contact the installer or local authority for more information. Batteries must be removed from the remote controller and disposed of separately in accordance with relevant local and national legislation.
We recommend periodical maintenance.
In certain operating conditions, the inside of the air conditioner may get foul after several seasons of use, resulting in poor performance. It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user. For specialist maintenance, contact the service shop where you bought the air conditioner. The maintenance cost must be born by the user.

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Fault diagnosis.

FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC452A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the TIMER CANCEL button is held down for 5 seconds, a indication flashes on the temperature display section.
TIMER CANCEL button It cancels the timer setting.
2. Press the TIMER CANCEL button repeatedly until a continuous beep is produced. The code indication changes as shown below, and notifies with a long beep.
CODE 00 UA U0 U2 U4 A1 A5 A6 C4 C9 EA E1 E5 E6 E7 E8 F3 F6 H0 H6 H8 H9 J3 J6 L3 L4 L5 P4 MEANING NORMAL INDOOR-OUTDOOR UNIT COMBINATION FAULT REFRIGERANT SHORTAGE DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT) INDOOR PCB DEFECTIVENESS HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR FAN MOTOR FAULT FAULTY HEAT EXCHANGER TEMPERATURE SENSOR FAULTY SUCTION AIR TEMPERATURE SENSOR COOLING-HEATING SWITCHING ERROR CIRCUIT BOARD FAULT OL STARTED FAULTY COMPRESSOR START UP DC FAN MOTOR FAULT OVERCURRENT INPUT HIGH TEMPERATURE DISCHARGE PIPE CONTROL HIGH PRESSURE CONTROL (IN COOLING) SENSOR FAULT OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR DC CURRENT SENSOR FAULT FAULTY SUCTION AIR TEMPERATURE SENSOR FAULTY DISCHARGE PIPE TEMPERATURE SENSOR FAULTY HEAT EXCHANGER TEMPERATURE SENSOR ELECTRICAL PARTS HEAT FAULT HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK OUTPUT OVERCURRENT FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR

SYSTEM

INDOOR UNIT

OUTDOOR UNIT

1. A short beep and two consecutive beeps indicate non-corresponding codes. 2. To cancel the code display, hold the TIMER CANCEL button down for 5 seconds. The code display also cancel itself if the button is not pressed for 1 minute.
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LED ON OUTDOOR UNIT PCB

GREEN MICROCOMPUTER NORMAL LED-A RED
2MXS, 3MXS, 3MKS, 4MXS, 4MKS, 5MXS, 5MKS series
MALFUNCTION DETECTION LED1 LED2 LED3 LED4 LED5 NORMAL DIAGNOSIS CHECK INDOOR UNIT
HIGH PRESSURE PROTECTOR WORKED OR FREEZE-UP IN OPERATING UNIT OR STAND-BY UNIT
OVERLOAD RELAY WORKED OR HIGH DISCHARGE PIPE TEMPERATURE
FAULTY COMPRESSOR START INPUT OVERCURRENT
THERMISTOR OR CT ABNORMALITY