MFZKT25VG - Air Conditioning MITSUBISHI - Free user manual and instructions

USER MANUAL MFZKT25VG MITSUBISHI

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, fi re, 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. If any refrigerant leakage is found, ventilate the room well and consult your dealer immediately. Do not turn the breaker OFF. If a repair in-volves recharging the unit with refrigerant, ask the service technician for details.• The refrigerant used in the air conditioner is not harmful. Normally, it does not leak. However, if refrigerant leaks and comes in contact with fi re or heating part of such a fan heater, kerosene heater, or cooking stove, it will create harmful gas and there is risk of fi re.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 fi re.• The appliance shall be stored in a room without continuously operating ignition sources (for example: open fl ames, an operating gas appliance or an operating electric heater).• Be aware that refrigerants may not contain an odour.• Do not use means to accelerate the defrosting process or to clean the appliance, other than those recommended by the manufacturer.• Do not pierce or burn.This unit should be installed in rooms which exceed the fl oor space specifi ed in outdoor unit installation manual.• Refer to outdoor unit installation manual.This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for com-mercial use by laypersons.

EN-1 RH79A019H03_01En.indd 1 2020/03/06 13:25:24Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and components which can be recycled and/or reused.This symbol means that electrical and electronic equipment, batteries and accumulators, at their end-of-life, should be disposed of separately from your household waste.If a chemical symbol is printed beneath the symbol (Fig. 1), this chemical sym-bol means that the battery or accumulator contains a heavy metal at a certain concentration. This will be indicated as follows: Hg: mercury (0.0005%), Cd: cadmium (0.002%), Pb: lead (0.004%) In the European Union there are separate collection systems for used electrical and electronic products, batteries and accumulators.Please, dispose of this equipment, batteries and accumulators correctly at your local community waste collection/recycling centre.Please, help us to conserve the environment we live in! DISPOSAL Fig. 1 Note: This symbol mark is for EU countries only.This symbol mark is according to the directive 2012/19/EU Article 14 Information for users and Annex IX, and/or to the directive 2006/66/EC Article 20 Information for end-users and Annex II.To dispose of this product, consult your dealer. WARNING 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, fi re, or electric shock.Provide a dedicated power supply for the air conditioner.• A non-dedicated power supply may cause overheating or fi re.Do not install the unit where fl ammable gas could leak.• If gas leaks and accumulates around the outdoor unit, it may cause an explosion.Earth the unit correctly.• Do not connect the earth wire to a gas pipe, water pipe, lightning rod, or a telephone earth wire. Improper earthing may cause electric shock. CAUTION Install an earth leakage breaker depending on the installa-tion location of the air conditioner (such as highly humid areas).• If an earth leakage breaker is not installed, it may cause electric shock.Ensure that the drain water is properly drained.• If the drain passage is improper, water may drip down from the indoor/outdoor unit, wetting and damaging the furniture.In case of an abnormal condition Immediately stop operating the air conditioner and consult your dealer. For installation SAFETY PRECAUTIONS CAUTION Do not touch the air inlet or the aluminum fi ns of the indoor/outdoor unit.• This may cause injury.Do not use insecticides or fl ammable sprays on the unit.• This may cause a fi re or deformation of the unit.Do not expose pets or houseplants to direct airfl ow.• This may cause injury to the pets or plants.Do not place other electric appliances or furniture under the indoor/outdoor unit.• Water may drip down from the unit, which may cause damage or malfunction.Do not leave the unit on a damaged installation stand.• The unit may fall and cause injury.Do not step on an unstable bench to operate or clean the unit.• This may cause injury if you fall down.Do not pull the power cord.• This may cause a portion of the core wire to break, which may cause overheating or fi re.Do not charge or disassemble the batteries, and do not throw them into a fi re.• This may cause the batteries to leak, or cause a fi re or explosion.Do not operate the unit for more than 4 hours at high hu-midity (80% RH or more) and/or with windows or outside door left open.• This may cause the water condensation in the air conditioner, which may drip down, wetting or damaging the furniture. • The water condensation in the air conditioner may contribute to growth of fungi, such as mold.Do not use the unit for special purposes, such as storing food, raising animals, growing plants, or preserving preci-sion devices or art objects.• This may cause deterioration of quality, or harm to animals and plants.Do not expose combustion appliances to direct airfl ow.• This may cause incomplete combustion.Never put batteries in your mouth for any reason to avoid accidental ingestion.• Battery ingestion may cause choking and/or poisoning.Before cleaning the unit, switch it OFF and disconnect the power plug or turn the breaker OFF.• This may cause injury, since the fan inside rotates at high speeds during operation.Replace all batteries of the remote controller with new ones of the same type.• Using an old battery together with a new one may cause overheating, leakage, or explosion.If the battery fl uid comes in contact with your skin or clothes, wash them thoroughly with clean water.• If the battery fl uid comes in contact with your eyes, wash them thoroughly with clean water and immediately seek medical attention.Ensure that the area is well-ventilated when the unit is operated together with a combustion appliance.• Inadequate ventilation may cause oxygen starvation.Turn the breaker OFF when you hear thunder and there is a possibility of a lightning strike.• The unit may be damaged if lightning strikes.After the air conditioner is used for several seasons, per-form inspection and maintenance in addition to normal cleaning.• Dirt or dust in the unit may create an unpleasant odor, con-tribute to growth of fungi, such as mold, or clog the drain passage, and cause water to leak from the indoor unit. Consult your dealer for inspection and maintenance, which require specialized knowledge and skills.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 fl ower vase, on it.• This may cause fi re 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. IMPORTANT Dirty fi lters cause condensation in the air conditioner which will con-tribute to the growth of fungi such as mold. It is therefore recommended to clean air fi lters every 2 weeks.To use this unit correctly and safely, be sure to read these operating instructions before use.

EN-2 RH79A019H03_01En.indd 2 2020/03/06 13:25:25Air inlet (back and side)Refrigerant pipingAir outletDrain outlet Outdoor unit Outdoor units may be different in appearance.*1 The manufacturing year and month is indicated on the spec name plate.Spec name plate *1Operation indicator lamp 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:Set temperature : 24°CFan speed : MediumHorizontal vane : AutoEmergency COOLEmergency HEAT Stop Before operation: Insert the power supply plug into the power outlet and/or turn the breaker on. Installing the remote controller batteries

Press RESET. Setting current time

Press CLOCK. Press CLOCK again. Press either the TIME button or the TIMER buttons to set the time. Each press changes the clock 1 minute forward/backward (10 minutes when pressed longer). Press the DAY button to set the day.

Display and operation section (When the front panel is opened)Operation indicator lampEmergency operation switchRemote control receiving sectionAir outlet

*1 The manufacturing year and month is indicated on the spec name plate. EN-3

RH79A019H03_01En.indd 3 2020/03/06 13:25:26Remote controller Signal transmitting sectionDistance of signal : About 6 mBeep(s) is (are) heard from the indoor unit when the signal is received.Operation display sectionOFF/ON(stop/operate) buttonTemperature buttonsOperation select button ECONO COOL buttonFAN speed control buttonVANE control buttonTIME, TIMER set buttons forward button backward buttonCLOCK buttonRESET button Lid Slide the lid down to open the remote controller. Slide it down further to get to the weekly timer buttons.i-save button WEEKLY TIMERset buttons OFF/ON (stop/operate) button Operation select button Temperature buttons FAN speed control button VANE control button Press to select vertical airfl ow direction. Each press will change airfl ow direction in the following order:

• Two short beeps will be heard from the indoor unit when set to AUTO.• Moving the horizontal vane/multi-flow vane manually can cause trouble.• The horizontal vane/multi-flow vane automatically moves in certain intervals to determine its position, and then it returns to the set posi-tion.• When the air outlet is switched between 1 FLOW and 2 FLOW, the horizontal vanes may move and change their positions. VANE control button Press to select the air outlet(s). When 2 FLOW is selected, air blows from the top and the front of the unit. When 1 FLOW is selected, air blows only from the top of the unit. The multi-flow vane is automatically set to the appropriate position. Even if 2 FLOW is selected, air will blow only from the top of the unit in the following conditions:• During COOL/DRY: The room temperature is close to set tempera-ture. The air conditioner has operated for 0.5 to 1 hour.• During HEAT: The air flow temperature is low. (During defrosting operation, start of operation, etc.) Press to enter the weekly timer setting mode. Press and to select setting day and number. Press , , and to set ON/OFF, time, and tem- perature. Press to complete and transmit the weekly timer setting. Press to turn the weekly timer ON. ( lights.) Press again to turn the weekly timer OFF. ( goes out.) WEEKLY TIMER set buttons ECONO COOL button The set temperature and the airfl ow direction are automatically changed by the microprocessor. i-save button A simplifi ed 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.

PREPARATION BEFORE OPERATION

(ON timer) : The unit turns ON at the set time. (OFF timer) : The unit turns OFF at the set time. Press (forward) and (backward) to set the time of timer. TIME, TIMER set buttons Change the time forward/backward (AUTO) (COOL) (DRY) (HEAT) (FAN) (AUTO) (Silent) (Low) (Med.) (High) (AUTO) (1) (2) (3) (4) (SWING) (2 FLOW) (1 FLOW) EN-4 ● OPERATING INSTRUCTIONS ●

RH79A019H03_01En.indd 4 2020/03/06 13:25:27CLEANING Front panel 1. Push down the tab on the both sides of the unit to open the front panel. 2. Pull the front panel toward you to remove it. 3. Open the front panel completely and then remove it.• Wipe with a soft dry cloth or wash it with water.• Do not soak it in water for more than two hours.• Dry it well in shade before installing it.4. Install the front panel by following the removal procedure in reverse. Air cleaning fi lter (Silver-ionized air purifi er fi lter) Back side of air fi lter Clean every 3 months:• Remove dirt by a vacuum cleaner.When dirt cannot be removed by vacuum cleaning:• Soak the fi lter and its frame in lukewarm water before rinsing it. (Diluted mild detergents can be used when dirt cannot be removed.)• After washing, dry it well in shade. Every year:• Replace it with a new air cleaning fi lter for best performance.• Parts Number MAC-2370FT-E Air fi lter (Air purifying fi lter)

• Clean every 2 weeks • Remove dirt by a vacuum cleaner, or rinse with water.• After washing with water, dry it well in shade. Important• Clean the fi lters regularly for best performance and to re-duce power consumption.• Dirty fi lters cause condensation in the air conditioner which will contribute to the growth of fungi such as mold. It is therefore recommended to clean air fi lters every 2 weeks.This information is based on REGULATION (EU) No 528/2012MODEL NAMETreated Article(Parts name)Active Substances(CAS No.)PropertyInstruction for Use(Safe handling information)MFZ-KT25/35/50/60VG FILTERSilver sodium hydrogen zirconium phosphate(265647-11-8)Antibacterial Antimold• Use this product in line with the instruction manual indications and for the intended purpose only.• Do not put into mouth. Keep away from children.Silver zinc zeolite (130328-20-0) Antibacterial• Use this product in line with the instruction manual indications and for the intended purpose only.• Do not put into mouth. Keep away from children. MAC-2370FT-E FILTER Silver zinc zeolite (130328-20-0) Antibacterial
• Use this product in line with the instruction manual indications and for the intended purpose only.• Do not put into mouth. Keep away from children. 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 neutral detergents.• Do not expose parts to direct sunlight, heat, or fl ames to dry.• Do not use water hotter than 50°C.• Do not use a scrubbing brush, a hard sponge, or the like.• Do not soak or rinse the horizontal vane.

EN-5 RH79A019H03_01En.indd 5 2020/03/06 13:25:28Even if these items are checked, when the unit does not recover from the trouble, stop using the air conditioner and consult your dealer.Symptom Explanation & Check pointsIndoor UnitThe unit cannot be operated. • Is the breaker turned on?• Is the power supply plug connected?• Is the ON timer set?The unit cannot be operated for about 3 minutes when restarted.• This protects the unit according to instructions from the microprocessor. Please wait.Mist is discharged from the air outlet of the indoor unit.• The cool air from the unit rapidly cools mois-ture in the air inside the room, and it turns into mist.The swing operation of the HORIZONTAL VANE is suspended for a while, then restarted.• This is for the swing operation of the HORIZON-TAL VANE to be performed normally.The air fl ow direction changes during operation.The direction of the horizontal vane/multi-fl ow vane cannot be adjusted with the remote controller.• In the heating operation, if the air fl ow tem-perature is too low or when defrosting is being done, the horizontal vane is automatically set to vertical position. The multi-fl ow vane is set to the closed position.• When the air conditioner is operated in COOL or DRY mode, if the operation continues with air blowing horizontally for 1 hour, the direction of the air fl ow is automatically set to position (1) to prevent condensed water from dropping. The multi-fl ow vane is set to the closed position.• The horizontal vane and the multi-fl ow vane automatically moves in certain intervals to determine its position, and then it returns to the set position.The operation is stopped for about 10 minutes in the heating operation.• Defrosting of the outdoor unit is being done. Since this is completed in max.10 minutes, please wait. (When the outside temperature is too low and humidity is too high, frost is formed.)The unit starts operation by itself when the main power is turned on, though it isn’t oper-ated with the remote controller.• These models are equipped with an auto restart function. When the main power is turned off without stopping the unit with the remote controller and is turned on again, the unit starts operation automatically in the same mode as the one set with the remote control-ler just before the shutoff of the main power. Refer to “Auto restart function”. The multi-fl ow vane opens and closes automatically.• The multi-fl ow vane is automatically control-led by a microcomputer according to the air fl ow temperature and operation time of the air conditioner. The indoor unit which is not operating becomes warm and a sound, similar to water fl owing, is heard from the unit.• A small amount of refrigerant continues to fl ow into the indoor unit even though it is not operat- ing. The indoor unit discolors over time.• Although plastic turns yellow due to the infl uence of some factors such as ultraviolet light and temperature, this has no effect on the product functions.Outdoor Unit (Multi system)When heating operation is selected, operation does not start right away.• When operation is started during defrosting of outdoor unit is done, it takes a few minutes (max. 10 minutes) to blow out warm air.The fan of the outdoor unit does not rotate even though the compressor is running. Even if the fan starts to rotate, it stops soon.• When the outside temperature is low during cooling operation, the fan operates intermittently to maintain suffi cient cooling capacity.Water leaks from the outdoor unit.• During COOL and DRY operations, pipe or pipe connecting sections are cooled and this causes water to condense.• In the heating operation, water condensed on the heat exchanger drips down.• In the heating operation, the defrosting operation makes water frozen on the outdoor unit melt and drip down.White smoke is discharged from the outdoor unit.• In the heating operation, vapor generated by the defrosting operation looks like white smoke.Remote controllerThe display on the remote controller does not appear or it is dim. The indoor unit does not respond to the remote control signal.• Are the batteries exhausted? • Is the polarity (+, -) of the batteries correct?• Are any buttons on the remote controller of other electric appliances being pressed? WHEN YOU THINK THAT TROUBLE HAS OCCURRED Symptom Explanation & Check pointsDoes not cool or heatThe room cannot be cooled or heated suffi ciently.• Is the temperature setting appropriate? • Is the fan setting appropriate? Please change fan speed to High or Super High.• Is the air outlet selection is set to 1 FLOW? Set it to 2 FLOW.• Is the fi lter clean?• Is the fan or heat exchanger of the indoor unit clean?• Are there any obstacles blocking the air inlet or outlet of the indoor or outdoor unit?• Is a window or door open?• It may take a certain time to reach the setting temperature or may not reach that depending on the size of the room, the ambient temperature, and the like.The room cannot be cooled suffi ciently.• When a ventilation fan or a gas cooker is used in a room, the cooling load increases, resulting in an insuffi cient cooling effect.• When the outside temperature is high, the cooling effect may not be suffi cient.The room cannot be heated suffi ciently.• When the outside temperature is low, the heat-ing effect may not be suffi cient.Air does not blow out soon in the heating operation.• Please wait as the unit is preparing to blow out warm air.Airfl owThe air from the indoor unit smells strange.• Is the fi lter clean?• Is the fan or heat exchanger of the indoor unit clean?• The unit may suck in an odor adhering to the wall, carpet, furniture, cloth, etc. and blow it out with the air.SoundCracking sound is heard. • This sound is generated by the expansion/contraction of the panel, etc. due to change in temperature.The sound as burbling is heard. • This sound is heard when the outside air is absorbed from the drain hose by turning on the range hood or the ventilation fan, making water fl owing in the drain hose to spout out. This sound is also heard when the outside air blows into the drain hose in case the outside wind is strong.Mechanical sound is heard from the indoor unit.• This is the switching sound in turning on/off the fan or the compressor.The sound of water fl owing is heard.• This is the sound of refrigerant or condensed water fl owing in the unit.Hissing sound is sometimes heard.• This is the sound when the fl ow of refrigerant inside the unit is switched.The sound of motor and swirling sound is heard from the indoor unit.• This is the sound of water condensed during COOL/DRY operation being drained from the indoor unit.• Sound of water draining may also be heard from indoor units which are not operating. (The sound will stop automatically. Please wait.)TimerWeekly timer does not operate according to settings.• Is the ON/OFF timer set?• Transmit the setting information of the weekly timer to the indoor unit again. When the informa-tion is successfully received, a long beep will sound from the indoor unit. If information fails to be received, 3 short beeps will be heard. Ensure information is successfully received. • When a power failure occurs and the main power turns off, the indoor unit built-in clock will be incorrect. As a result, the weekly timer may not work normally. Be sure to place the remote controller where the signal can be received by the indoor unit.The unit starts/stops the opera-tion by itself.• Is the weekly timer set? Manual Download EN-6 ● OPERATING INSTRUCTIONS ●

RH79A019H03_01En.indd 6 2020/03/06 13:25:29In the following cases, stop using the air conditioner and consult your dealer.• When water leaks or drips from the indoor unit.• When the left 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 fl uorescent lamp (inverter-type fl uorescent lamp, etc.) is used.

• Operation of the air conditioner interferes with radio or TV reception. An amplifi er may be required for the affected device.

2. As for specifi cations, please confi rm your dealer and/or refer to the

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EC DECLARATION OF CONFORMITY