MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner Instruction Manual

: June 4, 2024
: Mitsubishi Electric

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MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner

SAFETY PRECAUTIONS
Meanings of symbols displayed on indoor unit and/or outdoor unit
WARNING
(Risk of ﬁre)
This unit uses a ﬂammable refrigerant. If refrigerant leaks and comes in contact with ﬁ re or heating part, it will create harmful gas and there is risk of ﬁre.

Read the OPERATING INSTRUCTIONS carefully before operation.
Service personnel are required to carefully read the OPERATING INSTRUCTIONS and INSTALLATION MANUAL before operation.
Further information is available in the OPERATING INSTRUCTIONS, INSTALLATION MANUAL, and the like.
Since rotating parts and parts which could cause an electric shock are used in this product, be sure to read these “Safety Precautions” before use.
Since the cautionary items shown here are important for safety, be sure to observe them.
After reading this manual, keep it together with the installation manual in a handy place for easy reference.

Marks and their meanings
WARNING : Incorrect handling could cause serious hazard, such as death, serious injury, etc. with a high probability.
CAUTION : Incorrect handling could cause serious hazard depending on the conditions.
WARNING
Do not connect the power cord to an intermediate point, use an extension cord, or connect multiple devices to a single AC outlet.

This may cause overheating, ﬁ re, or electric shock.
Make sure the power plug is free of dirt and insert it securely into the outlet.
A dirty plug may cause ﬁ re or electric shock.
Do not bundle, pull, damage, or modify the power cord, and do not apply heat or place heavy objects on it.
This may cause ﬁ re or electric shock.
Do not turn the breaker OFF/ON or disconnect/connect the power plug during operation.
This may create sparks, which can cause ﬁre.
After the indoor unit is switched OFF with the remote controller, make sure to turn the breaker OFF or disconnect the power plug.

Meanings of symbols used in this manual

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..
Risk of ﬁre

Do not expose your body directly to cool air for a prolonged length of time.

This could be detrimental to your health.

The unit should not be installed, relocated, disassembled, altered, or repaired by the user.

An improperly handled air conditioner may cause ﬁ re, electric shock, injury, or water leakage, etc. Consult your dealer.
If the power supply cord is damaged, it must be replaced by the manu-facturer or its service agent in order to avoid a hazard.

When installing, relocating, or servicing the unit, make sure that no substance other than the speciﬁ ed refrigerant (R32) enters the refrigerant circuit.

Any presence of foreign substance such as air can cause abnormal pressure rise and may result in explosion or injury.
The use of any refrigerant other than that speciﬁed for the system will cause mechanical failure, system malfunction, or unit breakdown. In the worst case, this could lead to a serious impediment to securing product safety.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of ex-perience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.

Do not insert your ﬁnger, a stick, or other objects into the air inlet or outlet.

This may cause injury, since the fan inside rotates at high speeds during operation.

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, stop operations and ventilate the room well and consult your dealer immediately. If a repair involves 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.

The indoor unit must be installed in rooms which exceed the ﬂoor space speciﬁed. Please consult your dealer.

This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons.

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 ﬂammable sprays on the unit.

This may cause a ﬁ re or deformation of the unit.

Do not expose pets or houseplants to direct airﬂow.

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 humidity (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 precision 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.

When the unit will be unused for a long time, disconnect the power plug or turn the breaker OFF.

The unit may accumulate dirt, which may cause overheating or ﬁ re.

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 ﬂuid comes in contact with your skin or clothes, wash them thoroughly with clean water.

If the battery ﬂuid 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, perform inspection and maintenance in addition to normal cleaning.

Dirt or dust in the unit may create an unpleasant odor, contribute 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 ﬁlters cause condensation in the air conditioner which will contribute to the growth of fungi such as mold. It is therefore recommended to clean air ﬁlters every 2 weeks. Before starting the operation, ensure that the horizontal vanes are in the closed posi-tion. If operation starts when the horizontal vanes are in the open position, they may not return to the correct position.

OPERATING INSTRUCTIONS

For installation

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 ﬁre.

Do not install the unit where ﬂammable 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 installation 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.

DISPOSAL
To dispose of this product, consult your dealer.
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.
Your 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 symbol 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!

NAME OF EACH PART

Indoor unit

MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner 01

Outdoor unit

MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner 02 Outdoor units may be different in appearance.

1 The manufacturing year and month are indicated on the spec name plate.

Remote controller

MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner 03 Only use the remote controller provided with the unit. Do not use other remote controllers. If two or more indoor units are installed in proximity to one another, an indoor unit that is not intended to be operated may respond to the remote controller.
Remote controller
When the remote controller is not used, place it near this unit.

PREPARATION BEFORE OPERATION

Before operation: Insert the power supply plug into the power outlet and/or turn the breaker on.

Installing the remote controller batteries

Remove the back lid.
Insert the negative pole of AAA alkaline batteries ﬁ rst.
Install the back lid.
Press RESET.

Note:

Make sure the polarity of the batteries is correct.
Do not use manganese batteries and leaking batteries. The remote controller could malfunction.
Do not use rechargeable batteries.
The battery replacement indicator lights up when the battery is running low. In about 7 days after the indicator starts lights up, the remote controller stops working.
Replace all batteries with new ones of the same type.
Batteries can be used for approximately 1 year. However, batteries with expired shelf lives last shorter.
Press RESET gently using a thin instrument.
If the RESET button is not pressed, the remote controller may not operate correctly.

SELECTING OPERATION MODES

Press to start the operation.
Press to select operation mode. Each press changes mode in the following order:
Press or to set the temperature. Each press raises or lowers the temperature by 1°C.
Press to stop the operation.

COOL mode
Enjoy cool air at your desired temperature.
Note:
Do not operate COOL mode at very low outside temperatures (less than -10°C). Water condensed in the unit may drip and wet or damage furni-ture, etc.
DRY mode
Dehumidify your room. The room may be cooled slightly. Temperature cannot be set during DRY mode.
HEAT mode
Enjoy warm air at your desired temperature.
FAN mode
Circulate the air in your room.
Note:
After COOL/DRY mode operation, it is recommended to operate in the FAN mode to dry inside the indoor unit.
Note:

Multi system operation

Two or more indoor units can be operated by one outdoor unit. When several indoor units are operated simultaneously, cooling/dry/fan and heating operations cannot be done at the same time. When COOL/DRY/FAN is selected with one unit and HEAT with another or vice versa, the unit selected last goes into standby mode.

Operation indicator lamp

The operation indicator lamp shows the operation state of the unit.

Indication	Operation state	Room temperature
The unit is operating to reach the set temperature	About 2°C or more away

from set temperature
| The room temperature is approaching the set temperature| About 1 to 2°C from set temperature
| Standby mode (only during multi system operation)| —

FAN SPEED AND AIRFLOW DIRECTION ADJUSTMENT

MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner 07 Fan speed
Press to select fan speed. Each press changes fan speed in the following order:

Two short beeps are heard from the indoor unit when set to AUTO.
Use higher fan speed to cool/heat the room quicker. It is recommended to lower the fan speed once the room is cool/warm.
Use lower fan speed for quiet operation.

Note:

Multi system operation

When several indoor units are operated simultaneously by one outdoor unit for heating operation, the temperature of the airﬂ ow may be low. In this case, it is recommended to set the fan speed to AUTO.
Up-down Airflow direction
Press to select air ﬂow direction. Each press changes airﬂow direction in the following order:
MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner 09 (AUTO) ………The vane is set to the most efﬁcient airﬂow direction. COOL/ DRY/FAN: horizontal position. HEAT: position (4).
(Manual) …….For efficient air conditioning, select the upper position for COOL/DRY, and the lower position for HEAT. If the lower position is selected during COOL/DRY, the vane automatically moves to the upward position after 0.5 to 1 hour to prevent any condensation from dripping.
(Swing) ………The vane moves up and down intermittently.

Two short beeps are heard from the indoor unit when set to AUTO.

Left-right Airflow direction

To change the horizontal air ﬂow direction.

Move the vertical vane manually before starting operation.
MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner 10 Note:
If the vertical vanes are adjusted while the unit is not operating, be sure to return the horizontal vanes to the original closed position.

ECONO COOL OPERATION

MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner 11 Swing air ﬂow (change of air ﬂow) makes you feel cooler than stationary air ﬂow. The set temperature and the air ﬂow direction are automatically changed by the microprocessor. It is possible to perform cooling operation with keeping comfort. As a result energy can be saved.
Press during COOL mode page 5 to start ECONO COOL operation.
The unit performs swing operation vertically in various cycle according to the temperature of the unit. Set temperature is set 2°C higher automatically.
Press again to cancel ECONO COOL operation.

Pressing also cancels ECONO COOL operation.

TIMER OPERATION (ON/OFF TIMER)

Press during operation to set the timer.
Each press changes timer mode in the following order:
Press to set the time of timer.
Each press increases or decreases the set time by 1 hour.

Press until “TIMER RELEASE” is selected to release timer.
Note:

ON and OFF timers can not be used in combination.
If power failure occurs while ON/OFF timer is set, see page 7 “Auto restart function”.

EMERGENCY OPERATION

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:

Operation indicator lamp

Set temperature : 24°C
Fan speed : Medium
Horizontal vane : Auto
Note:

The ﬁrst 30 minutes of operation is test run. Temperature control does not work, and fan speed is set to High.
In the emergency heating operation, the fan speed gradually rises to blow out warm air.

AUTO RESTART FUNCTION

If a power failure occurs or the main power is turned off during operation, “Auto restart function” automatically starts operation in the same mode as the one set with the remote controller just before the shutoff of the main power. When timer is set, timer setting is cancelled and the unit starts operation when power is resumed. If you do not want to use this function, please consult the service representative because the setting of the unit needs to be changed.

CLEANING

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 mild detergents.
Do not use a scrubbing brush, a hard sponge, or the like.
Do not soak or rinse the horizontal vane.
Do not use water hotter than 50°C.
Do not expose parts to direct sunlight, heat, or ﬁ re to dry.
Do not apply excessive force on the fan as it may cause cracks or breakage.

Front panel
MITSUBISHI ELECTRIC MSZ-HR50VF Wall Air Conditioner 16

Lift the front panel until a “click” is heard.
Hold the hinges and pull to remove as shown in the illustration above.
- Wipe with a soft dry cloth or rinse it with water.
- Do not soak it in water for more than two hours.
- Dry it well in shade before installing it.
Install the front panel by following the removal procedure in reverse. Close the front panel securely and press the positions indicated by the arrows.

(Silver-ionized air puriﬁer ﬁlter, option)
Every 3 months:

Remove dirt by a vacuum cleaner.

When dirt cannot be removed by vacuum cleaning:

Soak the ﬁlter and its frame in lukewarm water before rinsing it.
After washing, dry it well in shade. Install all tabs of the air ﬁlter.

Every year:

Replace it with a new air cleaning ﬁ lter for best performance.
Parts Number MAC-2370FT-E

Important

Clean the ﬁlters regularly for best performance and to reduce power consumption.
Dirty ﬁlters 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 528/2012

MODEL NAME| Treated Article (Parts name)| Active Substances
(CAS No.)| Property| Instruction for Use
(Safe handling information)
---|---|---|---|---
MSZ-HR25/35/42/50VF| FILTER| TBZ (148-79-8)| Antimold|

Use this product in line with the instruction manual indications and for the intended pur- pose 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.

WHEN YOU THINK THAT TROUBLE HAS OCCURRED
Even 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 points

Indoor Unit
The unit cannot be operated.|

Is the breaker turned on?
Is the power supply plug connected?
Is the ON timer set? Page 7

The horizontal vane does not move.|

Are the horizontal vane and the vertical vane installed correctly?
Is the fan guard deformed?

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 moisture in the air inside the room, and it turns into mist.

The swing operation of the HORI- ZONTAL VANE is suspended for a while, then restarted.|

This is for the swing operation of the HORIZON- TAL VANE to be performed normally.

The airﬂow direction changes during operation.
The direction of the horizontal vane cannot be adjusted with the remote controller.|

When the unit is operated in COOL or DRY mode, if the operation continues with air blowing down for 0.5 to 1 hour, the direction of the airﬂow is automatically set to upward position to prevent water from condensing and dripping.
In the heating operation, if the airﬂow temperature is too low or when defrosting is being done, the horizontal vane is automatically set to horizontal position.

The operation stops for about 10 minutes in the heating operation.|

Outdoor unit is in defrost.
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, but hasn’t received sign from 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 controller just before the shutoff of the main power. Refer to “Auto restart function”. Page 7

In COOL/DRY mode, when the room temperature reaches near the set temperature, the outdoor unit stops, then the indoor unit operates at low speed.|

When the room temperature deviates from the set temperature, the indoor fan starts running according to the settings on the remote control- ler.

The indoor unit discolors over time.|

Although plastic turns yellow due to the inﬂuence of some factors such as ultraviolet light and temperature, this has no effect on the product functions.

Multi system
The indoor unit which is not operating becomes warm and a sound, similar to water ﬂowing, is heard from the unit.|

A small amount of refrigerant continues to ﬂow into the indoor unit even though it is not operating.

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.

Outdoor Unit
The fan of the outdoor unit does not rotate even though the com- pressor 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 sufﬁcient 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 ice forming 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 controller
The 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? Page 4
Is the polarity (+, -) of the batteries correct? Page 4
Are any buttons on the remote controller of other electric appliances being pressed?

Symptom	Explanation & Check points

Does not cool or heat
The room cannot be cooled or heated sufﬁciently.|

Is the temperature setting appropriate? Page 5
Is the fan setting appropriate? Please change fan speed to High or Super High. Page 6
Are the ﬁlters clean? Page 8
Is the fan or heat exchanger of the indoor unit clean? Page 8
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 sufﬁciently.|

When a ventilation fan or a gas cooker is used in a room, the cooling load increases, resulting in an insufﬁcient cooling effect.
When the outside temperature is high, the cooling effect may not be sufﬁcient.

The room cannot be heated sufﬁciently.|

When the outside temperature is low, the heating effect may not be sufﬁcient.

Air does not blow out soon in the heating operation.|

Please wait as the unit is preparing to blow out warm air.

Airﬂow
The air from the indoor unit smells strange.|

Are the ﬁlters clean? Page 8
Is the fan or heat exchanger of the indoor unit clean? Page 8
The unit may suck in an odor adhering to the wall, carpet, furniture, cloth, etc. and blow it out with the air.

Sound
Cracking sound is heard.|

This sound is generated by the expansion/con- traction of the front panel, etc. due to change in temperature.

“Burbling” sound 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 ﬂowing 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 ﬂowing is heard.|

This is the sound of refrigerant or condensed water ﬂowing in the unit.

Hissing sound is sometimes heard.|

This is the sound when the ﬂow of refrigerant inside the unit is changed.

In the following cases, stop using the air conditioner and consult your dealer.

When water leaks or drips from the indoor unit.
When the 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 ﬂuorescent lamp (inverter-type ﬂuorescent lamp, etc.) is used.
Operation of the air conditioner interferes with radio or TV reception. An ampliﬁer may be required for the affected device.
When an abnormal sound is heard.
When any refrigerant leakage is found.

WHEN THE AIR CONDITIONER IS NOT GOING TO BE USED FOR A LONG TIME

Operate by COOL mode with the highest temperature set or FAN mode for 3 to 4 hours. Page 5
- This dries the inside of the unit.
- Moisture in the air conditioner contributes to favorable conditions for growth of fungi, such as mold.
Press to stop the operation.
Turn off the breaker and/or disconnect the power sup- ply plug.
Remove all batteries from the remote controller.

When using the air conditioner again:

Clean the air ﬁlter. Page 8
Check that the air inlet and outlet of the indoor and outdoor units are not blocked.
Check that the earth is connected correctly.
Refer to the “PREPARATION BEFORE OPERATION”, and follow the instructions. Page 4

INSTALLATION PLACE AND ELECTRICAL WORK

Installation place

Avoid installing the air conditioner in the following places.

Where there is much machine oil.
Salty places such as the seaside.
Where sulﬁde gas is generated such as hot spring, sewage, waste water.
Where oil is splashed or where the area is ﬁ lled with oily smoke (such as cook-ing areas and factories, in which the properties of plastic could be changed and damaged).
Where there is high-frequency or wireless equipment.
Where the air from the outdoor unit air outlet is blocked.
Where the operation sound or air from the outdoor unit bothers the house next door.
The mounting height of indoor unit 1.8 m to 2.3 m is recommended. If it is impossible, please consult your dealer.
Do not operate the air conditioner during interior construction and ﬁnishing work, or while waxing the ﬂoor. Before operating the air conditioner, ventilate the room well after such work is performed. Otherwise, it may cause volatile elements to adhere inside the air conditioner, resulting in water leakage or scattering of dew.
This equipment should be installed and operated with a minimum distance of 20 cm between the device and the user or bystanders.
The indoor unit must be installed in rooms which exceed the ﬂoor space speciﬁed. Please consult your dealer.

Electrical work

Provide an exclusive circuit for the power supply of the air conditioner.
Be sure to observe the breaker capacity.

If you have any questions, consult your dealer.

SPECIFICATIONS

Model| Indoor| MSZ-HR25VF| MSZ-HR35VF| MSZ-HR42VF| MSZ-HR50VF
---|---|---|---|---|---
Outdoor| MUZ-HR25VF| MUZ-HR35VF| MUZ-HR42VF| MUZ- HR50VF
Function| Cooling| Heating| Cooling| Heating| Cooling| Heating| Cooling| Heating
Power supply| ~ /N, 230 V, 50 Hz
Capacity| kW| 2.5| 3.15| 3.4| 3.6| 4.2| 4.7| 5.0| 5.4
Input| kW| 0.80| 0.85| 1.21| 0.975| 1.34| 1.30| 2.05| 1.55
Weight| Indoor| kg| 8.5| 9
Outdoor| kg| 23| 24| 34| 35
Refrigerant ﬁlling capacity (R32)| kg| 0.40| 0.45| 0.70| 0.80
IP code| Indoor| IP 20
Outdoor| IP 24

Permissible excessive

operating pressure

| LP ps| MPa| 2.77
HP ps| MPa| 4.17

Noise level (SPL)

|

Indoor (Super High/

High/Med./Low)

| dB(A)| 43/37/30/21| 43/37/30/21| 46/38/31/22| 44/37/30/21| 44/39/34/24| 46/40/32/24| 45/40/36/28| 47/41/34/27
Outdoor| dB(A)| 50| 50| 51| 51| 50| 51| 50| 51