Mitsubishi Electric MSY-GW25VFD, Operating Instructions Manual, Page: 2 / 16

En-1
● OPERATING INSTRUCTIONS ●
S
AFETY PRECAUTIONS
C
ONTENTS
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SAFETY PRECAUTIONS 1
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NAME OF EACH PART 3
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PREPARATION BEFORE OPERATION 4
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SELECTING OPERATION MODES 5
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FAN SPEED AND AIRFLOW DIRECTION ADJUSTMENT 6
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LONG OPERATION 7
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POWERFUL OPERATION 7
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I-SAVE OPERATION 7
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ECONO COOL OPERATION 8
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TIMER OPERATION (ON/OFF TIMER) 8
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WEEKLY TIMER OPERATION 9
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DEMAND RESPONSE AND INDOOR UNIT OPERATION 10
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EMERGENCY OPERATION 10
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AUTO RESTART FUNCTION 10
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CLEANING 11
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WHEN YOU THINK THAT TROUBLE HAS OCCURRED 12
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WHEN THE AIR CONDITIONER IS NOT GOING TO BE USED FOR A LONG TIME 13
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INSTALLATION PLACE AND ELECTRICAL WORK 13
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SPECIFICATIONS 13
• 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.
• Be sure to receive a guarantee card from your dealer and check that the
purchased date and shop name, etc. are entered correctly.
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.
Meanings of symbols used in this manual
: Be sure not to do.
: Be sure to follow the instruction.
: Never insert your fi nger 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 fi re.
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 fi re.
• After the indoor unit is switched OFF with the remote controller,
make sure to turn the breaker OFF or disconnect the power plug.
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
manufacturer 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 abnor-
mal pressure rise and may result in explosion or injury.
• The use of any refrigerant other than that specifi ed for the system
will cause mechanical failure, system malfunction, or unit break-
down. 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 experience and knowledge, unless they have been
given supervision or instruction concerning use of the appli-
ance 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 fi nger, 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 malfunc-
tion, fi re, or electric shock. In this case, consult your dealer.
WARNING
(Risk of fi re)
This unit uses a fl ammable refrigerant.
If refrigerant leaks and comes in contact with fi re or heating part, it will create harmful gas and there is risk of fi re.
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.
Meanings of symbols displayed on indoor unit and/or outdoor unit
DG79A01WH01_en.indd 1 2022/02/18 17:17:46