Mitsubishi Heavy Industries STM25ZE User manual

This air conditioner complies with EMC Directive 89/336/EEC, LV
Directive 73/23/EEC.
RJH012A011.EN
ENGLISH
STM25ZE/ZF-S
STM35ZE/ZF-S
STM50ZE/ZF-S
STM60ZE/ZF-S
AIR-CONDITIONING & REFRIGERATION SYSTEMS HEADQUARTERS
16-5, 2-Chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan
Fax: [phone]
MITSUBISHI HEAVY INDUSTRIES EUROPE, LTD.
AIR-CONDITIONER DIVISION
3rd Floor Thavies Inn House 3-4 Holborn Circus London EC1N 2HA, ENGLAND
Phone: [phone]
Fax: [phone]
USER’S MANUAL
AIR-CONDITIONER
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Thank you for purchasing a MITSUBISHI HEAVY INDUSTRIES, LTD. Air-Conditioner. To
get the best long-lasting performance, read and follow this User’s Manual carefully before
using your air-conditioner. After reading, please store the Manual in a safe place and refer
to it for operational questions or in the event of any irregularities.
This air-conditioner is intended for domestic use.
An alternative refrigerant (R410A) is used in this air-conditioner. When asking the
dealer for service or inspection and maintenance, explain the dealer about this matter.
Contents
Safety precautions......................................................................................................................... 2
Choice of operations and features ................................................................................................ 4
Name of each part and its function ............................................................................................... 5
Operation and indication section for remote control .................................................................... 7
AUTO mode operation procedure ................................................................................................ 8
Temperature adjustment during AUTO ........................................................................................ 8
COOL/HEAT/DRY mode operation procedure ........................................................................... 9
Concerning HIGH POWER operation ......................................................................................... 9
Concerning ECONOMY operation .............................................................................................. 9
Air flow direction adjustment procedure .................................................................................... 10
About FAN SPEED .................................................................................................................... 10
OFF-TIMER operation procedure .............................................................................................. 11
ON-TIMER operation procedure................................................................................................ 11
PROGRAM TIMER operation procedure .................................................................................. 12
About TIMER operation............................................................................................................. 12
Present time setting procedure .................................................................................................... 12
Emergency run operation............................................................................................................ 13
Remote control handling procedure ........................................................................................... 13
When the operation fails with the remote control ...................................................................... 14
Operating hints ........................................................................................................................... 14
Maintenance................................................................................................................................ 15
Has the unit been installed correctly? ......................................................................................... 16
About the Multiple Air-conditioner ............................................................................................ 16
Troubleshooting .......................................................................................................................... 17
Please remember! ....................................................................................................................... 17
When to contact your distributor without delay ......................................................................... 18
Air-conditioner operating conditions.......................................................................................... 19
Power Blackout Auto Restart Function ...................................................................................... 19
Characteristics of HEAT mode operation .................................................................................. 19
Self diagnosis function ............................................................................................................... 20
ENGLISH
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Don’t swing from the system.
If the system falls down,
you may get injured.
Do not insert anything into the air inlet.
This may cause injury, as the internal fan rotates at
high speed.
Do not expose yourself to the cooling
air for prolonged periods.
This could affect your physical condition and cause
health problems.
LPG
Safety precautions
•Before starting to use the system, please read these “Safety precautions” carefully to ensure proper operation of the system.
•The safety precautions are classified as “ DANGER” and “ CAUTION”. Precautions as shown in the column “ DANGER” indicate that
improper handling could have dramatic consequences like death, serious injury, etc. Nevertheless, even precautions as shown in the column
“CAUTION” might pose a serious problem, depending on the circumstances. Please observe these precautions with great care, since they are
essential to your safety.
•Symbols which appear frequently in the text have the following meaning:
•When you have read the instruction manual, please keep it near at hand for consultation. If someone else takes over as operator, make certain that the
manual is also passed on to the new operator.
Strictly prohibited Provide positive earthing
Make sure that the system has been properly earthed.
Earth cables should never be connected to a gas pipe, municipal water pipe, light-
ning conductor or telephone earth cable. Incorrect installation of the earth cable
may produce an electric shock.
Depending on the place of installation, a circuit breaker may
be necessary.
If you don’t fit a circuit breaker, you may cause an electric shock.
Do not install near places where inflammable gas may leak.
Gas leaks may cause fire.
Make sure that you drain the hose properly, so that all the
water has dripped out.
Negligence may cause flooding in the room resulting in wet furniture.
Observe instructions with
great care
❚INSTALLATION PRECAUTIONS
DANGER
CAUTION
❚OPERATION PRECAUTIONS
DANGER
The system is meant for domestic, residential etc. use.
If used in inferior environments, such as an engineering workplace, the equipment
may function poorly.
The system must be installed by your dealer or a qualified pro-
fessional.
It is not advisable to install the system yourself, as faulty handling may cause leak-
age of water, electric shock or fire.
Store the remote control out of reach
of infants.
Failure to observe this may result in the batteries
being swallowed or other accidents.
Only use approved fuses.
Use of steel or copper wire instead of an approved
fuse is strictly forbidden, as it may cause a breakdown
or fire.
CAUTION
Do not handle the switches with wet
hands.
This may cause an electric shock.
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Do not place anything containing wa-
ter, like vases, on top of the unit.
Water entering the unit could damage the insula-
tion and therefore cause an electric shock.
The system should only be used for its original purpose
and not for anything else like, for instance, preservation of
food, plants or animals, precision devices or works of art.
The system is only intended for use in ordinary domestic rooms.
Any other use of the system may damage the quality of food, etc.
Do not wash the air-conditioner with wa-
ter.
This could cause an electric shock.
You should not expose any combus-
tion appliance directly to the air
stream of the air-conditioner.
The appliance may then work inadequately.
Do not place a combustible insecticide
or paint spray near the blower, nor aim it
directly at the system.
This may result in a fire.
Do not install the system at a place
where the air stream of the blower is
aimed directly at plants or animals.
This will damage their health.
Do not sit on the outdoor unit nor put
anything on it.
If the unit falls down or things drop off it, people
could get hurt.
After a long period of use, check the unit's
support structure from time to time.
If you don't repair any damage straightaway, the
unit may fall down and cause personal injury.
Stand firmly on a stepladder or other
stable object when removing the inlet
grill and filters.
Failure to observe this may result in injury through
insecure objects toppling over.
Consult your dealer for repairs to the
system.
Wrong repairs could cause an electric shock, fire, etc.
If you notice anything abnormal (smell of
burning, etc.), stop the system, turn off the
power switch and consult your dealer.
Continued use of the system in abnormal circum-
stances may result in malfunctioning, electric shock,
fire, etc.
If the air-conditioner is moved else-
where, contact your dealer or a pro-
fessional fitter.
Faulty installation may cause water leakage, elec-
tric shock, fire, etc.
❚PRECAUTIONS FOR TRANSFER OR REPAIRS
DANGER
Safety precautions
CAUTION
Do not place objects near the outdoor
unit or allow leaves to gather around the
unit.
If there are objects or leaves around the outdoor unit,
small animals may enter unit and contact electrical
parts resulting in break down, emission of smoke or
flame.
Do not touch the aluminum fins on the
air heat exchanger.
Failure to observe this may result in injury.
If you operate the system together with
a combustion appliance, you must regu-
larly ventilate the indoor air.
Insufficient ventilation may cause accidents due to
oxygen deficiency.
When you clean the system, stop the
unit and turn off the power switch.
Never clean the unit while the internal fan is rotating.
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Features
Page 10
Page 11,12
There are two timers, for ON and OFF.
They can be set as desired.
Page 12
When using the timer to switch on, the sys-
tem become operational shortly before the
set time, depending on the room tempera-
ture so that the desired temperature is
reached at the set time.
Choice of operations and features
Amenity facility TIMER procedure
•AIR SCROLL
This function sets the unit at the most suitable angle
for blowing, imitating a natural breeze.
•MEMORY FLAP
Once the flap position has been set, the unit will
memorise it and continue in the same position the
next time.
Page 8
Automatic selection of operating mode.
The Auto mode automati-
cally selects the operation
mode (HEAT, COOL or
DRY), depending on the
room temperature when
switched on.
Adjustment of
airflow
AUTO
Page 9
Cooling by extracting heat from the room.
COOL
Choice of operations
Page 9
The unit draws in heat from the outside air, transfers it inside and
heats the room.
HEAT
Page 9
Drying by extracting damp from the room.
Functioning of microcomputer depends on setting and room tem-
peratures. It dehumidifies while keeping room temperature almost
constant.
DRY
Page 9
Turning up the power operates the air-condi-
tioner in the power cooling and heating
mode.
HIGH POWER mode
Page 9
This is an economic and healthy level of op-
eration.
ECONOMY mode
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Name of each part and its function
INDOOR UNIT
STM25ZE/ZF-S
STM35ZE/ZF-S
STM50ZE/ZF-S
STM60ZE/ZF-S
OUTDOOR UNIT SCM80ZD/ZF-S
Air inlet
(on side & rear surface)
Air outlet
Wireless remote control
Page 7
Drain hose
Drains water from the dehumidified air.
Air inlet grill
Draws in the indoor air.
Remote control signal receiver
Air outlet
Air blows out of here.
Unit indication & operation section
Air filter
Removes dust or dirt from the inlet air.
Page 15
Refrigerant piping connection
electric flex
Air flow direction adjustment flap
Page 10
SCM40ZF-S
SCM45ZD/ZF-S SCM48ZF-S
SCM60ZD/ZF-S
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Unit indication section
Unit ON/OFF button
In emergencies, this button can be used for turning on/off the unit when remote control is not available. Page 13
Unit ON/OFF button
Remote control signal receiver
Unit ON/OFF button
RUN (HOT KEEP) light (green)
•Illuminates during operation.
•Blinks at air flow stop due to the ‘HOT KEEP’.
Page 17
ECONO light (orange)
Illuminates during ECONOMY operation.
TIMER light (yellow)
Illuminates during TIMER operation.
HI POWER light (green)
Illuminates during HIGH POWER operation.
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LO
MED
HI
AUTO
HI POWER ECONO
ON OFF
AM PM
Operation and indication section for remote control
Operation section
FAN SPEED button
Each time the button is pushed, the indi-
cator is switched over in turn.
•The above illustration shows all controls, but in practice
only the relevant parts are shown.
OPERATION MODE select button
Each time the button is pushed, the indi-
cator is switched over in turn.
ON/OFF button
Press for starting operation, press again for
stopping.
HI POWER button
This button changes the HIGH POWER
mode.
Page 9 ECONO button
This button changes the ECONOMY mode.
Page 9
RESET switch
Switch for resetting microcomputer.
Page 13
ON TIMER button
This button selects ON TIMER operation.
Page 11
TIME switch
This switch for setting the time.
Page 12
OFF TIMER button
This button selects OFF TIMER operation.
Page 11
TEMPERATURE button
This button sets the room temperature.
(This button changes the present time and
TIMER time.)
CANCEL button
This button cancels the ON timer and OFF
timer.
RESERVE button
This button sets the present time and
TIMER time.
Indication section
TEMPERATURE indicator
Indicates set temperature.
(Does not indicate temperature when operation
mode is on AUTO)
FAN SPEED indicator
Indicates set air flow rate with lamp.
AIR FLOW indicator
Shows selected flap mode.
HIGH POWER MODE indicator
Indicates during high power mode operation.
ECONOMY MODE indicator
Indicates during economy mode operation.
ON TIMER indicator
Indicates during ON TIMER operation.
TIME indicator
Indicates present time or timer setting time.
OFF TIMER indicator
Indicates during OFF TIMER operation.
Transmission procedure
When each button on the remote control is pressed –with the remote control pointing towards the air-conditioner unit –a signal is transmitted.
When the signal is received correctly, the unit will beep.
OPERATION MODE indicator
Indicates selected operation with lamp.
[ (Auto) •(Cool) •(Heat) •(Dry)]
AIR FLOW button
This button changes the flap mode. When
pressed, this button changes the mode in the
following order:
Page 10
(Air scroll) (Swing)
(Flap stopped)
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Temperature adjustment during AUTO
Air temperature adjustment is possible even during automatic operation. There are 6 levels of adjustment possible with the button or the button.
1
AUTO mode operation procedure
■Automatically selects the operation mode (HEAT, DRY, COOL) depending on the room temperature when switched on.
2
Air flow direction adjustment
procedure. Page 10
WARM
Press the button.
COOL
Press the button.
1
When a change in temperature is desired.
Press the or button.
•If you don’t want the AUTO mode programme, change to
HEAT, DRY or COOL instead of AUTO.
Page 9
AUTO mode can be
operated by simply
pressing the ON/OFF
button.
To stop: Press the ON/OFF button.
■Each time the button is pushed, the switch over occurs in the following order –6 →–5 →............ –1 →±0 →+1 ............ +6.
When +6 is indicatored, even if the button is pushed, the indicator does not change.
■Each time the button is pushed, the switch over occurs in the following order +6 →+5 →............ +1 →±0 →–1 ............ –6.
When –6 is indicatored, even if the button is pushed, the indicator does not change.
•Air is not blown out during the op-
eration.
Page 17
•Simultaneous automatic operation.
Page 16
Aim the remote control at the air-conditioner.
Press the ON/OFF button.
When the unit is not in AUTO mode:
Press MODE button.
Move the [ mark] to the (Auto) position.
NOTE
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1
2
COOL/HEAT/DRY mode operation procedure
Air flow direction adjustment procedure. Page 10
4
3
COOL
DRY
HEAT
26°C~28°C21°C~24°C22°C~24°C
To stop: Press the ON/OFF button.
NOTE
NOTE
•If the ECONOMY operation is selected while operating with the
strong or medium wind capacity, it takes about 1 minute before the
wind capacity drops to the weak level.
•When the following operations are conducted ECONOMY opera-
tion will be canceled.
1When the ECONO button is pressed again.
2When HIGH POWER operation is selected.
•
Air is not blown out during the operation.
Page 17
•The air-conditioners cannot be in different
operating modes at the same time, such as
one unit being in the “Cool”mode and one
unit being in the “Heat”mode.
Concerning HIGH POWER operation
Pressing the HI POWER button intensifies the operating power and initiates a powerful cooling or heating operation for 15 minutes continuously.
The remote control illuminates but the wind capacity display is erased.
Concerning ECONOMY operation
Pressing the ECONO button initiates a soft operation with the power suppressed in order to avoid an excessive cooling or heating. The unit operates
1.5°C higher than the setting temperature for the weak wind capacity during cooling or 2.5°C lower than that during heating. A message is
displayed on the remote control. The wind capacity display is erased.
NOTE
•During the HIGH POWER operation, the room temperature is not
controlled. When it causes an excessive cooling or heating, press
the HI POWER button once more to cancel the HIGH POWER
operation.
•HIGH POWER operation is not available during the DRY opera-
tion.
•During ON timer operation, HIGH POWER operation will start
when the ON time is reached.
“HI POWER”
▲
“ECONO”
▲
•When the following operations are conducted HIGH POWER op-
eration will be canceled.
1When the HI POWER button is pressed again.
2When the operation mode is changed.
3When ECONOMY operation is conducted.
Program changing procedure
Set the new program.
•The operation program can also be set or changed when
the air-conditioner is not in operation.
Aim the remote control at the air-conditioner.
Press the ON/OFF button.
Press the MODE select button.
Move the [ mark] to the desirable operation position.
(Cool), (Heat), (Dry)
Press the TEMP button.
Press or button for the desired temperature.
Standard
Press the FAN SPEED button
Set the air flow rate as desired.
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