Daikin RXYQ168TTJU, RXYQ96TTJU, RXYQ192TTJU, RXYQ216TTJU, RXYQ240TTJU Operation Manual
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OPERATION MANUAL
System air conditioner
MODEL
RXYQ72TTJU
RXYQ96TTJU
RXYQ120TTJU
RXYQ144TTJU
RXYQ168TTJU
RXYQ192TTJU
RXYQ216TTJU
RXYQ240TTJU
RXYQ264TTJU
RXYQ288TTJU
RXYQ312TTJU
RXYQ336TTJU
RXYQ360TTJU
RXYQ384TTJU
RXYQ408TTJU
RXYQ72TYDN
RXYQ96TYDN
RXYQ120TYDN
RXYQ144TYDN
RXYQ168TYDN
RXYQ192TYDN
RXYQ216TYDN
RXYQ240TYDN
RXYQ264TYDN
RXYQ288TYDN
RXYQ312TYDN
RXYQ336TYDN
RXYQ360TYDN
RXYQ384TYDN
RXYQ408TYDN
Read these instructions carefully before installation.
Keep this manual in a handy place for future reference.
This manual should be left with the equipment owner.
Regarding the operation procedures of the remote controller,
refer to the manual included to the corresponding remote controller.
English
Français
Español
3P362438-2C
Safety Considerations
Read these Safety Considerations for Operations carefully
before installing air conditioner or heat pump. Make sure that
the unit operates properly during the startup operation.
Instruct the customer on how to operate and maintain the unit.
Inform customers that they should store this Operation
Manual with the Installation Manual for future reference.
Meanings of DANGER, WARNING, CAUTION, and NOTE
Symbols:
DANGER ............Indicates an imminently hazardous
situation which, if not avoided, will result
in death or serious injury.
WARNING ..........Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTION ...........Indicates a potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury. It
may also be used to alert against
unsafe practices.
NOTE .................Indicates situations that may result in
equipment or property-damage
accidents only.
DANGER
• Do not install the unit in an area where ammable
materials are present due to risk of explosion resulting
in serious injury or death.
• Any abnormalities in the operation of the air
conditioner or heat pump such as smoke or re will
result in severe injury or death. Turn off the power and
contact your dealer immediately.
• Refrigerant gas may produce toxic gas if it comes into
contact with re, such as from a fan, heater, stove, or
cooking device. Exposure to this gas will result in
severe injury or death.
• For refrigerant leakage, consult your dealer.
Refrigerant gas is heavier than air and replaces
oxygen. A massive leak will result in oxygen depletion,
especially in basements, and an asphyxiation hazard
will result leading to serious injury or death.
• If equipment utilizing a burner is used in the same
room as the air conditioner or heat pump, there is the
danger of oxygen deciency which could lead to an
asphyxiation hazard resulting in serious injury or
death. Be sure to ventilate the room sufciently to
avoid this hazard.
• Safely dispose of the packing materials. Packing
materials, such as nails and other metal or wooden
parts, will result in stabs or other injuries.
• Tear apart and throw away plastic packaging bags so
that children will not play with them.
Children playing with plastic bags face the danger of
death by suffocation.
WARNING
• Contact your dealer for repair and maintenance.
Improper repair and maintenance could result in water
leakage, electric shock, and re. Only use accessories
made by Daikin that are specically designed for use
with the equipment and have them installed by a
professional.
• Contact your dealer to move and reinstall the air
conditioner or heat pump. Incomplete installation
could result in water leakage, electric shock, and re.
• Never let the indoor unit or the remote controller get
wet. Water could result in an electric shock or a re.
• Never use ammable spray such as hair spray,
lacquer, or paint near the unit. Flammable spray could
result in a re.
• When a fuse blows out, never replace it with one of
incorrect ampere ratings or different wires. Always
replace any blown fuse with a fuse of the same
specication.
• Never remove the fan guard of the unit. A fan rotating
at high speed without the fan guard is very dangerous
and could result in injury.
• Never inspect or service the unit by yourself. Contact
a qualied service person to perform this work.
• Turn off all electrical power before doing any
maintenance to avoid the risk of serious electric
shock; never sprinkle or spill water or liquids on the
unit.
• Do not touch the switch with wet ngers.
Touching a switch with wet ngers could result in
electric shock.
• Do not allow children to play on or around the unit to
prevent injury.
• The heat exchanger ns are sharp enough to cut. To
avoid injury wear gloves or cover the ns while
working around them.
• Do not put a nger or other objects into the air inlet or
air outlet. The fan is rotating at high speed and could
result in injury.
• Check the unit foundation for damage on a continuous
basis, especially if it has been in use for a long time. If
left in a damaged condition the unit may fall and could
result in injury.
• Placing a ower vase or other containers with water or
other liquids on the unit could result in a shock or re
if a spill occurs.
• Do not touch the air outlet or horizontal blades while
the swing ap is in operation could result in ngers
getting caught and injured.
• Never touch the internal parts of the controller. Do not
remove the front panel because some parts inside are
dangerous to touch. To check and adjust internal
parts, contact your dealer.
• Be sure to establish a ground.
Do not ground the unit to a utility pipe, arrester, or
telephone ground. Incomplete grounding may cause
electrical shock, or re. A high surge current from
lightning or other sources may cause damage to the
air conditioner.
i
3P362438-2C English
• Although this is a recognized measure for additional
protection, with the grounding system in North
America, a dedicated GFCI may not be necessary.
CAUTION
• Do not use the air conditioner or heat pump for any
other purposes other than comfort cooling or heating.
Do not use the unit for cooling precision instruments,
food, plants, animals or works of art.
•
Do not place items under the indoor unit it could result
in damage by condensates that may form if the humidity
is above 80% or if the drain outlet gets blocked.
• Before cleaning, stop the operation of the unit by
turning the power off or by pulling the supply cord out
from its receptacle. Otherwise, an electric shock and
injury could result.
• Do not wash the air conditioner or heat pump with
excessive water. An electric shock or re could result.
• Avoid placing the controller in a spot splashed with
water. Water entering the controller could result in an
electric shock or damage the internal electronic parts.
• Do not operate the air conditioner or heat pump when
using a room fumigation type of insecticide. Failure to
observe this could result in the chemicals to be
deposited in the unit and can endanger the health of
those who are hypersensitive to chemicals.
• Do not turn off the power immediately after stopping
operation. Always wait for at least ve minutes before
turning off the power. Otherwise, water leakage could
result.
• The appliance is not intended for use by young
children or inrm persons without supervision.
• The remote controller should be kept away from
children so they cannot play with it.
• Consult with the installation contractor for cleaning.
• Incorrect cleaning of the inside of the air conditioner
or heat pump could result in the plastics parts break
resulting in water leakage or electric shock.
• Do not touch the air inlet or aluminum n of the air
conditioner or heat pump as they can cut and could
result in injury.
• Do not place objects in direct proximity of the outside
unit. Do not let leaves and other debris accumulate
around the unit. Leaves are a hotbed for small animals
which can enter the unit. Once inside the unit, animals
result in the unit malfunctioning, and could result in
smoke or re when they make contact with electrical
parts.
NOTE
• Never press the button of the remote controller with a
hard, pointed object. The remote controller result in
damage.
• Never pull or twist the electric wire of the remote
controller. It may result in the unit malfunctioning.
• Do not place appliances that produce open ames in
places that are exposed to the air ow of the unit or
under the indoor unit. It may result in incomplete
combustion or deformation of the unit due to the heat.
• Do not expose the controller to direct sunlight. The
LCD display can become discolored and may result in
fail to display the data.
• Do not wipe the controller operation panel with
benzene, thinner, chemical dust cloth, etc. The result
may be that the panel becomes discolored or the
coating can peel off. If it is heavily dirty, soak a cloth in
water-diluted neutral detergent, squeeze it well and
wipe the panel clean. Then wipe it with another dry
cloth.
• Dismantling of the unit, disposal of the refrigerant, oil,
and additional parts, should be done in accordance
with the relevant local, state, and national regulations.
• Operate the air conditioner or heat pump in a
sufciently ventilated area and not surrounded by
obstacles. Do not use the air conditioner or heat pump
in the following places.
a. Places with a mist of mineral oil, such as cutting oil.
b. Locations such as coastal areas where there is a lot
of salt in the air.
c. Locations such as hot springs where there is a lot
of sulfur in the air.
d. Locations such as factories where the power
voltage varies a lot.
e. In cars, boats, and other vehicles.
f. Locations such as kitchens where oil may splatter
or where there is steam in the air.
g. Locations where equipment produces
electromagnetic waves.
h. Places with an acid or alkaline mist.
i. Places where fallen leaves can accumulate or where
weeds can grow.
• Take snow protection measures. Contact your dealer
for the details of snow protection measures, such as
the use of a snow protection hood.
• Do not attempt to do electrical work or grounding work
unless you are licensed to do so. Consult with your
dealer for electrical work and grounding work.
• Pay Attention to Operating Sound. Be sure to use the
following places:
a. Places that can sufciently withstand the weight of
the air conditioner or heat pump yet can suppress
the operating sound and vibration.
b. Places where warm air from the air outlet of the
outdoor unit or the operating sound of the outdoor
unit does not annoy neighbors.
• Make sure that there are no obstacles close to the
outdoor unit. Obstacles close to the outdoor unit may
drop the performance of the outdoor unit or increase
the operating sound of the outdoor unit.
• Consult your dealer if the air conditioner or heat pump
in operation generates unusual noise.
• Make sure that the drainpipe is installed properly to
drain water. If no water is discharged from the
drainpipe while the air conditioner or heat pump is in
the cooling mode, the result may be that the drainpipe
becomes clogged with dust or dirt and water leakage
from the indoor unit may occur. Stop operating the air
conditioner or heat pump and contact your dealer.
3P362438-2C English
ii
Safety Considerations
[Place of Installation]
• Make sure that the air conditioner is located in a
sufciently ventilated place not surrounded by
obstacles.
• Do not use the air conditioner in the following places.
a. Places with a mist of mineral oil, such as cutting oil.
b. Locations such as coastal areas where there is a lot of
salt in the air.
c. Locations such as hot springs resorts where there is a
lot of sulfur in the air.
d. Locations such as factories where the power voltage
varies a lot.
e. In cars, boats, and other vehicles.
f. Locations such as kitchens where oil may splatter or
there is steam in the air.
g. Locations where equipment that produces
electromagnetic waves is found.
h. Places with an acid or alkaline mist.
i. Places where fallen leaves are accumulated or weeds
grow close together.
• Take snow protection measures.
Contact your local dealer for the details of snow protection
measures, such as the use of a snow protection hood.
[Electrical Work]
• Do not attempt to conduct electrical work or
grounding work unless you are licensed to do so.
Consult with your local dealer for electrical work and
grounding work.
• Use a dedicated circuit for the air conditioner.
[Pay Attention to Operating Sound]
• Be sure to use the following places.
a. Places that can sufciently withstand the weight of the
air conditioner and suppress the operating sound and
vibration of the air conditioner.
b. Places where warm air from the air outlet of the outside
unit or the operating sound of the outside unit does not
annoy neighbors.
• Make sure that there are no obstacles close to the
outside unit.
Obstacles close to the outside unit may drop the
performance of the outside unit or an increase in the
operating sound of the outside unit.
• Consult your local dealer if the air conditioner in
operation generates unusual noise.
[Drainage through Drainpipe]
• Make sure that the drainpipe is installed properly to
drain water.
If no water is discharged from the drainpipe while the air
conditioner is cooling operation, the drainpipe may be
clogged with dust or dirt and water leakage from the indoor
units may result.
Stop operating the air conditioner and consult your local
dealer.
iii
3P362438-2C English
RXYQ72TTJU
RXYQ96TTJU
RXYQ120TTJU
RXYQ144TTJU
RXYQ168TTJU
RXYQ192TTJU
RXYQ216TTJU
RXYQ240TTJU
RXYQ264TTJU
RXYQ288TTJU
RXYQ312TTJU
RXYQ336TTJU
RXYQ360TTJU
RXYQ384TTJU
RXYQ408TTJU
RXYQ72TYDN
RXYQ96TYDN
RXYQ120TYDN
RXYQ144TYDN
RXYQ168TYDN
RXYQ192TYDN
Contents
Safety Considerations ................................................[i] [ii] [iii]
Specications ....................................................................... 2
What to do before Operation ................................................ 3
Operation Range .................................................................. 3
Operation Procedure ............................................................ 4
Cool/Heat Selector :
Name and Function of Each Switch and Display .................. 4
Basic Operation .................................................................... 5
Maintenance ......................................................................... 6
Reference Information .......................................................... 7
Optimum Operation .............................................................. 8
Seasonal Maintenance ......................................................... 8
Following Symptoms are not Air Conditioner Troubles ......... 9
Trouble Shooting ................................................................. 11
After-Sales Service and Warranty ...................................... 12
RXYQ216TYDN
RXYQ240TYDN
RXYQ264TYDN
RXYQ288TYDN
RXYQ312TYDN
RXYQ336TYDN
RXYQ360TYDN
RXYQ384TYDN
RXYQ408TYDN
VRVIV System
air conditioner
Operation
Manual
3P362438-2C English
1
Specications
This table shows the specications of the single module.
For the specications of the multi module system, refer to the specications of each single module that constitutes the system.
Model name RXYQ72TTJU RXYQ96TTJU RXYQ120TTJU RXYQ144TTJU RXYQ168TTJU
Power supply
Phase — 3~ 3~ 3~ 3~ 3~
Frequency Hz 60 60 60 60 60
Voltage V 208/230 208/230 208/230 208/230 208/230
Nominal cooling Maximum
capacity
Nominal heating Maximum
capacity
Dimensions
H×W×D
Mass
Refrigerant
Type — R410A R410A R410A R410A R410A
Charge
Design pressure
High side
Low side
Model name RXYQ72TYDN RXYQ96TYDN RXYQ120TYDN RXYQ144TYDN RXYQ168TYDN
Power supply
Phase — 3~ 3~ 3~ 3~ 3~
Frequency Hz 60 60 60 60 60
Voltage V 460 460 460 460 460
Nominal cooling Maximum
capacity
Nominal heating Maximum
capacity
Dimensions
H×W×D
Mass
Refrigerant
Type — R410A R410A R410A R410A R410A
Charge
Design pressure
High side
Low side
Btu/h 72,000 96,000 120,000 144,000 168,000
Btu/h 81,000 108,000 135,000 162,000 188,000
inch
(mm)
Ibs.
(kg)
Ibs.
(kg)
psig
(MPa)
psig
(MPa)
Btu/h 72,000 96,000 120,000 144,000 168,000
Btu/h 81,000 108,000 135,000 162,000 188,000
inch
(mm)
Ibs.
(kg)
Ibs.
(kg)
psig
(MPa)
psig
(MPa)
66-11/16 (1694)
× 36-11/16 (932)
× 30-3/16 (767)
435 (198) 525 (238) 528 (239) 695 (315) 695 (315)
13.0 (5.9) 22.7 (10.3) 22.9 (10.4) 18.1 (8.2) 17.2 (7.8)
478 (3.3) 478 (3.3) 478 (3.3) 478 (3.3) 478 (3.3)
320 (2.21) 320 (2.21) 320 (2.21) 320 (2.21) 320 (2.21)
66-11/16 (1694)
× 36-11/16 (932)
× 30-3/16 (767)
451 (205) 553 (251) 556 (252) 709 (322) 709 (322)
13.0 (5.9) 22.7 (10.3) 22.9 (10.4) 18.1 (8.2) 17.2 (7.8)
478 (3.3) 478 (3.3) 478 (3.3) 478 (3.3) 478 (3.3)
320 (2.21) 320 (2.21) 320 (2.21) 320 (2.21) 320 (2.21)
66-11/16 (1694)
× 48-7/8 (1242)
× 30-3/16 (767)
66-11/16 (1694)
× 48-7/8 (1242)
× 30-3/16 (767)
2
3P362438-2C English
What to do before Operation
This operation manual is for the following system with standard control. Before initiating operation, contact your local dealer for
the operation that corresponds to your system type.
If your installation has a customized control system, ask your local dealer for the operation that corresponds to your system.
RXYQ series
6
7
1. Outdoor unit
2. Indoor unit
3. Remote controller
4. Inlet air
5. Outlet air
6. Cool/Heat selector
7. Refrigerant piping
Operation Range
COOLING HEATING
Outdoor temperature 23°–110°FDB 0°–60°FWB
Indoor temperature 57°–77°FWB 59°–80°FDB
Indoor humidity 80% —
Note
• Cooling operation:
If the air conditioner is operated continuously while the indoor temperature is 70°F or below and the humidity is 80% or over, the interiors
of the indoor units may cause icing and water leakage may result.
• Heating operation:
The air conditioner may stop operating for the protection of the machine if the outdoor temperature is 70°F or over.
3P362438-2C English
3
Operation Procedure
• Operation procedure varies according to the combination of outside unit and remote controller. Read the chapter “What to do
before Operation”.
• Do not turn it off during the air conditioning season for starting operation smoothly.
• If the main power supply is turned off during operation, operation will restart automatically after the power turns back on again.
Cool/Heat Selector :
Name and Function of Each Switch and Display
<Cool/Heat selector>
• Select operation mode with the Cool/Heat selector as follows:
1. Fan only/air conditioning selector switch
• Set the switch to “ ” for fan only operation or to “ ” for
heating or cooling operation.
2. COOL/HEAT changeover switch
• Set the switch to “ ” for cooling operation or to “ ” for
heating operation.
Cooling operation
Heating operation
4
Fan only operation
• Press On/Off button.
The operation lamp lights up and the system starts
operation.
3P362438-2C English
Basic Operation
Dry Mode
Preparation
• For equipment protection purposes, apply power to the outdoor units at least 6 hours before starting the operation of the system.
• The dry mode may not be selected if the remote controller is master controlled and the system is not already in the cooling mode of
operation (see the following section).
• In case of changing the operation mode by the Cool/Heat selector, set it to cooling operation mode.
Cool / Heat Mode Selection Availability
• “Cool”, “Heat” and “Auto” are all only available for selection on the COOL/HEAT changeover master indoor unit. The following
table indicates the available operating modes of the other indoor units on the system based upon the selected mode of the
master indoor unit.
When the master indoor
unit is set to
Cool mode
Dry mode
Heat mode
Fan mode
Auto mode (Cooling operation)
Auto mode (Heating operation)
The other indoor units in the system can be set to
Cool Dry Heat Fan
Precautions for Selecting the COOL / HEAT Changeover Master Indoor Unit
• The COOL/HEAT changeover master must be set for a single indoor unit in the following applications
(2-Pipe Heat Pump System)
Indoor unit
3P362438-2C English
A number of indoor units are
connected to a single outdoor unit.
Set any one of the indoor units as
the COOL/HEAT changeover master.
5
Maintenance
Reset Filter Indicator
Operation
• When it is time to clean or replace the lter, one of the following messages will appear
1
2
Cool
Time to clean filter
Set to
Cool
74F
on the bottom of the basic screen.
“Time to clean lter”
“Time to clean lter & element”
“Time to clean element”
• Wash, clean, or replace the lter or element.
For details, refer to the Operation Manual supplied with the indoor unit.
•
Reset the lter indicator when the lter or element is cleaned or replaced.
• Press Menu/OK button.
The main menu screen will appear.
3
Main Menu
Reset Filter Indicator
Air Flow Direction
Ventilation
Schedule
Off Timer
Celsius / Fahrenheit
Setting
Cool
Set to
Cool
74F
1/2
• Press buttons to select Reset Filter Indicator on the main menu
screen and press Menu/OK button.
• The display shown in illustration 1 will disappear from the basic screen
when the lter sign is reset.
Maintaining the Unit and LCD Display
• Wipe the LCD and surface of the remote controller with a dry cloth when they become dirty.
• If the dirt on the surface cannot be removed, soak the cloth in neutral detergent diluted with water, squeeze the cloth tightly,
and clean the surface. Wipe the surface with a dry cloth.
Note
• Do not use any paint thinner, organic solvent, or strong acid.
6
3P362438-2C English
Reference Information
Error Code Display
Contact your local dealer in the following cases
Operation
•
If an error occurs, either one of the following items will ash in the basic screen.
1
Cool
Set to
Cool
Error : Press Menu button
74F
“Error: Press Menu button”
* The operation lamp will ash.
“Warning: Press Menu button”
* The operation lamp will not ash.
• Press Menu/OK button.
Operation
lamp
2
Error code AI
Contact Info
0123-456-7890
Indoor Model ---/000
Outdoor Model ---/000
• The Error code will ash and the service contact and model name or code
may appear.
• Notify your local dealer of the Error code and model name or code.
Precautions for Group Control System or Two Remote Controller Control System
This system provides two other control systems beside individual control (one remote controller controls one indoor unit) system.
Conrm which type of your unit is the following system.
• Group control system
One remote controller controls up to 16 indoor units. All indoor units are equally set.
• Two remote controller control system
Two remote controllers control one indoor unit (in case of group control system, one group of indoor units). The unit is
individually operated.
Note
• Contact your local dealer in case of changing the combination or setting of group control and two remote controller control systems.
3P362438-2C English
7
Optimum Operation
Observe the following precautions to ensure the system operates properly.
• Prevent direct sunlight from entering a room during cooling operation by using curtains or blinds.
• Do not leave doors and windows open. If the doors and windows remain open, air will ow out of your room causing a
decrease in the cooling or heating effect.
• Do not use other heating devices directly beneath the indoor unit.
If you do, they might get deformed by the heat.
• Never place objects near the air inlet or the air outlet of the unit. It may cause deterioration in the effect or stop the operation.
• Adjust the room temperature properly for a comfortable environment. Avoid excessive heating or cooling.
• Ventilate often.
Extended use requires special attention to ventilation.
• Keep the indoor unit and remote controller at least 3.5ft. away from televisions, radios, stereos, and other similar equipment.
Failing to do so may cause static or distorted pictures.
• Turn off the main power supply switch to the unit when the unit is not used for longer periods of time. If the switch is on, it uses
electricity. Before restarting the unit, turn on the main power supply switch 6 hours before operation to ensure smooth running.
(Refer to the chapter “Maintenance” in the indoor unit manual.)
• Fully use the function of air ow direction adjust.
Cold air gathers on the oor, and warm air gathers in the ceiling.
Set the air ow direction parallel during cooling or dry operation, and set it downwards during heating operation.
Do not let the air blow directly to a person.
• It takes time for the room temperature to reach the set temperature.
We recommend starting the operation in advance using schedule operation.
Seasonal Maintenance
Caution
• Do not touch the air inlets or aluminum ns of the outside or indoor units.
Touching them may result in injury.
• Do not wash the outside or indoor units with water.
An electric shock or re may result.
• Watch your steps at the time of air lter cleaning etc.
If the scaffold is unstable, you may fall or topple down, thus causing injury.
• Be sure to stop the operation, and turn the breaker off before cleaning.
This may cause electric shock and injury.
• Consult with the dealer for cleaning the interior of the indoor units.
Incorrect cleaning may damage the plastic parts and cause failures, such as water leakage, and an electric shock may result.
At the beginning of the season
Check
• Are the indoor and outside unit intake and outlet vents blocked?
Remove anything that might be blocking them.
Clean the exterior.
• See the Operation Manual included with the indoor unit for details on how to clean it.
Turn the power on.
• When the power comes on, the characters in the remote controller display appear.
(To protect the unit, turn the power on at least 6 hours before operating it. This makes operation smoother.)
At the end of the season
On a clear day, use fan operation for around half a day to thoroughly dry out the interior of the unit.
• Refer to chapter “Operation Procedure” for details on fan operation.
Turn off the power.
• When the power is shut off, the characters in the remote controller display disappear.
• When the power is on, the unit consumes up to several dozen Watts of power.
Turn off the power to conserve energy.
Clean the exterior.
• See the Operation Manual included with the indoor unit for details on how to clean it.
8
3P362438-2C English
Following Symptoms are not Air Conditioner Troubles
The system does not operate
• The air conditioner does not start immediately when restarting or changing the operation mode.
If the operation lamp lights, the system is in normal condition.
To prevent overloading of the compressor motor, the air conditioner starts 5 minutes after it is turned ON again in case it was turned OFF just
before.
CENTRAL
CONTROL
• If “
seconds.
This indicates that the central device is controlling the unit.
The blinking display indicates that the remote control cannot be used.
• The system does not start immediately after the power supply is turned on.
Wait 1 minute until the micro computer is prepared for operation.
It stops sometimes
• The remote controller display reads “U4” or “U5” and stops but then restarts after a few minutes.
This is because the remote control is intercepting noise from electrical appliances other than the air conditioner, and this prevents communication
between the units, causing them to stop.
Operation automatically restarts when the noise goes away.
Cool/heat cannot be changed over
• When the display shows “
It shows that this is a slave remote controller.
Refer to “Setting the Cool/Heat Change over Master”.
• When the Cool/Heat selector switch is installed and the display shows “
This is because COOL/HEAT changeover is controlled by the Cool/Heat selector. Ask your local dealer where the remote control switch is
installed.
” is displayed on the remote controller and pressing the operation button causes the display to blink for a few
MASTER
CONTROLLED
”.
MASTER
CONTROLLED
”.
Fan operation is possible, but cooling and heating do not work
• Immediately after the power is turned on.
The micro computer is getting ready to operate. Wait 10 minutes.
The fan speed does not correspond to the setting
• The fan speed does not change even if the fan speed control button is pressed.
During heating operation, when the room temperature reaches the set temperature, the outside unit goes off and the indoor unit changes to
whisper the fan speed.
This is to prevent cold air blowing directly on occupants of the room.
The fan speed will not change even if the button is pressed, when another indoor unit is in heating operation.
The fan direction does not correspond to the setting
• The fan direction does not correspond to the remote control display.
The fan direction does not swing.
This is because the unit is being controlled by the micro computer.
3P362438-2C English
9
Following Symptoms are not Air Conditioner Troubles
White mist comes out of the unit
Indoor unit
• When humidity is high during cooling operation.
If the interior of indoor unit is extremely contaminated, the temperature distribution inside a room becomes uneven. It is necessary to clean the
interior of the indoor unit. Ask your local dealer for details on cleaning the unit. This operation requires a qualied service person.
• Immediately after the cooling operation stops and if the room temperature and humidity are low.
This is because warm refrigerant gas ows back into the indoor unit and generates steam.
Outside unit
• When the system is changed over to heating operation after defrost operation.
Moisture generated by defrost becomes steam and is exhausted.
Noise of air conditioners
Indoor unit
• A “zeen” sound is heard immediately after the power supply is turned on.
The electronic expansion valve inside an indoor unit starts working and makes the noise. Its volume will reduce in about 1 minute.
• A continuous low hissing sound like owing water is heard when the system is in cooling operation or at a stop.
When the drain pump (an optional accessory) is in operation, this noise is heard.
• A squeaking sound is heard when the system stops after heating operation.
Expansion and contraction of plastic parts caused by temperature change make this noise.
• A low sound like dripping water is heard while the indoor unit is stopped.
When the other indoor unit is in operation, this noise is heard. In order to prevent oil and refrigerant from remaining in the system, a small amount
of refrigerant is kept owing.
Outside unit
• When the tone of operating noise changes.
This noise is caused by the change of frequency.
Indoor unit, outside unit
• A continuous low hissing sound is heard when the system is in cooling or defrost operation.
This is the sound of refrigerant gas owing through both indoor and outside units.
• A hissing sound which is heard at the start or immediately after stopping operation or defrost operation.
This is the noise of refrigerant caused by ow stop or ow change.
Dust comes out of the unit
• When the unit is used after stopping for a long time.
This is because dust has gotten into the unit.
The units can give off odors
• During operation.
The unit can absorb the smell of rooms, furniture, cigarettes, etc., and then emit it again.
The outside unit fan does not rotate
• During operation.
The speed of the fan is controlled in order to optimize product operation.
The compressor or fan in the outside unit does not stop
• This is to prevent oil and refrigerant from remaining in the compressor. The unit will stop after 5 to 10 minutes.
The inside of outside unit is warm even when the unit has stopped
• This is because the crankcase heater is warming the compressor so that the compressor can start smoothly.
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Hot air is emitted even though the unit is stopped
• Hot air can be felt when the unit is stopped.
Several different indoor units are being run on the same system, so if another unit is running, some refrigerant will still ow through the unit.
Does not cool very well
• Dry operation.
Dry operation is designed to lower the room temperature as little as possible.
Refer to page5
.
Trouble Shooting
If one of the following malfunctions occur, take the measures shown below and contact your local dealer.
Warning
• Stop operation and shut off the power if anything unusual occurs (burning smells, etc.)
Leaving the unit running under such circumstances may cause breakage, electrical shock, or re.
Contact your local dealer.
• If a safety device such as a fuse, a breaker or an earth leakage breaker frequently actuates;
Measure : Do not turn on the main power switch.
• If the ON/OFF switch does not properly work;
Measure : Turn off the main power switch.
• If water leaks from unit;
Measure : Stop the operation.
• The operation mode selector button does not work well.
Turn off the power.
If the system does not properly operate except for the above mentioned cases and none of the above mentioned
malfunctions is evident, investigate the system according to the following procedures.
If it is impossible to x the problem after checking all the above items, contact your local dealer.
Let them know the symptoms, system name, and model name.
1. If the system does not operate at all;
• Check if there is no power failure.
Wait until power is restored. If power failure occurs during operation, the system automatically restarts immediately after the
power supply is recovered.
• Check if no fuse has blown;
Turn off the power supply.
• Check if the breaker is blown.
Turn the power on with the breaker switch in the OFF position.
Do not turn the power on with the breaker switch in the Trip position.
(Contact your local dealer.)
2. If the system stops soon after starting the operation;
• Check if air inlet or outlet of outside or indoor unit is not blocked by obstacles.
Remove any obstacle and make it well-ventilated.
• Check if the remote controller display shows “Time to clean lter & element”;
Refer to the Operation Manual of the indoor unit. And clean the air lter or element.
3. The system operates but cooling or heating is insufcient;
• Check if air inlet or outlet of outside or indoor unit is not blocked by obstacles.
Remove any obstacle and make it well-ventilated.
• Check if the remote controller display shows “Time to clean lter & element”;
Refer to the Operation Manual of the indoor unit. And clean the air lter or element.
• Check the temperature setting.
Refer to “Operation Procedure”.
Breaker
(earth leakage circuit breaker)
ON
OFF
Switch
Tr ip position
3P362438-2C English
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Trouble Shooting
• Check the fan speed setting on your remote controller.
Refer to “Operation Procedure”.
• Check for open doors or windows.
Shut doors and windows to prevent wind from coming in.
• Check if there are too many occupants in the room during cooling operation.
• Check if the heat source of the room is excessive during cooling operation.
• Check if direct sunlight enters the room during cooling operation.
Use curtains or blinds.
• Check if the air ow angle is not proper.
Refer to “Operation Procedure”.
After-Sales Service and Warranty
After-sale Service
Danger
• Refrigerant gas may produce a toxic gas if it comes in contact with re such as from a fan, heater, stove or cooking device.
Exposure to this gas could cause severe injury or death.
Warning
• Do not disassemble, modify or repair the unit.
This may cause water leakage, electric shock or re.
Contact your local dealer.
• Do not remove or reinstall the unit by yourself.
Incorrect installation may cause water leakage, electrical shock or re.
Contact your local dealer.
• When asking your local dealer to repair, inform related staff of the details as follows:
• Model name and product No. of air conditioner:
Refer to the warranty card.
• Shipping date and installation date:
Refer to the warranty card.
• Malfunction:
Inform the staff of the defective details. (Malfunction code being displayed on the remote controller.)
• Name, address, telephone number
• Repair after the warranty term is expired
Contact your local dealer. If necessary to repair, pay service is available.
• Minimum storage period of important parts
Even after a certain type of air conditioner is discontinued, we have the related important parts in stock for 9 years at least.
The important parts indicate parts essential to operate the air conditioner.
• Recommendations for maintenance and inspection
Since dust collects after using the unit for several years, the performance will be deteriorated to some extent.
Disassembling and cleaning inside require technical expertise, so we recommend entering a maintenance and inspection
contract (at a cost) separate from normal maintenance.
• Recommended inspection and maintenance cycles
[Note: The maintenance cycle is not the same as the warranty period.]
Table 1 assumes the following usage conditions.
1. Normal use without frequent starting and stopping of the machine.
(Although it varies with the model, we recommend not starting and stopping the machine more than 6 times/hour for
normal use.)
2. Operation of the product is assumed to be 10 hours/day and 2,500 hours/year.
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• Table 1 “Inspection Cycle” and “Maintenance Cycle” Lists
Name of Main Part Inspection Cycle Maintenance Cycle [replacements and/or repairs]
Compressor
Electric motor (fan, damper, etc.) 20,000 hours
PC boards 25,000 hours
Heat exchanger 5 years
Sensor (thermistor, etc.) 5 years
Remote controller and switches 25,000 hours
Drain pan 8 years
Expansion valve 20,000 hours
Electromagnetic valve 20,000 hours
FAN
Note 1
This table indicates main parts.
See the maintenance and inspection contract for details.
Note 2
This maintenance cycle indicates recommended lengths of time until the need arises for maintenance work, in order to ensure
the product is operational as long as possible.
Use for appropriate maintenance design (budgeting maintenance and inspection fees, etc.).
Depending on the content of the maintenance and inspection contract, the inspection and maintenance cycles may in reality be
shorter than those listed here.
Shortening of “maintenance cycle” and “replacement cycle” needs to be considered in the following cases.
1. When used in hot, humid locations or locations where temperature and humidity uctuate greatly.
2. When used in locations where power uctuation (voltage, frequency, wave distortion, etc.) is high.
(Cannot be used if it is outside the allowable range.)
3. When installed and used in locations where bumps and vibrations are frequent.
4. When used in bad locations where dust, salt, harmful gas or oil mist such as sulfurous acid and hydrogen sulde may be
present in the air.
5. When used in locations where the machine is started and stopped frequently or operation time is long. (Example: 24 hour
air-conditioning)
1 year
20,000 hours
Outside : 10 years
Indoor : 13 years
Recommended replacement cycle of wear-out parts
[The cycle is not the same as the warranty period.]
• Table 2 “Replacement Cycle” Lists
Name of Main Part Inspection Cycle Replacement Cycle
Air lter
High efciency lter
(Optional accessory)
Fuse 10 years
Crankcase heater 8 years
Note 1
This table indicates main parts.
See the maintenance and inspection contract for details.
Note 2
This maintenance cycle indicates recommended lengths of time until the need arises for maintenance work, in order to ensure
the product is operational as long as possible.
Use for appropriate maintenance design (budgeting maintenance and inspection fees, etc.).
Contact your local dealer for details.
Note: Breakage due to taking apart or cleaning inside by anyone other than our authorized dealers may not be included in the warranty.
1 year
5 years
1 year
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