Toshiba RAS-300KSG Service manual

50Hz COOLING ONLY MODEL
- RAS-300KSG / RAS-300ASG
- RAS-300KSR / RAS-300ASR
- RAS-360KSG / RAS-360ASG
- RAS-360KSR / RAS-360ASR
P/N:42KHFG54030-R

PRECAUTIONS
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BEFORE OPERATION
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UNIT OPERATION
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GENERAL OPERATION
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AUTOMATIC OPERATION(For Heat Pump Model)
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TIMER OPERATION
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COMBINATION OF ON, OFF AND DAILY TIMER
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SLEEP TIMER
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DISCHARGE AIR LOUVER CONTROL
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CARE AND MAINTENANCE
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POINTS TO NOTE
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CLEANING THE FILTERS AND FRONT PANEL
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CLEANING THE MAIN UNIT
STANDARD INSTALLATION ACCESSORIES
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CHOOSING THE LOCATION
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INDOOR UNIT
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OUTDOOR UNIT
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INSTALLATION TIPS
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INDOOR UNIT INSTALLATION
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INSTALLING THE WALL HANG BRACKET
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MAKING THE WALL PENETRATION FOR THE INTERCONNECTING PIPING
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INDOOR UNIT WIRING
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FORMING THE DRAIN HOSE AND REFRIGERANT PIPING
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INSTALLING THE INDOOR UNIT BODY TO THE WALL HANG BRACKET
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CONNECTING THE PIPING
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CONNECTING PIPE TO THE INDOOR UNIT
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CONNECTING THE INTERCONNECTING PIPE TO THE OUTDOOR UNIT VALVE
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AIR PURGE
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USING THE VACUUM PUMP
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GAS LEAK CHECK
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FINISHING
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OUTDOOR UNIT WIRING
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ELECTRICAL CONNECTION
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CONNECTING THE POWER SUPPLY
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TROUBLESHOOTING
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INSTALLATION MANUAL
OWNER'S MANUAL
CONTENTS

2
3
PRECAUTIONS
INPORTANT SAFETY INFORMATION
Installation and servicing of air conditioning equipment can be hazardous due to
system pressure and electric components. Only trained and qualified service per-
sonnel should install, repair or service air conditioning equipment.
Untrained personnel can perform basic maintenance functions of cleaning coils
and filters, and replacing filters. And untrained personnel don’t include children
and persons who with reduced physical sensory or mental capabilities, or lack of
experience and knowledge. They should have been given supervision or instruction
concerning use of the appliance by person responsible for their safety.
All other operations should be performed by trained service personnel. When
working on air conditioning equipment, observe precautions in the literature, tags
and labels attached to the unit and other safety precautions that may apply.
Follow all safety codes. Wear glasses and work gloves. Use a quenching cloth for
brazing and detaching brazed connections. Have a fire extinguisher available for all
brazing operations.
TO DISCONNECT THE APPLIANCE FROM THE MAIN SUPPLY.
This appliance must be connected to the main by means of a circuit
breaker or a switch with a contact separation of at least 3 min.
Check that all current national safety code requirements have been fol-
lowed for the installaltion. In particular ensure that a properly sized and
connected ground wire is in place.
Do not switch off the split system by disconnecting the electric power
supply. The unit must always be switched off using the remote control.
Check that the impedance of the mains power supply is inconformance
with the unit power input indicated in the electric data table, on page 31.
Earth work should be requested from the supplying retail dealership or
professional vendors. Insufficient grounding work may be the cause of
electric shock. Do not connect the earth wire to a gas pipe, water pipe,
lighting conductor or telephone earth wire.
Do not use any refrigerant different from the one specified for
complement or replacement. Otherwise, abnormally high pressure may
be generated in the refrigeration cycle, which may result in a failure or
explosion of the product or injury to your body.
WARNING
CAUTION
WARNING
WARNING
WARNING
• Do not install by connecting them to other indoor or outdoor units.
Mismatching of the units and incompatibility between control devices in the
two units could lead to damage of both unit.
TOSHIBA declines any responsibility, and warranty shall be void if these
installation instructions are not observed or if change are made tothe
electrical connections.
• Before performing service or maintenance operations on the system, turn off
the main power switches and breaker of the unit. Electric shock may cause
personal injury.“If the supply cord is damaged. It must be replaced with
a same cord size approved by this manual or contact TOSHIBA
distributor to arrange for replacement.”
CAUTION
The mains supply must be connected to the outdoor unit.

2
3
PRECAUTIONS
To avoid the risk of serious electric shock,
never splash the indoor and the outdoor
unit with water.
Do not use flammable sprays near the unit.
The unit can be damaged by gasoline, benzene,
thinner, inescticide and other chemical agents.
Do not put hands or objects into the discharge
grille of outdoor unit.
This unit has a fan running at high speed.
It is very dangerous to touch the fan.
Use the correct voltage.
Using voltage other than specified will
damage the unit.
Use only fuses of the proper amperage.
Do not obstruct the front of the discharge
grille of both indoor and outdoor units.
This will block air f low, reduce the cooling
effect and may result in unit malfunction.
Keep heat sources away from the unit,
high temperature can cause damage.
Do not use circuit breaker as a means
of turning off the unit.
The unit must always be switched off
using remote control.
In summeer, if possible, prevent direct
sunlight from entering the room;
draw curtains or blinds.
WARNING

4
5
PRECAUTIONS
The air conditioner is not intended for use by young
children or special needs persons without supervision
by a person that is responsible for their safety.
Wiring connections must be secured tightly and the
cable should be routed properly to avoid the risk.
Do not place the power cord near the heater.
Do not touch the unit with a wet hand , there is a risk
of electric shock.
Two or more people should lift and transport the
product and use proper safety precautions while lifting
the product to avoid personal injury.
Young children should be supervised to ensure that
they do not play with the air conditioner.
Don’t use a damaged power cord , or loose socket as
it may cause fire or electrical shock.
Install the panel and cover the control box securely.
Do not place anything on the power cable , there is a
risk of fire and electric shock.
Always check for gas leakage after installation or repair
of product.
Standard Safety Instructions for Air-Conditioning Units

4
5
BEFORE OPERATION
EMER.
button
Indoor Unit Display
Emergency Operation
Test Operation
①Blue light : normally off.
②Orange light : illuminated during timer mode.
③Green light : illuminated during operation.
④EMER. button
When the remote control is lost, damaged or the bettery is discharged, the EMER. button can be used to run the unit.
• Press the EMER. button once briefly at the off mode condition, shorter than for 5 sec.
- According to the room temperature, the unit operates the Cool mode in cool only model and the Auto mode in Heat pump model.
• If you want to stop the emergency operation, push the EMER. button again or operate the remote control.
• The setting conditions of emergency operation are as follows:
• EMER. button :
Can be used when the remote
control is lost or inoperative.
This operation is used for checking after unit installation.
• Press the EMER. button continuously during 5~10sec. And then unit will be operated
as test mode.
• Press the EMER. button once more after checking to activate the remote control. If
there is any input signal (remote control signal or EMER. button press) during test
operation, the TEST mode will change to the input signal mode.
• The setting conditions of the test operation are as follows:
- Operation mode : COOL - Fan speed : HIGH
- Timer mode : Disable - Discharge air direction : SWING
Model Operation Preset mode Fan speed Timer mode
temperature Discharge air direction
Cooling only COOL 24 ℃AUTO Disable Horizontal
Heat Pump AUTO 25 ℃AUTO Disable Preset location according
to 'Cool' or 'Heat' mode

6
7
BEFORE OPERATION
Remove the cover of the battery compartment at
the back of the remote control by sliding it out in the
direction of the arrow.
Remove the used batteries and insert new batteries.
The remote control uses two alkaline batteries. (1.5V,
LR03 x 2 )
MODE
POWER ON/OFF
DISPLAY
FAN SPEED
TEMPERATURE SETTING
PRESET
OFF TIMER
TIMER (SET/CLEAR) SETING
LEFT/RIGHT DIRECTION
UP/DOWN DIRECTION
HI POWER
ON TIMER
SLEEP TIMER
Names And Functions Of Remote Control Replacing Batteries
1
2

6
7
5m maximum
BEFORE OPERATION
1
2
3
4
Matching Address between Indoor Unit and Remote Control
Signal Receiving
• This function must only be performed by qualified service
personnel.
Note
When two units are used in the same room, you can match the address of
the remote control to that of the unit. The air conditioner will
not operate if curtains,
doors or other materials
block the signals from the
remote control to the unit.
Avoid spilling liquid onto
the remote control or
dropping it. This can cause
deformation, discoloration
and malfunction.
A mounting bracket for the
remote control is supplied
with the unit.
Install the mounting bracket
on the wall below the receiver
of the unit.
If the infrared signal receiver
on the unit is exposed
to direct sunlight, the air
conditioner may not work
properly.
Draw the curtains to avoid
direct sunlight.
Use the remote control where its signals can reach the receiver of the air
conditioner. (A distance of 5m is allowed)
• You can hear a beep from the unit which indicates that the signal is received.
CAUTION

8
9
BEFORE OPERATION
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2
3
4
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7
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10
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8
6
Battery lasts for about one
year. Do not mix different
types of batteries.
Avoid water and moisture.
Do not drop or step on it.
Do not press two buttons at
one time.
(Press one at a time)
Do not attempt to attach the
remote control to an electrical
source.
If operation fails after
changing the batteries, take
them out and insert again
after 5 seconds.
If the remote control receiver
of the unit is blocked by the
curtain, reception may fail. In
addition, keep it away from the
direct sunlight or lamp lights.
The air conditioner may not
work properly.
If you are using a (3-wave
length) fluorescent lamp, the
reception may be low.
Check the (+/-) of the battery.
Keep it away from heat.
(To prevent deformation)
When the low battery icon is
shown on the display, replace
the batteries.
Take out all the batteries if
you will not use them for long
period.(Battery liquid can cause
malfunctions)
Direct your remote control
toward the receiver of the
indoor unit. If you hear the
beep, signal is received.
Transmission signal indicator
Low Battery
Fan speed
Sleeping Operation
High power
Preset
Temperature selected
ON timer selected
OFF timer selected
Swing indicator
Remote Control Display Cautions for using wireless remote

8
9
Fan speed button
●Press this button to select the desired fan speed.
UNIT OPERATION
3
2
1
4
5
6
7
8
ON/OFF button
Press this button and the COOL (AUTO for Heat Pump Model) operation is indicated.
●A receiving beep is heard.
●The green UNIT ON lamp of the indoor unit display illuminates.
Mode button
●Press this button to select the desired operation.
For heat pump model For cooling only model
Temp (▲,▼) button
●Press these button to set the desired temperature.
Vertical Swing button
●Press this button to control the desired air flow direction up and down.
Horizontal Swing button
●Press this button to control the desired air flow direction to the left and right side.
ON/OFF button
Press this button to stop the unit operation.
●A receiving beep is heard.
●The UNIT ON lamp is extinguished.
Hi Power Mode button
Press this button to cool down quickly the indoor temperature.
AUTO HIGHLOW MID
(AUTO) (COOL) (DRY) (FAN)(HEAT) (COOL) (DRY) (FAN)
Procaure
GENERAL OPERATION
●Dry operation eliminated moisture economically by operating the compressor.
indoor and outdoor fan motor intermittently, so that the room temperature is
maintained at the set temperature.
Note
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4
3
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