Toshiba RAS-B07J2KVSG-E User manual

SERVICE MAN AL
January, 2020
R32
SPLIT TYPE
Outdoor Unit
RAS-07J2AVSG-E
RAS-10J2AVSG-E
RAS-13J2AVSG-E
RAS-16J2AVSG-E
Indoor Unit
RAS-B07J2KVSG-E
RAS-B10J2KVSG-E
RAS-B13J2KVSG-E
RAS-B16J2KVSG-E
RAS-B07N4KVSG-E
RAS-B10N4KVSG-E
RAS-B13N4KVSG-E
RAS-B16N4KVSG-E
FILE NO. SVM-20015

CONTENTS
1.SAFETY PRECAUTIONS .......................................................................... 3
2. SPECIFICATIONS ..................................................................................... 6
3.REFRIGERANT R32 .................................................................................11
4.CONSTRUCTION VIEWS ........................................................................ 19
5.WIRING DIAGRAM.................................................................................. 21
6.SPECIFICATIONS OF ELECTRICAL PARTS......................................... 23
7.REFRIGERANT CYCLE DIAGRAM ........................................................ 24
8.CONTROL BLOCK DIAGRAM................................................................ 28
9. OPERATION DESCRIPTION................................................................... 31
10.INSTALLATION PROCEDURE................................................................ 65
11.HOWTODIAGNOSETHETROUBLE...................................................... 83
12.HOWTO REPLACETHE MAIN PARTS..................................................111
13.EXPLODEDVIEWS AND PARTS LIST ................................................. 133
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For general public use
Power supply cord of outdoor unit shall be more than 1.5 mm2(H07RN-F or 60245IEC66) polychloroprene
sheathed flexible cord.
• Read this “SAFETY PRECAUTIONS” carefully before servicing.
• The precautions described below include the important items regarding safety.Observe them without fail.
• After the servicing work, perform a trial operation to check for any problem.
• Turn off the main power supply switch (or breaker) before the unit maintenance.
1. SAFETY PRECAUTIONS
Read the precautions in this manual
carefully before operating the unit.
This appliance is fi lled with R32.
(Flammable Material)
• THIS AIR CONDITIONER ADOPTSTHE NEW HFC REFRIGERANT (R32)WHICH DOES NOT
DESTROYOZONE LAYER.
R32 refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because the
working pressure of R32 refrigerant is approx.1.6 times of refrigerant R22.Accompanied with the adoption
of the new refrigerant, the refrigeration machine oil has also been changed.Therefore, during installation
work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter into the new
type refrigerant R32 air conditioner circuit.
To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging
port on main unit and installation tools are different from those used for the conventional refrigerant units.
Accordingly, special tools are required for the new refrigerant (R32) units.For connecting pipes, use new
and clean piping materials with high pressure fittings made for R32 only, so that water and/or dust does not
enter.Moreover, do not use the existing piping because there are some problems with pressure fittings and
possible impurities in existing piping.
CAUTION
TO DISCONNECTTHE APPLIANCE FROMTHE MAIN POWER SUPPLY
This appliance must be connected to the main power supply by means of a circuit breaker or a switch
with a contact separation of at least 3 mm in all poles.
Information included in the Operation
Manual and/or Installation Manual.
Service personnel should be handing this equipment
with reference to the Installation Manual.
■Important information regarding the refrigerant used
This product contains fl uorinated greenhouse gases covered by the Kyoto Protocol. Do not vent gases into
the atmosphere. Refrigerant type: R32
GWP(1) value: 675*
(1)GWP = global warming potential
The refrigerant quantity is in dicated on the unit name plate.
*This value is based on F gas regulation 517/2014 CAUTION
CAUTION
New Refrigerant Air Conditioner Installation
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• ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONALTO IN-
STALL/MAINTAIN THE AIR CONDITIONER.
INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.
• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE
ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
DANGER: HIGHVOLTAGE
The high voltage circuit is incorporated.
Be careful to do the check service, as the electric shock may be caused in case of touching parts
on the P.C. board by hand.
• CORRECTLY CONNECT THE CONNECTING CABLE. IF THE CONNECTING CABLE IS INCOR-
RECTLY CONNECTED, ELECTRIC PARTS MAY BE DAMAGED.
• CHECK THAT THE EARTHWIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND
INSTALLATION. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
DANGER
•DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE
TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.
•TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE
THE UNIT WELL AWAY (MORETHAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT
REGISTORS, FURNACE, STOVES, ETC.
•WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BEVERY CARE-
FUL NOT TO ALLOWTHE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY
OTHER GASEOUS BODY INTOTHE REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS
MIXED INTHE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL
BECOME ABNORMALLY HIGH AND IT MAY RESULT INTHE PIPE BURSTING AND POSSIBLE PER-
SONNEL INJURIES.
•IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OFTHE PIPE DURING THE SERVICE
WORK ANDTHE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE
REFRIGERANT GAS IS HEATED, SUCH AS BY FIRE, GENERATION OF POISONOUS GAS MAY
RESULT.
WARNING
•Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock
switches.
•Do not install in a place which cannot bear the weight of the unit. Personal injury and property damage can
result if the unit falls.
•Before doing the electrical work, attach an approved plug to the power supply cord. Also, make sure the
equipment is properly earthed.
•Appliance shall be installed in accordance with national wiring regulations. If you detect any damage, do
not install the unit. Contact your dealer immediately.
•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 an injury to your body.
•Do not use means to accelerate the defrosting process or to clean, other than those recommended by the
manufacturer.
•The appliance shall be stored in a room without continuously operating ignition sources (for example:
open flames, an operating gas appliance or an operating electric heater).
•Be aware that refrigerants may not contain an odour.
•Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, flame, sparks,
or other sources or ignition. Else, it may explode and cause injury or death.
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•For R32 model, use pipes, flare nut and tools which is specified for R32 refrigerant. Using of existing (R22)
piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly
result in explosion and injury.
•Thickness of copper pipes used R32 must be more than 0.8mm. Never use copper pipes thinner than 0.8mm.
•After completion of installation or service, confi rm there is no leakage of refrigerant gas. It may generate
toxic gas when the refrigerant contacts with fire.
•Appliance and pipe-work shall be installed, operated and stored in a room with a floor area larger than
Amin m2. How to get Amin m2 : Amin = (M / (2.5 x 0.22759 x h0))2
M is the refrigerant charge amount in appliance in kg. h0 is the installation height of the appliance in m: 0.6 m
for floor standing/1.8 m for wall mounted/1.0 m for window mounted/2.2 m for ceiling mounted (For these
units recommend installation height 2.5 m.).
•Comply with national gas regulations.
CAUTION
•Exposure of unit to water or other moisture before installation could result in electric shock. Do not store it
in a wet basement or expose to rain or water.
•After unpacking the unit, examine it carefully for possible damage.
•Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and
accumulates at surrounding of the unit, it may cause of fire.
•Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify
the noise level of the unit or where noise and discharged air might disturb neighbors.
•To avoid personal injury, be careful when handling parts with sharp edges.
•Please read this installation manual carefully before installing the unit. It contains further important
instructions for proper installation.
•The manufacturer shall not assume any liability for the damage caused by not observing the description of
this manual.
For Reference:
If a heating operation would be continuously performed for a long time under the condition that the outdoor
temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom
plate, resulting in a trouble of the cabinet or fan.
It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.
For details, contact the dealer.
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