Toshiba RAS-M10PKVP-E User manual

R410A
FILE NO. A09-011
PRINTED IN JAPAN, Feb, 2010 ToMo
SERVICE MANUAL
AIR-CONDITIONER
SPLIT TYPE
RAS-M10PKVP-E, RAS-M13PKVP-E,
RAS-M16PKVP-E, RAS-M18PKVP-E /
RAS-5M34UAV-E

– 2 –
CONTENTS
1. SAFETY PRECAUTIONS ............................................................ 3
2. SPECIFICATIONS ........................................................................ 5
3. REFRIGERANT R410A ............................................................. 26
4. CONSTRUCTION VIEWS .......................................................... 34
5. WIRING DIAGRAM .................................................................... 36
6. SPECIFICATIONS OF ELECTRICAL PARTS............................ 38
7. REFRIGERANT CYCLE DIAGRAM........................................... 39
8. CONTROL BLOCK DIAGRAM .................................................. 46
9. OPERATION DESCRIPTION ..................................................... 48
10. INSTALLATION PROCEDURE .................................................. 74
11. HOW TO DIAGNOSE THE TROUBLE ........................................ 93
12. HOW TO REPLACE THE MAIN PARTS ................................... 121
13. EXPLODED VIEWS AND PARTS LIST.................................... 141

– 3 –
1. SAFETY PRECAUTIONS
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep them.
[Explanation of indications]
Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet
[Explanation of illustrated marks]
For general public use
Power supply cord of outdoor unit shall be more than 2.5 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.
CAUTION
New Refrigerant Air Conditioner Installation
• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT
DESTROY OZONE LAYER.
R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because
the working pressure of R410A 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 R410A 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 (R410A) units. For connecting pipes, use new
and clean piping materials with high pressure fittings made for R410A 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.
Indication
DANGER
WARNING
CAUTION
Explanation
Indicates contents assumed that an imminent danger causing a death or serious injury of
the repair engineers and the third parties when an incorrect work has been executed.
Indicates possibilities assumed that a danger causing a death or serious injury of the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
Indicates contents assumed that an injury or property damage () may be caused on the
repair engineers, the third parties, and the users due to troubles of the product after work
when an incorrect work has been executed.
Mark Explanation
Indicates prohibited items (Forbidden items to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory items to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (including danger/warning)
The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.

– 4 –
CAUTION
TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY
A switch or circuit breaker that can disconnect all poles must be included in the fixed wiring.
Be sure to use an approved circuit breaker or switch.
DANGER
• Ask an authorized dealer or qualified installation professional to install/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: HIGH VOLTAGE
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 INCORRECTLY
CONNECTED, ELECTRIC PARTS MAY BE DAMAGED.
• CHECK THAT THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND INSTAL-
LATION. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
• 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 (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT RESISTORS,
FURNACE, STOVES, ETC.
• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CAREFUL
NOT TO ALLOW THE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY OTHER
GASEOUS BODY INTO THE REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS MIXED IN THE
REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL BECOME ABNORMALLY
HIGH AND IT MAY RESULT IN THE PIPE BURSTING AND POSSIBLE PERSONNEL INJURIES.
• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE WORK
AND THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGER-
ANT 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 bypass 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.
• After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source such as a cooking range, noxious gas may generate.
• The electrical work must be performed by a qualified electrician in accordance with the Installation
Manual. Make sure the air conditioner uses an exclusive circuit.
An insufficient circuit capacity or inappropriate installation may cause fire.
• When wiring, use the specified cables and connect the terminals securely to prevent external forces
applied to the cable from affecting the terminals.
• Be sure to provide grounding.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone cables.
• Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock.

– 5 –
2. SPECIFICATIONS
The indoor and outdoor units that can be used in combination are shown in the tables below.
Table of models that can be connected
Table of models that can be used in combination
NOTES
A 1-room connection is not an option for the indoor units (you cannot connect only one indoor unit).
Be sure to connect indoor units in two or more.
The contents noted in this service manual limit the indoor units to the RAS-M10PKVP-E, RAS-M13PKVP-E,
RAS-M16PKVP-E, RAS-M18PKVP-E.
For other indoor units that can also be used in combination, see the Service Manual of each indoor unit.
Type
Heat pump
Outdoor unit
RAS-5M34UAV-E
Indoor unit
RAS-M10PKVP-E RAS-M13PKVP-E RAS-M16PKVP-E RAS-M18PKVP-E
RAS-M10PKVP-ND RAS-M13PKVP-ND RAS-M16PKVP-ND RAS-M18PKVP-ND
RAS-B10UFV-E RAS-B13UFV-E RAS-B18UFV-E
RAS-M07SKV-E RAS-M10SKV-E RAS-M13SKV-E RAS-M16SKV-E
RAS-M10GDV-E RAS-M13GDV-E RAS-M16GDV-E
RAS-M10SMUV-E RAS-M13SMUV-E RAS-M16SMUV-E
Type
Heat pump
Outdoor unit
RAS-5M34UAV-E
Combinations of indoor unit models that can be connected
Refer to page 7 to 18
Indoor unit
RAS-M07SKV-E
RAS-M10SKV-E RAS-M16SKV-E
RAS-M13SKV-E
RAS-M10GDV-E
RAS-M13GDV-E
RAS-M16GDV-E
RAS-B10SKVP-E
RAS-B13SKVP-E
RAS-B16SKVP-E
RAS-M10SMUV-E
RAS-M13SMUV-E
RAS-M16SMUV-E
File No.
SVM-07034
A05-010
A06-014
A06-015
CAUTION
• Exposure of unit to water or other moisture before installation may result in an electrical short.
Do not store in a wet basement or expose to rain or water.
• 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 or discharged air might disturb neighbors.
• To avoid personal injury, be careful when handling parts with sharp edges.
• Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.