Toshiba RAV-HM301SDTY-E User manual

FILE NO.A10-2210
INDOOR UNIT <DIGITAL INVERTER>
RAV-HM301SDTY-E
RAV-HM401SDTY-E
RAV-HM561SDTY-E
RAV-HM801SDTY-E
RAV-HM561SDTY-TR
RAV-HM801SDTY-TR
R32
SERVICE MANUAL
AIR-CONDITIONER
SPLIT TYPE

– 2 –
NOTE
Adirect current motor is adopted for indoor fan motor in the Compact Slim Duct Type air conditioner.
Caused from its characteristics, a currentlimit works on the directcurrentmotor. When replacing the
high-performance filter or when opening the service board, be sure to stop the fan.If an above action is
executed during the fan operation, the protective control works to stop the unit operation, and the check
code “P12” may be issued. However it is not a trouble. When the desired operation has finished,be sure to
reset the system to clear “P12”error code using the leak breaker of the indoor unit.Then push the opera-
tion stop button of the remote controller to return to the usual operation.
CONTENTS
Original instruction .......................................................................................... 4
Warning Indications on the Air Conditioner Unit .......................................... 6
Precaution for Safety ....................................................................................... 7
1. AIR DUCTING WORK .............................................................................. 17
1-1. Static Pressure Characteristics ....................................................................... 17
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)...................................... 18
3. WIRING DIAGRAM................................................................................... 19
4. SPECIFICATIONS OF ELECTRICAL PARTS .......................................... 20
5. CONTROL BLOCK DIAGRAM ................................................................. 21
5-1. Indoor Controller Block Diagram.................................................................... 21
5-2. Control Specifications......................................................................................22
5-3. Indoor Print Circuit Board ................................................................................32
6. TROUBLESHOOTING .............................................................................. 34
6-1. Summary of Troubleshooting..........................................................................34
6-2.Check Code List (Indoor) .................................................................................38
6-3. Diagnostic Procedure for Each Check Code (Indoor Unit) ........................... 43
7. REPLACEMENTOF SERVICE P.C. BOARD ........................................... 54
7-1. Indoort Unit.......................................................................................................54
8. SETUP AT LOCAL SITE AND OTHERS .................................................. 58
8-1. Indoor Unit.........................................................................................................58

Unit.......................................................................................................54
–3–
9. ADDRESS SETUP.................................................................................... 67
9-1. Address Setup..................................................................................................67
9-2. Address Setup & Group Control...................................................................... 68
9-3. Address Setup (Manual Setting from Remote Controller).............................70
9-4. Confirmation of Indoor Unit No. Position.......................................................71
10.DETACHMENTS ....................................................................................... 72
11.EXPLODED VIEWS AND PARTS LIST .................................................... 82
10-1. Indoor Unit ......................................................................................................72

–4–
Original instruction
Please read carefully through these instructions thatcontain importantinformation which complies with the
“Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them.
Generic Denomination: Air Conditioner
Definition of Qualified Installer or Qualified Service Person
The air conditioner mustbe installed,maintained,repaired and removed byaqualified installer or qualified
service person.
When any of these jobs is to be done, ask aqualified installer or qualified service person to do them for you.
Aqualified installer or qualified service person is an agentwho has the qualifications and knowledge
described in the table below.
Agent
Qualified
installer (∗1)
Qualified service
person (∗1)
Qualifications and knowledge which the agent must have
•The qualified installer is a person who installs, maintains, relocates and removes the air
conditioners made by Toshiba Carrier Corporation.
He or she has been trained to install, maintain, relocate and remove the air conditioners made by
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by
an individual or individuals who have been trained and is thus thoroughly acquainted with the
knowledge related to these operations.
• The qualified installer who is allowed todo the electrical work involved in installation, relocation
and removal has the qualifications pertaining to this electrical work as stipulated by the local laws
and regulations, and he or she is a person who has been trained in matters relating to electrical
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has
been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
•The qualified installer who is allowed to do the refrigerant handling and piping work involved in
installation, relocation and removal has the qualifications pertaining to this refrigerant handling
and piping work as stipulated by the local laws and regulations, and he or she is a person who
has been trained in matters relating to refrigerant handling and piping work on the air conditioners
made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such
matters by an individual or individuals who have been trained and is thus thoroughly acquainted
with the knowledge related to this work.
•The qualified installer who is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively,
he or she has been instructed in such matters by an individual or individuals who have been
trained and is thus thoroughly acquainted with the knowledge related to this work.
•The qualified service person is a person who installs, repairs, maintains, relocates and removes
the air conditioners made by Toshiba Carrier Corporation.He or she has been trained to install,
repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such operations by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to these operations.
•The qualified service person who is allowed to do the electrical work involved in installation,
repair, relocation and removal has the qualifications pertaining to this electrical work as stipulated
by the local laws and regulations, and he or she is a person who has been trained in matters
relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.
•The qualified service person who is allowed to do the refrigerant handling and piping work
involved in installation, repair, relocation and removal has the qualifications pertaining to this
refrigerant handling and piping work as stipulated by the local laws and regulations, and he or
she is aperson who has been trained in matters relating to refrigerant handling and piping
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she
has been instructed in such matters by an individual or individuals who have been trained
and is thus thoroughly acquainted with the knowledge related tothis work.
• The qualified service person who is allowed to work at heights has been trained in matters
relating to working at heights with the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.

–5–
Definition of Protective Gear
When the air conditioner is to be transported,installed, maintained, repaired or removed, wear protective
gloves and ‘safety’ work clothing.
In addition to such normal protective gear, wear the protective geardescribed below when undertaking the
special work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns,
electric shocks and other injuries.
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]
Work undertaken
All types of work
Electrical-related work
Work done at heights (50 cm or more)
Transportation of heavy objects
Repair of outdoor unit
Protective gear worn
Protective gloves
“Safety” working clothing
Gloves to provide protection for electricians and from heat
Insulating shoes
Clothing to provide protection from electric shock
Helmets for use in industry
Shoes with additional protective toe cap
Gloves to provide protection for electricians and from heat
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 productafter work
when an incorrect work has been executed.
Indicates contents assumed thatan 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 todo)
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.

–6–
Warning Indications on the Air Conditioner Unit
[Confirmation of warning label on the main unit]
Confirm thatlabels are indicated on the specified positions
If removing the label during parts replace, stick it as the original.
Warning indication
WARNING
ELECTRICAL SHOCK HAZARD
Disconnectall remote electric
power suppliesbefore servicing.
WARNING
Moving parts.
Do notoperate unitwith grille removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You mightget burned when removing
this panel.
CAUTION
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
CAUTION
BURST HAZARD
Open the service valves before the
operation, otherwise there mightbe the
burst.
Description
WARNING
ELECTRICAL SHOCK HAZARD
Disconnectall remote electric power supplies
before servicing.
WARNING
Moving parts.
Do notoperate unitwith grille removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You mightget burned when removing this panel.
CAUTION
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
CAUTION
BURST HAZARD
Open the service valves before the operation,
otherwise there might be the burst.

–7–
Precaution for Safety
The manufacturer shall not assume anyliability for the damage caused by notobserving the description of this
manual.
DANGER
Turn off
breaker.
Before carrying out the installation, maintenance, repair or removal work, be sure toset the circuit
breaker tothe OFF position. Otherwise, electric shocks may result.
Before opening the electrical control box cover of the indoor unit or service panel of the outdoor
unit, set the circuit breaker tothe OFF position. Failure toset the circuit breaker tothe OFF position
may result in electric shocks through contact with the interior parts.
Only aqualified installer (∗1) or qualified service person (∗1) is allowed toremove the electrical
control box cover of the indoor unit or service panel of the outdoor unit and do the work required.
Before starting torepair the outdoor unit fan or fan guard, be absolutely sure toset the circuit
breaker tothe OFF position, and placea"Work in progress" sign on the circuit breaker.
When cleaning the filter or other parts of the indoor unit, set the circuit breaker toOFF without fail, and
placea"Work in progress" sign near the circuit breaker before proceeding with the work.
WARNING
General
Before starting torepair the air conditioner, read carefully through the Service Manual, and repair
the air conditioner by following its instructions.
Only qualified service person (∗1) is allowed to repair the air conditioner.
Repair of the air conditioner by unqualified person may give rise to a fire,electricshocks, injury,
water leaksand/or other problems.
Only aqualified installer (∗1) or qualified service person (∗1) is allowed tocarry out the electrical
work of the air conditioner.
Under no circumstances must this work be done by an unqualified individual since failure tocarry
out the work properly may result in electric shocks and/or electrical leaks.
Execute
discharge
between
terminals.
Prohibition
Stay on
protection
Even if the circuit breaker has been set tothe OFF position before the service panel is removed
and the electrical parts are repaired, you will still risk receiving an electric shock.
For this reason, short-circuit the high-voltage capacitor terminals todischarge the voltage before
proceeding with the repair work.
For details on the short-circuiting procedure, refer tothe Service Manual.
You may receive an electric shock if the voltage stored in the capacitors has not been sufficiently
discharged.
Place a"Work in progress" sign near the circuit breaker while the installation, maintenance, repair
or removal work is being carried out.
There is adanger of electric shocks if the circuit breaker is set toON by mistake.
When checking the electric parts, removing the cover of the electric parts box of Indoor Unit
and/or frontpanel of Outdoor Unitinevitably to determine the failure,puta sign "Do notenter"
around the site before the work. Failure todo this may result in third person getting electric shock.
If, in the course of carrying out repairs, it becomes absolutely necessary tocheck out the
electrical parts with the electrical parts box cover of one or more of the indoor units and the
service panel of the outdoor unit removed in order tofind out exactly where the trouble lies, wear
insulated heat-resistant gloves, insulated boots and insulated work overalls, and take care to
avoid touching any live parts.
You may receive an electric shock if you fail toheed this warning. Only qualified service person
(∗1) is allowed todo this kind of work.
Electric
shock
hazard
When checking the electric parts, removing the cover of the electric parts box of Indoor Unit and/or
service panel of Outdoor Unit inevitably todetermine the failure, use gloves toprovide protection for
electricians,insulating shoes, clothing to provide protection from electric shockand
insulating tools. Becareful not totouch the live part. Electric shock may result. Only "Qualified
service person" is allowed todo this work.
Before operating the air conditioner after having completed the work, check that the electrical
parts box cover of the indoor unit and service panel of the outdoor unit are closed, and set the
circuit breaker tothe ONposition. You may receive an electric shock if the power is turned on
without first conducting these checks.

–8–
Check earth
wires.
Prohibition of
modification.
Use specified
parts.
Do notbring
achild close to
the equipment.
Before troubleshooting or repairwork, check the earth wire is connected to the earth terminals of
the main unit, otherwise an electric shock is caused when a leakoccurs.If theearth wire is not
correctly connected, contact an electric engineer for rework.
After completing the repair orrelocation work, check that the groundwires are connected properly.
Connect earth wire. (Grounding work) Incomplete grounding causes an electric shock.
Do not connect ground wires to gaspipes, waterpipes, and lightning rods or ground wires for
telephone wires.
Do not modify the products.Do not also disassemble or modify the parts.
It may cause afire, electric shock or injury.
When any of the electrical parts are to bereplaced, ensure that the replacement parts satisfy the
specifications given in theService Manual (or use the parts contained on the parts list in the
Service Manual).
Use of any partswhich do not satisfy the required specifications may give rise to electric shocks,smoking
and/orafire.
If, in the course of carrying out repairs, it becomes absolutely necessary to checkout the electrical parts
with the electrical parts boxcover of oneormore of theindoor units and the service panel of theoutdoor
unit removedin order to find out exactly where thetroublelies, place "Keep out" signsaround
the work site before proceeding.
Third-party individualsmay enter the work site and receive electric shocks if this warning is not heeded.
General
Electricalwiring work shall be conducted according to law and regulation in the community and
Installationmanual. Failure to do so may resultin electrocution or short circuit.
To connect the electrical wires, repairtheelectrical parts or undertake other electrical jobs, wear
gloves to provide protection for electricians, insulating shoes and clothing to provide protection
fromelectric shocks. Failure to wear this protective gear may result in electric shocks.
Inside theair conditioner are high-voltage areas and rotating parts. Due to the danger of electricshocks
or of your fingers or physical objects becoming trapped in the rotating parts,do not remove the electrical
control boxcoverof the indoorunit or service panel of theoutdoor unit. When work involving the
removalof these parts is required, contact a qualified installer or a qualified service person.
Use wiring that meetsthespecifications in the Installation Manual andthe stipulations in the local
regulations and laws.Use of wiring whichdoes not meet the specifications may give rise to
electric shocks, electrical leakage, smoking and/or afire.
Only aqualified installer ( ∗ 1) or qualified service person ( ∗ 1) is allowed to undertake work at heights using
a stand of50cmor more or to remove the electrical control box cover of the indoorunit to undertakework.
When working at heights, use a ladder which complieswith the ISO 14122 standard, and follow
the procedure inthe ladders instructions.
Also wear a helmet for use in industry as protective gear to undertake the work.
Before working atheights, put a signin place so that no-one will approachthe work location,
before proceeding with the work. Parts andotherobjects may fall from above, possibly injuring
a person below. While carrying out the work, wear ahelmet forprotection fromfalling objects.
Do not touchthealuminum finofthe unit. You may injureyourself if you do so. If the fin must be
touched for some reason,first put on protective gloves and safety work clothing, and then proceed.
When theair conditioner is to betransported, installed, maintained, repaired or removed, wear
protective gloves and'safety' work clothing.
When transporting the air conditioner, do not take hold of the bands around the packing carton.
You may injureyourself if thebands shouldbreak.
When thefirst filter comesout without connected to the other one, insert it once more to connectthe
two filterstogether and pull out them as connected. Do notinsert hands to take out the secondfilter.
You may injure Yourself.
This air conditioner has passed the pressure test as specified in IEC 60335-2-40 Annex EE.
Use forklift to carry in the air conditioner units and use winch or hoistat installation of them.
Before opening the suction board cover, set the circuit breaker to the OFFposition.
Failure to set the circuit breaker to the OFF position may result in injury through contact with the rotation parts.
Onlyaqualified installer (
∗ 1) or qualified service person ( ∗ 1) is allowed to remove the suction board cover and
do the work required.

–9–
Refrigerant
Assembly/
Cabling
Insulator
check
Ventilation
The refrigerant used by this air conditioner is the R32.
Check the used refrigerant name and use tools and materials of the parts which match with it.
For the products which use R32 refrigerant, the refrigerant name is indicated at aposition on
the outdoor unit where is easy tosee.
To prevent miss-charging, the route of the service port is changed from one of the former R22.
Do notuse anyrefrigerantdifferent from the one specified for complementor replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may
result in afailure or explosion of the product or an injury toyour body.
Do not charge refrigerant additionally.
If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the
refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over
the specified standard amountischarged and an abnormal high pressure is applied to the inside
of the refrigerating cycle resulted in cause ofbreakage or injury.
Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute
vacuuming, and then newly recharge the specified amount of liquid refrigerant.
In this time, never charge the refrigerant over the specified amount.
When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other
than R32 into the specified refrigerant.
If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating
cycle resulted in cause of injury due tobreakage.
After installation work, check the refrigerant gas does not leak.
If the refrigerant gas leaks in the room, poisonous gas generates when gas touches tofire such
as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.
Never recover the refrigerant into the outdoor unit.
When the equipment is moved or repaired, be sure torecover the refrigerant with recovering device.
The refrigerant cannot be recovered in the outdoor unit; otherwise aserious accident such as
breakage or injury is caused.
After repair work, surely assemble the disassembled parts, and connect and lead the removed
wires as before.
Perform the work sothat the cabinet or panel does not catch the inner wires.
If incorrect assembly or incorrect wire connection was done, adisaster such as aleak or fire is
caused at user's side.
After the work has finished, be sure touse an insulation tester set (500V Megger) tocheck the
resistance is 1MΩor more between the charge section and the non-charge metal section
(Earth position).
If the resistance value is low, adisaster such as aleak or electric shock is caused at user's side.
When the refrigerantgasleaks during work, execute ventilation.
If the refrigerantgas touches to a fire,poisonousgas generates.
Acase of leakage of the refrigerantand the closed room full with gasisdangerousbecause a
shortage of oxygen occurs. Be sure to execute ventilation.
If refrigerantgashas leaked during the installation work, ventilate the room immediately.
If the leaked refrigerantgascomesin contact with fire,noxiousgasmaygenerate.
After installation work, check the refrigerantgasdoesnotleak. If the refrigerantgasleaks in the
room,poisonous gas generates when gas touches to fire such as fan heater,stove or cocking
stove though the refrigerantgas itselfisinnocuous.
No fire
When performing repairs using agas burner, replace the refrigerant with nitrogen gas because
the oil that coats the pipes may otherwise burn.
When repairing the refrigerating cycle, take the following measures.
Be attentive tofire around the cycle.
When using agas stove, etc, be sure toput out fire before work; otherwise the oil mixed with
refrigerant gas may catchfire.
Do not use a welder in the closed room.
When using it without ventilation, carbon monoxide poisoning may be caused.
Do not bring inflammables close tothe refrigerant cycle, otherwise fire of the welder may catch
the inflammables.
1)
2)
3)
Insulating
measures
Connect the cut-off lead wires with crimp contact, etc, put the closed end side upward and then
apply awater-cut method, otherwise aleak or production of fire is caused at the users' side.
For an air conditioner which uses R32, never use other refrigerant than R32.
For an air conditioner which uses other refrigerant (R22, etc.), never use R32.
If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating
cycle and an injury due tobreakage may be caused.

–10 –
Check after
repair
Do not
operate the
unit withthe
valve closed.
Check after
reinstallation
Cooling check
Once therepair work hasbeen completed, check for refrigerant leaks, and check the insulation
resistance and water drainage.
Thenperform a trial run to checkthat the air conditioner is running properly.
After repair work has finished, check there is no trouble. If check is not executed, afire, electric
shock or injury may be caused. For acheck, turnoffthepower breaker.
After repair work (installation of front panel and cabinet) has finished, execute a test run to check
there isno generation of smoke orabnormalsound.
If check is not executed, a fire or anelectric shock is caused. Before test run, install thefront
paneland cabinet.
Check the following matters before a test run afterrepairing piping.
Connect the pipes surely andthere is no leak of refrigerant.
The valveis opened.
Running the compressor under condition that the valve closes causesanabnormal high
pressure resulted in damage of the parts of thecompressor and etc. and moreover if there is
leakofrefrigerant at connecting section of pipes, the air is suctioned and causes further
abnormal high pressure resulted in burst or injury.
Onlyaqualified installer (
∗ 1) or qualified service person ( ∗ 1) is allowed torelocate the air
conditioner. It is dangerous for the air conditioner to be relocated by anunqualified individual
since a fire, electric shocks, injury, water leakage, noise and/or vibration may result.
Check the following items after reinstallation.
1) The earth wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
When carrying out the pump-down work shut downthe compressor beforedisconnecting the
refrigerant pipe.
Disconnecting the refrigerantpipe with the service valve left open and thecompressor still
operatingwill cause air, etc. to be sucked in, raising the pressure inside the refrigerationcycle to
an abnormally highlevel, and possibly resulting in reputing, injury, etc.
Whenthe service panel of the outdoor unit is to be openedin order for the compressor or the
area around this part to be repaired immediately aftertheair conditioner has been shut down, set
the circuit breaker to the OFF position, and then waitat least 10 minutes before opening the
service panel.
If you fail to heed this warning, you will run the risk ofburningyourself because the compressor
pipes and other parts will be veryhot to thetouch. In addition, beforeproceeding with the repair
work, wear thekind of insulatedheat-resistantgloves designedto protect electricians.
Whenthe service panel of the outdoor unit is to be openedin order for thefan motor, reactor,
inverter orthe areas around these parts to berepaired immediately after theair conditioner has
been shut down, set the circuit breaker to the OFFposition, and thenwaitat least 10 minutes
before opening the service panel.
If you fail to heed this warning, you will run the risk ofburningyourself because the fanmotor,
reactor, inverter heat sink and other parts will be very hot tothe touch.
In addition, before proceeding with therepair work, wear thekind of insulated heat-resistant
glovesdesigned to protect electricians.
Compulsion
When the refrigerant gas leaks, find up the leaked position and repair it surely.
If the leaked position cannot be found up andtherepair work is interrupted, pump-down and
tighten the service valve, otherwisethe refrigerant gas may leak into the room.
The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove
though the refrigerant gas itself is innocuous.
When installing equipment which includes alarge amount of charged refrigerant such as amulti
air conditioner in asub-room, it is necessary that the density does not the limit even if the
refrigerantleaks.
If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused.
Tighten the flare nut with atorque wrench in the specified manner.
Excessive tighten of the flare nut may cause acrack in the flare nut after along period, which may
result in refrigerant leakage.
Nitrogen gasmust be used for the airtight test.
The charge hose must be connected in such a way that it is not slack.
For the installation/moving/reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, atrouble of the refrigerating cycle, water leak, electric shock or
fire is caused.

–11 –
Installation
Only aqualified installer or service person is allowed todo installation work. Inappropriate
installation may result in water leakage, electric shock or fire.
Before starting toinstall the air conditioner, read carefully through the Installation Manual, and
follow its instructions toinstall the air conditioner.
If the unit is installed in asmall room, take appropriate measures toprevent the refrigerant from
exceeding the limit concentration even if it leaks. Consult the dealer from whom you purchased
the air conditioner when you implement the measures. Accumulation ofhighly-concentrated
refrigerantmaycause an oxygen deficiency accident.
Do not install the air conditioner in alocation that may be subject toarisk of expire to a
combustible gas.
If acombustible gas leaks and becomes concentrated around the unit, afire may occur.
Install the indoor unit at least 2.5 m above the floor level since otherwise the users may injure
themselves or receive electric shocks if they poke their fingers or other objectsinto the indoor unit
while the air conditioner is running.
Install acircuit breaker that meets the specifications in the installation manual and the stipulations
in the local regulations and laws.
Install the circuit breaker where it can be easily accessed by the agent.
Do not place any combustion appliance in aplace where it is directly exposed tothe wind of air
conditioner,otherwise itmay cause imperfect combustion.
When mounting the rails, push them until the 3latches click.
Insert the filters into the direction which the arrows, carved on the filters, show. (2 filters are identical)

–12 –
Explanations given to user
•If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit
breaker to the OFF position,and contact aqualified service person to have the repairs done. Do notset the
circuitbreaker to the ON position until the repairs are completed.
Relocation
• Only aqualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air conditioner.
It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks,
injury, water leakage, noise and/or vibration may result.
• When carrying out the pump-down work shut down the compressor before disconnecting the refrigerantpipe.
Disconnecting the refrigerantpipe with the service valve left open and the compressor still operating will
cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level,
and possibly resulting in reputing,injury, etc.
(*1) Refer tothe “Definition of Qualified Installer or Qualified Service Person.”
Precautions for using R32 refrigerant
The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models.
However, Please read through this manual after understanding the contents below;
These safety cautions describe important matters concerning safety to prevent injury to users or other people
and damages to property. Please read through this manual after understanding the contents below (meanings of
indications), and be sure to follow the description;
Meanings of symbols displayed on the unit
WARNING
This mark is for R32 refrigerant only. Refrigerant type is written on
nameplate of outdoor unit.
Read the OWNER’S MANUAL carefully before operation.
Service personnel are required to carefully read the OWNER’S MANUAL and INSTALLATION
MANUAL before operation.
Further information is available in the OWNER’S MANUAL, INSTALLATION MANUAL, and
the like.

–13 –
Specifications
* Under 70 dBA
Model Sound pressure level (dB(A)) Weight (kg)
Cooling Heating
RAV-HM301SDTY-E * * 15
RAV-HM401SDTY-E * * 15
RAV-HM561SDTY-E * * 19
RAV-HM801SDTY-E * * 22
RAV-HM561SDTY-TR * * 19
RAV-HM801SDTY-TR * * 22

–14 –
Refrigerant R32
This air conditioner adopts a new HFC type refrigerant (R32) which does not deplete the ozone layer.
1. Safety Caution Concerned to Refrigerant R32
Be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating
cycle of the air conditioner with refrigerant R32 during installation work or service work.
If an incorrect work or incorrect service is performed, there is apossibility to cause aserious accident.
Use the tools and materials exclusive to R32 to purpose asafe work.
2. Safety and Cautionson Installation/Service
<Safety items>
When gas concentration and ignition energy are happened at the same time, R32 has aslight possibility of
burning.Although it will notignite under normal work environmentconditions, be aware that the flame spreads
if ignition should occur.
It is necessary to carry outinstallation/servicing safely while taking the following precautions into
consideration.
1) Never use refrigerant other than specified refrigerant (R32) in an air conditioner which is designed to
operate with the specified refrigerant (R32).
If other refrigerant than R32 is used, it may cause personal injury, etc. by a malfunction, a fire, a rupture.
2) Since R32 is heavier than air, it tends to accumulate on the bottom (near the floor).
Ventilate properly for the working environment to prevent its combustion.
Especially in abasement or aclosed room where is the high risk of the accumulation, ventilate the room
withalocal exhaust ventilation.
If refrigerant leakage is confirmed in the room or the place where the ventilation is insufficient, do not work
until the proper ventilation is performed and the work environmentisimproved.
3) When performing brazing work, be sure to check for leakage refrigerant or residual refrigerant.
If the leakage refrigerant comes into contact with fire,apoisonous gas may occur or it may cause afire.
Keep adequate ventilation during the work.
4) When refrigerant gas leaks during work, execute ventilation.If the leakage refrigerant comes into contact
with a fire, a poisonousgas may occur or it may cause a fire.
5) In places where installing /repairing air-conditioning equipment, etc., keep the source of ignition such as
gas combustion equipment, petroleum combustion equipment, electric heater etc. away. Do not smoke in
the place.
6) When installing or removing an air conditioner, do not mix air in the refrigerant cycle.
If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating cycle,
causing injury due to the breakage.
7) After installation work complete, confirm that refrigerant gas is not leaking on the flare connection part or
others. If leaked refrigerantcomes to contactwith a fire, toxic gas may occur, causing a fire.
8) Perform the installation work and re-installation according to the installation manual.
Pay attention especially to the area of application.Improper installation may cause refrigeration trouble,
water leakage, electric shock, or fire etc.
9) Unauthorized modifications to the air conditioner may be dangerous. If abreakdown occurs please call a
qualified air conditioner technician or electrician.
Improper repair may resultin water leakage, electric shock and fire, etc.
10)Carry out the airtight testwith nitrogen at a specified pressure. Do notuse oxygen or acetylene gas
absolutely as it may cause an explosion.
11)Always carryarefrigerant leakage detection sensor during the work and work while checking that no
refrigerantleaks around working environment.
12)If the leakage refrigerantcomes into contactwith fire, it may cause a fire.
Have a dry powder or CO2fire extinguisher adjacent to the charging area.

–15 –
<Caution items>
1) The opposite side dimension of the air-conditioner’s flared nut using R32 and the shape of the charge port
are the same as those of R410A.
2) Be careful not to charge refrigerant by mistake. Should the different type of refrigerant mix in, be sure to
recharge the refrigerant
3) Do not mix the other refrigerant or refrigerating oil with the refrigerant.
4) Since the pressure of R32 is 1.6 times higher than that of the former refrigerant(R22),use tools and parts
with high pressure resistance specification similar to R410A.
5) In the installation time, use clean pipe materials and work with great attention so that water and others do
not mix in because pipes are affected by impurities such as water, oxide film, oil, etc.Use the clean pipes.
Be sure to braze while flowing nitrogen gas in the pipe. (Never use gas other than nitrogen gas.)
6) For the earth protection,use a vacuum pump for air purge.
7) R32 refrigerant is Single-component refrigerant that does not change its composition.
Although it is possible to charge the refrigerant with either liquid or gas, charge it with liquid.
3. Pipe Materials
For the refrigerant pipes, copper pipe and joints are mainly used.
It is necessary to select the most appropriate pipes to conform to the standard.
Use clean pipes or joints to which little impurities adhere.
1) Copper pipe
Be sure to select the pipes with copper thickness in the table below since the pressure of an air conditioner
using R32 is higher than that of R22.
2) Joint
The flare joint and socket joint are used for joints of the copper pipe.
The joints are rarely used for installation of the air conditioner.
However clear impurities when using them.
<Piping>
The pipe thickness, flare-finishing size, flare nut and others differ according to arefrigerant type.
When using along copper pipe for R32, it is recommended to select “Copper or copper-base pipe without
seam”and one with bonded oil amount 40mg/10m or less.
Also do not use crushed, deformed, discolored (especially inside) pipes.
(Impurities cause clogging of expansion valves and capillary tubes.)
<Flare nut>
Use the flare nuts which are attached to the air conditioner unit.
Nominal
diameter
Outer
diameter (mm)
Thickness (mm)
R410A or R32
1/2
3/8
1/2
5/8
Make sure not to use a thin copper
pipe such as 0.7 mm copper
thickness in the market.
6.4
9.5
12.7
15.9
0.80
0.80
0.80
1.00

–16 –
Note 1When flaring is carried out for R410A or R32 using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, acopper pipe gauge, etc. are necessary.
Note 2When saturation temperature is described, the gauge manifold differs for R410A and R32.
If saturation temperature reading is required, special tools exclusive for R32 are required.
Note 3Since R32 has aslight possibility of burning, be sure to use the tools corresponding to R32.
Note 4Like R410, a Vacuum pump adapter needs installing to prevent a Vacuum pump oil (mineral oil) from
flowing backward into the Charge hose. Mixing of the Vacuum pump oil into R32 refrigerant may cause a
trouble such as generation of sludge, clogging of capillary, etc.
Note 5Be sure to use those tools after confirming they correspond to each refrigerant.
Note 6For arefrigerantcylinder exclusive for R32, the paint color (or label color) of the cylinder is set to the
specified color (light blue) togetherwith the indication of the refrigerantname.
Note 7Although the container specification is the same as R410A, use arecovering container exclusive for R32
to avoid mixing with other refrigerants.
Note 8Be careful for miss charging of the refrigerantduring work. Miss charging of the refrigeranttype may
cause not only damage of the equipment but also afire etc.
: R410A tools available
: Partly unavailable, : R410A tools unavailable
No. Installation/service tools
Tools / Equipment specification
1 Flare tool Clutch type Pipe flaring
Use Applicability to R32 air
conditioner or not
Applicability to R22 air
conditioner or not
5 Charge hose High-voltage
3 Torque wrench — Tightening of
flare nut
6 Vacuum pump — Vacuum
drying
Note 3
1/2"-20UNF(5/16" Flare)
Connection diameter
1/4"
7 Vacuum pump adapter — Vacuum
drying
Note 4
1/2"-20UNF(5/16" Flare)
Connection diameter
1/4"
8Electronic balance for
refrigerant charging
For 10 kg or
20 kg cylinder
Refrigerant
charge
9 Leakage detector — Gas leakage
check Note 5 Note 5
10 Refrigerant cylinder — Refrigerant
charge Note 6
11 Refrigerant recovery
cylinder
Exclusive for
R32
Refrigerant
recovery container Note 7
12 Refrigerant recovery
device —Refrigerant recovery device Note 8
Connection diameter
1/4"
4 Gauge manifold Port size
1/2"-20UNF
(5/16" Flare)
Evacuating,
refrigerant
charge, run
check, etc.
Note 2
2Copper pipe gauge for
adjusting projection
margin
—— Flaring by
conventional
flare tool
In addition to the above exclusive tools, the following equipment is necessary as the general tools.
General tools
1) Pipe cutter 6) Spanner or Adjustable wrench
2) Reamer 7) Hole core drill
3) Pipe bender 8) Tape measure
4) Level vial 9) Metal saw
5) Screwdriver (+, –)
Also prepare the following equipment for other installation method and run check.
1) Clamp meter 3) Insulation resistance tester (Megger)
2) Thermometer 4) Electroscope
4. Tools

–17 –
1. AIR DUCTING WORK
1-1. Static Pressure Characteristics
Low (50Pa)
High (40Pa)
Low(40Pa)
Low(20Pa) High (20Pa)
High (30Pa)
Low(30Pa)
High (10Pa)
Low(10Pa)
Lower limit of
external static
pressure (50Pa)
Low(50Pa) High (40Pa)
Low(40Pa)
Low(20Pa)
High (20Pa)
High (30Pa)
Low(30Pa)
High (10Pa)
Low(10Pa)
Upper limit of external
static pressure (50Pa) High (50Pa)
Lower limit of
external static
pressure (50Pa)
Upper limit of external
static pressure (50Pa)
Air Flow (m3/h) Air Flow (m3/h)
Static Pressure (Pa)
Static Pressure (Pa)
Standard air volume: 570 (m3/h) Standard air volume: 600 (m3/h)
High (50Pa)
301type401type
High (50Pa)
Low (50Pa)
High (40Pa)
Low (40Pa)
Low(20Pa) High (20Pa)
High (30Pa)
Low (30Pa)
High (10Pa)
Low(10Pa)
High (50Pa)
Low(50Pa)
High (40Pa)
Low(40Pa)
Low(20Pa)
High (20Pa)
High (30Pa)
Low(30Pa)
High (10Pa)
Low(10Pa)
Upper limit of external
static pressure (50Pa)
Air Flow (m3/h)
Air Flow (m3/h)
Static Pressure (Pa)
Standard air volume: 780 (m3/h) Standard air volume: 1140 (m3/h)
Static Pressure (Pa)
Lower limit of
external static
pressure (50Pa)
Upper limit of
externalstatic
pressure
(50Pa)
Lower limit
of external
static
pressure
(50Pa)
561 type801type

–18 –
2.CONSTRUCTION VIEWS(EXTERNAL VIEWS)
5
or less
5
or less
50 or more
450
50 or more
450
450
2500
or more
450
210
5 or
more
235 or
more
Check port
1250
600 or more
164
Hanging bolt pitch 370
Unit external dimension 450
40
22
Screw hole for duct mounting (N-M
4)
Air filter
Electrical control box
100
113
Φ90 knockout hole
(For air taking-in air)
260
107
300
388
320
155
86
36
173
37
Wires drawing-out port
(Gas side ΦE)
Refrigerant pipe connecting port Drain pipe connecting port
(Liquid side ΦD)
Refrigerant pipe connecting port
Unit external dimension B
C (Outside)
210
Unit external dimension
16
Hanging bolt pitch A
N
or less
M or less
250
or less
1/100 or more downward
Flexible drain hose
(Accessary)
25
or less
Hanging bolt
(Only the position of a check covewr)
Check cover
Ceiling Ceiling Ceiling
Air
inlet
Air
inlet
Service door (Ceiling opening)
Air inlet
Drain pump side
Drain pump side
Service door (Ceiling opening)
Space required for installation and servicing
Ceiling
Drain pipe
Air outlet
Service door (Ceiling opening)
Floor surface
Model type A B C D E
301 770 700 650 6.4 9.5
401 770 700 650 6.4 12.7
561 970 900 850 6.4 12.7
801 1170 1100 1050 9.5 15.9

–19 –
3. WIRING DIAGRAM
WIRING DIAGRAM
Check Items
Fuse
block
1
2
TB02
DC15V
③
(WHI)
Main P.C.Board
MCC-1643
CN22
1φ220-240V～ , 50Hz
-
BLK
2.
3.
T10
3～
MS
1
CN67
(BLK)
1
L
T6.3A
(WHI)
CN210 23
CN61 (YEL)
FM
6
6.3A
Terminal
pressure setup)
5
TB01,02
(YEL)
+
CN104
13
F01
(BLU)
7
Quick check for diagnosing faults
EARTH
BLK
WHI
2
DC 7V
DC20V
1
CN01
(DISP)
(CHK)
45
DC12V
(RED)
CN72
CN71
circuit
1 2
ON
SW501
3
RED
23
1φ 220V～ , 60Hz
Wired remote
CABLE
DM
M
12
CN34
(RED)
FS
1
3
1
2
CN41
(BLU)
WHI:WHITE
YEL:YELLOW
BLU:BLUE
BLK:BLACK
Color Indication
RED:RED
GRN:GREEN
BRW:BROWN
1
2t° TA
1
2
t°
CN504
1
TCJ
t° TC
BLK
BLK
AB
AB
123456
(HA)
Symbol Parts name
CN** Connector
F01 Fuse
FM Fan Motor
TA
Indoor temp.sensor
Reactor
Terminal Block
TC,TCJ
Temp.sensor
4.
Drain pump Motor
DM
Float Switch
indicates the terminal block.
indicates the connection terminal.
indicates the protection ground.
indicates the control P.C.board.
Long dashed short dashed line indicate
the accessories.
indicates the connector on the
control P.C.board.
CN101
(BLK)
+
CN102
②
FS
TB01
1.Broken line indicate the wiring at site.
supply
controller
(Option)
EARTH
CONNECTION
Diagnosis result
Check for the voltage between ① and
is 220 to 240VAC.
Check for the voltage between
②
and
is 15 to 60VDC.
Check Varistor if the fuse is open.
250V
2
1
Power
(External static
L
1 2 3 4 5
CN50(WHI)

–20 –
4. SPECIFICATIONS OF ELECTRICAL PARTS
Compact Slim Duct Type
snoitacificepSemanstraP.oN Type
1
2
Fan motor
Output (Rated) 50W
ICF-340WD50-1
3
4
Fan motor
5
6
Ø6mm, 1000mm
7
328mm
Output (Rated) 94W
ICF-340WD94-3
Thermo. Sensor (TA-sens or)
Heat exchanger sensor (TCJ-sensor)
10kΩat 25°CHeat exchanger sensor (TC-sensor) Ø6mm, 1000mm
FS-1A-31Float switch
MDP-1401Drain pump motor
8
CH-49-Z-TReactor
10kΩat 25°C
10kΩat 25°C