(b) After performing STEP4 in (a) above, the next steps to be carried out are determined by the difference between the room
temperature and the setting temperature.
1) Room temperature – Setting temperature > 5ºC: STEP2 → STEP3 → STEP4 are performed.
2) Room temperature – Setting temperature
Horizontal
blowing
<
5ºC: STEP3 → STEP4 are performed.
=
-
-
12
Page 15
4.7 Timer operation
(1) Comfortable timer setting (ON timer)
If the timer is set at ON when the operation select switch is set at the cooling, or the cooling in auto mode operation is selected, the
comfortable timer starts and determines the starting time of next operation based on the initial value of 15 minutes and the relationship
between the room temperature at the setting time (temperature of room temperature sensor) and the setting temperature. (Max. 60
minutes)
Operation modeOperation start time correction value (Min.)
At cooling
Notes (1) At 5 minutes before the timer ON time, operation starts regardless of the temperature of the room temperature sensor (Th1).
(2) This function does not actuate when the operation select switch is set at the dehumidifying as well as the dehumidifying in the auto mode.
However, the operation of item (1) above is performed during the dehumidifying in the auto mode.
(3) During the comfortable timer operation, both the run light and timer light illuminate and the timer light goes off after expiration of the timer, ON setting time.
Corrects the starting time of next operation by
calculating the temperature difference.
¡ If the difference (= Room temperature – Setting tempera-
ture) is 4°C, the correction value is found to be +5 minutes from the table shown above so that the starting time
of next operation is determined as follows:
15 min. earlier + 5 min. = 20 min. earlier
↑↑
Current operation
Setting time
start time
Correction value
(2) Sleep timer operation
Pressing the SLEEP button causes the temperature to be controlled as shown in the following chart with respect to the set temperature.
Cooling, DRY
+
1.0
Temperature
setting (˚C)
Timer operation
(time)
0
-1.0
01.02.0
Start
(3) OFF timer operation
The Off timer can be set at a specific time (in 10-minute units) within a 24-hour period.
-
13
-
Page 16
4.8 Installation location setting
Airflow rangeAirflow rangeAirflow range
(Left End Installation)(Center Installation) (Right End Installation)
1, 4
2
3
(Center Installation) (Right End Installation) (Left End Installation)
When the indoor unit is installed at the end of a room, control the air flow direction so that it is not toward the side walls. If you set the
remote control’s installation position, keep it so that the air flow is within the range shown in the following figure.
(1) Setting
1 If the air conditioning unit is running, press the ON/OFF button to stop.
The installation location setting cannot be made while the unit is running.
2 Press the AIR FLOW
AIRFLOW
or more.
The installation location display illuminates.
3 Setting the air-conditioning installation location.
Press the AIR FLOW
location.
Each time the AIR FLOW
indicator is switched in the order of:
4 Press the ON/OFF button.
The air-conditioner's installation location is set.
Press within 60 seconds of setting the installation location (while the
The indoor fan is automatically controlled in accordance with the difference between the room temperature (detected by the
room temperature sensor) and the termostat setting as shown below.
(3) Thermostat operation
The compressor and outdoor fan and turned on and off as shown below according to the temperature setting.
(4) HIGH POWER operation ( “HI POWER” button on the remote control : ON)
The following operation is performed for 15 minutes without relation to the set temperature or fan speed setting.
(5) ECONOMY operation ( “ECONO” button on the remote control : ON)
The set temperature changes as shown at right, and the
indoor unit fan speed is set on speed 2.
Notes (1) Room temperature is not adjusted during the HIGH POWER operation.
(2) Protective functions will actuate with priority even during the HIGH POWER
operation.
-
15
-
Page 18
4.10 Outline of dehumidifying operation
ON
OFF
OFF
0
3
6
912
ON
OFF
OFF
0
12
ON
OFF
OFF
0
4
8
ON
OFF
OFF
0
8
OFF
OFF
0
8
ON
OFF
OFF
0
3
8
Running time
Running start ~ 1 hour
1~2 hours
2 hours ~
Set temperature compensation
Set temperature +0.5
Set temperature +1.0
Set temperature +1.5
(1) Choose the appropriate operation block area by the difference between room temperature and thermostat setting temperature as
shown below.
¡ Operation block area
D BlockC BlockB BlockA Block
–20+3
Room temp. – Setting temp.(deg)
(2) Start up operation
Compressor
and
outdoor fan
Indoor fan
Speed 2
Speed 1
C.D Block
20
seconds
Compressor
and
outdoor fan
Indoor fan
A.B Block
Speed 2
minutes
StartTemperature check
Note (1) Thermostat operation is performed in A, B Block. When compressor and indoor fan stop by thermostat operation within 12 minutes from start, temperature
check is performed by operating indoor fan at speed 1 for 20 seconds before finishing 12 minutes and allowing decision of next operation block.
Start
Operation block decision
Temperature check
(3) DRY operation
After finishing start up operation described in (2) above, thermal dry operation is performed at 8 minutes intervals, according to the
difference between room temperature and thermostat setting temperature as shown below.
Beside, 1 cycle of this operating time consists of 8 minutes, 7 cycle operation is performed then.
Compressor
and
outdoor fan
Indoor fan
Compressor
and
outdoor fan
Indoor fan
D Block
Speed 1
20 seconds
minutes
StartTemperature checkStartTemperature check
B Block
Speed 2
Speed 1
20 seconds
minutes
StartTemperature checkTemperature check
Compressor
and
outdoor fan
Indoor fan
Compressor
and
outdoor fan
Indoor fan
C Block
Speed 2
Speed 1
Operation block decision
A Block
Speed 2
Start
20 seconds
minutes
minutes
minutes
(4) ECONOMY operation ( “ECONO” button on the remote control : ON)
The set temperature changes as shown at right, and the
indoor unit fan speed is set on speed 2.
Operation block decision
-
-
16
Page 19
4.11 Outline of automatic operation
52C
Indoor fan motor
Outdoor fan motor
Flap and louver
Speed 6Speed 5Speed 4
OFF
OFF
ON or OFF
Speed 3Speed 2Speed 1
HIGH
POWER
AUTOHIGHMEDLOWECONOMY
Functional
components
Fan speed switching
Indoor unit fan
Outdoor unit fan
Compressor
Speed 6 fixed
OFF
OFF
(1) Determination of operation mode
The blow operation of the indoor fan is carried out at the 1st speed for 20 seconds and the room temperature is checked to
determine the operation mode automatically. (When the unit is operated by the turn-on timer, the blow operation is not carried out.)
Room temperature<26°C26°C
<
Room temperature
=
Operation modeDryCooling
(2) Within 30 minutes after either auto or manual operation stops, if auto operation is started, or if you switch to auto operation during
manual operation, the system runs in the previous operation mode.
(3) The temperature is checked 1 time in 30 minutes after the start of operation, and if the judgment differs from the previous operation
mode, the operation mode changes.
(4) Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals of the
wireless remote control and the setting temperature.
(2) HIGH POWER operation (“HI POWER” button on the remote control : ON)
The following operation is performed for 15 minutes without relation to the set fan speed.
4.13 Outline of clean operation
COOL,DRY,AUTO (COOL,DRY); after operation has stopped, the moisture inside the dryer air conditioner, controls the production of
fungus etc.
(1) Operating condition
‘Clean’ is switched ON, when the air conditioner receives a STOP signal.
(2) Detail of operation
CompressorOFF
Indoor fan motorSpeed 1
Outdoor fan motorOFF
Flap and louverFully closed
(3) Reset condition
When control finishes 120 minutes after the Clean operation starts. When the stop signal is received from the remote control.
Note (1) Protective functions will actuate with priority even during the HIGH POWER operation.
-
-
17
Page 20
4.14 Protective control function
(1) Frost prevention for indoor heat exchanger [Preventing frost accumulation on the indoor heat exchanger]
During the Cooling or Dry operation in low room air temp. condition, evaporating temperature will decrease and consequently
indoor heat exchanger sometimes gets clogged with frost (or ice).
In order to prevent this trouble, compressor is stopped by under mentioned condition by indoor heat exchanger sensor (Th
timer (built into microcomputer circuit) functions.
Also indoor fan is changed over to protects the fan tap just before frost prevention control.
2) and
CM, FM
1Temperature of heat exchanger is
O stoppage condition
2.5˚C or lower.
CM, FMO re-starting condition
1Temperature of heat exchanger is
8˚C or higher.
2As least 3 minutes has passed since
the compressor started.
Protects
the fan
tap just
before
frost
prevention
control
2.58
Indoor heat exchanger
temperature (˚C)
Set fan
speed
(2) Three-minute forced operation
When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the
operation mode. (After 3 minutes has passed the thermal operation is effective.)
However, stopping the compressor via a stop signal or protection control has priority.
(3) Self diagnosis function
When something abnormal happens on the outdoor unit, indoor unit fan motor and each sensor (heat exchanger, room temperature),
it will be indicated by flashing lights.
(a) Abnormality of outdoor unit: When the indoor heat exchanger temperature does not fall to 25°C or below for 40 minutes
(b) Abnormality of indoor fan motor: The indoor fan motor revolves at a rate under 300 rpm for 30 seconds or longer, the
(c) Abnormality of heat exchanger sensor: RUN light will flashing when the input temperature of the heat exchanger
(d) Abnormality room temperature sensor: RUN light will flashing when the input temperature of the room temperature
Note (1) If the above abnormalities happen concurrently, the light will flashing in the order of item number (a) through (d) above.
after 5 minutes have elapsed since the compressor operation start, the abnormality stop
occurs. (The timer light flashes 2 times.)
RUN light will flash.
sensor measures less than –20°C for more than 15 seconds with the air
conditioner “OFF”. (will not flashing during operation)
sensor measures less than –20°C for more than 15 seconds with the air
conditioner “OFF”. (will not flashing during operation)
-
-
18
Page 21
5APPLICATION DATA
SAFETY PRECAUTIONS
¡ Please read these “Safety Precautions” first then accurately execute the installation work.
¡ Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points
which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the
WARNING section. However, there is also a possibility of serious consequences in relationship to the points listed in the
CAUTION section as well. In either case, important safety related information is indicated, so by all means, properly observe all
that is mentioned.
¡ After completing the installation, along with confirming that no abnormalities were seen from the operation tests, please explain
operating methods as well as maintenance methods to the user (customer) of this equipment, based on the owner’s manual.
Moreover, ask the customer to keep this sheet together with the owner’s manual.
WARNING
¡ To disconnect the appliance from the mains supply this appliance must be connected to the mains by means of
a circuit breaker or a switch (use a recognized 20A) with a contact separation of at least 3mm.
¡ The appliance shall be installed in accordance with national wiring regulations.
¡ This system should be applied to places as households, residences and the like. Application to inferior environ-
ment such as engineering shop could cause equipment malfunction.
¡ Please entrust installation to either the company which sold you the equipment or to a professional contractor.
Defects from improper installations can be the cause of water leakage, electric shocks and fires.
¡ Execute the installation accurately, based on following the installation manual. Again, improper installations can
result in water leakage, electric shocks and fires.
¡ For installation, confirm that the installation site can sufficiently support heavy weight. When strength is insuffi-
cient, injury can result from a falling of the unit.
¡ For electrical work, please see that a licensed electrician executes the work while following the safety standards
related to electrical equipment, and local regulations as well as the installation instructions, and that only exclusive use circuits are used.
Insufficient power source circuit capacity and defective installment execution can be the cause of electric shocks
and fires.
¡ Accurately connect wiring using the proper cable, and insure that the external force of the cable is not conducted
to the terminal connection part, through properly securing it improper connection or securing can result in heat
generation or fire.
¡ Ta ke care that wiring does not rise upward, and accurately install the lid/service panel.It’s improper installation
can also result heat generation or fire.
¡ When setting up or moving the location of the air conditioner, do not mix air etc. or anything other than the
designated refrigerant (R22) within the refrigeration cycle.
Rupture and injury caused by abnormal high pressure can result from such mixing.
¡ Always use accessory parts and authorized parts for installation construction. Using parts not authorized by this
company can result in water leakage, electric shock, fire and refrigerant leakage.
¡ Ventilate the work area when refrigerant leaks during the operation.
Coming in contact with fire, refrigerant could generate toxic gas.
¡ Confirm after the foundation construction work that refrigerant does not leak.
If coming in contact with fire of a fan heater, a stove or movable cooking stove, etc., refrigerant leaking in the
room could generate toxic gas.
¡ Execute proper grounding. Do not connect the ground wire to a gas pipe, water pipe, lightning rod or a telephone
ground wire.
Improper placement of ground wires can result in electric shock.
¡ The installation of an earth leakage breaker is necessary depending on the established location of the unit.
No installing an earth leakage breaker may result in electric shock.
¡ Do not install the unit where there is a concern about leakage of combustible gas.
The rare even of leaked gas collecting around the unit could result in an outbreak of fire.
¡ For the drain pipe, follow the installation manual to insure that it allows proper drainage and thermally insulate it
to prevent condensation. Inadequate plumbing can result in water leakage and water damage to interior items.
¡ Install the outdoor unit so that the aluminum fins on the air heat exchanger cannot be touched. Failure to
observe this may result in injury.
¡ Do not place objects near the outdoor unit or allow leaves to gather around the unit. If there are objects or leaves
around the outdoor unit, small animals may enter unit and contact electrical parts resulting in break down,
emission of smoke or flame.
CAUTION
-
-
19
Page 22
5.1 Selection of location for installation
6.5 cm
5 cm
10 cm
60 cm MIN
Air intake
10 cm MIN
10 cm
MIN
Air outlet
Air
intake
No obstacles
(Service
space for
electrical
parts)
r
h
(1) Indoor unit
(a) Where there is no obstructions to the air flow and where the cooled
air can be evenly distributed.
(b) A solid place where the unit or the wall will not vibrate.
(c) A place where there will be enough space for servicing. (Where
space mentioned right can be secured)
(d) Where wiring and the piping work will be easy to conduct.
(e) The place where receiving part is not exposed to the direct rays of
the sun or the strong rays of the street lighting.
(f) A place where it can be easily drained.
(g) A place separated at least 1m away from the television or the radio.
(To prevent interfence to images and sounds.)
(2) Outdoor unit
(a) A place where good air circulation can be obtained and where rain, snow or sunshine will not directly strike the unit.
(b) A place where discharged hot air or unit’s operating sound will not be a nuisance to the neighborhood.
(c) A place where servicing space can be secured.
(d) A place where vibration will not be enlarged.
* Avoid installing in the following places.
•A place near the bedroom and the like, so that the operation noise will cause no trouble.
•A place where there is possibility of flammable gas leakage.
•A place exposed to strong wind.
Left
side
Right
side
(e) Do not install the unit near the seaside, or where there is possibility of chlorine gas generation.
Notes (1) Blowing out port and suction port on the back side of the unit can be
installed at a distance of 10cm from walls.
In case the barrier is 1.2m or above in height, or is overhead, the
(
sufficient space between the unit and wall shall be secured.
(2) When the unit is installed, the space of the following dimension and
above shall be secured.
(3) Limitations for one way piping length and vertical
height difference.
Model
Item
One way piping length (R)15 m
Outdoor
Vertical height
difference (h)
unit is lower
Outdoor unit
is higher
All models
5 m
5 m
)
-
20
-
Page 23
5.2 Installation of indoor unit
Look for the inside wall structures (Intersediate support or
pillar and firaly install the unit after level surface has been
checked.)
Mating mark for level surface
450
INSTALLATION SPACE (INDOOR UNIT) (FRONT VIEW)
Unit : mm
Piping hole( 65)Piping hole( 65)
Installation board
Indoor unit
53.5
Piping for Gas 380.6
Piping for Liquid 448.6
Drain hose 520( 16)
53.5
Space *
for service
Space
for service
44.5
252.2
7.5
8.3
Space for
service
50
Space for
service
100
102.5
585
102.5
133.5
450206.5
202450138
44.5
43.2
39.3
200
65
15
(1) Installation of installation board
(a) Fixing of installation board
Adjustment of the installation board in the horizontal
direction is to be conducted with four screws in a
temporary tightened state.
Standard hole
Adjust so that board will be level by turning the board
with the standard hole as the center.
* Leave extra space on the right side to enable removal of the lid screw.
(2) Drilling of holes and fixture sleeve (Option Parts)
When drilling the wall that contains a metal lath, wire lath or metal plate, be sure to use pipe hole sleeve sold separately.
(a) Drill a hole with ø65
whole core drill
Indoor sideOutdoor side
Note (1) Drill a hole with incline of 5 degree from
Cut off the sleeve
collar in case of
drawing piping out
to rear.
Cut off the sleeve
collar that can be
seen from beneath
the unit.
View of sleeve when installed
Sleeve
Indoor sideOutdoor side
Inclined
flange
Sealing
plate
Wall thickness
+ 1.5 cm
-
21
-
Page 24
(3) Preparation of indoor unit
Pipe
Drain hose
1. Remove the drain hose.2. Remove the drain cap.3. Insert the drain cap.4. Connect the drain hose.
Left Side PipingRight Side Piping
Lid
Screw *
Clamp
Terminal block
Left downward
Right
Rear
Downward
Left rear
Left
Wall
Gutter
Pipes storage area
(a) Mounting of connecting wires
1) Remove the lid.
2) Remove the wiring clamp.
3) Connect the connecting wire securely to the terminal block.
Use cable for interconnection wiring to avoid loosening
of the wires.
CENELEC code for cables Required field cables.
H05RNR3G1.5 (Example) or 245IEC57
HHarmonized cable type
05300/500 volts
RNatural-and/or synth. rubber wire insulation
NPolychloroprene rubber conductors insulation
RStanded core
4or5 Number of conductors
GOne conductor of the cables is the earth conductor
(yellow/green)
1.5Section of copper wire (mm
2
)
• Connect the connection wire securely to the terminal
block. If the wire is not affixed completely, contact will
be poor, and it is dangerous as the terminal block may
heat up and catch fire.
• Take care not to confuse the terminal numbers for indoor
and outdoor connections.
• Affix the connection wire using the wiring clamp.
4) Fix the connecting wire by wiring clamp.
5) Attach the lid.
6) Close the air inlet panel.
1Brown
2Blue
For power supply, indoor outdoor
For power supply, indoor outdoor
(d) Cautions when piping from the left and the rear center of the unit
[ Top View ]
*Leave space to allow removal of this screw after installation.
(b) Shaping the pipe
• Hold the bottom of the pipe and change its direction
before stretching it and shaping it.
(c) Taping of the exterior
• Tape only the portion that runs through the wall.
Always tape the crossover wires with the pipe.
Piping is possible in the rear, left,
left rear, left downward, right or
downward direction.
Left rear piping
Left side pipingRight side piping
Right rear piping
[ Procedure for exchanging the drain hose ]
• Loosen and remove the
spring-type clamp.
• Do not place the power supply cords above the gutter, because the
air conditioner is structured in a way where condensation on the
back side is collected in to the drain pan before drainage.
• Remove with your hand or
a pair of pliers.
• Use a hexagonal wrench to
correctly insert the drain cap
which was removed in 2.
Caution: Be careful because
if the cap is not inserted
property, water leak may
occur.
• Do not make traps in the drain hose line.
Declining slope
• Loosen the spring-type clamp
and securely insert the drain
hose.
Caution: Be careful because if
the cap is not inserted properly,
water leak may occur.
Inverted slipe
Trap
-
22
-
Page 25
(e) Securing the indoor unit to the installation board
Installing steps
1.Hook the upper part
of the indoor unit to
the installation board.
2.The unit can be installed
simply by gently pushing in the lower part.
The marked portion of the
Indoor unit bese lower latch
Lid
Indoor unit
Installation
Latch (2 locations)
Installation
board
Indoor unit
base lower latch
How to remove the indoor unit from the installation board
•
Wall
board
1) Push up at the marked portion of the indoor unit base lower
latch, and slightly pull it toward you.
(both right and left hand sides)
(The indoor unit base lower latch can be removed from the in-
stallation board)
2) Push up the indoor unit upward. So the indoor unit will be
removed from the installation board.
(4) Removal and installation of the front panel
(a) Removing
(b) Fitting
(5) Open/close and detachment/attachment of air inlet panel
(a) To open, pull the panel at both ends of lower part and release
(b) To close, hold the panel at both ends of lower part to lower
(c) To remove, pull up the panel to the position shown in right
(d) To install, insert the air inlet panel arm into the slot on the front
• Remove the 2 set screws.
• Move the lower part of the panel forward and push upwards to
remove. (Remove the 3 latches in the upper section.)
• Do remove the air filter.
• Cover the body with the front panel.
• Push the circled portion at the front.
• Tighten the 2 set screws.
• Fit the air filter. Carry out in the above order.
latches, then pull up the panel until you feel resistance. (The
air inlet panel stops at approx. 60˚ open position.)
downward and push it slightly until the latch works, then push
the center portion slightly.
illustration and pull it toward you.
panel from the position shown in right illustration, hold the
panel at both ends of lower part, lower it downward slowly,
then push it slightly until the latch works and further push the
center portion slightly.
Set screws
-
23
-
Page 26
1 2
5.3 Installation of outdoor unit
(1) Make sure that the unit is stable in installation. Fix the unit to
stable base.
(2) Perfrom wiring, making wire terminal numbers conform to ter-
minal numbers of indoor unit terminal block.
1Brown
2Blue
For power supply, indoor outdoor
For power supply, indoor outdoor
5.4 Connection of refrigerant pipings
(1) Preparation
Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.
(a) Indoor unit side
(Do not
turn)
¡ Remove the flared nuts.
(on both liquid and gas sides)
Remove
(2) Connection of refrigerant piping
(a) Indoor unit side
• Connect firmly gas and liquid side
pipings by Torque wrench.
(b) Outdoor unit side
Remove
¡ Remove the flared nuts.
(on both liquid and gas sides)
(b) Outdoor unit side
• Connect firmly gas and liquid side
Press
¡ Install the removed flared nuts to the pipes to be
pipings by Torque wrench.
Terminal block
Interconnecting wire
Dimension A
Liquid side
(ø6.35): 9.0 dia
Gas side
(ø9.52): 13.0 dia
(ø12.7): 16.2 dia
connected, then flare the pipes.
Spanner
for fixing
the piping)
Torque
wrench
• Specified torquing value:
Liquid side (ø6.35) : 14~18N·m (1.4~1.8kgf·m)
Gas side (ø9.52): 34~42N·m (3.4~4.2kgf·m)
Gas side (ø12.7): 49~61N·m (4.9~6.1kgf·m)
• Specified torquing value:
Liquid side (ø6.35) : 14~18N·m (1.4~1.8kgf·m)
Gas side (ø9.52): 34~42N·m (3.4~4.2kgf·m)
Gas side (ø12.7): 49~61N·m (4.9~6.1kgf·m)
• Use one more spanner to fix the valve.
• Always use a Torque wrench and back up spanner to tighten the flare nut.
(3) Air purge
(a) Tighten all flare nuts in the pipings both indoor and outside wall so as not to cause leak.
(b) Connect service valve, charge hose, manifold valve and vacuum pump as is illustrated below.
(c) Open manifold valve handle Lo to its full width, and perform vacuum or evacuation.
Continue the vacuum or evacuation operation for 15 minutes or more and check to see that the vacuum gauge reads – 0.1 MPa
(– 76 cmHg).
(d) After completing vacuum operation, fully open service valve (Both gas and liquid sides) with hexagon headed wrench.
(e) Detach the charge hoses.
(f) Check for possible leakage of gas in the connection parts of both indoor and outdoor.
Stop valve
(Two-way valve)
Service port
Compound
(Gauge)
-76 cm Hg
Handle Lo
(pressure)
Stop value
(Three-way
value)
Charge hose
Pressure
gauge
Manifold
Valve
Handle Hi
(pressure)
Charge hose
Vacuum pump
-
24
-
Page 27
♦ Additional refrigerant charge
-
-
+
+
Screws
When refrigerant piping exceeds 7.5m conduct additional refrigerant charge after refrigerant sweeping.
7.5m over 15m:Additional charge amount per meter = 10g/m
[Example]
How much amount of additional charge for 15m piping?
(15 – 7.5)m × 10g/m=75g 75g for additional charge
(4) Insulation of connecting portion
(a) Cover the connection portion of the refrigerant piping with the
pipe cover and seal them.
If neglecting to do so, moisture occurs on the piping and water
will drip out.
(b) Finishing and fixing
1) Tie up the piping with wrapping tape, and shape it so that it
conforms to which the pipe is attached.
2) Fix them with clamps as right figure.
5.5 Installation of remote control switch
(1) Mounting method of battery
• Uncover the remote control switch, and mount the batteries [R03(AAA, Micro)×2 pieces] in the body regularly.
(Fit the poles with the indication marks, , & . without fail)
Battery
To cover the connecting portion with insula-
Vinyl tape
tion materials, cut upper portion and then seal
it with insulation materials.
Insulation
Refrigerant piping
Electrical wiring
Covering tape
Drain hose
Tapping screw
Cover the exterior portion with covering tape and shape the piping so it
will match the contours of the route
that the piping to take. Also fix the
wiring and pipings to the wall with
clamps.
(b) Fixing to pillar or wall
• Conventionally, operate the wireless remote control by
holding in your hand.
• Avoid installing it on a clay wall etc.
Cover
5.6 Earthing work
• Earth work shall be carried out without fail in order to prevent electric shock and noise generation.
• The connection of the earth cable to the following substances causes dangerous failures, therefore it shall never be done.
City water pipe, Town gas pipe, TV antenna, lightning conductor, telephone line, etc.
-
25
-
Page 28
5.7 Test run
(1) Conduct trial run after confirming that there is no gas leaks.
(2) When conducting trial run set the remote control thermostat to continuous operation position. However when the power source is
cut off or when the unit’s operation switch is turned off or was turned to fan operation position, the unit will not go into operation
in order to protect the compressor.
(3) Explain to the customer on the correct usage of the air conditioner in simple layman’s terms.
(4) Make sure that drain flows properly.
(5) Standard operation data
Model
Item
Low pressure (MPa)0.46~0.660.41~0.61
Temp. difference between
return air and supply air (°C)
Running current (A)3.44.9
Note (1) The data are measured at following conditions
Ambient air temperature
Indoor side: Cooling ... 27˚C DB, 19˚C WB
Outdoor side: Cooling ... 35˚C DB, 24˚C WB
SRK10CFV-4SRK13CFV-4
10~1213~15
(220V)
5.8 Precautions for wireless remote control installation and operation
(1) Wireless remote control covers the following distances:
(a) When operating facing the air conditioner:
7 m or less
or less
Wireless remote
control
7 m or less
or less
or less
If the distances exceed the area indicated above, be sure to check
the receiver status.
(b) When manipulating the remote control mounted on a
wall:
Make sure that it works normally (i.e., transmission/reception
signal is audible) before mounting.
Notes (1) The remote control is correctly facing the
sensing element of the air conditioner when being
manipulated.
(2) The typical coverage is indicated (in the left
illustration). It may be more or less depending on
the installation.
(3) The coverage may be less or even nil. If the sensing
element is exposed to strong light, such as direct
sunlight, illumination, etc., or dust is deposited on
it or it is used behind a curtain, etc.
Receiver
Remote control
available in this area.
-
26
-
Page 29
6MAINTENANCE DATA
6.1 Trouble shooting
(1) Trouble shooting to be performed prior to exchanging PCB, (Printed circuit board) [Common to all models]
All the models described in this chapter are controlled by a microcomputer. When providing maintenance service to customers it
is necessary to understand the function controlled by a microcomputer thoroughly, so as not to mistakenly identify correct opera-
tions as mis-operations. It is also necessary to perform the following simple checks before conducting detailed checks or exchang-
ing printed circuit board.
Before exchanging Printed circuit board
Claim call from the user
Ascertain the nature of the claim.
Ascertain the operation status.
Is this nonsense claim?
No
Operate the unit.
Does the trouble occur again?
YES
Temporarily turn off the power source and
turn it on again in about 1 min. and turn the
unit on again.
Does the trouble occur again?
YES
Disconnect connectors and connect them
again.
Operate the unit again after confirming that the fuse
and the varistor equipped on PCB does not burn out.
YES
No
No
Unit did not cool, etc.
¡ Is the power on?
¡ Is the thermostat setting correct?
(Not too high?)
¡ Is the unit in a timer operation?
¡ Does user understand function?
etc.
¡ Explain the function of the unit to user.
No need for PCB change
Check further the status when the trouble occured
(such as the timer of occurence, power failures, thunder, use status of other electrical appliances, etc).
Clarify the reason for the problem and explain it thoroughly to the user.
No need for PCB change
Microcomputer runaway due to power source
conditions is a possible cause.
Does the trouble occur again?
YES
Carry out checks according to detailed
check process (See later page)
-
No
27
No need for PCB change
The cause is defective connector contact.
-
Page 30
(2) Indication of Self Diagnosis (Indoor unit)
RUN light is flashing.
(1 Time flash.)
TIMER light is
lights
continuously.
RUN light is flashing.
(2 Time flash.)
RUN light is flashing.
(6 Time flash.)
Connect of Defect
Abnormality of heat
exchanger sensor.
Abnormality of room
temperature sensor.
Abnormality of indoor
fan motor.
Place of defect
¡ Disconnection of heat exchanger sensor.
¡ Disconnection of room temperature
sensor.
¡ Fan motor is defective.
¡ Printed circuit board is defective.
RUN light is
lights
continuously.
TIMER light is flashing.
(2 Time flash.)
Abnormality of outdoor
unit.
¡ Compressor is defective.
¡ Capacitor is defective.
¡ Gas is short.
(3) Troubleshooting
Abnormality of outdoor unit[Compressor malfunction of insufficient gas (refrigerant)]
Does compressor operate?
Yes
Is refrigerant circulation
volume normal?
Yes
Is abnormality the same after
gas charging?
Yes
Clogging of capillary tube. etc.
No
No
Insufficient gas.
Is protective device normal?
Ye s
Is capacitor normal?
Ye s
Replace compressor.
No
No
Replace protective device.
Replace capacitor.
Abnormality of indoor fan motor(Fan motor defective, printed circuit board defective)
Is the connector connection
good?
Yes
Is voltage being applied to the
fan motor?
Yes
The fan motor is defective.
No
No
Repair the connector.
The indoor circuit board
is defective.
Abnormality of sensorDisconnection of sensor and defective connection of connector
Is connection to connector
good?
Ye s
Is sensor resistance value
normal?
Ye s
Replace PCB.
No
No
Repair connector.
Replace sensor.
-
28
Chart for sensor temperature
resistance characteristics
(Disconnection)
Resistance value
(kΩ)
(Short circuit)
Temperature (°C)
-
Page 31
(4) Trouble Diagnostic Procedures
Unit malfunctions or
does not stop.
Indoor light of
indoor unit does not
illuminate.
Outdoor fan does not
operate.
Runaway of micro-
computer
Check receptacle voltage.
Check if PCB fuse is blown.
Check varistor
Replace PCB.
Check voltage with fan
connector.
No
Remove receptacle.
Insert it after 3 min.
and operate.
Replace fuse.
Replace varistor.
Ye s
Normal operation.
Check capacitor.
Normal
Replace fan motor.
No change.
Abnormal
Replace PCB.
Microcomputer rarely
mis-starts even during
times or power supply
or power failure, but, it
can sometimes occur
during those times. If it
occurs, check the operation, when the result is
positive then proceed as
normal.
Replace capacitor.
Replace PCB.
(5) Trouble shooting chart for the room temperature sensor (Th1), heat exchanger sensor (Th2)
UnitsensorOperation
Room temperature
(1)
sensor
(Th1) except for
“continuous” thermal
setting.
Indoor unit
Heat exchanger
sensor (Th
Note (1) When the room temperature sensor (Th
2)
Cooling
Cooling
1) will not operate normally. Cooling operation may be run continuously by putting the thermostat setting on “CONTINUOUS”
Short circuitBroken connection
Continuous Cooling operation
¡ Cannot be turned ON/OFF by thermostat
¡ When FM
Cooling will not operate.
I is on. “AUTO” is continuously
Hi
Function
Cooling will not operate
I : continuous operation
¡ FM
¡ CM,FMo: stopped
Cooling will operate
¡ Heat exchanger frost preventer begins to operate
¡ Cools alternately for 10 minutes, stopping for 3
minutes.
-
29
-
Page 32
(6) How to make sure of remote control
(1)
Is remote
control
normal?
YES
Again pushing
operating switch
NO
Remote control
defects
Note (1) How to check the remote control.
(a) Press the reset switch of remote control.
(b) If the almost normal if entire display of remote control is shown after 1
indication.
Operating the
unit?
NO
Does operating Unit
ON/OFF button
Operating the unit?
YES
Replace the
display
Operating the
unit by remote
control?
NO
Remote control
defects
YES
NO
YES
Abnormal is not
fount
Control unit defects
It is normal
6.2 Servicing
(1) Evacuation
The evacuation is an procedure to purge impurities ...... noncondensable gas, air, moisture from the refrigerant equipment by using
a vacuum pump. Since the refrigerant R22 is very insoluble in water, even a small amount of moisture left in the refrigerant
equipment will freeze, causing what is called water clogging.
¡ Evacuation procedure
(a) Check to ensure that there is no internal pressure in the unit. If there is an internal pressure, it
should be relieved through the check joint.
(b) Connect the service hoses of the gauge manifold to the check joint of the gas & liquid piping.
(c) Connect a vacuum pump to the charge hose A. Repeat evacuation in the following sequence.
Start the vacuum pump
Operate the vacuum pump for more than 15 minutes after –0.1MPa
(–76 cmHg) is indicated.
Check joint
Close low pressure valve 1 of gauge manifold.
Stop the vacuum pump.
Notes (1) Do not use the refrigerant pressure to expel air.
(2) Do not use the compressor for evacuation.
(3) Do not operate the compressor in the vacuum condition.
Service hose
Charge hose
Vacuum
pump
Liquid side
Gas side
Gauge
manifold
Refrigerant
cylinder
-
30
-
Page 33
(2) Refrigerant charge
(a) Discharge refrigerant entirely from the unit and evacuate the unit.
Note: Addition of refrigerant without evacuation is unreasonable, because it will result in low charge or overcharge.
(b) Keep the gauge manifold and connect a refrigerant cylinder to the unit.
(c) Record the weight of the refrigerant cylinder on the balance. This is necessary for making sure of the charged refrigerant
amount.
(d) Purge air from the charge hose A .
Firstly loose the connecting portion of the charge hose A at the gauge manihold side and open the valve 3for a few
seconds, and then immediately retighten it after observing that gas is blow out from the loosened portion.
(e) Open the valve 1 and 3 after discharging air from the charge hose A , then the gas refrigerant begins flowing from the
cylinder into the unit. Be sure to erect the refrigerant cylinder upright to let gas refrigerant flow into the unit.
(f)When refrigerant has been charged into the system to some extent, refrigerant flow becomes stagnant, when that happens,
start the compressor in cooling cycle until the unit is filled with gas to the specified weight.
(g) Making sure of the refrigerant amount, close the valve 3.
(h) Disconnect the charge hose from the unit. Cover the valve ports of the refrigerant piping with caps and tighten them securely.
(i)Check for gas leakage applying a gas leak detector along the piping line.
(j)Start the air conditioner and make sure of its operating condition ...... high side and low side pressures and temperature