Mitsubishi Heavy Industries SRK10CDV-1 Release Note

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2004 ROOM AIR-CONDITIONING
TECHNICAL HANDBOOK

TABLE OF CONTENTS
SRK10CDV-1
SRC10CDV-1
SRK10CDV-4
SRC10CDV-4
SRK13CDV-1
SRC13CDV-1
SRK13CDV-4
SRC13CDV-4
SRK06CC-1
SRC06CC-1
SRK06CC-4
SRC06CC-4
SRK07CC-1
SRC07CC-1
SRK07CC-4
SRC07CC-4
SRK09CC-1
SRC09CC-1
SRK09CC-4
SRC09CC-4
SRK12CC-1
SRC12CC-1
SRK12CC-4
SRC12CC-4
SRK50A
SRC50CA
SRK56A
SRC56CA
SRK56A-4
SRC56CA-4
1
31
63
90
90
98
98
108
108
116
116
124
124
132
132
142
150
150
Technical manual
Item
Models Parts list Recommendable
spare parts price list
*Models with “-4” have the “HEAVY DUTY” logo added on the front lower rightside.

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CONTENTS
1. GENERAL INFORMATION .............................................................................. 2
1.1 Specific features ....................................................................................... 2
1.2 How to read the model name ................................................................... 2
2. SELECTION DATA .......................................................................................... 3
2.1 Specifications ........................................................................................... 3
2.2 Range of usage & limitations .................................................................. 6
2.3 Exterior dimensions ................................................................................. 6
2.4 Piping system ........................................................................................... 8
2.5 Selection chart .......................................................................................... 9
3. ELECTRICAL DATA ........................................................................................ 10
3.1 Electrical wiring ........................................................................................ 10
4. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER .................. 12
5. APPLICATION DATA ....................................................................................... 19
5.1 Selection of location for installation ....................................................... 20
5.2 Installation of indoor unit......................................................................... 21
5.3 Installation of outdoor unit ...................................................................... 23
5.4 Refrigerant piping ..................................................................................... 23
5.5 Test run ...................................................................................................... 25
5.6 Precautions for wireless remote controller installation and
operation ................................................................................................... 25
6. MAINTENANCE DATA .................................................................................... 26
6.1 Trouble shooting ....................................................................................... 26
6.2 Servicing.................................................................................................... 29
TECHNICAL MANUAL
MODELS SRK10CDV-1 SRK10CDV-4 SRK13CDV-1 SRK13CDV-4

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1GENERAL INFORMATION
1.1 Specific features
The “Mitsubishi Daiya” room air-conditioner: SRK series are of split and wall mounted type and the unit consists of indoor unit and
outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling equipment with operation control
switch and the outdoor unit is composed of condensing unit with compressor.
(1) Remote control flap
The flap can be automatically controlled by operating wireless remote controller.
¡Air scroll: Flap operation is automatically control.
¡Swing: This will swing the flap up and down.
¡Memory flap: Once the flap position is set, the unit memorizes the position and continues to operate at the same position from
the next time.
(2) Automatic Operation
When the remote control switch is set on “auto( ) ”, it will either automatically decide operation mode such as cooling and thermal
dry, or operate in the operation mode before it has been turned to automatic control.
(3) Self diagnosis function
¡We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as
follows.
1.2 How to read the model name
Example : SR K 10 C DV - 1
Series No.
Cooling only type
Product capacity
Wall mounted type
Split type room air conditioner
Abnormality of room
temperature thermistor.
TIMER lamp is
light up.
RUN lamp is flashing.
(1 Times/ 8sec.)
RUN lamp is flashing.
(2 Times/ 8sec.)
Abnormality of heat
exchanger thermistor.
Abnormality of indoor
fan motor.
RUN lamp is flashing.
(6 Times/ 8sec.)
t
t
t
Abnormality of outdoor
unit.
RUN lamp is light
up.
TIMER lamp is flashing.
(2 Times/ 8sec.)
t
No lamps will flashing
when the unit is operating.
}

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2SELECTION DATA
2.1 Specifications
Model SRK10CDV-1, -4 (Indoor unit)
SRC10CDV-1, -4 (Outdoor unit)
(2) The operation data are applied to the 220 V districts respectively.
(3) The refrigerant quantity to be charged includes the refrigerant in 7.5 m connecting piping.
(Purging is not required even in the short piping.)
If the piping length is longer, when it is less than 10 m, add 10 g refrigerant per meter and when it is 10 to 15 m, add 30 g refrigerant per meter.
(4) Expressed in sound pressure level.
Notes (1) The data are measured at the following conditions.
Item
Model SRK10CDV-1, -4 SRC10CDV-1, -4
Cooling capacity(1) W2638
Power source 1 Phase, 220V, 50Hz
Cooling input kW 0.803
Running current (Cooling) A 4.2
Inrush current A 18.1
COP (In cooling) 3.29
Noise level(4) dB (A) 39 46
Exterior dimensions mm 250 ×815 ×247 540 ×720 ×290
Height ×Width ×Depth
Color Cool white Stucco white
Net weight kg 9.0 32
Refrigerant equipment –RMC201A002
Compressor types & Q’ty
Motor kW –0.75
Starting method –Line starting
Heat exchanger Louver fins & tubing
Refrigerant control Capillary tubes
Refrigerant(3) kg R22 0.75 (Pre-Charged up to the piping length of 7.5m)
Refrigerant oil R0.35 (ATMOS M60 or SUNISO 4GDID)
Air handling equipment Tangential fan ×1Propeller fan ×1
Fan type & Q’ty
Motor W 14 15
Air flow (at High) CMM 8.5 30.0
Air filter, Q’ty Polypropylene net (washable) ×2–
Shock & vibration absorber –Cushion rubber (for compressor)
Electric heater ––
Operation control Wireless-Remote controller –
Operation switch
Room temperature control MC. Thermostat –
Pilot lamp RUN (Green), TIMER (Yellow), –
HI POWER (Green), ECONO (Orange)
Safety equipment Frost protection, Compressor overheat protection
Fan motor error protection
O.D mm (in) Liquid line: ø6.35 (1/4") Gas line: ø9.52 (3/8")
Connecting method Flare connecting
Attached length of piping Liquid line: 0.4 m –
Gas line : 0.33 m
Insulation Necessary (Both sides)
Drain hose Connectable
Power source cord 2.5 m (3 cores with Earth)
Size ×Core number 1.5 mm2×3 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts –
Connection
wiring
Operation
data
(1)
Refrigerant
piping
Item Indoor air temperature Outdoor air temperature Standards
Operation DB WB DB WB
Cooling 27°C19°C35°C24°CISO-T1, JIS C9612

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(2) The operation data are applied to the 220 V districts respectively.
(3) The refrigerant quantity to be charged includes the refrigerant in 7.5 m connecting piping.
(Purging is not required even in the short piping.)
If the piping length is longer, when it is less than 10 m, add 10 g refrigerant per meter and when it is 10 to 15 m, add 30 g refrigerant per meter.
(4) Expressed in sound pressure level.
Notes (1) The data are measured at the following conditions.
Item
Model SRK13CDV-1 SRC13CDV-1
Cooling capacity(1) W3500
Power source 1 Phase, 220V, 50Hz
Cooling input kW 1.16
Running current (Cooling) A 6.1
Inrush current A 33.2
COP (In cooling) 3.28
Noise level(4) dB (A) 41 49
Exterior dimensions mm 250 ×815 ×247 640 ×850 ×290
Height ×Width ×Depth
Color Cool white Stucco white
Net weight kg 9.0 40
Refrigerant equipment –RMC201A001
Compressor types & Q’ty
Motor kW –1.3
Starting method –Line starting
Heat exchanger Louver fins & tubing
Refrigerant control Capillary tubes
Refrigerant(3) kg R22 1.2 (Pre-Charged up to the piping length of 7.5m)
Refrigerant oil R0.48 (SUNISO 4GSD)
Air handling equipment Tangential fan ×1Propeller fan ×1
Fan type & Q’ty
Motor W 14 35
Air flow (at High) CMM 9.0 39.5
Air filter, Q’ty Polypropylene net (washable) ×2–
Shock & vibration absorber –Cushion rubber (for compressor)
Electric heater ––
Operation control Wireless-Remote controller –
Operation switch
Room temperature control MC. Thermostat –
Pilot lamp RUN (Green), TIMER (Yellow), –
HI POWER (Green), ECONO (Orange)
Safety equipment Frost protection, Internal thermostat (for compressor)
Fan motor error protection
O.D mm (in) Liquid line: ø6.35 (1/4") Gas line: ø12.7 (1/2")
Connecting method Flare connecting
Attached length of piping Liquid line: 0.4 m –
Gas line : 0.33 m
Insulation Necessary (Both sides)
Drain hose Connectable
Power source cord 2.5 m (3 cores with Earth)
Size ×Core number 1.5 mm2×3 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts –
Connection
wiring
Operation
data
(1)
Refrigerant
piping
Item Indoor air temperature Outdoor air temperature Standards
Operation DB WB DB WB
Cooling 27°C19°C35°C24°CISO-T1, JIS C9612
Model SRK13CDV-1 (Indoor unit)
SRC13CDV-1 (Outdoor unit)

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(2) The operation data are applied to the 220 V districts respectively.
(3) The refrigerant quantity to be charged includes the refrigerant in 7.5 m connecting piping.
(Purging is not required even in the short piping.)
If the piping length is longer, when it is less than 10 m, add 10 g refrigerant per meter and when it is 10 to 15 m, add 30 g refrigerant per meter.
(4) Expressed in sound pressure level.
Notes (1) The data are measured at the following conditions.
Item
Model SRK13CDV-4 SRC13CDV-4
Cooling capacity(1) W3810
Power source 1 Phase, 220V, 50Hz
Cooling input kW 1.16
Running current (Cooling) A 6.1
Inrush current A 33.2
COP (In cooling) 3.28
Noise level(4) dB (A) 41 49
Exterior dimensions mm 250 ×815 ×247 640 ×850 ×290
Height ×Width ×Depth
Color Cool white Stucco white
Net weight kg 9.0 40
Refrigerant equipment –RMC201A001
Compressor types & Q’ty
Motor kW –1.3
Starting method –Line starting
Heat exchanger Louver fins & tubing
Refrigerant control Capillary tubes
Refrigerant(3) kg R22 1.2 (Pre-Charged up to the piping length of 7.5m)
Refrigerant oil R0.48 (SUNISO 4GSD)
Air handling equipment Tangential fan ×1Propeller fan ×1
Fan type & Q’ty
Motor W 14 35
Air flow (at High) CMM 9.0 39.5
Air filter, Q’ty Polypropylene net (washable) ×2–
Shock & vibration absorber –Cushion rubber (for compressor)
Electric heater ––
Operation control Wireless-Remote controller –
Operation switch
Room temperature control MC. Thermostat –
Pilot lamp RUN (Green), TIMER (Yellow), –
HI POWER (Green), ECONO (Orange)
Safety equipment Frost protection, Internal thermostat (for compressor)
Fan motor error protection
O.D mm (in) Liquid line: ø6.35 (1/4") Gas line: ø12.7 (1/2")
Connecting method Flare connecting
Attached length of piping Liquid line: 0.4 m –
Gas line : 0.33 m
Insulation Necessary (Both sides)
Drain hose Connectable
Power source cord 2.5 m (3 cores with Earth)
Size ×Core number 1.5 mm2×3 cores (Including earth cable)
Connecting method Terminal block (Screw fixing type)
Accessories (included) Mounting kit
Optional parts –
Connection
wiring
Operation
data
(1)
Refrigerant
piping
Item Indoor air temperature Outdoor air temperature Standards
Operation DB WB DB WB
Cooling 27°C19°C35°C24°CISO-T1, JIS C9612
Model SRK13CDV-4 (Indoor unit)
SRC13CDV-4 (Outdoor unit)

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2.2 Range of usage & limitations
2.3 Exterior dimensions
Indoor return air temperature
(Upper, lower limits)
Refrigerant line (one way) length Max. 15m
All models
Refer to the selection chart
Power source voltage Rating ±10%
Voltage at starting Min. 85% of rating
Frequency of ON-OFF cycle Max. 10 times/h
ON and OFF interval Max. 3 minutes
Outdoor air temperature
(Upper, lower limits)
Vertical height difference between
outdoor unit and indoor unit
Max. 5m (Outdoor unit is higher)
Max. 5m (Outdoor unit is lower)
Item
Models
(1) Indoor unit
Models SRK10CDV-1, 10CDV-4, 13CDV-1, 13CDV-4
Unit: mm
A
VIEW A
815
117.5 580 117.5
247
4.5
4.5
4.5
3
560
788
60 14.5
60
9
148.5
216.5216.5
8.2
44.5
236.1
5.7
450
450
67.5
42.7 47.2
175
44.5
216.5216.5
148.5
53.5
250
Piping for Gas
Terminal block
Piping hole right (left)
Drain hose 540 (ø16)
Piping for Liquid 465.1 (ø6.35)
Piping hole (ø65) Piping hole (ø65)
( )
10: ø9.52
13: ø12.7 397.1

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(2) Outdoor unit
Models SRC10CDV-1, 10CDV-4
Drain hole
286.4
12
50
290
49.6 43.5
850
203.1 510 136.9
476
Elogated hole
(2-12 x16)
314 12
328
Terminal block
Service valve (Liquid)
ø6.35 (1/4'')
Service valve (Gas)
ø12.7 (1/2'')
Ground
terminal
124 34.6
20˚
20˚
42.7
100.3
15
640
14
Unit: mm
Model SRC13CDV-1, 13CDV-4
Unit: mm
290
540
14.4 47.4 42.6
264.5
71
404.5
510
720
17.8
Drain holes
50
12
39.7
99.9
340
312.5 13.5
14
139 2-16 x12
61.9
139.3 33.3
Flare connecting ø6.35 (1/4")
Service valve (Liquid)
40°
40°
Flare connecting ø9.52 (3/8")
Service valve (Gas)
Terminal block

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2.4 Piping system
Models SRK10CDV-1, 10CDV-4, 13CDV-1, 13CDV-4
Outdoor unitIndoor unit
Room temp.
thermistor
Heat
exchanger
Flare connecting
Heat
exchanger
thermistor
Piping
(Liquid)
ø6.35
Check joint
Service valve (Liquid)
Flare connecting
Cooling cycle
Heat
exchanger
Compressor
Capillary tube
Accumulator
Service valve
(Gas)
Capillary tube
( )
Piping
(Gas)
10 : ø9.52
13 : ø12.7

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2.5 Selection chart
Correct the cooling capacity in accordance with the conditions as follows. The net cooling capacity can be obtained in the following way.
Net capacity = Capacity shown on specification ✕ Correction factors as follows.
(1) Coefficient of cooling capacity in relation to temperatures
(2) Correction of cooling capacity in relation to one way length of refrigerant piping
It is necessary to correct the cooling capacity in relation to the one way piping length between the indoor and outdoor units.
14 16 18 20 22
15
20
25
30
35
40
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
43
24
ISO-T1 Standard ConditionIndoor air W.B. temperature °C W.B.
Cooling
Applicable range
Coefficient of cooling capacity in relation to temperature
Cooling operation
Outdoor air D.B.
temperature
°C D.B.
Piping length [m]
Cooling
7
1.0
10
0.99
15
0.975
How to obtain the cooling capacity
Example : The net cooling capacity of the model SRK13CDV-4 with the piping length of 15m, indoor wet-bulb temperature at 19.0˚C
and outdoor dry-bulb temperature 35˚C is Net cooling capacity = 3810 ✕0.975 ✕1.0 =3715 w
SRK13CDV-4 Length 15m Factor by air
temperatures

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3ELECTRICAL DATA
3.1 Electrical wiring
Models SRK10CDV-1, 10CDV-4
Power source
1 Phase 220V 50Hz
CM
52C
Printed circuit board
51C
FMo
BK
BK
T2
Th
2
T1
Th
1
BK
BKWH
WH
CNC
CNE
CNM CNW CNU
CNC
Sh1
52C352C4
Tr
N
52C
CNB
Y/GN
LB
Y1
5
3
WH
RD
BR
WH
BK
WH
WH
WH
WH
WH
RD
WH
BK
L2
2
3
1
L3
L1
Sh
CFO
ZNR
F
(3.15A)
CFI
Cc
OR
OR
Wireless
Display
R-Amp
HEAT
EXCHANGER
FM I
SM
Indoor unit Outdoor unit
Notes (1) : denotes magentized relay × : denotes demagnetized relay
(2) Th1is room temperature thermistor. Th2(the heat exchanger thermistor) is frost prevention thermistor.
Operation
Cooling
Relay symbol Control part
52C CM
Table of relay operations
Symbol Parts name Symbol Parts name
CCCapacitor for CM SM Flap motor
CFICapacitor for FMITh1, 2Thermistor
CFOCapacitor for FMOTr Transformer
CM Compressor motor ZNR Varistor
FFuse 51C Motor protector for CM
FMIFan motor (Indoor unit) 52C Magnetic contactor for CM
FMOFan motor (Outdoor unit)
Meaning of marks
BK Black
BL Blue
BR Brown
LB Light blue
YYellow
RD Red
OR Orange
WH White
Y/G Yellow/Green
Color symbol

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Model SRK13CDV-1, 13CDV-4
Power source
1 Phase 220V 50Hz
CM
52C
Printed circuit board
FMo
BK
BK
T2
Th2
T1
Th1
BK
BKWH
WH
CNC
CNE
CNM CNW CNU
CNC
Sh1
52C352C4
Tr
N
52C
CNB
Y/GN
LB
Y1
5
3
WH
RD
BR
WH
BK
WH
WH
WH
WH
WH
RD
WH
BK
L2
L3
L1
Sh
CFO
ZNR
F
(3.15A)
CFI
Cc
OR
OR
Wireless
Display
R-Amp
HEAT
EXCHANGER
FM I
SM
Indoor unit Outdoor unit
Symbol Parts name Symbol Parts name
CCCapacitor for CM SM Flap motor
CFICapacitor for FMITh1, 2Thermistor
CFOCapacitor for FMOTr Transformer
CM Compressor motor ZNR Varistor
FFuse 52C Magnetic contactor for CM
FMIFan motor (Indoor unit)
FMOFan motor (Outdoor unit)
Meaning of marks
BK Black
BL Blue
BR Brown
LB Light blue
YYellow
RD Red
OR Orange
WH White
Y/G Yellow/Green
Color symbol
Notes (1) : denotes magentized relay × : denotes demagnetized relay
(2) Th1is room temperature thermistor. Th2(the heat exchanger thermistor) is frost prevention thermistor.
Operation
Cooling
Relay symbol Control part
52C CM
Table of relay operations

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LO
MED
HI
AUTO
HI POWER ECONO
ON OFF
AM PM
HI POWER TEMP ECONO
AIR FLOW
CANCEL
ON OFF
RESERVE
TIMER
TIME ACL
FAN SPEED
ON
MODE
LO
MED
HI
AUTO
TIME
OFF
HI POWER ECONO
ON OFF
AM PM
FAN SPEED button
Each time the button is pushed, the indi-
cator is switched over in turn.
•The above illustration shows all controls, but in practice
only the relevant parts are shown.
OPERATION MODE select button
Each time the button is pushed, the indi-
cator is switched over in turn.
AIR FLOW button
This button changes the flap mode. When
pressed, this button changes the mode in the
following order:
ON/OFF button
Press for starting operation, press again for
stopping.
HI POWER button
This button changes the HI POWER mode.
ECONOMY button
This button changes the ECONOMY mode.
RESET switch
Switch for resetting microcomputer.
ON TIMER button
This button selects ON TIMER operation.
Clock switch
This switch for setting the clock.
OFF TIMER button
This button selects OFF TIMER operation.
TEMPERATURE button
This button sets the room temperature.
(This button changes the present time and
TIMER time.)
CANCEL button
This button cancels the ON timer and OFF
timer.
RESERVE button
This button sets the present time and
TIMER time.
SIndication section
OPERATION MODE Indicator
Indicates selected operation with lamp.
[ (Auto) • (Cool) • (Fan) • (Dry)]
TEMPERATURE Indicator
Indicates set temperature.
(Does not indicate temperature when operation
mode is on AUTO)
FAN SPEED Indicator
Indicates set air flow rate with lamp.
AIR FLOW Indicator
Shows selected flap mode.
HI POWER MODE indicator
Indicates during Hi power mode operation.
ECONOMY MODE indicator
Indicates during economy mode operation.
ON TIMER Indicator
Indicates during ON TIMER operation.
Clock Indicator
Indicates present time or timer setting time.
OFF TIMER Indicator
Indicates during OFF TIMER operation.
Models All models
Remote controller
SOperation section
(Air scroll) (SWING)
4OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER
(1) Operation control function by remote controller

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Unit indication section
Models All models
RUN HIPOWER ECONO TIMER
RUN light (green)
• Illuminates during operation.
TIMER light (yellow)
Illuminates during TIMER operation.
ECONOMY light (orange)
Illuminates during ECONOMY operation.
HI POWER light (green)
Illuminates during HI POWER operation.
(2) Back-up switch
When the remote controller batteries become weak, or if the remote controller is lost or malfunctioning, this switch may be used
to turn the unit on and off.
(a) Operation
Push the switch once to place the unit in the automatic mode. Push it once more to turn the unit off.
(b) Details of operation
The unit will go into the automatic mode in which it automatically determines, from room temperature (as detected by
sensor), whether to go into the cooling or thermal dry modes.
(3) Power blackout auto restart function
(a) Power blackout auto restart function is that records the operational status of the air-conditioner immediately prior to it being
switched off by a power cut, and then automatically resumes operations at that point after the power has been restored.
(b) The following settings will be cancelled:
1) Timer settings
2) High-power operations
Notes (1) The power blackout auto restart function is set at on when the air-conditioner is shipped from the factory.
Consult with your dealer if this function needs to be switched off.
(2) When power failure ocurrs, the timer setting is cancelled. Once power is resumed, reset the timer.
(3)
If the jumper wire (J7) “REMOTE/AUTORESTART” is cut, auto restart is disabled. (See the diagram at right)
Function Room temperature
Operation mode
setting Fan speed Flap Timer switch
Cooling About 25ºC
Thermal dry About 25ºC
Auto Auto Continuous
ON/OFF button

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(5) Comfort timer setting
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
comfort 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 thermistor) and the setting temperature. (Max. 60
minutes)
Operation mode Operation start time correction value (Min.)
3 < Room temp. – Setting temp. 1 < Room temp. – Setting temp. =
<3 Room temp. – Setting temp. = <1
At cooling +5 No change –5
Notes (1) At 5 minutes before the timer ON time, operation starts regardless of the temperature of the room temperature thermistor (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 pleasant reservation operation, both the operation lamp and timer lamp illuminate and the timer lamp goes off after expiration of the timer, ON setting
time.
(4) Flap control
Control the flap by AIRFLOW button on the wireless remote controller.
(a) Air scroll
The flap will be automatically set to the angle of air flow best to operation.
1) Starting time of operation
2) When not operating
The flap returns to the position of air flow directly below, when operation has stopped.
(b) Memory flap
While the flap is operating if the AIRFLOW button is pushed once, it stops swinging at an angle.
As this angle is memorized in the microcomputer, the flap will be automatically set to the angle when next operation is
started.
¡Recommendable stopping angle of the flap
(c) Swing flap
Flap moves in upward and downward directions continuously.
Horizontal
blowing
COOL•DRY
Corrects the starting time of next operation by
calculating the temperature difference.
(Example) Cooling
Room temperature
Setting temperature
Operation starting time
Time Setting time 15 min. 10 min. 5 min.
earlier earlier earlier
¡If the difference (= Room temperature – Setting tempera-
ture) is 4ºC, the correction value is found to be +5 min-
utes 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 Correction value
start time
sDuring cooling andt
dry operation
Thick line : Rapid movement
Thin line : Slow movement
Stops for approximately
5 seconds in the
horizontal position.

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(6) Outline of cooling operation
(a) Operation of major fanctinal components
(b) Fan speed switching
1) Auto fan control
The indoor fan is automatically controlled in accordance with the difference between the room temperature (detected
by the room temperature thermistor) and the termostat setting as shown below.
(c) Thermostat operation
The compressor and outdoor fan and turned on and off as shown below according to the temperature setting.
(d) High Power operation ( “HI POWER” button on the remote controller : ON)
The following operation is performed for 15 minutes without relation to the set temperature or fan speed setting.
(e) ECONO Operation ( “ECONO” button on the remote controller : 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 HI POWER operation.
(2) Protective functions will actuate with priority even during the HI POWER operation.
Indoor fan motor
Flaps
Display
52C
Outdoor fan motor
ON
ON or OFF
Lights up
OFF
OFF
ON
ON or OFF
Lights up
ON
ON
OFF
Stop position control
Lights up or flashes
OFF
OFF
When the compressor
command is OFF
When the compressor
command is ON
When the compressor goes
OFF due to an abnormal stop.
Functional
components
Item
Air scroll
Swing flap
Swing stop
Auto fan control
Speed 5
Speed 5
Speed 5
Speed 3
Speed 3
Speed 3
AUTO HIGH MED
Speed 2
Speed 2
Speed 2
LOW
Flow control
Fan speed switching
Speed 4
Speed 3
Speed 2
Thermostat setting point
Speed 5
+1 +2 +3 +4
OFF
ON
Set temp.
-1
Room temp.
Compressor
outdoor fan
Indoor unit fan
Outdoor unit fan
Compressor
Speed 6 fixed
ON
ON
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

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16
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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.
(c) 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.
(7) Outline of dehumidifying operation
(a) Choose the appropriate operation block area by the difference between room temperature and thermo-
stat setting temperature as shown below.
¡Operation block area
(b) Start up operation
ON
OFF
OFF
036912
ON
OFF
OFF
012
Compressor
and
outdoor fan
Set fan speed
Indoor fan
Start Temperature check Start Temperature check
Compressor
and
outdoor fan
Set fan speed
Indoor fan
Operation block decision
C.D Block A.B Block
minutes
minutes
Speed 1Speed 1
20
seconds
ON
OFF
OFF
048
ON
OFF
OFF
08
Compressor
and
outdoor fan
Indoor fan
D Block
Compressor
and
outdoor fan
Indoor fan
C Block
Compressor
and
outdoor fan
Indoor fan
B Block
Compressor
and
outdoor fan
Indoor fan
A Block
20 seconds 20 seconds
minutes
minutes
Start Temperature check Start Temperature check
Operation block decision
20 seconds
minutes
minutes
Start Temperature check Temperature check
Operation block decision
Start
Speed 1
Speed 1
OFF
OFF
08
ON
OFF
OFF
038
Speed 1
Speed 1
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
(d) ECONO Operation ( “ECONO” button on the remote controlle : ON)
The set temperature changes as shown at right, and
the indoor unit fan speed is set on speed 2.
D Block C Block B Block A Block
–2 0 +3
Room temp. – Setting temp.(deg)

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17
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(8) Automatic operation
(a) 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.)
(9) Outline of fan operation
(a) Operation of major fanctional components
(b) High Power operation (“HI POWER” button on the remote controller : ON)
The following operation is performed for 15 minutes without relation to the set fan speed.
52C
Indoor fan motor
Outdoor fan motor
Flaps
Speed 6 Speed 5 Speed 5
OFF
OFF
ON or OFF
Speed 3 Speed 2 Speed 1
High power AUTO HIGH MED LOW ECONO
Functional
components
Fan speed switching
Indoor unit fan
Outdoor unit fan
Compressor
Speed 6 fixed
OFF
OFF
Note (1) Protective functions will actuate with priority even during the HI POWER operation.
Room temperature<26ºC 26ºC<
=Room temperature
Operation mode Dry Cooling
(b) 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.
(c) 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.
(d) Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals
of the wireless remote controller and the setting temperature.
Signals of wireless remote controller (Display)
–6 –5 –4 –3 –2 –1 ±0+1+2+3+4+5+6
Setting Cooling 19 20 21 22 23 24 25 26 27 28 29 30 31
temperature Dehumidifying 19 20 21 22 23 24 25 26 27 28 29 30 31

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(10) Protective control function
(a) Dew condensation prevention control for cooling operation
This prevents dew condensation, in the indoor unit, from occurring.
1) Operating condition: when 52C is kept ON for 30 min. after the unit starts operation.
2) Operation content: forces the indoor fan to change from Speed 1 to Speed 2.
3) Resetting condition: When 52C is off, or when dew condensation prevention control has been operating continu-
ously for 30 minutes.
(b) 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 conse-
quently 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 (Th2)
and timer (built into micro computer circuit) functions.
Also indoor fan is changed over to speed 1.
CM, FMOstoppage condition
1Temperature of heat exchanger is
2.5˚C or lower.
2As least 3 minutes has passed since
the compressor started.
Indoor heat exchanger
temperature (˚C)
CM, FMOre-starting condition
1Temperature of heat exchanger is
8˚C or higher.
2As least 3 minutes has passed since
the compressor stopped.
Set fan
speed
speed 1
(d) Self diagnosis function
When something abnormal happens on the outdoor unit, indoor unit fan motor and each thermistor (heat exchanger, room
temperature, ) it will be indicated by flashing lamps.
1) Abnormality of outdoor unit: When the indoor heat exchanger temperature does not fall to 25ºC or below for 40
minutes after 5 minutes have elapsed since the compressor operation start, the
abnormality stop occurs. (The timer lamp flashes 2 times.)
2) Abnormality of indoor fan motor: The indoor fan motor revolves at a rate under 300 rpm for 30 seconds or
longer, the RUN lamp will flash.
3) Abnormality of heat exchanger thermistor: RUN lamp will flashing when the input temperature of the heat
exchanger thermistor measures less than –20ºC for more than 15
seconds with the airconditioner “OFF”. (will not flashing during
operation)
4) Abnormality room temperature thermistor: RUN lamp will flashing when the input temperature of the room
temperature thermistor measures less than –20ºC for more than
15 seconds with the airconditioner “OFF”. (will not flashing during
operation)
Note (1) If the above abnormalities happen concurrently, the lamp will flashing in the order of item number 1) through 4) above.
(c) 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.
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