Panasonic CS-A181KE User manual

ServiceManual
Room Air Conditioners
Contents
●Features ..........................................................1
●Functions ...................................................2 – 4
●Product Specifications ...............................5 – 8
●Dimensions..............................................9 – 10
●Refrigeration Cycle Diagram .........................10
●Block Diagram ...............................................11
●Wiring Diagram..............................................12
●Operation Details...................................13 – 22
●Installation Information ..........................23 – 24
●3-way Valves .........................................25 – 31
●Servicing Information.............................32 – 35
●Troubleshooting Guide ..........................36 – 37
●Technical Data.......................................38 – 40
●Exploded View.........................................41, 43
●Replacement Parts List ...........................42, 44
●Electronic Parts List...............................45 – 46
CS-A181KE / CU-A181KE
CS-A241KE / CU-A241KE
ORDER NO. MAC9811041C2
 1999 Matsushita Air-Conditioning Corp. Sdn. Bhd.
(183914D)
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
Untitled-5 6/21/00, 10:48 AM1

– 1 –
MAC9512086C2
CS-A181KE
WARNING
Thisserviceinformation isdesigned forexperienced repair techniciansonlyandisnot designedfor useby thegeneralpublic.It doesnotcontain
warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity
should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with
in this service information by anyone else could result in serious injury or death.
• High Efficiency
• High Efficiency Airflow Circuit
• Compact Design
• Removable and Washable
Front Panel
• Auto Restart after Power Failure
• Long Piping up to 25m
• Deodorizing Air Filter
• Deodorizing Control during
operation
Features
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigeration circuit.
!
!
Untitled-8 6/21/00, 9:54 AM1

– 2 –
MAC9512086C2
CS-A181KE
Remote Control
Functions
Operation OFF / ON
OFF / ON IRoom Temperature Setting TEMP.
• Temperature Setting (16˚C to 30˚C)
• Automatic Operation
m /n 2˚C lower than standard
n Standard
n -o 2˚C higher than standard
Operation Mode Selection
•AUTO Automatic Operation Mode
•HEAT Heating Operation Mode
•COOL Cooling Operation Mode
•DRY Soft Dry Operation Mode
MODE
TIME Time / Timer Setting
• Hours and minutes setting.
Clock Setting
• Current time setting.
Sleep Mode Operation OFF / ON
SLEEP
Indoor Fan Speed Selection
FAN SPEED
•h j k Low Speed
l
•h j k Medium Speed
lll
•h j k High Speed
lllll
•AUTOFAN Automatic Fan Speed
•SWING Automatic Airflow Direction
Control
•MANUAL Airflow Direction Manual Control
Airflow Direction Control
• 24-hour, OFF / ON Real Timer Setting.
ON-TIMER
OFF-TIMER Timer Operation Selection
SET
CANCEL Timer Operation Set / Cancel
• ON Timer and OFF Timer setting and
cancellation.
CLOCK
(q)
AIR SWING
Untitled-8 6/21/00, 9:54 AM2

– 3 –
MAC9512086C2
CS-A181KE
Indoor Unit
Functions
Power Switch OFF / ON
POWER IAuto Restart Control
• Operation is restarted after power failure
at previous setting mode.
Anti-Freezing Control
• Anti-Freezing control for indoor heat
exchanger. (Cooling and Soft Dry)
Sleep Mode Auto Control
• Indoor Fan operates at Super Low fan
speed.
• Operation stops after 8 hours.
Indoor Fan Speed Control
• High, Medium and Low.
• Automatic Fan Speed Mode
– Heating : Fan speed varies from Me
SLo in accordance with indoor
heat exchanger.
– Cooling : Fan rotates at Hi and Me
speed. Deodorizing control is
available.
– Soft Dry : Fan rotates at SLo speed.
Deodorizing control is
available.
Hot-Start Control
• Automatic air swing and manual adjusted
by remote control for vertical airflow.
• Manually adjusted by hand for horizontal
airflow.
Airflow Direction Control
• The indoor fan stops until the indoor heat
exchanger temperature over 30°C.
• The indoor fan operates at SLo and Lo–
when indoor heat exchanger temperature
reaches 30°C ~ 42°C.
• Hot start is completed when indoor heat
exchanger reaches 42°C.
Auto Operation Switch
• Used when the remote control cannot be
used.
AUTO
OFF / ON
Remote Control Signal Receiving
Sound Control
• It can be controlled by pressing Auto
Operation Switch for 10 seconds.
Operation Test Running / Pump
Down Switch
TEST RUN
OFF / ON
• Used when test running or servicing.
Operation Indication Lamps (LED)
•POWER (Red)...... Lights up in operation,
blinks in Automatic
Operation Mode judging
and Hot Start operation.
•SLEEP (Orange)..... Lights up in Sleep
Mode Operation.
•TIMER (Orange)..... Lights up in Timer
Setting.
Operation Mode
• Heating, Cooling, Soft Dry, and Automatic
Mode.
Time Delay Safety Control
• Restarting is inhibited for appro. 3 minutes.
7 Minutes Time Save Control
• Cooling Operation only.
➝
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– 4 –
MAC9512086C2
CS-A181KE
Outdoor Unit
Functions
4-Way Valve Control
• When the unit is switched to "OFF" during
Heating operation, 4-way valve stays at
Heating Position for 5 minutes.
60 Secs. Forced Operation Control
• Once the compressor is activated, it does
not stop for 60 secs. (Stops immediately
with remote control stop signal.)
Outdoor Fan Operation Control
• 4-pole induction motor (2-speed)
• For Cooling or Soft Dry Operation
Hi-speed … when outdoor temperature
reaches to 31°C
Lo-speed … when outdoor temperature
reaches to 29°C
• For Heating Operation
Hi-speed ... when outdoor temperature
reaches to 13.5°C.
Lo-speed ... when outdoor temperature
reaches to 15.5°C.
• For Over-heating Protection, the Fan is
switched ON or OFF depending on the
piping temperature and the outdoor tem-
perature.
Overload Protector
• Inner protector (Compressor, Fan Motor).
Deice Control
• To prevent frosting at outdoor heat
exchanger during Heating Operation.
2-Way Valve Control
• 2-way valve is ON for 1 minutes after
compressor start. Other than this, 2-way
valve is OFF. (A241K only)
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– 5 –
MAC9512086C2
CS-A181KE
Unit
kW
Btu/h
kW
Btu/h
s/h
Pint/h
Phase
V
Cycle
OUTLET
INTAKE
m3/min (cfm)
m3/min (cfm)
m3/min (cfm)
m3/min (cfm)
dB (A)
kW
A
W/W
A
inch
inch
inch
inch
mm
m
m
inch (mm)
inch (mm)
inch (mm)
lb (kg)
kW
W
W
rpm
rpm
rpm
Height
Width
Depth
Type
Motor Type
Rated Output
Type
Material
Motor Type
Input
Rated Output
Fan Low
Speed Medium
High
Product Specifications
Input
Running Current
COP
Starting Current
Cooling Capacity
Heating Capacity
Moisture Removal
Power Source
Airflow Method
Air Volume
Noise Level
Electrical
Data
Piping Connection Port
(Flare piping)
Pipe Size
(Flare piping)
Drain
Hose
Power Cord Length
Number of core-wire
Dimensions
Net Weight
Compressor
Air Circulation
Indoor Air (Lo)
Indoor Air (Me)
Indoor Air (Hi)
Outdoor Air
Inner diameter
Length
5.20 - 5.15
17,700 - 17,600
6.20 - 6.05
21,100 - 20,600
2.9
6.1
Single
240 - 220
50
Cooling ; 11.2 (395)
Heating ; 11.6 (409)
Cooling ; 12.4 (437)
Heating ; 12.9 (455)
Cooling ; 13.7 (480)
Heating ; 14.2 (500)
Cooling ; 11.8 (416)
Heating ; 12.2 (430)
Cooling ; High 43 - 43, Low 38 - 38 Cooling ; High 56 - 54
Heating ; High 42 - 42, Low 38 - 38 Heating ; High 57 - 55
Cooling ; 2.12 - 1.98
Heating ; 2.19 - 2.04
Cooling ; 10.9 - 10.0
Heating ; 11.2 - 10.2
Cooling ; 2.45 - 2.60
Heating ; 2.83 - 2.97
51
CS-A181KE
SIDE VIEW
–
G ; Half Union 1/2"
L ; Half Union 1/4"
G (gas side) ; 1/2"
L (liquid side) ; 1/4"
16
0.75
2.1
3 (1.5 mm2)
11-7/16 (290)
38-19/32 (980)
7-11/16 (195)
29 (13)
–
–
–
Cross-flow Fan
AS + Glass Fiber 30%
Transistor (4-poles)
–
20
Cooling ; 980 Heating ; 980
Cooling ; 1,090 Heating ; 1,090
Cooling ; 1,200 Heating ; 1,240
CU-A181KE
TOP VIEW
–
–
–
G ; 3-way valve 1/2"
L ; 3-way valve 1/4"
G (gas side) ; 1/2"
L (liquid side) ; 1/4"
–
–
–
–
26-31/32 (685)
31-1/2 (800)
11-13/16 (300)
137 (62)
Rotary (1 cylinder)
rolling piston type
Induction (2-poles)
1.7
Propeller Fan
PC + AES + Glass Fiber 15%
Induction (4-poles)
136.3
72
670 - 600
–
1,030 - 950
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– 6 –
MAC9512086C2
CS-A181KE
Product Specifications
Length
Flow Rate
Inner Diameter
Material
Style
Heat
Exchanger
Refrigerant Control Device
Refrigeration Oil
Refrigerant (R-22)
Thermostat
Protection Device
Capillary Tube
Air Filter
Compressor Capacitor
Fan Motor Capacitor
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W ×H ×L)
CS-A181KE
Evaporator
Copper
Aluminium
Slot Fin
2 ×14
21
732 ×294 ×25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
–
–
µF, VAC
µF, VAC
• Specifications are subject to change without notice for further improvement.
Unit
mm
(cm3)
g (oz)
mm
s/min
mm
769.2
732.9
CU-A181KE
Condenser
Copper
Aluminium
Corrugated Fin
2 ×26
14
×660.4 ×44
Capillary Tube
SUNISO 4GDID or
ATMOS M60 (700)
1,590 (56.1)
–
Inner Protector
Cooling ; 690 Heating ; 650
Cooling ; 13.0 Heating ; 20.9
Cooling ; 1.6 Heating ; 1.9
–
35 µF, 370VAC
3.0 µF, 400VAC
(Plate fin configuration, forced draft)
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– 7 –
MAC9512086C2
CS-A181KE
Height
Width
Depth
Type
Motor Type
Rated Output
Type
Material
Motor Type
Input
Rated Output
Fan Low
Speed Medium
High
Unit
kW
Btu/h
kW
Btu/h
s/h
Pint/h
Phase
V
Cycle
OUTLET
INTAKE
m3/min (cfm)
m3/min (cfm)
m3/min (cfm)
m3/min (cfm)
dB (A)
kW
A
W/W
A
inch
inch
inch
inch
mm
m
m
inch (mm)
inch (mm)
inch (mm)
lb (kg)
kW
W
W
rpm
rpm
rpm
Cooling Capacity
Heating Capacity
Moisture Removal
Power Source
Airflow Method
Air Volume
Noise Level
Electrical
Data
Piping Connection Port
(Flare piping)
Pipe Size
(Flare piping)
Drain
Hose
Power Cord Length
Number of core-wire
Dimensions
Net Weight
Compressor
Air Circulation
Product Specifications
Input
Running Current
COP
Starting Current
Indoor Air (Lo)
Indoor Air (Me)
Indoor Air (Hi)
Outdoor Air
Inner diameter
Length
6.45 - 6.40
22,000 - 21,800
7.80 - 7.55
26,600 - 25,700
3.8
8.0
Single
240 - 220
50
Cooling ; 13.1 (462)
Heating ; 14.1 (497)
Cooling ; 14.3 (504)
Heating ; 15.4 (542)
Cooling ; 15.7 (550)
Heating ; 16.9 (600)
Cooling ; 14.3 (504)
Heating ; 15.4 (542)
Cooling ; High 47 - 47, Low 41 - 41 Cooling ; High 61 - 59
Heating ; High 46 - 46, Low 41 - 41 Heating ; High 62 - 60
Cooling ; 2.86 - 2.67
Heating ; 2.96 - 2.74
Cooling ; 14.0 - 13.2
Heating ; 14.3 - 13.5
Cooling ; 2.26 - 2.40
Heating ; 2.64 - 2.76
66
CU-A241KE
TOP VIEW
–
–
–
G ; 3-way valve 5/8"
L ; 3-way valve 1/4"
G (gas side) ; 5/8"
L (liquid side) ; 1/4"
–
–
–
–
26-31/32 (685)
31-1/2 (800)
11-13/16 (300)
146 (66)
Rotary (1 cylinder)
rolling piston type
Induction (2-poles)
2.2
Propeller Fan
PC + AES + Glass Fiber 15%
Induction (4-poles)
179.0
108
720 - 635
–
1,200 - 1,140
CS-A241KE
SIDE VIEW
–
G ; Half Union 5/8"
L ; Half Union 1/4"
G (gas side) ; 5/8"
L (liquid side) ; 1/4"
16
0.75
2.1
3 (2.5 mm2)
11-7/16 (290)
38-19/32 (980)
7-11/16 (195)
29 (13)
–
–
–
Cross-flow Fan
AS + Glass Fiber 30%
Transistor (4-poles)
–
40
Cooling ; 1,100 Heating ; 1,200
Cooling ; 1,200 Heating ; 1,320
Cooling ; 1,320 Heating ; 1,410
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– 8 –
MAC9512086C2
CS-A181KE
Product Specifications
Length
Flow Rate
Inner Diameter
Material
Style
Heat
Exchanger
Refrigerant Control Device
Refrigeration Oil
Refrigerant (R-22)
Thermostat
Protection Device
Capillary Tube
Air Filter
Compressor Capacitor
Fan Motor Capacitor
Unit
mm
(cm3)
g (oz)
mm
s/min
mm
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W ×H ×L)
µF, VAC
µF, VAC
• Specifications are subject to change without notice for further improvement.
769.2
732.9
CS-A241KE
Evaporator
Copper
Aluminium
Slot Fin
2 ×14
21
732 ×294 ×25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
–
–
CU-A241KE
Condenser
Copper
Aluminium
Corrugated Fin
2 ×26
16
×660.4 ×44
Capillary Tube
SUNISO 4GDID or
ATMOS M60 (1,130)
1,770 (62.5)
–
Inner Protector
Cooling ; 700 Heating ; 649
Cooling ; 17.5 Heating ; 27.0
Cooling ; 1.8 Heating ; 2.4
–
50 µF, 370VAC
3.0 µF, 450VAC
(Plate fin configuration, forced draft)
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– 9 –
MAC9512086C2
CS-A181KE
Dimensions
CS-A181K / CS-A241K
Relative position between the indoor unit and the installation plate <Front View>
57
142
16
Remote control transmitter
Unit : mm
55
Approx. 706
Gas side Liquid side
Installation plate hooks
Drain ports
980
290
195
59
direction
Air intake
Air outlet direction
Left piping hole
Right piping hole
6
Lower piping hole
52
60
165
2,100
Approx
<Front View>
<Top View>
<Side View>
48.5
(39) 892 (49)
276 7
(59.5)
(165)
100 100
Slot (2 places)
Slot (2 places)
Indoor unit external
dimensions line
Installation plate
Left piping hole
Arrow
Arrow
Centre
Right piping hole
Installation plate positioning gauge
350
7
561
13.5
(Ø 70)
(Ø 70)
(335.5)
piping hole
(Ø 70)
Untitled-8 6/21/00, 9:54 AM9

– 10 –
MAC9512086C2
CS-A181KE
Refrigeration Cycle Diagram
CS/CU-A181K
CS/CU-A241K
Dimensions
CU-A181K / CU-A241K
7577.5
130130 540
663
685
330
370
56.3800
300
35
Air intake direction
Air outlet direction Slots (12 x 17) Four places
3-way valve at
liquid side
3-way valve at
gas side
22 106.5
100cm
10cm
10cm
Required space for installation
Anchor bolt pitch 330 x 540
Unit : mm
COOLING
HEATING
PROCESS
STRAINER
3-WAY VALVE
3-WAY VALVE
INDOOR UNIT OUTDOOR UNIT
HEAT EXCHANGER
(EVAPORATOR)
SENSOR
SENSOR
PIPE
TEMP. CAPILLARY TUBE
CHECK VALVE
COMPRESSOR
OIL
SEPARATOR HEAT EXCHANGER
(CONDENSER)
4-WAY
VALVE
ACCUMULATOR
(SUB) TEMP.
PIPE
SENSOR
ONLY OIL
V
SENSOR
INTAKE
(AIR TEMP.)
INTAKE
AIR TEMP.
2-WAY VALVE
CU-A241K ONLY
TUBE
CAPILLARY TUBE
Untitled-8 6/21/00, 9:54 AM10

– 11 –
MAC9512086C2
CS-A181KE
CS-A181KE / CU-A181KE
CS-A241KE / CU-A241KE
Block Diagram
POWER
SWITCH
INDOOR UNIT OUTDOOR UNIT
SINGLE PHASE 240-220V 50Hz
(113°C)
THERMAL FUSE
22 11
WIRELESS
REMOTE CONTROL TRANSMITTER LH
C
ZNR
RY-PWR
RY-HOT
ELECTRONIC CONTROLLER
4 4
33
TRANSFORMER2
FUSE 3.15A
FUSE 3.15A
ZNR2
RY-HOT
ZNR1 COMP
F/M
RY-V RY-OFF
RY-DEICE
2-WAY
TRANSFORMER1
RY-H/L
TRANS- FORMER
4-WAY VALVE
VALVE
CU-A241K ONLY
O.L.P.
P.C.B.
RECEIVER
SENSOR
6C
S/M
INDICATORS
5C 4C
SENSOR
4C
ZNR3 ZNR4
3.15A FUSE
3C
F/M
ELECTRONIC CONTROLLER
THERMAL
FUSE (102°C)
Indicates the number of core wires. (Example: 6C=6 core wires)
"C"
Indicates the electronic control unit.
MAIN
PC1
ZNR2
STEPPING
MOTOR
FAN MOTOR
INDOOR
Untitled-8 6/21/00, 9:54 AM11

– 12 –
MAC9512086C2
CS-A181KE
FAN MOTOR
CAPACITOR
654
(PIPE TEMP.)
SENSOR SENSOR
(AIR TEMP.)
PNK
YLW
ORG
RED
BRW
CN-STMCN-TH (YLM)
1324
MOTOR
THERMAL FUSE (102°C)
YLW/GRN
21
AC(WHT)
FUSE (3.15A)
L
P
CN-MTR (GRN)
YLW
RED
BLU
MOTOR
FAN
1
AUTO SW
DOWN SW
PUMP
POWER SUPPLY CORD
CONTROLLER
ELECTRONIC
BA
CN-DISP (WHT)
WHT
WHT
RECEIVER+
CONTROLLER
ELECTRONIC
DISPLAY LAMP
CONTROL
REMOTE
WIRELESS
BLU
MAIN SW
1
2
3
4
YLW/GRN
240/220V, 50Hz
RED
RED
RED
RED
BRW
BLK
WHT
CONTROL No
TRANSFORMER
BLK BLK
T (BLK)
ZNR
CN-T(WHT)
DEICE (BLU)
RY-HOT
3
312
4
4
CAPACITOR
(4-WAY VALVE)
COIL
TRANSFORMER1
ZNR2
COMP(VLT) AC(WHT)
TRANSFORMER2
RY-HOT
RY-V
FUSE (3.15A)
RY-DEICE
RY-OFF
1
SENSOR (AIR TEMP.)
(PIPE TEMP.) SENSOR
CN-TH(WHT)
BLU BLU
RED
BRW
RY-H/L
ORG
BLU
RED
YLW
WHT
YLW
WHT
VLT
BLU
BLK
TERMINAL
OUTDOOR UNIT
BRW
BLU
RED
INDOOR UNIT TERMINAL
RED
GRY
HOT2(BLK)HOT1(RED) DEICE (GRY)
ELECTRONIC
COMPRESSOR
V(BLU)
(2-WAY VALVE)
COIL
BLU
BLK
WHT
HOT(RED)
BLUE
YELL
O
TRADE
M
COMPRESSO
R
321
WHT
WHT
WHT
CN-DISP (WHT)
()
3
1
(113°C)
THERMAL FUSE
CN-FUSE1(BLU)
(TEMP.)
O.L.P.
ZNR4
T 3.15A L 250V
FUSE
ZNR
WHT
(YL
W
(BLU)
ZNR3
FM2(ORG) FM1(BRW)
CONTROLLER
2
4
3
3
2
1
2
1
2
3
4
6
5
T (BLK)
AC (BRW)
COMP(BLK)
CN-FUSE2
REMOTE
(SW1)
5
4
3
2
1
BLU
(A241K ONLY)
CORE (A241K ONLY)
Wiring Diagram
CS-A181KE / CU-A181KE
CS-A241KE / CU-A241KE
CU-A181KE
CWA92294 (Ω)
79.5
65.1
70.8
CU-A241KE
CWA92295 (Ω)
46.8
64.6
73.7
CONNECTION
BLUE - BROWN
BROWN - ORANGE
RED - BROWN
Resistance of Outdoor Fan Motor Windings
CONNECTION
C-R
C-S
CU-A181KE
2JS350D3AA02 ( Ω )
0.980
3.929
CU-A241KE
2JS464D3AA02 ( Ω )
0.888
2.328
Resistance of Compressor Windings
REMARKS:
BLU : BLUE
BRW : BROWN
BLK : BLACK
WHT : WHITE
RED : RED
ORG : ORANGE
PNK : PINK
YLW : YELLOW
GRN : GREEN
GRY : GRAY
VLT : VIOLET
REDBLUE
YELLOW
TRADE MARK
COMPRESSOR TERMINAL
(YLW)
(BLU) (RED)
Untitled-9 6/21/00, 10:18 AM12

– 13 –
MAC9512086C2
CS-A181KE
Operation Details
1) Cooling Mode Operation
Cooling in operation according to Remote Control setting.
• When the compressor is stopped by Power Switch, Remote Control or there is a power failure, it restarts after 3
minutes when the Power Switch, Remote Control is turned ON or the power supply is resumed.
• When the setting temperature is reached during cooling operation, the compressor stops and it will not start for 3
minutes.
• The compressor will start automatically if it has stopped for 7 minutes even if the room temperature is below the
compressor ON temperature.
Time Delay Safety Control (3 minutes)
7 minutes Time Saved Control
Anti-Freezing Control
• If the temperature of the indoor heat exchanger
falls continously below 2°C for 4 minutes, the
compressor turns off to protect the indoor heat
exchanger from freezing. The fan speed setting
remains the same.
• Compressor recommences when the indoor heat
exchanger temperature rises to 10°C (Recovery).
*3 minutes waiting of Time Delay Safety Control
is valid for Cooling Operation.
Recovery
4 min
Compressor OFF
Indoor Heat
Exchanger
Temperature
(°C)
2
10
Untitled-9 6/21/00, 10:18 AM13

– 14 –
MAC9512086C2
CS-A181KE
Automatic Fan Speed Mode
When Automatic Fan Speed is selected at Remote Control during cooling operation.
• Fan speed rotates in the range of Hi to Me.
• Deodorizing Control.
Operation Details
Cooling Operation Time Diagram
*1 Fan Speed is Hi until the compressor stops (when the room temperature reaches
setting temperature).
*2 Fan Speed is Me after the compressor restarts.
<Description of operation>
d – g : Time Delay Safety Control (waiting for 3 minutes)
g – h : 60 sec. Forced Operation
h – o : 7 min. Time Saved Control
q – t : Anti Freezing Control
v – y : Outdoor Fan Control
Indoor
Fan
Comp.
SLo SLo SLo SLo
ON ONOFF
stop stop stop
30"
stop
30"160"
1
40" 40"
20"

✕
..
.
.2
✕
..
.
.
abcdefghijklmnopqrstuvwxyz
Basic Time
Compressor
Indoor Fan
Outdoor Fan
Operation LED
4 Way Valve
2 Way Valve (A241K)
1’ 3’ 1’ 7’ 1’ 4’
1.5˚C
ON
OFF
Comp.
Intake Air
Temperature
Comp.
Set Temp.
Indoor
Heat
Exchanger
Temp.
10°C
2°C
HiHi Hi Lo Lo Lo Hi
Outdoor Air
Temperature
31˚C
29˚C
Operation
Stop
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– 15 –
MAC9512086C2
CS-A181KE
Operation Details
2) Soft Dry Mode Operation
• The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote
Control, and then Soft Dry operation will start.
• During Soft Dry operation, the Indoor Fan operates with SLo speed.
• Once room temperature reaches below Soft Dry OFF temperature. Indoor Fan, Compressor and Outdoor Fan
Stop for 6 minutes.
• Once the compressor stops, it will not start for 3 minutes during Cooling operation.
• Same as Anti-Freezing Control for Cooling Mode operation. (For Soft Dry region, 6 minutes waiting is valid during
compressor stops.)
When Automatic Fan Speed is selected at Remote Control during Soft Dry Operation.
• Fan speed rotates at SLo speed.
• Deodorizing Control.
Time Delay Safety Control
Anti-Freezing Control
Indoor
Fan
COMP
stop stop stop
SLo SLo SLo
ON ON
OFF
40" 40"6'
Automatic Fan Speed Mode
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– 16 –
MAC9512086C2
CS-A181KE
Operation Details
Soft Dry Operation Time Diagram
<Description of operation>
a – c, p~r : Cooling Operation
c – p, r~v : Soft Dry Operation
e – f : Soft Dry OFF
j – l : 60 sec. Forced Operation
q – t : Anti Freezing Control
Operation
Stop
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Basic Time
Compressor
Indoor Fan
Outdoor Fan
Operation LED
4 Way Valve
2 Way Valve (A241K)
1’1’ 1’
1’6’ 6’ 6’ 6’
4’ 1’
Cooling ON
Cooling OFF
Soft Dry OFF, ON
1.5°C
1.0°C
SLoSLo SLo SLoSLo SLo SLo SLoSLo SLo SLo SLo
6’
Intake Air
Temperature
Set Temp.
Indoor
Heat
Exchanger
Temp.
10°C
2°C
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– 17 –
MAC9512086C2
CS-A181KE
Operation Details
3) Heating Mode Operation
• Heating in operation according to Remote Control setting.
Time Delay Safety Control
• When the compressor is stopped by Power Switch, Remote Control or there is a power failure, it restarts after 3
minutes when the Power Switch, Remote Control is turned ON or the power supply is resumed.
• When the setting temperature is reached during heating operation, the compressor stops and it will not start for 4
minutes.
Overload Protection Control
• If the temperature of the Outdoor Heat Exchanger less than -3°C, Outdoor Fan is ON. The Outdoor Fan stop, when
Outdoor Heat Exchanger temperature is Tbor more according to Outdoor Air Temperature region as table below:
Outdoor Air
Temperature
Tb
<10°C
Ä 5°C
Ä10°C ~ <15°C
Ä4°C
Ä15°C ~ <20°C
Ä3°C
Ä20°C ~ <25°C
Ä2°C
Ä25°C
Ä1°C
Outdoor
Fan
OFF
During starting of Heating mode and after deice, Outdoor Fan ON for 90 sec (Hi).
• If the indoor heat exchanger becomes 68°C or more, the compressor will stop and restart automatically.
(Time Delay Safety Control - 4 minutes waiting)
4-way Valve Control
• 4-way valve ON during Heating operation, except deicing operation.
• When the unit is switched to "OFF" during Heating operation, 4-way valve stays at Heating position for 5 minutes.
Hot Start Control
When Heating operation starts, Indoor Fan will not start until the indoor heat exchanger reaches 30°C as diagram
shown.
Hot Start is completed when indoor heat exchanger reaches 42°C.
Maximum Hot start duration = 4 minutes. After 4 minutes,
Hot start operation will be shifted to normal Heating operation.
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Indoor
heat
exchanger 34
30
SLo
Indoor Fan
OFF
Lo–
(°C)
Indoor heat exchanger
temperature Ä 68°C Compressor
OFF Compressor restarts
(4 minutes waiting)
➡➡
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– 18 –
MAC9512086C2
CS-A181KE
42°C
34°C
32°C
30°C
OFF
ON
1'
1' 30" 30" 30"120"
30" 120"
Basic time
Indoor
Heat
Exchanger
Temp.
Intake
Temp.
SLo SLo SLoLo-Lo-Lo-Lo- Lo-Lo-Lo- SLo
Compressor
4-way valve
Indoor Fan
Outdoor Fan
Operation LED
2 Way Valve (A241K)
Max 4'
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3'
Operation Details
When Automatic Fan Speed is selected at Remote Control during heating operation.
• Fan speed rotates in the range of Me SLo according to the heat exchanger temperature.
➝
Automatic Fan Speed Mode
Heating Operation Time Diagram
<Description of operation>
a – c : Hot start (Indoor fan = OFF)
c – d : Hot start (Indoor fan = SLo)
h – k, o – s : Indoor fan control (controlled during thermostat OFF)
: Blinking
Operation
Stop
Operation or Stop
SLo
Lo-
45
42
34
30
36
(
°
C)
(
°
C)
Heat
Exchanger
Temperature OFF
28
25
15
Lo
Me
Manual Fan Speed Mode
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– 19 –
MAC9512086C2
CS-A181KE
Operation Details
Deicing Control
Deice starts to prevent frosting at outdoor heat exchanger.
• Normal Deicing
Deice operation detection commences in Heating operation starts or 60 minutes after previous deice operation. If
the outdoor piping temperature drops to –4°C or 50 sec. continuosly during compressor is in operation, deice will
start.
(There is no detection during Outdoor Fan stops.)
• Overload Deicing
Duringheatingoperation,iftheoutdoorFanOFFduration(dueto overloadcontrol)isaccumulatedupto60minutes
and after compressor starts for 1 minutes, deicing starts.
• Deicing ends when
(a) 12 minutes after deicing operation starts;
(b) The outdoor piping temperature rises to about 12°C.
• Afterdeicingoperation,compressorstops for 30 seconds and 4-way valve stays at cooling position for 10 seconds.
a) Normal Deicing Time Diagram
<Description of operation>
a – c : Deicing operation judging condition established.
c – f : Deicing operation.
f – g : Hot start (add 4 minute delay timing)
: Blinking
Operation
Stop
Operation or Stop
a b c d e f g h i j k l m n o p q
42°C
34°C
30°C
12°C
-4°C
Basic Time
Compressor
4-way Valve
Indoor Fan
Outdoor Fan
Operation LED
Indoor
Heat
Exchanger
Temp.
Outdoor
Heat
Exchanger
Temp.
SLo Lo-SLo Lo-
60'
max
12' max 4' max 4'
10" 20"
10" 20" 60'60'
max
12'
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