Panasonic CS-A181KR 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-A181KR / CU-A181KR
CS-A241KR / CU-A241KR
ORDER NO. MAC9903022C3
 1999 Matsushita Air-Conditioning Corp. Sdn. Bhd.
(183914D)
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
Untitled-5 6/10/00, 3:21 PM1

– 1 –
MAC9512086C2
CS-A181KR
WARNING
Thisserviceinformationisdesigned forexperienced repair techniciansonlyandisnotdesignedfor 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
• Cold draught Control
Features
!
Untitled-1 6/10/00, 9:27 AM1

– 2 –
MAC9512086C2
CS-A181KR
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-1 6/10/00, 9:27 AM2

– 3 –
MAC9512086C2
CS-A181KR
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.
➝
Untitled-1 6/10/00, 9:27 AM3

– 4 –
MAC9512086C2
CS-A181KR
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)
Untitled-1 6/10/00, 9:27 AM4

– 5 –
MAC9512086C2
CS-A181KR
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
CU-A181KR
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)
139
72
670 - 635
–
1,030 - 990
CS-A181KR
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)
61.9
20
Cooling ; 980 Heating ; 980
Cooling ; 1,090 Heating ; 1,090
Cooling ; 1,200 Heating ; 1,240
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
5.20 - 5.15
17,700 - 17,600
6.20 - 6.15
21,100 - 21,000
2.9
6.1
Single
240 - 230
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 - 56
Heating ; High 42 - 42, Low 38 - 38 Heating ; High 57 - 57
Cooling ; 2.19 - 2.10
Heating ; 2.28 - 2.17
Cooling ; 11.4 - 11.1
Heating ; 11.3 - 10.8
Cooling ; 2.37 - 2.45
Heating ; 2.72 - 2.83
51
Untitled-1 6/10/00, 9:27 AM5

– 6 –
MAC9512086C2
CS-A181KR
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-A181KR
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-A181KR
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)
Untitled-1 6/10/00, 9:27 AM6

– 7 –
MAC9512086C2
CS-A181KR
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
CS-A241KR
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)
72.2
30
Cooling ; 1,100 Heating ; 1,200
Cooling ; 1,200 Heating ; 1,320
Cooling ; 1,320 Heating ; 1,410
CU-A241KR
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)
191.0
108
720 - 680
–
1,200 - 1,170
6.45 - 6.40
22,000 - 21,800
7.80 - 7.65
26,600 - 26,100
3.8
8.0
Single
240 - 230
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 - 61
Heating ; High 46 - 46, Low 41 - 41 Heating ; High 62 - 62
Cooling ; 3.08 - 2.95
Heating ; 3.16 - 3.05
Cooling ; 15.7 - 15.6
Heating ; 14.7 - 14.2
Cooling ; 2.09 - 2.17
Heating ; 2.47 - 2.51
66
Untitled-1 6/10/00, 9:27 AM7

– 8 –
MAC9512086C2
CS-A181KR
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-A241KR
Evaporator
Copper
Aluminium
Slot Fin
2 ×14
21
732 ×294 ×25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
–
–
CU-A241KR
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)
Untitled-1 6/10/00, 9:27 AM8

– 9 –
MAC9512086C2
CS-A181KR
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-1 6/10/00, 9:27 AM9