Panasonic CS-MA90KE User manual

ServiceManual
Multi-Split Air Conditioners
Contents
●Features ..........................................................1
●Functions ...................................................2 – 4
●Product Specifications .............................5 – 10
●Dimensions............................................11 – 12
●Refrigeration Cycle Diagram .........................13
●Block Diagram ...............................................14
●Wiring Diagram......................................15 – 16
●Operation Details...................................17 – 27
●Installation Information ..........................28 – 29
●2-way, 3-way Valves..............................30 – 36
●Servicing Information.............................37 – 40
●Troubleshooting Guide ..........................41 – 42
●Technical Data.......................................43 – 46
●Exploded View.............................47, 49, 51, 53
●Replacement Parts List ...............48, 50, 52, 54
●Electronic Parts List.......................................55
ORDER NO. MAC9611042C2
CS-MA90KE / CU-MA180KE
CS-MA120KE / CU-MA240KE
CS-MA70KE / CU-MA190KE
CS-MA120KE
 1996 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T)
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
Untitled-1 6/30/00, 7:44 AM1

– 1 –
CS-A90KECS-MA90KE
MAC9509078C2
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigeration circuit.
• High Efficiency
• Compact Design
• Comfort Improvement
– Wider range of horizontal discharge air
– Longer hours of sleep mode operation
• Auto Restart
– Auto restart operation after power failure
• Removable and Washable
Front Panel
• Installation Work Improvement
– Long piping up to 15 m
• Quality Improvement
– Low voltage protection
– Gas leakage protection
– Prevent compressor reverse cycle
– 2-stage OLP to protect compressor
(CS-MA90KE / CS-MA120KE)
• Service Improvement
– Easy fan motor replacement procedure
Features
!
WARNING
Thisserviceinformationisdesignedfor experienced repairtechnicians onlyand isnot designedfor useby thegeneral public.Itdoesnotcontain
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.
!
Untitled-4 6/30/00, 7:51 AM1

– 2 –
MAC9509078C2
CS-MA90KE
Remote Control
Functions
Operation OFF / ON
OFF / ON LRoom 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)
SWING /
MANUAL
Untitled-4 6/30/00, 7:51 AM2

– 3 –
CS-A90KECS-MA90KE
MAC9509078C2
Indoor Unit
Functions
Power Switch OFF / ON
POWER L
Auto Operation Switch
• Used when the remote control cannot be
used.
Remote Control Signal Receiving
Sound Control
• It can be controlled by pressing Auto
Operation Switch for 10 seconds.
AUTO
OFF / ON
Operation Test Running / Pump
Down Switch
TEST RUN
OFF / ON
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
• Used when test running or servicing.
Operation Mode
• Heating, Cooling, Soft Dry and Automatic
Mode.
Time Delay Safety Control
• Restarting is inhibited for appro. 3 or 4
minutes.
7 Minutes Time Save Control
• Cooling Operation only.
Auto 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
• The operation starts at SLo speed and
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.
Airflow Direction Control
• Automatic air swing and manual adjusted
by remote control for vertical airflow.
• Manually adjusted by hand for horizontal
airflow.
Hot-Start 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 ~ 41°C.
• Hot Start is completed when indoor heat
exchanger reaches 41°C.
Untitled-4 6/30/00, 7:51 AM3

– 4 –
MAC9509078C2
CS-MA90KE
Compressor Reverse Rotation
Protection Control
Outdoor Unit
Functions
• To protect compressor from reverse
rotation when there is a instantaneous
power failure.
Overload Protector
• CS-MA90KE and CS-MA120KE
2-stage OLP to protect the compressor.
Overload Protector will trip when
– Temperature of compressor increases to
120°C.
– High temperature or high current flow to
compressor.
(Refer circuit diagram for OLP characteristic)
• CS-MA70KE
OLP to protect the compressor.
– OLP characteristic can be referred to
circuit diagram.
Overload Protection Control
• Outdoor fan stops when indoor heat
exchanger temperature rises to 51°C and
restarts when the indoor heat exchanger
temperature drops to 49°C.
• Compressor stops when indoor heat
exchanger temperature reaches 65°C or
above.
(Heating Operation only)
Compressor Protection Control
• If the outdoor fan motor is not running after
compressor starts for 50 secs., compressor
will stop. (Cooling and Soft Dry Operation
only).
• When the unit is switched to “OFF” during
Heating Operation, 4-way valve stays at
Heating position for 5 minutes.
• Inner protector.
4-Way Valve Control
Outdoor Fan Operation Control
60 Secs. Forced Operation Control
• Once the compressor is activated, it does
not stop for 60 secs. (Stops immediate
with remote control stop signal.)
Deice Control
• To prevent frosting at outdoor heat
exchanger. (Only for Heating Operation)
• Outdoor indoor heat exchanger is sensed
by TRS (Thermal Reed Switch).
Untitled-4 6/30/00, 7:51 AM4

– 5 –
CS-A90KECS-MA90KE
MAC9509078C2
2.05 - 2.00, 3.50 - 3.45
7,000 - 6,800, 11,900 - 11,800
2.15 - 2.10, 4.10 - 4.00
7,300 - 7,200, 14,000 - 13,600
1.3, 2.0
2.7, 4.2
Single
240 - 220
50
Cooling ; 660 - 600, 1,250 - 1,220
Heating ; 640 - 600, 1,280 - 1,230
Cooling ; 3.2 - 3.0, 5.6 - 5.7
Heating ; 3.1 - 3.0, 5.7 - 5.7
Cooling ; 3.1 - 3.3, 2.8 - 2.8
Heating ; 3.4 - 3.5, 3.2 - 3.3
13, 25
CS-MA70KE, CS-MA120KE
SIDE VIEW
Cooling ; 5.5 (190), 7.5 (260)
Heating ; 5.5 (190), 7.8 (280)
Cooling ; 6.0 (210), 8.4 (300)
Heating ; 6.0 (210), 8.7 (310)
Cooling ; 6.7 (240), 9.3 (330)
Heating ; 6.7 (240), 9.7 (340)
–
Cooling ; High 36-35, 42-41,
Low 30-29, 38-37
Heating ; High 36-35, 43-42,
Low 30-29, 38-37
G ; Half Union 3/8", 1/2"
L ; Half Union 1/4", 1/4"
G (gas side) ; 3/8", 1/2"
L (liquid side) ; 1/4", 1/4"
12
0.7
2.1
3 (1.0 mm2)
11-7/16 (290)
31-15/32 (799)
6-29/32 (175)
18 (8.0)
–
–
–
Cross-flow Fan
AS + Glass Fiber 30%
Transistor (4-poles)
–
20
950, 1,210
1,030, 1,350
1,150, 1,500
CU-MA190KE
TOP VIEW
–
–
–
22.4 (790), 22.0 (780)
Cooling ; High 47-45, 49-48 (51-50)
Heating ; High 49-47, 49-48 (52-51)
G ; 3-way valve 3/8", 1/2"
L ; 2-way valve 1/4", 1/4"
G (gas side) ; 3/8", 1/2"
L (liquid side) ; 1/4", 1/4"
–
–
–
–
39- 31/32(1015)
30-23/32 (780)
9-21/32 (245)
159 (72)
Rotary (1 cylinder)
rolling piston type
Induction (2-poles)
550, 1,100
Propeller Fan
AES + Glass Fiber 12%
Induction (6-poles)
58.6 × 2
20 × 2
–
–
730
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
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)
W
A
W/W
A
inch
inch
inch
inch
mm
m
m
inch (mm)
inch (mm)
inch (mm)
lb (kg)
W
W
W
rpm
rpm
rpm
Untitled-4 6/30/00, 7:51 AM5

– 6 –
MAC9509078C2
CS-MA90KE
(Plate fin configuration, forced draft)
Capillary Tube
CU-MA190KE
Condenser
Copper
Aluminium
Corrugated Fin
1 ×18 2 ×19
19 16
856 ×457.2 ×22 706.2 ×482.6 ×44
669.9
Capillary Tube
SUNISO 4GDID or
ATMOS M60 (290, 430)
860, 1,100 (30.4, 38.8)
–
Overload Protector
Cooling ; 920, 720, Heating ; 590, 550
Cooling ; 4.0, 7.5, Heating ; 8.2, 12.5
Cooling ; 1.1, 1.3, Heating ; 1.3, 1.5
–
15 µF, 440VAC 30 µF, 370VAC
1.2 µF, 400VAC 1.2 µF, 400VAC
Product Specifications
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W ×H ×L)
Heat
Exchanger
Refrigerant Control Device
Refrigeration Oil
Refrigerant (R-22)
Thermostat
Protection Device
Capillary Tube
Air Filter
Capacity Control
Compressor Capacitor
Fan Motor Capacitor
Unit
mm
(c.c)
g (oz)
mm
s/min
mm
µF, VAC
µF, VAC
Length
Flow Rate
Inner Diameter
Material
Style
• Specifications are subject to change without notice for further improvement.
CS-MA70KE, CS-MA120KE
Evaporator
Copper
Aluminium
Slot Fin
2 ×12 2 ×12
18 21
600 ×252 ×25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
–
–
Untitled-4 6/30/00, 7:51 AM6

– 7 –
CS-A90KECS-MA90KE
MAC9509078C2
Product Specifications
Inner diameter
Length
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
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)
W
A
W/W
A
inch
inch
inch
inch
mm
m
m
inch (mm)
inch (mm)
inch (mm)
lb (kg)
W
W
W
rpm
rpm
rpm
Indoor Air (Lo)
Indoor Air (Me)
Indoor Air (Hi)
Outdoor Air
CS-MA90KE
SIDE VIEW
Cooling ; 6.3 (220)
Heating ; 6.4 (230)
Cooling ; 7.4 (260)
Heating ; 7.5 (260)
Cooling ; 8.4 (300)
Heating ; 8.6 (300)
–
Cooling ; High 38-38, Low 30-30
Heating ; High 39-39, Low 30-30
G ; Half Union 3/8"
L ; Half Union 1/4"
G (gas side) ; 3/8"
L (liquid side) ; 1/4"
12
0.7
2.1
3 (1.0mm2)
11-7/16 (290)
31-15/32 (799)
6-29/32 (175)
18 (8.0)
–
–
–
Cross-flow Fan
AS + Glass Fiber 30%
Transistor (4-poles)
–
20
980
1,150
1,310
2.65 ×2 - 2.60 ×2
9,000 ×2 - 8,900 ×2
3.15 ×2 - 3.00 ×2
10,700 ×2 - 10,200 ×2
1.6 ×2
3.4 ×2
Single
240 - 220
50
Cooling ; 940 ×2 - 890 ×2
Heating ; 950 ×2 - 880 ×2
Cooling ; 4.1 ×2 - 4.1 ×2
Heating ; 4.2 ×2 - 4.1 ×2
Cooling ; 2.8 - 2.9
Heating ; 3.3 - 3.4
20 ×2
CU-MA180KE
TOP VIEW
–
–
–
22.4 (790)
Cooling ; High 49-48 (52-51)
Heating ; High 49-47 (52-50)
G ; 3-way valve 3/8"
L ; 2-way valve 1/4"
G (gas side) ; 3/8"
L (liquid side) ; 1/4"
–
–
–
–
38-3/4 (985)
30-23/32 (780)
9-21/32 (245)
152 (69)
Rotary (1 cylinder)
rolling piston type
Induction (2-poles)
750 ×2
Propeller Fan
AES + Glass Fiber 12%
Induction (6-poles)
58.6 ×2
20 ×2
–
–
730
Untitled-4 6/30/00, 7:51 AM7

– 8 –
MAC9509078C2
CS-MA90KE
Heat
Exchanger
Refrigerant Control Device
Refrigeration Oil
Refrigeration (R-22)
Thermostat
Protection Device
Capillary Tube
Air Filter
Capacity Control
Compressor Capacitor
Fan Motor Capacitor
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W ×H ×L)
µF, VAC
µF, VAC
Length
Flow Rate
Inner Diameter
Material
Style
Unit
mm
(c.c)
g (oz)
mm
s/min
mm
Product Specifications
CS-MA90KE
Evaporator
Copper
Aluminium
Slot Fin
2 ×12
18
600 ×252 ×25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
–
–
(Plate fin configuration, forced draft)
Capillary Tube
• Specifications are subject to change without notice for further improvement.
CU-MA180KE
Condenser
Copper
Aluminium
Corrugated Fin
1 ×18
19
856 ×457.2 ×22
Capillary Tube
SUNISO 4GDID or
ATMOS M60 (350 ×2)
850 ×2 (30.0 ×2)
–
Overload Protector
Cooling ; 1,033, Heating ; 585
Cooling ; 4.8, Heating ; 9.9
Cooling ; 1.2, Heating ; 1.4
–
–
25 µF, 370VAC
(Upper unit) 1.0 µF, 400VAC
(Lower unit) 1.2 µF, 400VAC
Untitled-4 6/30/00, 7:51 AM8

– 9 –
CS-A90KECS-MA90KE
MAC9509078C2
Product Specifications
Inner diameter
Length
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
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)
W
W
W
rpm
rpm
rpm
Indoor Air (Lo)
Indoor Air (Me)
Indoor Air (Hi)
Outdoor Air
CS-MA120KE
SIDE VIEW
Cooling ; 7.5 (260)
Heating ; 7.8 (280)
Cooling ; 8.4 (300)
Heating ; 8.7 (310)
Cooling ; 9.3 (330)
Heating ; 9.7 (340)
–
Cooling ; High 42-41, Low 38-37
Heating ; High 43-42, Low 38-37
G ; Half Union 1/2"
L ; Half Union 1/4"
G (gas side) ; 1/2"
L (liquid side) ; 1/4"
12
0.7
2.1
3 (1.0mm2)
11-7/16 (290)
31-15/32 (799)
6-29/32 (175)
18 (8.0)
–
–
–
Cross-flow Fan
AS + Glass Fiber 30%
Induction (4-poles)
–
20
1,210
1,350
1,500
3.50 ×2 - 3.45 ×2
11,900 ×2 - 11,800 ×2
4.10 ×2 - 4.00 ×2
14,000 ×2 - 13,600 ×2
2.0 ×2
4.2 ×2
Single
240 - 220
50
Cooling ; 1.25 ×2 - 1.22 ×2
Heating ; 1.28 ×2 - 1.23 ×2
Cooling ; 5.6 ×2 - 5.7 ×2
Heating ; 5.7 ×2 - 5.7 ×2
Cooling ; 2.8 - 2.8
Heating ; 3.2 - 3.3
25 ×2
CU-MA240KE
TOP VIEW
–
–
–
22.0 (780)
Cooling ; High 49-48 (52-51)
Heating ; High 49-48(52-51)
G ; 3-way valve 1/2"
L ; 2-way valve 1/4"
G (gas side) ; 1/2"
L (liquid side) ; 1/4"
–
–
–
–
41-5/32 (1045)
30-23/32 (780)
9-21/32 (245)
183 (83)
Rotary (1 cylinder)
rolling piston type
Induction (2-poles)
1,100 ×2
Propeller Fan
AES + Glass Fiber 12%
Induction (6-poles)
58.6 ×2
20 ×2
–
–
730
Untitled-4 6/30/00, 7:51 AM9

– 10 –
MAC9509078C2
CS-MA90KE
Product Specifications
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W ×H ×L)
CS-MA120KE
Evaporator
Copper
Aluminium
Slot Fin
2 ×12
21
600 ×252 ×25.4
–
–
–
Electronic Control
–
–
–
–
P.P.
Honeycomb
–
–
Length
Flow Rate
Inner Diameter
Material
Style
• Specifications are subject to change without notice for further improvement.
Heat
Exchanger
Refrigerant Control Device
Refrigeration Oil
Refrigeration (R-22)
Thermostat
Protection Device
Capillary Tube
Air Filter
Capacity Control
Compressor Capacitor
Fan Motor Capacitor
Unit
mm
(c.c)
g (oz)
mm
s/min
mm
µF, VAC
µF, VAC
(Plate fin configuration, forced draft)
Capillary Tube
CU-MA240KE
Condenser
Copper
Aluminium
Corrugated Fin
2 ×19
16
706.2 ×482.6 ×44
669.9
Capillary Tube
SUNISO 4GDID or
ATMOS M60 (430 ×2)
1,100 ×2 (38.8 ×2)
–
Overload Protector
Cooling ; 720, Heating ; 550
Cooling ; 7.5, Heating ; 12.5
Cooling ; 1.3, Heating ; 1.5
–
–
30 µF, 370VAC
(Upper unit) 1.0 µF, 400VAC
(Lower unit) 1.2 µF, 400VAC
Untitled-4 6/30/00, 7:51 AM10

– 11 –
CS-A90KECS-MA90KE
MAC9509078C2
Dimensions
CS-MA70KE / CS-MA90KE / CS-MA120KE
Relative position between the indoor unit and the installation plate <Front View>
790
48.5
60
290
<Front View>
175
61
34.5
52
direction
Air intake
Air outlet
direction
Left piping hole Right piping hole
290
115
55 60
2100
57
142
16
Remote control transmitter
(45)(410)
<Back View> Installation plate hooks
Drain ports Gas
side Liquid
side
(40) 710 (40)
276 7
(60) (110)
100 100
Slot (2 places)
Slot (2 places)
Centre notch
Indoor unit external
dimensions line
Installation plate
Left piping hole
Arrow
Arrow Centre Right piping hole
Installation plate positioning gauge
350
7
457
13.5
Untitled-4 6/30/00, 7:51 AM11

– 12 –
MAC9509078C2
CS-MA90KE
A
CU-MA180K
985
CU-MA240K
1045
CU-MA190K
1015
CU-MA180KE, CU-MA190KE, CU-MA240KE
67104
105105 570 280
312
67
A
780 57 245
Gas side
3-way valve
Liquid side
2-way valve
Unit A
Unit B
2-way valve
Liquid side
3-way valve
Gas side
Dimensions
A
Untitled-4 6/30/00, 7:51 AM12

– 13 –
CS-A90KECS-MA90KE
MAC9509078C2
Refrigeration Cycle Diagram
CS-MA90KE / CU-MA180KE
CS-MA120KE / CU-MA240KE
CS-MA70KE / CU-MA190KE
CS-MA120KE
COMP.
4-WAY VALVE
C1
C3 C2
CHECK VALVE
PIPE
TEMP.
SENSOR
(T.R.S)
SENSOR
TEMP.
INTAKE
PIPE
TEMP.
SENSOR
INDOOR OUTDOOR
COOLING
HEATING
HEAT EXCHANGER
(EVAPORATOR) HEAT EXCHANGER
(CONDENSER)
2-WAY
VALVE
VALVE
3-WAY
3-WAY
VALVE
VALVE
2-WAY
(CONDENSER)
HEAT EXCHANGER
(EVAPORATOR)
HEAT EXCHANGER
SENSOR
TEMP.
PIPE
INTAKE
TEMP.
SENSOR (T.R.S)
SENSOR
TEMP.
PIPE
CHECK VALVE
C2
C3
C1
4-WAY VALVE
COMP.
C1, C2, C3; CAPILARRY TUBE
Untitled-4 6/30/00, 7:51 AM13

– 14 –
MAC9509078C2
CS-MA90KE
Block Diagram
"C"
Indicates the electronic control unit.
Indicates the number of core wires. (Example:5C=5 core wires).
CS-MA90KE / CU-MA180KE CS-MA120KE / CU-MA240KE CS-MA70KE / CU-MA190KE CS-MA120KE
FUSE
ZNR1
ZNR2
3 4 1
TRANSFORMER
FM
CT1
STEPPING
3C
4C
5C
RECEIVER P.C.B. INDICATOR P.C.B.
WIRELESS REMOTE CONTROL TRANSMITTER
2
2
1 4 3
FM
RELAY
B
RELAY A
COMP
COMP
O.L.P.
O.L.P.
FOR CU-A120K/A90K FOR
CU-A70K
MAIN
POWER SWITCH
SSR1
RY-HOT
SINGLE
50Hz
AC 220-240V
PHASE
INDOOR UNIT OUTDOOR UNIT
P.C.B.
MOTOR
TRS
4-WAY
VALVE
(3.15A)
3C
THERMAL FUSE
(102°C)
INDOOR
FAN MOTOR
THERMAL FUSE
(99°C)
RY-PWR
Untitled-5 6/30/00, 7:54 AM14

– 15 –
MAC9509078C2
CS-MA90KE
Wiring Diagram
CS-MA70KE CU-MA190KE
CS-MA120KE
W
CN-DISP (W)
321
(PIPE TEMP.)
SENSOR SENSOR
(INTAKE TEMP.)
P
5
Y
O
R
BR
CN-STM (G)CN-TH (Y)
1324
(FLAP)
MOTOR
4 231
(102°C)
THERMAL FUSE
Y/G
21
31
AC(W)
2.0A
FUSE
L
P
CN-MTR (G)
W W W W
Y
R
B
MOTOR
FAN
123
AUTO
SW DOWN SW
PUMP
POWER SUPPLY CORD
CONTROLLER
ELECTRONIC
CN-DISP (W) BA
CN-RCV (W)
B
B
123
(RECEIVER)
CONTROLLER
ELECTRONIC
CN-RCV (W)
CONTROL
REMOTE
WIRELESS
DISPLAY LAMP
4321
4321
B
MAIN SW
1
2
3
4
R
R
BL
W
REMOTE CONTROL No
TRANSFORMER
T(BL)
T (BL)
ZNR1
CN-T(W)CN-FUSE (B)
FM (B)
RY-HOT
3
312
4
4
CAPACITOR
B
R
Y
W
BL
TERMINAL
OUTDOOR UNIT
BR
B
INDOOR UNIT TERMINAL
COMPRESSOR
B
HOT(R)
SR
C
REDBLUE
YELLOW
TRADE MARK
COMPRESSOR TERMINAL
T (BL) T (BL)
BL
BLR
R
CORE
BR
AC (BR)
250V
(TEST RUN)
THERMAL FUSE
(99°C)
ZNR2
CT1
BL
428
76
R
GRY
MAGNETIC RELAY B
ELECTROLYTIC
CAPACITOR
67
824
MAGNETIC RELAY A
GRY
W
Y
R
B
CAPACITOR
B
B
B
FAN MOTOR
COIL
REVERSING VALVE
CAPACITOR
ELECTROLYTIC
SSR1
BL
BL
BR
3
12
PROTECTOR
OVER LOAD
GRY
TRS
BL
BL BL
COMP (BL)
CR1
W
Y/G
REMARKS:
B:BLUE
BR :BROWN
BL :BLACK
W:WHITE
R:RED
O:ORANGE
P:PINK
Y/G :YELLOW/
GREEN
GRY:GRAY
2RS122D5AB02 (Ω)
5.63
12.17
CONNECTION
C-R
C-S
Resistance of Compressor Windings
CS-MA70KE / CU-MA190KE
CS-MA120KE / CU-MA190KE
2KS224D5AC02 (Ω)
2.45
3.86
CONNECTION
C-R
C-S
Resistance of Outdoor Fan Motor Windings
CWA95245 (Ω)
312.9
419.7
CONNECTION
BLUE - YELLOW
YELLOW - RED
W
CN-DISP (W)
321
(PIPE TEMP.)
SENSOR SENSOR
(INTAKE TEMP.)
P
5
Y
O
R
BR
CN-STM (G)CN-TH (Y)
1324
(FLAP)
MOTOR
4 231
(102°C)
THERMAL FUSE
Y/G
21
31
AC(W)
2.0A
FUSE
L
P
CN-MTR (G)
W W W W
Y
R
B
MOTOR
FAN
123
AUTO
SW DOWN SW
PUMP
POWER SUPPLY CORD
CONTROLLER
ELECTRONIC
CN-DISP (W) BA
CN-RCV (W)
B
B
123
(RECEIVER)
CONTROLLER
ELECTRONIC
CN-RCV (W)
CONTROL
REMOTE
WIRELESS
DISPLAY LAMP
4321
4321
B
MAIN SW
1
2
3
4
R
R
BL
W
REMOTE CONTROL No
TRANSFORMER
T(BL)
T (BL)
ZNR1
CN-T(W)CN-FUSE (B)
FM (B)
RY-HOT
3
312
4
4
CAPACITOR
B
R
Y
W
BL
TERMINAL
OUTDOOR UNIT
BR
B
INDOOR UNIT TERMINAL
COMPRESSOR
B
HOT(R)
SR
C
REDBLUE
YELLOW
TRADE MARK
COMPRESSOR TERMINAL
T (BL) T (BL)
BL
BLR
R
CORE
BR
AC (BR)
250V
(TEST RUN)
THERMAL FUSE
(99°C)
ZNR2
CT1
TRS
BL
BL
BL
428
76
R
GRY
MAGNETIC RELAY B
ELECTROLYTIC
CAPACITOR
67
824
MAGNETIC RELAY A
GRY
W
Y
R
B
CAPACITOR
B
B
B
FAN MOTOR
COIL
REVERSING VALVE
CAPACITOR
ELECTROLYTIC
1
2
OVER LOAD
PROTECTOR
SSR1
W
BL
BL
BR
COMP (BL)
BL
GRY
Y/G
CR1
W
Untitled-5 6/30/00, 7:54 AM15

– 16 –
MAC9509078C2
CS-MA90KE
Wiring Diagram
CS-MA90KE / CU-MA180KE
CS-MA120KE / CU-MA240KE
W
CN-DISP (W)
321
(PIPE TEMP.)
SENSOR SENSOR
(INTAKE TEMP.)
P
5
Y
O
R
BR
CN-STM (G)CN-TH (Y)
1324
(FLAP)
MOTOR
4 231
(102°C)
THERMAL FUSE
Y/G
21
31
AC(W)
3.15A
FUSE
L
P
CN-MTR (G)
W W W W
Y
R
B
MOTOR
FAN
123
AUTO
SW DOWN SW
PUMP
POWER SUPPLY CORD
CONTROLLER
ELECTRONIC
CN-DISP (W) BA
CN-RCV (W)
B
B
123
(RECEIVER)
CONTROLLER
ELECTRONIC
CN-RCV (W)
CONTROL
REMOTE
WIRELESS
DISPLAY LAMP
4321
4321
B
MAIN SW
1
2
3
4
R
R
BL
W
REMOTE CONTROL No
TRANSFORMER
T(BL)
T (BL)
ZNR1
CN-T(W)CN-FUSE (B)
FM (B)
RY-HOT
3
312
4
4
CAPACITOR
B
R
Y
W
BL
TERMINAL
OUTDOOR UNIT
BR
B
INDOOR UNIT TERMINAL
COMPRESSOR
B
HOT(R)
SR
C
REDBLUE
YELLOW
TRADE MARK
COMPRESSOR TERMINAL
T (BL) T (BL)
BL
BLR
R
CORE
BR
AC (BR)
250V
(TEST RUN)
THERMAL FUSE
(99°C)
ZNR2
CT1
TRS
BL
BL
BL
428
76
R
GRY
MAGNETIC RELAY B
ELECTROLYTIC
CAPACITOR
67
824
MAGNETIC RELAY A
GRY
W
Y
R
B
CAPACITOR
B
B
B
FAN MOTOR
COIL
REVERSING VALVE
CAPACITOR
ELECTROLYTIC
1
2
OVER LOAD
PROTECTOR
SSR1
W
BL
BL
BR
COMP (BL)
BL
GRY
Y/G
CR1
WW
CN-DISP (W)
321
(PIPE TEMP.)
SENSOR SENSOR
(INTAKE TEMP.)
P
5
Y
O
R
BR
CN-STM (G)CN-TH (Y)
1324
(FLAP)
MOTOR
4 231
(102°C)
THERMAL FUSE
Y/G
21
31
AC(W)
3.15A
FUSE
L
P
CN-MTR (G)
W W W W
Y
R
B
MOTOR
FAN
123
AUTO
SW DOWN SW
PUMP
POWER SUPPLY CORD
CONTROLLER
ELECTRONIC
CN-DISP (W) BA
CN-RCV (W)
B
B
123
(RECEIVER)
CONTROLLER
ELECTRONIC
CN-RCV (W)
CONTROL
REMOTE
WIRELESS
DISPLAY LAMP
4321
4321
B
MAIN SW
1
2
3
4
R
R
BL
W
REMOTE CONTROL No
TRANSFORMER
T(BL)
T (BL)
ZNR1
CN-T(W)CN-FUSE (B)
FM (B)
RY-HOT
3
312
4
4
CAPACITOR
B
R
Y
W
BL
TERMINAL
OUTDOOR UNIT
BR
B
INDOOR UNIT TERMINAL
COMPRESSOR
B
HOT(R)
SR
C
REDBLUE
YELLOW
TRADE MARK
COMPRESSOR TERMINAL
T (BL) T (BL)
BL
BLR
R
CORE
BR
AC (BR)
250V
(TEST RUN)
THERMAL FUSE
(99°C)
ZNR2
CT1
TRS
BL
BL
BL
428
76
R
GRY
MAGNETIC RELAY B
ELECTROLYTIC
CAPACITOR
67
824
MAGNETIC RELAY A
GRY
W
Y
R
B
CAPACITOR
B
B
B
FAN MOTOR
COIL
REVERSING VALVE
CAPACITOR
ELECTROLYTIC
1
2
OVER LOAD
PROTECTOR
SSR1
W
BL
BL
BR
COMP (BL)
BL
GRY
Y/G
CR1
W
REMARKS:
B : BLUE
BR : BROWN
BL : BLACK
W : WHITE
R : RED
O : ORANGE
P : PINK
Y/G : YELLOW/
GREEN
GRY : GRAY
Resistance of Compressor Windings
CS-MA90KE / CU-MA180KE
CWA95245 (Ω)
312.9
419.7
Resistance of Outdoor Fan Motor Windings
CONNECTION
BLUE - YELLOW
YELLOW - RED
CONNECTION
C-R
C-S
2PS164D3AD02 (Ω)
3.43
4.76
CS-MA120KE / CU-MA240KE
CONNECTION
C-R
C-S
2KS224D5AC02 (Ω)
2.45
3.86
Untitled-5 6/30/00, 7:54 AM16

– 17 –
MAC9509078C2
CS-MA90KE
Operation Details
Time Delay Safety Control (3 minutes)
7 minutes Time Saved Control
Anti-Freezing Control
Compressor Reverse Rotation
Protection Control
Compressor
restarts
(3 minutes waiting)
Compressor
OFF
➡➡
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.
• After the compressor starts for 50 seconds but the outdoor fan motor is still OFF, the compressor will stop and
restart automatically. (Time Delay Safety Control is valid).
• If the above phenomenon is repeated for 3 times, the compressor will stops.
• The above phenomenon is reset when there is a change to heating mode or stopped by Remote Control Switch.
• If the compressor is operating continually for 5 minutes or longer and the temperature difference between intake air
and indoor heat exchanger is 2.5°C or less for 2 minutes, compressor will stop and restart automatically.
(Time Delay Safety Control is valid).
∆ T = intake air temperature – indoor heat exchanger temperature
This is to protect reverse rotation of the compressor when there is a instantaneous power failure.
• 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
Compressor
restarts
(3 minutes waiting)
Compressor
OFF
➡➡
Comp. operates for 50 secs.
and
Fan Motor OFF
Compressor Protection Control
• Compressor starts for >5 minutes
• ∆ T ≤2.5°C for 2 minutes
Untitled-5 6/30/00, 7:54 AM17

– 18 –
MAC9509078C2
CS-MA90KE
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
Indoor
fan
Comp.
SLo SLo SLo SLo
ON ONOFF
stop stop stop
30"
stop
30"160"
1
40" 40"
20"
✕
..
.
.2
✕
..
.
.
*1 Fan Speed is Hi until the compressor stops (when the set temperature is reached).
*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
abcdefghijklmnopqrstuvwxyz
Basic time
Compressor
Indoor Fan
Outdoor Fan
Operation LED
4-way valve
1’ 3’ 1’ 7’ 1’ 3’
4’
1.5˚C
ON
OFF
Comp.
Intake Air
Temperature
Comp.
Set Temp.
Indoor
Heat
Exchanger
Temp.
10°C
2°C
Stop
Operation
Untitled-5 6/30/00, 7:54 AM18

– 19 –
MAC9509078C2
CS-MA90KE
Operation Details
Time Delay Safety Control
Anti-Freezing Control
Compressor Reverse Rotation
Protection
Automatic Fan Speed Mode
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.)
• Onceroomtemperaturereaches below Soft DryOFFtemperature, IndoorFan,Compressorand 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.)
• Same as Compressor Protection Control for Cooling Mode Operation. (Refer page 17)
• Same as Compressor Reverse Rotation Protection Control for Cooling Mode Operation. (Refer page 17)
When Automatic Fan Speed is selected at Remote Control during Soft Dry Operation.
• Fan speed rotates at SLo.
• Deodorizing Control.
Indoor
fan
COMP
stop stop stop
SLo SLo SLo
ON ON
OFF
40" 40"6'
Compressor Protection Control
Untitled-5 6/30/00, 7:54 AM19