Read Panasonic CS-A120TE / CS-A180TE / CS-A240TE / CU-A120TE / CU-A180TE / CU-A240TE Service Manual online
ORDER NO. MAC9710021C2
Room Air Conditioners
Contents
●
Functions ........................................................... 1 ~ 2
●
Product Specifications ....................................... 3 ~ 8
●
Dimensions ...................................................... 9 ~ 10
●
Refrigeration Cycle Diagram .................................. 11
●
Block Diagram ................................................ 12~ 13
●
Wiring Diagram .............................................. 14 ~ 15
●
Operation Details ........................................... 16 ~ 18
●
Servicing Information ............................................. 19
●
Troubleshooting Guide .................................. 20 ~ 21
●
Technical Data ....................................................... 22
●
Exploded View ................................................. 23, 25
●
Replacement Parts List .................................... 24, 26
●
Electronic Parts List ............................................... 27
CS-A120TE / CU-A120TE
CS-A180TE / CU-A180TE
CS-A240TE / CU-A240TE
CS-A180TE / CU-A180TE
CS-A240TE / CU-A240TE
Service Manual
1997 Matsushita Industrial Corp. Sdn. Bhd.
Untitled-1
6/30/00, 9:22 PM
1
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigeration circuit.
!
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain
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.
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-1
6/30/00, 9:22 PM
2
– 1 –
CS-A120TE
Functions
Remote Control
Operation START/STOP
Operation Mode Selection
Indoor Fan Speed Selection / Time
Setting
Setting
Power Switch OFF/ON
Sensing The Room Temperature
●
Room Temperature Sensor (thermistor)
Starting Current Control
●
Indoor Fan is delayed for 1.6 seconds at the
starting
starting
Time Delay Safety Control
●
Restarting is inhibited for apporox. 3 minutes
Circuit Protection Control
●
30 seconds forced operation of the compres-
sor
sor
Indoor Fan Speed Control
●
High, Med, Low
Operation Indication Lamps (LED)
(green) ...... Lights up in operation
(red) .......... Automatic Airflow Direction in
(red) .......... Automatic Airflow Direction in
operation
(orange) .... Timer in operation
Soft Dry Operation Mode
●
Intermittent operation of Fan at low speed
Room Temperature Control
●
Maintains the room temperature accordance
with the Setting Temp.
with the Setting Temp.
Remote-control Transmitter
Indoor Unit
e
.... up to 12
.... up to 1
r
e
r
Room Temperature Setting / Time
Setting
Setting
●
Temperature Setting (20°C to 30°C)
●
o
(higher),
n
(standard),
m
(lower)
...Automatic Operation
Timer Operation Selection
●
ON/OFF Dual Timer Setting
Timer Operation Set/Cancel
●
Set/Cancel the selected Timer Operation
Airflow Direction Control
v
v
v
v
v
●
Airflow Direction Manual Control
c
c
c
c
c
●
Automatic Airflow Direction Control
s
Automatic Operation Mode
d
Cooling Operation Mode
f
Soft Dry Operation Mode
#
Heating Operation Mode
s d f
#
High Speed
Medium Speed
Low Speed
k
j
h
.... up to 12
.... up to 1
r
e
q
c
b
SET/C
t
/
x
Untitled-9
6/19/00, 6:35 PM
1
– 2 –
CS-A120TE
Anti-freezing Control For The
Evaporator
Evaporator
●
Compressor will be stopped when the
Evaporator’s piping temperature is 0°C or
less for three minutes
Evaporator’s piping temperature is 0°C or
less for three minutes
●
Restarting at 12°C or higher (Time Delay
Safety Control has a priority)
Safety Control has a priority)
Airflow Direction Control
Automatic Airflow Direction Control
●
The louver automatically swings up and down
(Cooling, Soft Dry)…horizontal and 30°
downward
(Cooling, Soft Dry)…horizontal and 30°
downward
●
The louver is set at 60° downward during
Heating Operation
Heating Operation
●
The louver is set at horizontal when the fan is
stopped
Airflow Direction Manual Control
stopped
Airflow Direction Manual Control
●
Can be set within a range at horizontal to 60°
downward
downward
Hot-start Control (Heating)
●
The indoor fan stops until the Evaporator
piping temperature will be reached.
piping temperature will be reached.
Automatic Restarting Control
●
7 minutes automatic restarting at Cooling,
Soft Dry operation
Soft Dry operation
Sleep Mode Auto Control
●
The Fan is switched to Low fan speed and the
unit will be stopped after 5 hours
unit will be stopped after 5 hours
●
The setting temperature will be raised by 1°C
at the starting and by 1°C one hour later (Soft
Dry of Cooling Operation)
at the starting and by 1°C one hour later (Soft
Dry of Cooling Operation)
●
The setting temperature will be dropped by
2°C at the starting and by 3°C one hour later
(Heating operation).
2°C at the starting and by 3°C one hour later
(Heating operation).
Deice (defrost) Control
●
Both the indoor and outdoor fan stops during
deicing
deicing
●
Hot start after deice ends
●
Starts operation when indoor piping
temperature drops below temperature setting
60 ± 10 minutes after heating start or deice
ends
temperature drops below temperature setting
60 ± 10 minutes after heating start or deice
ends
●
Operations LED flashes.
Overload Protection
●
Thermostat OFF if the Piping temperature
exceeds 100°C
exceeds 100°C
Automatic Operation Determination
●
Selects cooling, dry or heating with the indoor
intake sensor
25°C or higher ..... cooling
21 to 24°C ........... dry
20°C or lower ...... heating
intake sensor
25°C or higher ..... cooling
21 to 24°C ........... dry
20°C or lower ...... heating
●
5-minutes automatic restarting is activated
instead of 7-minutes
instead of 7-minutes
Functions
Outdoor Unit
Overload Protection
30sec. Forced Operation Control
●
Once the compressor is activated it does not
stop for 30 secs
stop for 30 secs
●
Stops immediately with remote control stop
Untitled-9
6/19/00, 6:35 PM
2