Panasonic CS-A12CTP / CU-A12CTP5 / CS-A18CTP / CU-A18CTP5 / CS-A24CTP / CU-A24CTP5 Service Manual ▷ View online
1
Functions
2
2
Product Specifications
5
3
Dimensions
11
4
Refrigeration Cycle Diagram
13
5
Block Diagram
15
6
Wiring Diagram
17
7
Operation Details
19
8
Operating Instructions
35
9
Installation Instructions
39
10 Servicing Information
50
CS-A12CTP CU-A12CTP5
CS-A18CTP CU-A18CTP5
CS-A24CTP CU-A24CTP5
CS-A18CTP CU-A18CTP5
CS-A24CTP CU-A24CTP5
11 Troubleshooting Guide
51
12 Technical Data
53
13 Exploded View
55
14 Replacement Parts List
56
15 Exploded View
57
16 Replacement Parts List
58
17 Exploded View
59
18 Replacement Parts List
60
19 Electronic Circuit Diagram
61
Room Air Conditioner
CONTENTS
Page
Page
Order No. MAC0301002C8
1 Functions
MODE
SLEEP FAN SPEED
RESET
TIMER
AUTO
MANUAL
AUT
AUTO
HEA
HEAT
COOL
COOL
DR
DRY
FAN
AN
SPEED
SPEED
H
H
OFF
OFF
ON
ON
A
B
A
B
TEMP
OFF/ON
AIR SWING
SELECT SET/CANCEL
Remote Control
Operation OFF / ON
Room Temperature Setting
TEMP.
Operation Mode Selection
•
AUTO
Automatic Operation Mode
•
HEAT
Heating Operation Mode
•
COOL
Cooling Operation Mode
•
DRY
Soft Dry Operation Mode
MODE
Sleep Mode Operation OFF / ON
Indoor Fan Speed Selection
FAN SPEED
•
Low Fan Speed
•
Medium Fan Speed
•
High Fan Speed
•
AUTO
Automatic Fan Speed
Airflow Direction Control
TIMER
12-hour Timer Setting
AIR SWING
•
AUTO
Automatic Airflow Direction
Control
Control
•
MANUAL
Airflow Direction Manual
Control
Control
Heating, Cooling, Soft Dry Operation.
• Temperature Setting (16°C to 30°C)
• Temperature Setting (16°C to 30°C)
Automatic Operation
•
•
Operation with 2°C higher than
standard temperature.
standard temperature.
•
Operation with standard temperature.
•
Operation with 2°C lower than
standard temperature.
standard temperature.
•
SELECT
To select delay OFF Timer,
ON Timer, OFF/ON Timer
and ON/OFF Timer
ON Timer, OFF/ON Timer
and ON/OFF Timer
•
To set hours setting
•
To set hours setting
•
SET/CANCEL
To start delay OFF and ON
timer, cancellation
timer, cancellation
OFF / ON
I
Self illuminating
button
SLEEP
2
CS-A12CTP CU-A12CTP5 / CS-A18CTP CU-A18CTP5 / CS-A24CTP CU-A24CTP5
Indoor Unit
Sleep Mode Auto Control
• Indoor Fan operates refer to Indoor Fan
Speed.
• Operation stops after 8 hours.
Indoor Fan Speed Control
• High, Medium and Low.
• Automatic Fan Speed Mode
• Automatic Fan Speed Mode
–
Heating : Fan speed varies from Me
→
SSLo in accordance with
indoor heat exchanger.
indoor heat exchanger.
–
Cooling : Fan rotates at Hi, Me and
SLo speed.
–
Soft Dry : Fan rotates at Lo- speed.
• Automatic air swing and manual adjusted
by remote control for vertical airflow.
• Manually adjusted by hand for horizontal
airflow.
Airflow Direction Control
Automatic Operation Button
• Press for < 5s to operate Automatic
operation mode.
(Used when the remote control cannot be used.)
(Used when the remote control cannot be used.)
• Press continuously for 5s or < 10s to
operate Test Run/Pump down. “Beep”
sound will be heard at the 5th second.
(Used when test running or servicing.)
sound will be heard at the 5th second.
(Used when test running or servicing.)
• Press continuously for 10s and above to
omit or resume the remote control signal
receiving sound. “Beep, beep” sound will
be heard at the 10th second.
receiving sound. “Beep, beep” sound will
be heard at the 10th second.
AUTO
OFF / ON
Operation Indication Lamps (LED)
•
POWER
(Green) ......... Lights up in operation,
blinks in Automatic
Operation Mode judging,
deice operation and
hotstart.
Operation Mode judging,
deice operation and
hotstart.
•
SLEEP
(Orange) ......... Lights up in Sleep Mode
Operation.
•
TIMER
(Orange) ....... Lights up in Timer
Setting.
•
AIR SWING
(Orange) ... Lights up in Auto Air
Swing Mode Operation.
Time Delay Safety Control
• Restarting is inhibited for appro. 3 minutes.
7 Minutes Time Save Control
• Cooling Operation only.
Anti-Dew Formation Control
• Anti-Dew Formation Control for indoor unit
discharge area.
Anti-Freezing Control
• Anti-Freezing control for indoor heat
exchanger. (Cooling and Soft Dry)
Random Auto Restart Control
• Operation is restarted randomly after
power failure at previous setting mode.
Operation Mode
• Heating, Cooling, Soft Dry and Automatic
Mode.
30 Minutes Time Save Control
• Heating Operation only.
Hot-Start Control
• At Heating Operation the indoor fan will
operate at SLo speed when indoor heat
exchanger temperature reaches 30°C.
exchanger temperature reaches 30°C.
Anti Cold Draft Control
• The indoor fan operates at SSLo when the
indoor heat exchanger temperature is low.
(During Heating mode thermal off)
(During Heating mode thermal off)
3
CS-A12CTP CU-A12CTP5 / CS-A18CTP CU-A18CTP5 / CS-A24CTP CU-A24CTP5
Outdoor Unit
CU-A12CTP5
• To protect compressor from reverse
rotation when there is a instantaneous
power failure.
power failure.
60 Secs. Forced Operation Control
• Once the compressor is activated, it does
not stop within the first 60 secs.
However, it stops immediately with remote
control stop signal.
However, it stops immediately with remote
control stop signal.
Overload Protector
• OLP to protect the compressor for A12CT
only.
Inner protector for A18CT & A24CT only.
Inner protector for A18CT & A24CT only.
Compressor Reverse Rotation
Protection Control
Protection Control
Outdoor Fan Operation Control
A18 / 24CT
• 4-pole induction motor (2 speed).
• For Cooling or Soft Dry operation
• 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.
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.
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
temperature.
piping temperature and the outdoor
temperature.
A12CT
• 6-pole induction motor (1 speed).
• 6-pole induction motor (1 speed).
CU-A18CTP5
CU-A24CTP5
CU-A24CTP5
4-Way Valve Control
• When the unit is switched to “OFF” during
Heating Operation, 4-way valve stays at
Heating position for 5 minutes.
Heating position for 5 minutes.
Overload Protection Control
• Outdoor fan stops when indoor heat
exchanger temperature rises to 51°C and
above, and restarts when the indoor heat
exchanger temperature drops to 49°C and
below (A12CT).
above, and restarts when the indoor heat
exchanger temperature drops to 49°C and
below (A12CT).
• Compressor stop when indoor heat
exchanger temperature reaches 65°C
(A12CT), 68°C (A18CT & A24CT).
(Heating Operation Only)
(A12CT), 68°C (A18CT & A24CT).
(Heating Operation Only)
Deice Control
• To prevent frosting at outdoor heat ex-
changer. (Only for Heating Operation)
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).
will stop. (Cooling and Soft Dry Operation
only).
4
CS-A12CTP CU-A12CTP5 / CS-A18CTP CU-A18CTP5 / CS-A24CTP CU-A24CTP5