Panasonic CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD / CS-PA9DKD / CU-PA9DKD / CS-PC9DKD / CU-PC9DKD Service Manual ▷ View online
a b c d e f g h i j k l m n o p q r
2
42
34
32
30
OFF
ON
1'
58''
30
30'
150'
Indoor heat
exchanget
Temp.
exchanget
Temp.
Intake Temp.
Basic Time
Compressor
Indoor Fan
Outdoor Fan
Operation Indicator
Operation Indicator
4-way valve
Automatic Fan Speed
During Heating Operation, use remote controller to select Auto Fan Speed mode.
Indoor Fan Speed is between “Me” and “Slo”.
Indoor Fan Speed is between “Me” and “Slo”.
Me
Lo
Lo-
S Lo
S Lo
(
)
(
)
(
)
(
)
45
41
34
30
45
41
34
30
38
30
28
15
38
30
28
15
Temperature of heat exchanger
Temperature of heat exchanger
Stop
Time
Time Graph for Heating Operation
Warm booting control(indoor fan Off)
Warm booting control(indoor fan Super Slo)
Warm booting control(indoor fan Super Slo)
Prevent cool air
EORZLQJRXW
a - b
c - d
h - k , o - r
c - d
h - k , o - r
:
:
:
:
:
<Operation status>
Blink
Operate
Stop
Manual fan speed
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CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
26
Deice Control
Deice operation is to protect the outdoor unit from freezing.
Normal Deice Operation
Deicing starts 30 minutes after heating mode operation or 60 minutes after the latest deicing operation. If temperature of
Deicing starts 30 minutes after heating mode operation or 60 minutes after the latest deicing operation. If temperature of
outdoor piping, tested by TRS, falls to -3
(TRS OFF) or below for continuously 50 seconds, deicing operation starts.
Overload Deicing Operation
During heating operation, if the accumulative stopping time of outdoor fan reaches 60 minutes,
deicing operation will start 1 minute after compressor starts.
Deicing operation ends under conditions below
(a) After 12 minutes.
(b) Temperature of outdoor unit rises to 4
(b) Temperature of outdoor unit rises to 4
.
(c) As the illustration showed bellow and due to Time Delay (Td), deicing won’t ends immediately.
Deicing Operation Time(T)
3 min
3min
T 7min
7 min T 9min
T 9min
Deicing Operation Time(T)
3 min
3min
T 7min
7 min T 9min
T 9min
Td(s)
0
60
120
180
Td(s)
0
60
120
180
Once deicing operation starts, it won’t end until 60 seconds later.
When deicing operation ends, compressor will stop for 30 seconds, and 4-way valve remains at cooling mode operation
for 10 seconds.
Time Graph for Normal Deicing Operation
Time
<Operation status>
<Operation status>
a-c
Deicing confirmation
c-g
Deicing operation(time reset)
h-j,u-w
Warm Booting
o-r
Deicing(TRS )
42
34
30
Indoor
Piping
T
emp.
a b c d e f g h i
j
k l m n o p q r s t u v w x y z
Slo Lo
10S
20S 20S
20S
20S 20S
10S 20S
Td
Operation
Stop
Blink
or
Basic Time
Compressor
Indoor Fan
Outdoor Fan
Indoor Fan
Outdoor Fan
Operation LED
4-way valve
4-way valve
max60'
max12'
max12'
max60'
60'
Slo Lo
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
Time Graph for Overload Deicing
a b c d e f g h i j k l m n o p q
49
Max
12’
12’
<Operation status>
Overload control
a-i
i-l
Overload deicing(timer)
l-m:
Warm booting control
m-r
Overload control
Out door fan stop for 60' accumulatively 20’’ 20’’
51
Outdoor Heat
Exchanger
Outdoor Heat
Exchanger
10’’
20’’
Basic time
Compressor
Indoor fan
Outdoor fan
Operation Indicator
4-way valve
)
g-h
(Indoor fan stop)
h-i
(Indoor fan”SL.”)
Operation
Stop
Blink
Time
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CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
8.4.
Automatic Mode Operation
Standard for Determining Operation Mode
Cooling mode
Soft Dry mode
Heating mode
Cooling mode
Soft Dry mode
Heating mode
Intake Air
temperature
Setting Temperature (Standard)
23
20
25
22
22
21
One hour after the above determination, the unit will operate according to the table below.
First
determination
determination
Cooling
Dry
Heating
Second Determination
Cooling
Dry
Heating
23
or above
25
or above
20
or above
23
below
20
below
25
below
Second Determination:
First Determination:
Higher
Standard
Lower
2
0
2
Indoor fan operates at super low speed for 25 seconds.
After judging indoor air temperature, the operation is determined and operation continued at the mode determined.
If indoor temperature is less than 16
, heating operation will immediately operate.
After the operation mode has been determined, the mode does not change. However,Soft Dry mode operation
includes cooling mode operation.
If automatic mode operation is started while the unit is operating,operation will continue.
If current operation is in cooling mode (including the cooling mode operation when is a part of Soft Dry mode
operation) it will be maintained, and if current operation is not cooling mode, the appropriate operation mode is
determined for 25seconds at super slow fan speed.Then the selected mode will continue.
Room temperature adjustment
A)
B)
C)
D)
E)
F)
8.5.
Air Circulation Mode Operation(Only for PC7DKD,PC9DKD)
1. An additional heater may make the warm air evenly covering each corner of the room.
2. When the temperature near the ceiling reaches the setting temperature, Air Circulation Mode Operation commences
at low airflow volume. It stops when the temperature drops to 2
below the setting temperature.
3. The vertical airflow direction louver will not swing.
28
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
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