Panasonic CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD / CS-PA9DKD / CU-PA9DKD / CS-PC9DKD / CU-PC9DKD Service Manual ▷ View online
21
8 Operation Details
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
8.1
.
Cooling Mode Operation
When selecting the Cooling Mode Operation, the unit will operate according to the setting by the Remote Controller or
the control panel on the indoor unit and the operation is as the following.
Time Delay Safety Control
3 min.----If the compressor stops, it will not restart within 3 minutes.(Protection of compressor).
7 Minutes Time Save Control
7 min.----The unit will automatically operate in 7 minutes even if the room temperature is not reached.
(Prevention of raising the humidity)
(Prevention of raising the humidity)
Evaporator
Temperature
Temperature
(
)
10
2
Restart
4 minutes
Compressor ceases
Time
Anti-Freezing Control
If temperature of evaporator is lower than 2
continuously
for 4 minutes, the compressor will cease to prevent the
evaporator from freezing. Fan speed setting will not be
changed.
When temperature of evaporator reaches 10
evaporator from freezing. Fan speed setting will not be
changed.
When temperature of evaporator reaches 10
,compressor
will restart.
During Cooling Mode Operation, the Time Delay Safety
Control is available.
Control is available.
Indoor Fan
STOP
Slow
Slow
STOP
STOP
Slow
Slow
STOP
ON
Compressor
ON
1 Fan speed will be at
Hi
till the compressor ceases (set temperature reached).
2 Fan speed will be at
Me
when the compressor restarts.
40
30
40
30
20
160
1
2
Automatic Fan Speed Mode
During Cooling Mode Operation, use remote controller to select Automatic Fan Speed.
Deodorization control.
Fan speed will be at the point between "High speed" and "Medium speed".
22
Intake air temperature
Evaporater
temperature
temperature
10
2
Start
Stop
1.5
Basic Time
Comp.
Indoor Fan
Outdoor Fan
Operation Indicator
1
1
3
7
Operation status
Time delay safety control
Compressor Test control
Auto restart control
Anti-freezing Control
Compressor Test control
Auto restart control
Anti-freezing Control
Time
d - g
g - h
h - o
q - t
:
:
:
:
:
:
Operate
Stop
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
3
4’
1’
Time Graph for Cooling Operation
Set temperature
31
29
8.2.
Soft Dry Mode Operation
When selecting Soft Dry mode operation, the operation will be cooling until the room temperature reaches the set temp on
remote control, and then Soft Dry will be activated. (During Soft Dry Mode the fan of indoor unit will operate at super low
speed. The soft dry mode will run for less than 10 minutes.)
Once Soft Dry mode operation is turned off, indoor fan, compressor and outdoor fan will stop for 6 minutes.
COOLING(OFF)
DRY(ON
DRY(OFF)
DRY
COOLING
COOLING(ON)
DRY(ON)
1.5
1.0
DRY(OFF)
Operation area
Time Delay Safety Protection
During cooling mode operation, if the compressor ceased, it will not restart within 3 minutes.
Anti Freezing Control
Same as the denotation in Cooling Operation.(
)
(During Soft Dry Mode Operation, compressor will stop for at least 6 min.)
P21
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
23
Automatic Fan Speed
During Soft Dry Operation, use remote controller to select Auto Fan Speed mode.
Indoor Fan Speed is at “Lo-”
Indoor Fan Speed is at “Lo-”
70
T2
40
T1
Slo
Lo-
OFF
ON
OFF
10
6
70
T2
40
T1
10
Slo
Slo
Lo-
ON
OFF
OFF
OFF
Indoor
fan
fan
Compressor
Time Graph for soft dry operation
a b c
d e
f
g
h i
j
k
l
m n
o
p q
r
s
t
u
Evaporator
temperature
temperature
10 C
o
2 C
o
Basic Time
Comp.
Indoor Fan
Outdoor Fan
Operation Indicator
6
6
6
1
6
1
1
4
Operation status
Time
Operate
Stop
Cooling mode operation
Soft Dry Mode operation
Super
Low
Super
Low
Super
Low
Super
Low
Low
1.5
Cooling mode operation activated
Intake Air temp
1.0
Cooling mode operation stopped
Soft mode operation activated
Soft dry mode operation stop
Cooling Mode Operation
Soft Dry Mode Operation
Soft Dry Mode Operation Stopped
Compressor Test Operation Control
Anti Freezing Control
Soft Dry Mode Operation
Soft Dry Mode Operation Stopped
Compressor Test Operation Control
Anti Freezing Control
a - c , p - r
c - p , r - u
e - f
j - l
q - t
:
:
:
:
:
Slo
Slo
Slo
Slo
Slo
Slo
Slo
Slo
Slo
Slo
Slo
4-way Valve
CS-PA7DKD/CU-PC7DKD / CS-PC7DKD/CU-PC7DKD
8.3.
Heating Mode Operation(Only for PA7DKD,PA9DKD)
When selecting the Heating Mode Operation, the unit will operate according to the setting by the Remote Controller and
the operation is as the following.
Time Delay Safety Control
Over Load protection Control
When temperature of indoor heat exchanger rises to 51
, outdoor fan will stop
when temperature of indoor heat exchanger falls to 49
, outdoor fan will restart.
When temperature of indoor heat exchanger rises to 65
or above, compressor stops, and will restart 4 minutes later.
4-way valve control
Anti-reversing Control
If the compressor stopped by switching off, turning off by remote controller, or power off, it will not restart within 3 minutes.
When room temperature reaches the set temperature on the remote controller, compressor stops and will not restart within
4 minutes.
3 minutes after the compressor stopped, indoor fan will stop for 1 minute. Then indoor fan will resume operation with the
speed at ”super low”
.
Compressor
Stops
Compressor Restarts
4 minutes later
Indoor Heat Exchanger
65
Compressor
Stops
Compressor Restarts
3 minutes later
Compressor runs
5 min
T
5
last for 2 min
T= intake air temperature - evaporator temperature
If the compressor has been continuously running for 5 minutes or longer, and the difference of temperature between
intake air and evaporator is continuously lower than 5.0
or below for 2 minutes, the compressor will stop , and then
restart 3 minutes later.(Time Delay Protection Control is effective.)
During heating mode operation,4-way valve is at
open
mode.
During heating mode operation,if the unit turned off, the 4-way valve will remain
at
at
open
mode for 5 minutes.
Low
Super Low
Super Low
Indoor Fan
Stop
Indoor Fan
Stop
Indoor Heat
Exchanger
Exchanger
Indoor Heat
Exchanger
Exchanger
34
30
(
)
(
)
Warm Booting Control
When turning on the unit by heating mode operation,indoor fan
will be activated when temperature of indoor heat exchanger
reaches 30
will be activated when temperature of indoor heat exchanger
reaches 30
. (See the figure on the right)
Warm boot operation ends when temperature of indoor heat
exchanger reaches 34
exchanger reaches 34
.
24
CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
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