Panasonic CS-MC90KA / CU-MC180KA / CS-MC90KA / CU-3MC200KA / CS-MC120KA / CU-MC240KA Service Manual ▷ View online
– 20 –
CS-MC90KA
MAC9902014C3
Operation Details
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.
• 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.
Time Delay Safety Control (3 minutes)
7 minutes Time Saved Control
Anti-Freezing Control
• 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.
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.
Control is valid for Cooling Operation.
Compressor Reverse Rotation
Protection Control
Protection Control
• Compressor starts for
>
5 minutes
•
∆
T
<
2.5
°
C for 2 minutes
Compressor
restarts
(3 minutes waiting)
Compressor
OFF
➡
➡
Recovery
4 min
Compressor OFF
Indoor Heat
Exchanger
Temperature
(°C)
Exchanger
Temperature
(°C)
2
10
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CS-MC90KA
MAC9902014C3
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.
• Fan speed rotates in the range of Hi to Me.
• Deodorizing Control.
Operation Details
Cooling Operation Time Diagram
*
1 Fan Speed is Hi until the compressor stops (when the room temperature reaches
setting temperature).
*
2 Fan Speed is Me after the compressor restarts.
Operation
Stop
<Description of operation>
d – g
:
Time Delay Safety Control (waiting for 3 minutes)
g – h
:
60 sec. Forced Operation
h – 0
:
7 min. Time Saved Control
q – t
:
Anti Freezing Control
<Condition>
a – h
:
When outdoor temperature is high
h – p
:
When outdoor temperature is moderate
p – w
:
When outdoor temperature is low
Indoor
Fan
Comp.
SLo
Lo
Lo
Lo
ON
ON
OFF
stop
stop
stop
30"
stop
30"
160"
1
40"
40"
20"
✕
...
.
2
✕
...
.
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
Basic Time
Compressor
Indoor Fan
Outdoor Fan
Operation LED
1’
3’
1’
7’
1’
3’
4’
1.5
°
C
ON
OFF
Comp.
Intake Air
Temperature
Temperature
Comp.
Set Temp.
Indoor
Heat
Exchanger
Temp.
Heat
Exchanger
Temp.
10
°
C
2
°
C
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CS-MC90KA
MAC9902014C3
Operation Details
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 will operate and stop at 4-second intervals at low speed.
• The operation will be switched on and off for up to 10 minutes “ON” and 6 minutes “OFF”. Once Soft Dry opera-
• The operation will be switched on and off for up to 10 minutes “ON” and 6 minutes “OFF”. Once Soft Dry opera-
tion is turned off, it stops 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 Reverse Rotation Protection Control for Cooling Mode Operation. (Refer page 20)
When Automatic Fan Speed is selected at Remote Control during Soft Dry Operation.
• Fan speed rotates at SLo and Lo speed.
• Deodorizing Control.
• Fan speed rotates at SLo and Lo speed.
• Deodorizing Control.
*
SLo: Indoor Fan rotates at 4-second intervals at low speed.
Time Delay Safety Control
Anti-Freezing Control
Compressor Reverse Rotation
Protection
Protection
Automatic Fan Speed Mode
Indoor
Fan
COMP
stop
stop
stop
SLo
Lo
SLo
ON
ON
OFF
40"
40"
6'
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CS-MC90KA
MAC9902014C3
Operation Details
Soft Dry Operation Time Diagram
<Description of operation>
a – c, p~r :
Cooling Operation
c – p
:
Soft Dry Operation
e – f
:
Soft Dry OFF
j – l
:
60 sec. Forced Operation
q – t
:
Anti Freezing Control
<Condition>
a – h :
When outdoor temperature is high
h – p :
When outdoor temperature is moderate
p – u :
When outdoor temperature is low
Soft Dry operation
Operation
Stop
- - - - -
a b c d e f g h i j k l m n o p q r s t u v
Basic Time
Compressor
Indoor Fan
Outdoor Fan
Operation LED
10’
1’
1’
1’
6’
6’
6’
6’
4’
1’
Cooling ON
Cooling OFF
Soft Dry ON
Soft Dry ON
Soft Dry OFF
1.5°C
1.0°C
SLo
SLo
SLo
Lo
SLo
SLo
SLo SLo
SLo
SLo
SLo
SLo
Indoor
Heat Exchanger
Temp.
Heat Exchanger
Temp.
10°C
2°C
6’
Intake Air
Temperature
Temperature
Set Temp.
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