Panasonic Cs C9gkzw Cs C12gkzw Cu C9gkzw Cu C12gkzw Repair Manual

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12.4.7. Dew Prevention control
• To prevent dew formation at indoor unit discharge area.
• This control will be activated if:-
- Cooling mode or Quiet mode.
- Remote Control setting temperature is less than 25°C.
- Fan speed is at CLo or QLo.
- Room temperature is constant (±1°C) for 30 minutes.
- Compressor is continuously running.
• Fan speed and angle of horizontal louver (vertical airflow angle) will be adjusted accordingly in this control.
- Fan speed will be increased slowly if the unit is in quiet mode but no change in normal cooling mode.
- The angle of horizontal louver will be changed as below figure.
Note:
A = Normal operation angle of rotation
B = Dew prevention angle of rotation
Horizontal Louver Angle
During Anti-Dew condensation prevention, the horizontal louver angle in Auto-control are as below figure.
During Anti-Dew condensation prevention, the horizontal louver angle in Manual control are as below figure.
Operation mode Airflow direction auto-control Airflow direction manual control
Cooling, Soft Dry A 12° ~ 32°12°, 15°, 20°, 26°, 32°
B20° ~ 30°22°, 24°, 26°, 28°, 30° 
						

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12.5. Indoor Fan Speed Control
• Indoor Fan Speed can be set using remote control.
12.5.1. Fan Speed Rotation Chart
12.5.2. Automatic Fan Speed Control
• When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the table.
- Fan speed rotates in the range of Hi and Me.
- Deodorizing Control will be activated.
Speed Fan Speed (rpm)
CS-C9GKZW CS-C12GKZW
S Hi 1300 1320
Hi 1210 1300
Me 1000 1060
H Lo 790 960
C Lo 730 900
Lo- 680 850
S Lo 630 820
Q  H i 111 0 1 2 0 0
Q Me 900 960
Q Lo 630 800 
						

							33 • Auto Fan Speed during cooling operation:
1. Indoor fan will rotate alternately between off and on as shown in below diagram.
2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
3. For the first time the compressor operate, indoor fan will be switched to Hi fan speed from Lo- after 70 seconds from the
start of compressor. This cause the room temperature to achieve the setting temperature quickly.
4. During compressor stop, indoor fan will operate at Lo- for the beginning 3 minutes to prevent higher volume of refrigerant
in liquid form returning to the compressor.
5. For the resume of compressor operation, indoor fan will operate at Me fan speed to provide comfort and lesser noise
environment, after 70 seconds from the restart of compressor.
• Auto Fan Speed during Soft Dry operation:
1. Indoor fan will rotate alternately between off and Lo-.
2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose.
3. When compressor at turn off condition for 6 minutes, indoor fan will start fan speed at Lo- to circulate the air in the room.
This is to obtain the actual reading of intake air temperature.
12.5.3. Manual Fan Speed Control
• Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control.
• There are 3 types of fan speed settings: Lo, Me, Hi.
12.6. Outdoor Fan Speed Control
•There is only one speed for outdoor fan motor.
• When the air conditioner is turned on, the compressor and the outdoor fan will operate simultaneously.
• Likewise, both compressor and outdoor fan will stop at the same time if the unit is turned off. 
						

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12.7. Vertical Airflow Direction Control
12.7.1. Auto Control
• When the vertical airflow direction is set to Auto using the remote control, the louver swings up and down as shown in the
diagram.
• When stop operation using the remote control, the discharge vent is reset, and stop at the closing position.
• During Cooling operation or Soft Dry operation, indoor fan motor may stop to rotate at certain periods. At that condition, the
louver will stop swinging and rest at the upper limit.
12.7.2. Manual Control
• When the vertical airflow direction is set to Manual using the remote control, the automatic airflow is released and the airflow
direction louver move up and down in the range shown in the diagram.
• The louver can be adjusted by pressing the button to the desired louver position.
• When stop operation using the remote control, the discharge vent is reset, and stop at the closing position.
12.8. Horizontal Airflow Direction Control
• The horizontal airflow direction louvers can be adjusted manually by hand.
12.9. Powerful Operation
•To achieve the setting temperature quickly.
• When Powerful operation is set, the setting temperature will be automatically decreased 3°C internally against the present
setting temperature (Lower temperature limit: 16°C).
• This operation automatically will be running under SHi fan Speed (Cooling), Lo- Fan Speed (Soft Dry).
• Vertical Airflow Direction:-
- In “Manual” setting, the vane will automatically shift down 10° lower than previous setting.
- In “Auto” setting, the vane will automatically swing up and down. However the lower limit will be shifted 10° downward.
• Powerful operation stops when:-
- Quiet/Powerful button is pressed again.
- Powerful operation has operate for 15 minutes.
- Stopped by OFF/ON operation button.
- Timer OFF activates.
-Operation mode is changed. 
						

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12.10. Quiet Operation
(For Cooling Operation or cooling region of Soft Dry Operation)
•To provide quiet cooling operation condition compare to normal operation.
• Once the Quiet Mode is set at the remote control, the Quiet Mode LED illuminated. The sound level will reduce around 2 dB(A)
for Lo fan speed or 3 dB(A) for Hi/Me fan speed against the present operation sound level.
• Dew formation become severe at Quiet Lo cool, therefore Quiet Lo cool is operated only 1hr 30 min (1hr QLo, 30 min QLo + 50
rpm). After that, it goes back to Lo cool (However Quiet LED remains on).
• Manual Airflow Direction:-
- RPM control during Lo cool
- RPM control during Hi & Me cool
• Auto Fan Speed:-
• Quiet operation stops when:-
- Quiet button is pressed again.
- Stopped by OFF/ON operation button.
- Timer OFF activates.
- Operation mode button is changed. 
						

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12.11. Timer Control
12.11.1. ON Timer
• When the ON Timer is set by using the remote control, the unit will start to operate slightly before the set time, so that the room
will reach nearly to the set temperature by the set time.
• For Cooling and Soft Dry operation, the operation will start 15 minutes before the set time.
• For Automatic operation, the indoor fan will operate at SLo speed for 20 seconds, 15 minutes before the set time to detect the
intake air temperature to determine the operation mode. The operation indication lamp will blink at this time.
12.11.2. OFF Timer
• When the OFF Timer is set by using the remote control, the unit will stop operate according to the desired setting.
Notes:
1. By pressing ON/OFF operation button, the ON Timer or OFF Timer setting will not be cancelled.
2. To cancel the previous timer setting, press CANCEL button.
3. To activate the previous timer setting, press SET button.
4. If main power supply is switched off, the Timer setting will be cancelled.
12.12. Random Auto Restart Control
• If there is a power failure during operation, the air conditioner will automatically restart after 3 to 4 minutes when the power is
resumed.
• It will start with previous operation mode and airflow direction.
• If there are more than one air conditioner unit in operation and power failure occur, restart time for each unit to operate will be
decided randomly using 4 parameters:- intake air temperature, setting temperature, fan speed and air swing louver position.
• This Random Auto Restart Control is not available when Timer is set.
12.13. Remote Control Signal Receiving Sound
• Short beep sound will be heard when:-
- enable initial Patrol Operation.
• Long beep sound will be heard for others setting. 
						

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12.14. Patrol Operation
1. Purpose
To monitor air dirtiness level by using gas sensor and activates e-ion operation whenever air is dirty.
2. Control Condition
a. Patrol operation start condition
• When the unit operation is started with “OFF/ON” button.
• When the unit stops, “Patrol” button is pressed, Patrol individual operation will start.
• During cooling only operation, “Patrol” button is pressed.
b. Patrol operation stop condition
When any of the following condition is fulfilled:
• When “OFF/ON” button is pressed.
• During any operation with Patrol, Patrol button is pressed again.
• When “e-ion” button is pressed.
• When OFF Timer activates.
c. Patrol operation disable
• To disable the Patrol Operation during unit start (default) with “OFF/ON” button, press “Patrol” button and hold for 5
seconds, then release.
• To disable the Patrol Operation, press “Patrol” button and hold for 15 seconds, then release. 
						

							38 3. Control Content
a. Gas Sensor Control
• First 2 minutes from Patrol function activates is stabilization time, during stabilization time, no air dirtiness level is
monitored. The Air Dirtiness level is set to level 2.
• After that, gas sensor starts to record the resistance value at fixed interval. Higher resistance value indicates cleaner air.
• The air dirtiness level is monitored by comparing the current resistance value with maximum resistance value from time to
time to get the Air Dirtiness Value.
• There are 3 air dirtiness level, based on the Air Dirtiness Value:
- Air Dirtiness level 0: Clean
- Air Dirtiness level 1: Moderate
- Air Dirtiness level 2: Contaminated
- Dirtiness level sensitivity adjustment.
It is possible to change the gas sensor sensitivity, where the Threshold value (G1 ~ G4) will be shifted accordingly:
a. Press and release “SET” button.
b. Press “Timer increment” / “Timer decrement” button to select sensitivity. (Low <
–> Standard (Default)  High)
c. Confirm setting by pressing “Timer Set” button. LCD returned to original display after 2 seconds.
d. LCD returned to original display if remote control does not operate for 30 seconds.
b. e-ion Control
• When dirtiness level is 1 or 2, e-ion operation starts.
• If dirtiness level improves from level 2 to level 1, the unit carries out level change after 60 seconds.
• When dirtiness level returns to level 0 continuously for 10 minutes or more, e-ion operation stops.
Dirtiness Level Shift
• For Auto Fan Speed, the fan speed increased based on dirtiness level: 
						

							39 c. Indoor Fan Control
• During any operation mode combines with Patrol operation, fan speed follows respective operation mode.
• During Patrol individual operation if e-ion starts, only Auto Fan Speed and no Powerful operation is allowed. Even if “Fan
Speed” button is pressed, no signal is sent to air conditioner, and no change on LCD display.
• During Patrol individual operation if e-ion stops, Indoor Fan stop operation.
d. Airflow direction (Horizontal, Vertical) Control
• During any operation mode combines with Patrol operation, air flow direction follows respective operation mode.
• During Patrol individual operation if e-ion starts, only Auto Air Swing is allowed. Even if “Air Swing” button is pressed, no
signal is sent to air conditioner, and no change on LCD display.
• During Patrol individual operation if e-ion stops, Airflow direction louver closed.
e. Indicator
• When Patrol operation starts, Patrol Sensor indicator ON.
• When e-ion operation starts based on dirtiness level, e-ion indicator ON.
f. Remote Control Receiving Sound
g. Timer Control
• When ON timer activates when unit stops, previous operation resumes without Patrol operation.
• When ON timer activates during any operation, no change and carry on current operation.
• When OFF timer activates during any operation, all operation stops.
h. Power failure
• During Patrol individual operation, if power failure occurs, after power resumes, Patrol individual operation resumes
immediately.
• During combination operation, if power failure occurs, after power resumes combination operation resume immediately.
•Normal Operation→Patrol Mode: Beep
•
Patrol Mode→St o p   : Long Beep
•
Patrol Mode→Normal Operation: Beep
•
Stop   →Patrol: Beep 
						

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12.15. e-ion Operation
1. Purpose
This operation provides clean air by producing negative ions to attract dust captured at the positively charged e-ion filters.
2. Control Condition
a. e-ion operation start condition
• During unit running at any operation mode, if “e-ion” button is pressed, combination operation (operation mode + e-ion
operation) starts.
• During unit is OFF, if “e-ion” button is pressed, e-ion individual operation starts.
b. e-ion operation stop condition
• When “OFF/ON” button is pressed to stop the operation.
• When “e-ion” button is pressed again.
• When “Patrol” button is pressed.
• When OFF Timer activates.
c. e-ion operation pause condition
• When indoor fan stop (during deice, odor cut control, thermostat off, etc.). e-ion operation resume after indoor fan
restarts.
• When indoor intake temperature   40°C. e-ion operation resume after indoor intake temperature < 40°C continuously for
30 minutes.