Panasonic Cs A9dkh Cu A9dkh Cs A12dkh Cu A12dkh Repair Manual

							(Heating Operation condition)
 • When the piping air temperature reaches 38°C, the
louver is changed from upper to lower limit. When the
piping air temperature falls to 35°C, the louver is
changed from lower to upper limit.
Cooling and Soft Dry Operation
(Cooling and Soft Dry Operation condition)Heating Operation
Heating Operation
8.8.2. 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.
 • During Anti-dew condensation prevention, Airflow Direction Manual control angle change from 10°, 15°, 20°, 26°, 32° to 22°,
24°, 26°, 28°, 30° under Cooling and Soft Dry operation mode.
8.9. Horizontal Airflow Direction Control
 • The horizontal airflow direction louvers can be adjusted manually by hand.
8.10. Powerful Operation
 • The Powerful operation is 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).
 • Vertical Airflow Direction:-
- In “Manual” setting, the vane will automatically shift down 10° lower than previous.
- In “Auto” setting, the vane will automatically swing up and down. However the lower limit will be shifted 10° downward.
(Heating Operation condition)
 • When Powerful operation is set, the setting temperature will be automatically increased 3°C against the present setting
temperature (Higher temperature: 30°C).
 • The Fan Speed will shift as shown below:
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							 • Vertical Airflow Direction:-
 − In “Manual” setting, the vane will automatically shift down 5° lower than previous setting.
 − In “Auto” setting, the vane will automatically shift between upper and lower limit depending on the intake air temperature
as Heating Mode, Airflow Direction Auto-Control. However the upperand lower limit will be shifted 5° downward.
 • Powerful operation stops when:-
 − Powerful operation has operate for 15 minutes.
 − Powerful button is pressed again.
 − Quiet button is pressed.
 − Stopped by OFF/ON operation button.
 − Timer OFF activates.
 − Operating mode is changed.
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							8.11. Quiet Operation
 • The Quiet operation is to provide quiet cooling/heating operation condition compare to normal operation.
(Cooling and Soft Dry Operation condition)
 • Once the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around
2 dB(A) for Lo fan speed or 3 dB(A) for Hi/Me fan speed against the present sound level operation.
 • Dew formation become severe at Quiet Lo cool, therefore Quiet Locool is operated only 1hr 30min (1hr QLo, 30 min QLo
+ 80 rpm). After that, it goes back to QLo+160 (However Quiet LED remains on).
 • Manual Fan Speed:-
 − RPM control during Lo cool
 − RPM control during Hi & Me cool
 • Auto Fan Speed:-
 − Cooling operation
 − Soft Dry operation
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							(Heating Operation condition)
 • When the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around
2 dB (Lo) or 3 dB (Hi, Me), against the present sound level operation.
 • Quiet setting of fan speed rpm refer to Indoor Fan Speed Control.
 • Manual Fan Speed:-
 − Rpm control during Lo, Me & Hi Cool
 • Auto Fan Speed:-
 − Rpm control depends on the piping air temperature sensor of Indoor heat exchanger
 • Quiet operation stops when:-
 − Quiet button is pressed again.
 − Powerful button is pressed.
 − Stopped by OFF/ON operation button.
 − Timer OFF activates.
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							8.12. Ionizer Operation
 • The Ionizer operation is to provide fresh air effect to user by producing minus ion in discharge air.
8.12.1. Operation Control
 1. Ionizer individual operation
 a. When air-conditioner unit is at “OFF” condition (standby) and ION operation button at the remote control is pressed, the
Ionizer and indoor fan operations will turn on. Only ION LED will illuminates. Power LED maintain off. (1→2)
 b. Ionizer individual operation can be turned off by pressing the ION button again. (2→1)
 c. Fan speed can be adjusted later by customer during this operation.
 d. Vertical airflow direction can be adjusted using remote control during Ionizer individual operation.
 e. During Ionizer individual operation, operated mode (Auto, Cool,Dry, Heat) can be activated by turning on the OFF/ON
operation button. (2→4)
 f. If power failure occur during Ionizer individual operation,after power resume, Ionizer operation will be activated immediately.
 g. When the Ionizer circuit feedback process error occur for 24 times (about 11hr 30 min.), Ionizer and Air Circulation
operations will turn off with ION LED blinks continuously.
(For details, please refer to Ionizer Error detection control)
 2. Operation mode & Ionizer operation.
 a. When air-conditioner unit is at “ON” condition and ION operation button at the remote control is pressed, the Ionizer
operation will turn on. ION & Power LED will illuminate. (3→4)
 b. Ionizer operation stops when:
 • ION operation button is press again.
 • Stopped by OFF/ON operation button.
 • Timer OFF activates.
 • Ionizer circuit feedback signal shows error.
 c. Ionizer operation status is not memorized when the air conditioner has been switched off. The air-conditioner will operate
without ionizer operation when it is turned on again. However, if power failure occurs during Ionizer operation together with
Cooling operation, air-conditioner will start to operate at Cooling operation with Ionizer operation when the power is
resumed.
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							8.12.2. Error Detection Control
 • The error detection control is to inform user that erroroccurs at ionizer system and repairing job will be needed.
 • There are two types of error detection control:
a. When Ionizer is ON
 − If ionizer feedback = Lo for 24 times within 11hr 30min, ION LED blinks continuously.
b. When ionizer is OFF
 − If ionizer feedback = Hi,ION LED blinks continuously.
 • During ionizer at breakdown condition, if ionizer feedback voltage = Lo (become normal), ION LED will stop blinking.
 • The error detection control can be reset by:
i) Pressing the OFF/ON operation button to switch the operation OFF.
ii) Pressing the Auto Operation button to force the operation OFF.
iii) Setting the OFF Timer to stop the operation (Not applicable when ionizer is OFF).
8.13. Timer Control
 • There are 2 types of timer, ON and OFF timer.
 • Both ON and OFF timer can be set by pressing ON or OFF button respectively.
 • By pressing ON/OFF operation button, ON Timeror OFF Timer will not be cancelled.
 • To cancel the previous timer setting, press CANCEL button.
 • To activate the previous timer setting, press SET button once again.
 • If main power supply is switched off, the timer setting will be cancelled.
8.13.1. ON Timer
 • When 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 Heating operation, the operation will start 30 minutes before the set time.
 • For Automatic operation, the indoor fan will operate at SLo speed for 25 seconds, 30 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.
8.13.2. OFF Timer
 • When OFF Timer is set by using the remote control, the unit will stop operate according to the desired setting.
8.14. 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.
 • This control can be omitted by open the circuit of JX2. (Refer Circuit Diagram)
8.15. Remote Control Signal Receiving Sound
 • Long beep sound will be heard when:-
 − Stopping the air conditioner using OFF/ON operation button.
 − Stopping the Quiet Mode.
 − Stopping the Powerful Mode.
 − Stopping the Ion Mode.
 • Short beep sound will be heard for others setting.
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							9 Operating Instructions
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