Panasonic CS-HE9NKD / CS-HE12NKD / CU-HE9NKD / CU-HE12NKD Service Manual ▷ View online
37
d. AUTO COMFORT button is pressed.
e. ECONAVI button is pressed.
f. Mild Dry Cooling button is pressed.
e. ECONAVI button is pressed.
f. Mild Dry Cooling button is pressed.
2 When quiet operation is stopped, operation is shifted to normal operation with previous setting.
3 When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4 When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.
5 During quiet operation, if timer “on” activates, quiet operation maintains.
6 After off, when on back, quiet operation is not memorised.
3 When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4 When operation mode is changed, quiet operation is shifted to quiet operation of the new mode.
5 During quiet operation, if timer “on” activates, quiet operation maintains.
6 After off, when on back, quiet operation is not memorised.
C. Control contents
1 Fan speed is changed from normal setting to quiet setting of respective fan speed.
This is to reduce sound of Hi, Me, Lo for 3dB (some models more than 3dB).
2 Fan speed for quiet operation is reduced from setting fan speed.
12.6 Quiet operation (Heating)
A. Purpose
To provide quiet heating operation compare to normal operation.
B. Control condition
a. Quiet operation start condition
o
When “POWERFUL/QUIET” button at remote control is pressed.
POWERFUL/QUIET LED illuminates.
POWERFUL/QUIET LED illuminates.
b. Quiet operation stop condition
1 When one of the following conditions is satisfied, quiet operation stops:
1 When one of the following conditions is satisfied, quiet operation stops:
a. POWERFUL/QUIET button is pressed again.
b. Stop by OFF/ON switch.
c. Timer “off” activates.
d. AUTO COMFORT button is pressed.
e. ECONAVI button is pressed.
f. Mild Dry Cooling button is pressed.
b. Stop by OFF/ON switch.
c. Timer “off” activates.
d. AUTO COMFORT button is pressed.
e. ECONAVI button is pressed.
f. Mild Dry Cooling button is pressed.
2 When quiet operation is stopped, operation is shifted to normal operation with previous setting.
3 When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4 When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan
3 When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed.
4 When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan
only mode.
5 During quiet operation, if timer “on” activates, quiet operation maintains.
6 After off, when on back, quiet operation is not memorised.
6 After off, when on back, quiet operation is not memorised.
C. Control contents
a. Fan Speed manual
1 Fan speed is changed from normal setting to quiet setting of respective fan speed.
This is to reduce sound of Hi, Me, Lo for 3dB.
2 Fan speed for quiet operation is reduced from setting fan speed.
b. Fan Speed manual
1
Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger.
12.7 Powerful Mode Operation
When the powerful mode is selected, the internal setting temperature will shift lower up to 2°C (for Cooling/Soft
Dry) or higher up to 3.5°C (for Heating) than remote control setting temperature for 20 minutes to achieve the
setting temperature quickly.
setting temperature quickly.
12.8 Timer Control
There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time.
If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence.
12.8.1 ON
Timer
Control
ON timer 1 and ON timer 2 can be set using remote control, the unit with timer set will start operate earlier than
the setting time.
This is to provide a comfortable environment when reaching the set ON time.
This is to provide a comfortable environment when reaching the set ON time.
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60 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to
determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting
time.
time.
From the above judgment, the decided operation will start operate earlier than the set time as shown below.
12.8.2 OFF Timer Control
OFF timer 1 and OFF timer 2 can be set using remote control, the unit with timer set will stop operate at set time.
12.9 Auto Restart Control
1 When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within
three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be
selected randomly) after power supply resumes.
selected randomly) after power supply resumes.
2 This type of control is not applicable during ON/OFF Timer setting.
3 This control can be omitted by open the circuit of JP1 at indoor unit printed circuit board.
3 This control can be omitted by open the circuit of JP1 at indoor unit printed circuit board.
12.10 Indication Panel
LED POWER
TIMER
POWERFUL QUIET ECONAVI
AUTO
COMFORT
nanoe-G
Color Green
Orange
Orange
Green Green
Green
Blue
Light ON Operation ON Timer Setting ON
POWERFUL Mode
ON
QUIET Mode
ON
ECONAVI ON
AUTO COMFORT
ON
nanoe-G ON
Light OFF Operation OFF Timer Setting OFF
POWERFUL Mode
OFF
QUIET Mode
OFF
ECONAVI OFF
AUTO COMFORT
OFF
nanoe-G OFF
Note:
If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation
mode judgment, or ON timer sampling.
If Timer LED is blinking, there is an abnormality operation occurs.
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12.11 nanoe-G
Operation
This operation provides clean air by producing great amount of negative ions and distribute through the
discharge airflow to capture or deactivate molds, bacteria or viruses.
nanoe-G operation start condition
o
During unit running at any operation mode, if nanoe-G operation is activated, combination operation
(operation mode + nanoe-G operation) starts.
o
During unit is OFF, if nanoe-G operation is activated, nanoe-G individual operation starts.
nanoe-G operation stop condition
o
When OFF/ON button is pressed to stop the operation.
o
When nanoe-G button is pressed.
o
When OFF Timer activates.
nanoe-G operation pause condition
o
When indoor fan stop (during deice, odor cut control, thermostat off, etc.). nanoe-G operation resume after
indoor fan restarts.
o
When indoor intake temperature ≥ 40°C. nanoe-G operation resume after indoor intake temperature ≤ 40°C
continuously for 30 minutes.
Indoor
fan
control
o
During any operation mode combines with nanoe-G operation, fan speed follows respective operation mode.
However, nanoe-G system enabled when fan speed ≥ 500rpm to ensure proper negative ion distribution,
nanoe-G system disabled when fan speed < 500 rpm.
nanoe-G system disabled when fan speed < 500 rpm.
o
During nanoe-G individual operation, only Auto Fan Speed and no Powerful operation is allowed. Even if Fan
Speed button is pressed, no signal is sent to the unit and no change on remote control display. Auto Fan
Speed for nanoe-G operation changes from SHi to Hi after 4 hours of operation.
Speed for nanoe-G operation changes from SHi to Hi after 4 hours of operation.
Airflow direction control
o
During any operation mode combines with nanoe-G operation, airflow direction follows respective operation
mode.
o
During nanoe-G individual operation, only Auto Air Swing is allowed. Even if Air Swing button is pressed, no
signal is sent to the unit and no change on remote control display.
Timer
control
o
When ON Timer activates when unit stops, previous operation resumes and restored last saved nanoe-G
operation status.
o
When ON Timer activates during any operation, no change on current operation.
o
When OFF Timer activates during any operation, all operation stops and the latest nanoe-G operation status
is saved.
Indicator
o
When nanoe-G starts, nanoe-G indicator ON.
Remote Control Receiving Sound
o
Normal
Operation
Î
nanoe-G Operation
: Beep
o
Nanoe-G
Operation
Î
Normal Operation
: Beep
o
Stop
Î nanoe-G individual Operation : Beep
o
Nanoe-G individual Operation Î Stop
: Long Beep
Power
failure
o
During nanoe-G individual operation, if power failure occurs, after power resumes, nanoe-G individual
operation resumes immediately.
o
During combination operation, if power failure occurs, after power resumes, combination operation resume
immediately.
o
nanoe-G operation status is not memorized after OFF the unit. After OFF the unit, when the operation is ON
again, air conditioner operates without nanoe-G operation.
40
nanoe-G
check
mode
o
To enable nanoe-G check mode, during nanoe-G operation ON:
o
If there is abnormal discharge, nanoe-G indicator blinks immediately.
Error detection control
When nanoe-G indicator blinks, it indicates error listed below:
o
o
nanoe-G connector at main PCB open
Judgment
method
During nanoe-G operation, nanoe-G connector at main PCB is opened.
Troubleshooting
method
Connect the connector or stop operation to cancel the blinking
o
Abnormal discharge error
Judgment
method
During nanoe-G operation, the nanoe-G system has abnormal discharge due to short-circuit caused
by water or dust adhesion and so forth, with Lo-feedback voltage (at microcontroller).
When abnormal discharge occurred, every 30 minutes the unit supplies power to the nanoe-G
system.
When abnormal discharge occurs for 24 times continuously, nanoe-G indicator blinks.
o
Troubleshooting
method
Press nanoe-G button or OFF/ON button to stop the operation and check the nanoe-G connector at PCB.
After that, press nanoe-G button again to confirm the nanoe-G indicator do not blinks.
The 24 timer counter will be clear after 10 minutes of normal operation or when operation stops.
o
Error reset method
Press OFF/ON button to OFF the operation.
Press AUTO OFF/ON button at indoor unit to OFF the operation.
OFF Timer activates
Power supply reset.
o
nanoe-G breakdown error
Judgment
method
Hi-feedback voltage (at microcontroller) supplied to the nanoe-G system when nanoe-G operation is
OFF; nanoe-G breakdown error show immediately.
It is due to indoor PCB or nanoe-G high voltage power supply damage.
Operations except nanoe-G continue. Both Timer indicator and nanoe-G indicator blink.
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