Panasonic S-E7JKDW / U-E7JKD / S-E9JKDW / U-E9JKD / S-E12JKDW / U-E12JKD / S-E15JKDW / U-E15JKD / S-XE9JKDW / U-XE9JKD / S-XE12JKDW / U-XE12JKD Service Manual ▷ View online
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Auto Fan Speed for e-ion operation switches between HLo and CLo at pattern below:
b. Airflow direction control
• During any operation mode combines with e-ion operation, airflow direction follows respective operation mode.
• During e-ion individual operation, only Auto Air Swing is allowed. Even if Air Swing button is pressed, no signal is sent to air
• During e-ion individual operation, 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.
c. Timer control
• When ON timer activates when unit stops, previous operation resumes and restores last saved e-ion operation status.
• When ON timer activates during any operation, no change and carry on current operation.
• When OFF timer activates during any operation, all operation stops and the latest e-ion operation status is saved.
• When ON timer activates during any operation, no change and carry on current operation.
• When OFF timer activates during any operation, all operation stops and the latest e-ion operation status is saved.
d. Indicator
• When e-ion operation starts, e-ion indicator ON.
e. e-ion Check Mode
• To check if e-ion is malfunctioning, press “e-ion” button and follow by “check” button to enter e-ion check mode and supplies
power to the e-ion Air Purifying System.
• If abnormal discharge is detected at filter (short-circuited) due to water or dust adhesion, etc., the e-ion indicator blinks
immediately.
f. Power failure
• During e-ion individual operation, if power failure occurs, after power resumes, e-ion individual operation resumes
immediately.
• During combination operation, if power failure occurs, after power resumes, combination operation resume immediately.
g. Error Detection Control
When e-ion indicator blink, it indicates error listed below:
i. e-ion Air Purifying system main connector to PCB is open:
i. e-ion Air Purifying system main connector to PCB is open:
Judgement Method
• During e-ion operation (include during Patrol operation), e-ion Air Purifying system main connector to PCB is opened.
Troubleshooting Methods
• Connect the connector or stop operation (include during Patrol operation) to cancel the blinking.
ii. Abnormal Discharge
Judgement Method
• During e-ion operation, when feedback voltage is -Lo (at microcontroller) is detected, it is judged abnormal discharge and
stops power supplies to the e-ion Air Purifying system.
• The unit retries after 30 minutes and repeat for 24 times. (not applicable for e-ion Check Mode)
Troubleshooting Method
• Press “e-ion” button or “OFF/ON” button to stop the operation and check the e-ion Air Purifying system main connector to
PCB.
• After that, press “e-ion” button again to confirm the e-ion indicator not blinking.
• The 24 times counter will be clear after 10 minutes of normal operation or when operation stops.
• The 24 times counter will be clear after 10 minutes of normal operation or when operation stops.
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.
• Press “e-ion” button during e-ion individual mode.
• Power supply reset.
• Press AUTO OFF/ON button at indoor unit to OFF the operation.
• OFF Timer activates.
• Press “e-ion” button during e-ion individual mode.
• Power supply reset.
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iii. e-ion breakdown
Judgement Method
• When hi-feedback voltage (at microcontroller) supplied to filter during e-ion stop, due to PCB or filter’s high voltage power
supply damage.
• Operations except e-ion continue. Both Timer indicator and e-ion indicator blink.
Troubleshooting Method
• Press “e-ion” button or “OFF/ON” button to stop the operation.
• Change main circuit board or filter’s high voltage power supply.
• When lo-feedback voltage supplied to e-ion Air Purifying system during e-ion operation, e-ion indicator and Timer indicator
• Change main circuit board or filter’s high voltage power supply.
• When lo-feedback voltage supplied to e-ion Air Purifying system during e-ion operation, e-ion indicator and Timer indicator
stop blinking.
12.13. Mild Dry Cooling Operation
• This operation helps to prevent decreases in room humidity while maintaining the setting temperature.
• During unit running at Cooling operation mode, if “Mild Dry Cooling” button is pressed, Mild Dry Cooling operation starts and Mild
• During unit running at Cooling operation mode, if “Mild Dry Cooling” button is pressed, Mild Dry Cooling operation starts and Mild
Dry Cooling indicators turns ON.
• Mild dry cooling operation is unavailable when the unit is operating Auto mode, Soft Dry mode, Patrol individual operation or
e-ion individual operation.
• Mild dry cooling operation is cancelled when the unit turned OFF, or when the operation mode changed from Cooling to other
mode.
• Powerful, Quiet and Mild Dry Cooling mode cannot function at the same time, the unit will follows the operation according to the
last signal received.
• During this operation, the compressor frequency changes according to operating condition to prevent room humidity decreases
and when AUTO AIR SWING is set, the vertical airflow direction fixed at lower limit position.
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13 Operation Control (For Multi Split Connection)
During multi split connection, indoor unit’s operation controls are same with single split connection unless specified in this chapter.
13.1. Cooling operation
13.1.1.
Thermostat control
• Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature — Internal setting temperature
< -2.0
° C
• Capability resume supply to indoor unit after waiting for 3 minutes, if the Intake Air temperature — Internal setting temperature
> Capability supply OFF point.
13.2. Soft Dry Operation
13.2.1.
Thermostat control
• Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature — Internal setting temperature
< -3.0
° C
• Capability resume to indoor unit after waiting for 3 minutes, if the Intake Air temperature — Internal setting temperature
> Capability supply OFF point.
13.3. Heating Operation
13.3.1.
Thermostat control
• Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature — Internal setting temperature
> +1.0
° C
• During this condition, the indoor fan is stopped if compressor is ON.
• Capability resume supply to indoor unit after waiting for 3 minutes, if the Intake Air Temperature — Internal setting temperature
• Capability resume supply to indoor unit after waiting for 3 minutes, if the Intake Air Temperature — Internal setting temperature
< Capability supply OFF point.
13.3.2.
Temperature Sampling Control
• Temperature sampling is controlled by outdoor unit where room temperature for all power supply ON indoor unit could be
obtained.
• When capability supply to the indoor unit is OFF and the compressor is ON, the indoor fan motor is stopped. During this
condition, 15 seconds after sampling signal from outdoor unit is received, the indoor fan start operation at low fan speed.
• However, within first 4 minutes of capability stopped supply to the indoor unit, even sampling signal is received, the sampling
control is cancelled.
13.4. Automatic Operation
• This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control
operation mode, indoor intake and outdoor air temperature.
• During operation mode judgment, indoor fan motor (with speed of -Lo) and outdoor fan motor are running for 30 seconds to
detect the indoor intake and outdoor air temperature. The operation mode is decided based on below chart.
• Every 180 minutes, the indoor and outdoor temperature is judge. Based on remote control setting temperature, the value of T1
will increase up to 10
° C, T2 will decrease by 3° C and T3 will decrease up to 8° C.
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13.5. Indoor Fan Motor Operation
13.5.1.
Residual Heat Removal Control
• To prevent high pressure at indoor unit, when heating mode thermostat-off condition or power supply OFF, indoor fan continue to
operate at controlled fan speed for maximum 30 seconds then stop.
13.6. Powerful Mode Operation
• When the power mode is selected, the internal setting temperature will shift lower up to 4
° C for Cooling/Soft Dry or higher up to
6
° C for heating than remote control setting temperature, the powerful operation continue until user cancel the Powerful operation
by pressing powerful button again.
13.7. Auto restart control
• When the power supply is cut off during the operation of air conditioner, the compressor will re-operate between three to four
minutes (10 patterns to be selected randomly) after power resume.
• During multi split connection, Indoor unit will resume previous mode, include unit standby mode.
13.8. Indication Panel
Note:
• If POWER LED is blinking (0.5 seconds ON, 0.5 second OFF), the possible operation of the unit are during Indoor Residual Heat
Removal, Hot Start, during Deice operation, operation mode judgment, or ON timer sampling.
• If POWER LED is blinking (2.5 seconds ON, 0.5 second OFF), the unit is in standby mode.
• If TIMER LED is blinking, there is an abnormality operation occurs.
• If e-ion LED is blinking, there is an abnormality of e-ion occurs.
• If PATROL LED is blinking, there is a gas sensor error detection.
• If TIMER LED is blinking, there is an abnormality operation occurs.
• If e-ion LED is blinking, there is an abnormality of e-ion occurs.
• If PATROL LED is blinking, there is a gas sensor error detection.
13.9. Mild Dry Cooling Operation
• During multi split connection, Mild Dry Cooling Operation is disabled.
LED
POWER
TIMER
QUIET
POWERFUL
e-ion
Mild Dry Cooling
PATROL SENSOR
Color
Green
Orange
Orange
Orange
Blue
Not Applicable
Blue
Orange
Red
Light ON
Operation ON
Timer Setting
ON
ON
Quiet Mode
ON
ON
Powerful Mode
ON
ON
e-ion ON
Not Applicable
Air
clean
clean
Moderate
Dirty
Light OFF
Operation OFF
Timer Setting
OFF
OFF
Quiet Mode
OFF
OFF
Powerful Mode
OFF
OFF
e-ion OFF
Not Applicable
PATROL OFF
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