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• Indicator

- When e-ion operation starts, e-ion indicator ON.

• Remote Control Receiving Sound

- Normal Operation

o e-ion Operation

: Beep

- e-ion Operation

o Normal Operation

: Beep

- Stop

o e-ion individual Operation

: Beep

- e-ion individual Operation

o Stop

: Long Beep

• 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.
- e-ion operation status is not memorized after OFF the unit. After OFF, when the operation is ON again, air conditioner

operates without e-ion operation.

• e-ion Check Mode

- To check if e-ion is malfunctioning, during e-ion operation press e-ion button for 15 seconds and release to enter e-ion Check

Mode and supplies power to the Active 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.

• Error Detection Control

When e-ion indicator blink, it indicates error listed below:

- Active e-ion Air Purifying system PCB main connector open:

• Judgment Method

- During e-ion operation (include during Patrol operation), active 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.

- Abnormal Discharge error:

• Judgment Method

- During e-ion operation, feedback voltage is-Lo (at microcontroller) is detected, it is judged abnormal discharge and

stops power supplies to the active e-ion Air Purifying system.

- Abnormal discharge is caused by ionizer or filter’s high voltage power supply short-circuits due to water or dust

adhesion, and so forth.

- When abnormal discharge occurred, every 30 minutes the unit supplies power to the active e-ion Air Purifying system.
- When abnormal discharge occurs for 24 times continuously, e-ion indicator blinks (not applicable for e-ion Check Mode,

where the error will shows immediately despite the 24 times counter)

• Troubleshooting Method

- Press “e-ion” button or “OFF/ON” button to stop the operation and check the active 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.

• 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

- Active e-ion Air Purifying system breakdown error:

• Judgment Method

- When hi-feedback voltage (at microcontroller) supplied to filter during e-ion stop, active e-ion Air Purifying system

breakdown error shows immediately.

- It is due to indoor 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 active e-ion Air Purifying system during e-ion operation, e-ion indicator and Timer

indicator stop blinking.

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• When the thermo-off temperature (temperature which compressor stops to operate) is reached during:-

- Cooling operation - the compressor stops for 3 minutes (minimum) before resume operation.
- Soft Dry operation - the compressor stops for 6 minutes (minimum) before resume operation.

• If the operation is stopped by the remote control, the compressor will not turn on within 3 minutes from the moment operation

stop, although the unit is turn on again within the period.

• This phenomenon is to balance the pressure inside the refrigerant cycle.

• The compressor will start automatically if it has stopped for 7 minutes and the intake air temperature falls between the

compressor ON temperature and compressor OFF temperature during the period.

• This phenomenon is to reduce the built up humidity inside a room.

• Once the air conditioner is turned on, the compressor will not stop within 60 seconds in a normal operation although the intake air

temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON operation button at the
remote control is permitted.

• The reason for the compressor to force operate at minimum 60 seconds is to allow the refrigerant oil run in a full cycle and return

back to the outdoor unit.

• When the compressor, outdoor fan motor and indoor fan motor are simultaneously started, the indoor fan motor will start to

operate at 1.6 second later.

• The reason of the difference is to reduce the starting current flow.

• If the temperature of the indoor heat exchanger falls below 2

qC continuously for 4 minutes or more, the compressor turns off.

The fan speed setting remains the same.

• This phenomenon is to protect the indoor heat exchanger from freezing and to prevent higher volume of refrigerant in liquid form

returning to the compressor.

• Compressor will restart again when the indoor heat exchanger temperature rises to 10

qC (Recovery).

• Restart control (Time Delay Safety Control) will be applied in this Control if the recovery time is too short.

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• If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and indoor

heat exchanger is 2.5

qC or less for continuous 2 minutes, compressor will stop and restart automatically.

• Time Delay Safety Control is activated before the compressor restart.

s T = Intake air temperature - Indoor heat exchanger temperature

• This is to prevent compressor from rotate reversely when there is an instantaneous power failure.

• To prevent dew formation at indoor unit discharge area.
• This control starts if:

- Cooling mode or Quiet mode is activated.
- Remote Control setting temperature is less than 25

qC.

- Fan speed is at Lo or QLo.
- Room temperature is constant (±1

qC) for 30 minutes.

- Compressor is continuously running.

• Fan speed, angle of horizontal louver (vertical airflow angle) and angle of vertical louver (horizontal airflow angle) will be adjusted

accordingly in this control.

- Fan speed will be increased slowly if the unit is in quiet mode and Lo fan speed.
- The angle of horizontal louver will be changed as table below:
- The angle of vertical louver will be changed as table below:

• Dew prevention stop condition

- Remote control setting temperature is more than 25

qC.

- Fan speed is not set to Lo or QLo.
- Select Powerful operation.

• When the thermo-off temperature (temperature which compressor stops to operate) is reached during:-

- Heating operation - the compressor stops for 3 minutes (minimum) before resume operation.

• If the operation is stopped by the remote control, the compressor will not turn on within 3 minutes from the moment operation

stop, although the unit is turn on again within the period.

• This phenomenon is to balance the pressure inside the refrigerant cycle.

• If the compressor is operating continuously for 5 minutes or longer and the temperature difference between indoor heat

exchanger and intake air is 5°C or less for continuous 2 minutes, compressor will stop and restart automatically.

• Time Delay Safety Control is activated before the compressor restart.

s T = Indoor heat exchanger temperature - Intake air temperature

• This is to prevent compressor from rotate reversely when there is an instantaneous power failure.

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• Outdoor Fan Control

- If the temperature of the Outdoor Heat Exchanger less than -3°C, Outdoor Fan is ON. The Outdoor Fan stop, when Outdoor

Heat Exchanger temperature is Tb or more according to Outdoor Air Temperature region as table below:
The Outdoor Fan restarts when the indoor heat exchanger temperature falls to 49°C.

During starting of Heating mode and after deice, Outdoor Fan ON for 90 sec. (Hi).

• Compressor High Pressure Control

- If the indoor heat exchanger becomes 68°C or more, the compressor will stop and restart automatically.
- Time Delay Safety Control is activated before the compressor restart.

• 4-way valve always on during Heating operation. (except deicing operation)
• When the unit is switched off by remote control during Heating operation, the 4-way valve stay at Heating position for 5 minutes.
• This is to prevent the refrigerant flow process sound for being occur.

• Hot Start Control is to prevent cool air discharge into the room when heating operation start.
• When Heating operation starts, Indoor fan will not start until the indoor heat exchanger reaches 30°C as diagram shown.

• Hot start is completed when indoor heat exchanger rises to 42°C or operation over 4 minutes.