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The unit will operate according to the setting by the remote controller and the operation diagram is shown as
following.

• The indoor fan stops until the evaporator piping temperature will be reached at 28°C.(BY TEMPERATURE)

• The operation diagram is as following.

- 17 -

A

A

B

Intake Air temp.

SETTING TEMP. +3°C
(Compressor OFF)

Setting temp.
(Compressor ON)

Selecting
fan speed

Selecting
fan speed

minimum

10sec.

minimum

10sec.

minimum

10sec.

Hot 

Start

COMPRESSOR

ON

OFF

ON

OFF

• A point; The indoor pipe temperature to be 35°C

The indoor fan operates minimum 10sec. even if falls lower than 35°C

• B point; The indoor pipe temperature to be 35°C

The indoor fan operates minimum 10sec. even if falls lower than 35°C

INDOOR FAN

OFF

LOW

LOW

OFF

LOW

OFF

ON

PIPING
TEMP 28°C

60sec.

INDOOR
FAN

OFF

LOW

SELECTING
FAN SPEED

COMPRESSOR

ON

(HOT-START BY TEMPERATURE)

• Deicing operation is controlled by timer and sensing the indoor pipe temperature.

• Deicing operation checks the indoor pipe temperature and Intake-air temperature at 25 minutes and 60 min-

utes on starting of heating operation, and discriminates by temperature difference.

• When the heating operation passed 25 minutes, the temperature (

∆

T1= TE1-TR1) is checked and memo-

rized with checking the indoor pipe temperature (TE1) and the indoor Intake-air temperature (TR1).

• When the heating operation passed 60 minutes, deicing operation checks the indoor pipe temperature

(TE2) and the indoor Intake-air temperature (TR2), and checks the temperature difference (

∆

T2=TE2-TR2)

and the temperature difference 

∆

Td(=

∆

T1-

∆

T2) of 

∆

T1, 

∆

T2.

If the temperature difference (

∆

Td) become more than the option temperature, deicing operation starts.

• At that time, deicing operation time is decided.

• The deicing operation time stops after deicing operation started.

• If deicing operation start, above heating operation time is reset, so if deicing operation is finished, the heat-

ing operation time is recounted.

• The deicing time and the operation diagram are as following.

- 18 -

TE1

TR1

TE2

TR2

TR1

TE1

T1

T2

T1

INDOOR FAN

ON

OFF

ON After HOT-START finished

OUTDOOR FAN

ON

OFF

ON

COMPRESSOR

ON

ON

ON

4-WAY VALVE

ON

OFF

ON

Deicing

TEMP. °C

25MINS

Heating

25MINS

Heating

60 minutes

Heating

Pipe Temp. 

Intake Air 

Temp.

∆

Td(=

∆

T1-

∆

T2)

Over 3.5°C

3.0~3.5°C

2.5~3.0°C

2.0~2.5°C

below 2.0°C

Deicing Time

12 mins

11 mins

10 mins

9 mins

Heating Operation

• During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 1°C, the com-

pressor OFF temperature is the setting temperature minus 0.5°C.

• When the room temperature rises over the compressor ON temperature, the operation mode is switched to

the cooling mode.

• When the room temperature falls between the compressor ON temperature and OFF temperature, the

operation mode is switched to the Soft Dry Operation.
In this temperature range, 10min. Dry Operation, 5.5min operation OFF, 1.5min. only fan operation repeat.
During 10min Dry operation, even if the room temperature falls below compressor OFF temperature,
10min(MAX) Compressor ON from starting of Dry operation which includes 4 min. Compressor ON opera-
tion below the comperssor OFF temperature.

• In micom dehumidify mode, control of fan speed is as following.

• If you lose wireless remote controller, you can operate the unit with forced operation switch.

• The standard conditions are as following.

- 19 -

Heat pump Model

Room Temp 

≥

24°C

21°C 

≤

Room Temp < 24°C

Room temp < 21°C

Cooling

Soft Dry 

Heating

High

Low

High

24°C

Room Temp.

22°C

Cooling Model

Operation Mode

Cooling

FAN Speed

High

Setting Temp.

24°C

ROOM TEMP.

SETTING TEMP. +1°C
(COMP. ON)

SETTING TEMP. 
(COMP. OFF)

Selecting
fan speed

Operation

Cooling

Dry operation

maximum

4 minutes

maximum

10 minutes

5.5 minutes

1.5 minutes

10 minutes

1 minute

2 minutes

COMPRESSOR

ON

OFF

ON

OFF

ON

INDOOR FAN

OFF

LOW

LOW

OFF

LOW

LOW

• Cooling, Soft Dry, Heating

• Timer Mode

• Sleep Mode

• Hot-start, Deice

Note: For normal operation after checking by test mode, you should press SW1 nine times for resetting or

reconnect the power cord.

If the temperature of the indoor pipe is below 0°C after 7 mins from starting the compressor, the compressor
and the outdoor fan is stopped, and then after 3 mins delay of the compressor and the temperature of the
indoor pipe is over 7°C, the compressor and the outdoor fan is reoperated.

Cut Off/Short : Blinks on and off the operation mode LED. (0.5 sec ON/3 sec OFF).

- 20 -

: Heating Model only