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33 

  When set temperature achieved, the indoor fan speed will be fixed. When thermostat off, the fan stop periodically. 

[Heating] 

  According to indoor pipe temperature, automatic heating fan speed is determined as follows. 

 

 

 

  Immediately after the fan motor started, feedback control is performed once every second. 

  During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error 

counter increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fan 
motor error is detected. Operation stops and cannot on back. 

Outdoor fan motor is operated with one fan speed only. It starts when compressor starts operation and it stops 30 
seconds after compressor stops operation. 
 

 

  There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by 

vertical vanes). 

  Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat 

exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using 
remote control). 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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Operation Mode 

Vane Angle (°) 

1 2 3 4 5 

Cooling 

Auto 

Usual (Ventilation) 

10 ~ 40 

Control with dew 

10 ~ 40 

Manual 

Usual 

(Ventilation) 10 17.5 25 32.5 40 

Control 

with 

dew  10 17.5 25 32.5 40 

Dry 

Auto 

Usual 

10 ~ 40 

Control with dew 

10 ~ 40 

Manual 

Usual 

10 17.5 25 32.5 40 

Control 

with 

dew  10 17.5 25 32.5 40 

Heating 

Manual Usual 

10 

21.2 

32.5 

43.8 

55 

Auto 

A 10 
B 43.8 
C 21.2 

 

1  Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the 

angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat 
exchanger temperature as Figure 1 below. It does not swing during fan motor stop. When the air conditioner 
is stopped using remote control, the vane will shift to close position. 

2  Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above 

and the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, 
the vane will shift to close position. 

 

 

1  The horizontal airflow direction louvers can be adjusted manually by hand. 

  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. 

  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. 

  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. 

  From the above judgment, the decided operation will start operate earlier than the set time as shown below. 

 

 

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OFF timer 1 and OFF timer 2 can be set using remote control, the unit with timer set will stop operate at set time. 

 

 

 

  This operation provides you with a comfortable environment while sleeping. It will automatically adjust the sleep 

pattern temperature during the activation period. 

  The indoor unit indicator will dim when this operation is activated. This is not applicable if the indicator brightness 

has been manually dimmed. 

  This operation is incorporated with the activation timer (0.5, 1, 2, 3, 4, 5, 6, 7, 8 or 9 hours). 

  This operation can be set together with timer. Sleep operation has the priority over OFF timer. 

  This operation can be cancelled by pressing the respective button when the sleep timer reaches 0.0h. 

  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. 

  This type of control is not applicable during ON/OFF Timer setting. 

  This control can be omitted by open the circuit of JP1 at indoor unit printed circuit board. 

 

Color Green Orange 

Light ON 

Operation ON 

Timer Setting ON 

Light OFF 

Operation OFF 

Timer Setting 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. 

To provide quiet cooling operation compare to normal operation. 

 
B. Control condition 

a.  Quiet operation start condition 

o

 

When “POWERFUL/QUIET” button at remote control is pressed twice. 

 

b.  Quiet operation stop condition 
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. 

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 memorized. 

 
C. Control contents 

1  Fan speed is changed from normal setting to quiet setting of respective fan speed. 
2  Fan speed for quiet operation is reduced from setting fan speed. 

 
 

SLEEP

(Cancel)

36 

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. 

 

b.  Quiet operation stop condition 
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. 

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 memorized. 

 

a.  Fan Speed manual 

1  Fan speed is changed from normal setting to quiet setting of respective fan speed. 
2  Fan speed for quiet operation is reduced from setting fan speed. 

b.  Fan Speed Auto 

1 

Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger. 

  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.