Mitsubishi Electronics PCA-A.KA User Manual

5. Operation

5.2. Mode select

Press the operation mode (

) button 2 and select the opera-

tion mode

(COOL) Cooling mode

(DRY) Drying mode

(FAN) Fan mode

(HEAT) Heating mode

(AUTO) Automatic (cooling/heating) mode

Ventillation mode

Only indicated on the following condition
Wired remote controller used
LOSSNAY

connected

Automatic operation

According to a set temperature, cooling operation starts if the room

temperature is too hot and heating operation starts if the room tem-
perature is too cold.

During automatic operation, if the room temperature changes and

remains 2 °C, 4 °F or more above the set temperature for 15 minutes,
the air conditioner switches to cooling mode. In the same way, if the
room temperature remains 2 °C, 4 °F or more below the set tempera-
ture for 15 minutes, the air conditioner switches to heating mode.

Cooling mode

15 minutes (switches
from heating to cooling)

Set temperature +2°C, +4°F

Set temperature

Set temperature -2°C, -4°F

15 minutes (switches
from cooling to heating )

Because the room temperature is automatically adjusted in order to

maintain a fi xed effective temperature, cooling operation is performed
a few degrees warmer and heating operation is performed a few de-
grees cooler than the set room temperature once the temperature is
reached (automatic energy-saving operation).

5.3. Temperature setting

To decrease the room temperature:

Press button 3 to set the desired temperature.

The selected temperature is displayed

To increase the room temperature:

Press

button

to set the desired temperature.

The selected temperature is displayed

• Available temperature ranges are as follows:
Cooling/Drying:

19 - 30 °C, 67 - 87 °F

Heating:

17 - 28 °C, 63 - 83 °F

Automatic:

19 - 28 °C, 67 - 83 °F

• The display 4 fl ashes either 8 °C - 39 °C, 46 °F - 102 °F to inform you

if the room temperature is lower or higher than the displayed tempera-
ture. (This display does not appear on the wireless remote controller.)

5.4. Fan speed setting

Press the Fan Speed button 5 as many times as necessary while the

system is running.
• Each press changes the force. The currently selected speed is

shown at 5.

• The change sequence, and the available settings, are as follows.

FAN SPEED

Display

4-speed

Auto

3-speed

Auto

Note:

The number of available fan speeds depends on the type of unit

connected. Note also that some units do not provide an “Auto”
setting.

In the following cases, the actual fan speed generated by the unit

will differ from the speed shown the remote controller display.
1. While the display is showing “STAND BY” or “DEFROST”.
2. When the temperature of the heat exchanger is low in the heat-

ing mode. (e.g. immediately after heating operation starts)

3. In HEAT mode, when room temperature is higher than the tem-

perature setting.

4. When the unit is in DRY mode.

1. While the display is showing “STAND BY” or “DEFROST”.

2. Immediately after starting heater mode (while the system is

waiting for the mode change to take effect).

3. In heat mode, when room temperature is higher than the tempera-

ture setting.

Speed 1

Speed 2

Speed 3

Speed 4

Auto

Speed 1

Speed 2

Speed 3 Auto

Remote controller

Display

Wired type

(PCA-KA)
(PKA-HA)

Wireless type

Swing

Auto

Swing

*Note that during swing operation, the directional indication on the

screen dose not change in sync with the directional vanes on the unit.

Note:

Available directions depend on the type of unit connected. Note

also that some units do not provide an “Auto” setting.

In the following cases, the actual air direction will differ from the

direction indicated on the remote controller display.

5.5. Airfl ow direction setting

<To Change the Airfl ow’s Up/Down Direction>

With the unit running, press the Airfl ow Up/Down button

as necessary.

• Each press changes the direction. The current direction is shown at

• The change sequence, and the available settings, are as follows.

BG79U794H04_EN.indd 6

2009/02/10 9:41:59