Cooling Operation; Fan Only Operation; Low-Temperature Limit Control - Toshiba RAS-07SKSX-1 Service Manual

7-3-3. Dry operation
([MODE] button on the remote control is set
to the dry operation.)
(1) The compressor, outdoor fan and operation
display on the remote control are controlled
as shown in Fig. 7-3-4.
°C
+3
+2
+1
Preset
0
temp.
Fig. 7-3-4
(2) The microcontroller turns the compressor on and
off at the regular intervals (4 to 6 minutes). While
the compressor is turning off, the indoor fan motor
operates in the SUPER LOW position.
The pattern of operation depending on the relation
between room temperature and preset
temperatures is shown in Fig. 7-3-5.
Room temp.
Preset temp.+1
Preset temp.
ON
Compressor
Outdoor fan
OFF
*
Indoor fan L SL
*
Super Low
Fig. 7-3-5
(3) [FAN] button on the remote control is set to AUTO
only.
(4) The ECO operation cannot be set.
7-3-4. Automatic operation
([MODE] button on the remote control is set
to the automatic operation.)
ON
OFF OFF
ON ON ON
OFF OFF
L SL L SL L
(1) One of 2 operations (Cooling or Fan only)
is selected according to difference between the
preset temperature and the room temperature at
which the automatic operation has started, as
shown in Fig. 7-3-6. The Fan only operation
continues until the room temperature reaches a
level at which another mode is selected.
(2) Temporary Auto
When the [RESET] button on the indoor unit
is pushed, the preset temperature is fixed at 24°C
and the indoor unit is controlled as shown in
Fig. 7-3-6.
°C
0

7-4. Low-Temperature Limit Control

The microcontroller detects the indoor heat exchanger
temperature to prevent the indoor heat exchanger from
freezing.
The compressor and outdoor fan motor are controlled
as shown in Fig. 7-4-1
Heat exchanger
temperature
(°C)
5
2
− 17 −
FILE NO. SVM-08028

Cooling operation

Fan only operation

Fig. 7-3-6
Compressor Outdoor fan
ON
Less than 2°C continues
for 5 minutes
OFF
Fig. 7-4-1