Toshiba RAS-10SKH-ES Service Manual page 39

9-1-3. Misleading but Good Operations
(Program Controlled Operation)
The microcomputer performs the operations listed in
Table 9-1-1 to control the air conditioner. If a claim is
made on the operation, check whether it corresponds
No. Operation of air-conditioner
1 When the power plug or the power cord
of the indoor unit is inser ted, the
OPERATION lamp on the setting
indication part blinks.
2 Fan speed remains unchanged in the dry
mode.
3 Room temperature is in the range under
which the compressor is turned off, but
the compressor will not stop.
4 The compressor will not switch on or off
even when the ther mo. control is
operated in the dry operation.
5 The PRE-DEF. lamp comes on when the
heating operation is started.
6 The outdoor fan stops once in the while
during the heating operation.
7 Compressor does not work though room
temperature is in the range of turning the
compressor on.
8 During automatic operation, the operation
mode changes.
9 During automatic operation mode, the
fan only operation continues.
10 When the power is turned on, the
operation starts automatically.
to the contents in the Table 9-1-1. If it does, it is an
indispensable operation for the control and mainte-
nance of the air conditioner: it is not a failure of the
unit.
Table 9-1-1
The OPERATION lamp blinks, indicating that power is turned on.
If this happens, push the START/STOP button once to cause the
lamp to stop blinking. A power outage also causes the lamp to
blink.
Fan speed is automatically controlled in the dry mode.
The compressor will not stop while the compressor on hold timer
(3-minutes timer) is actuated.
In the dry mode, the compressor goes on and off at regular
intervals, independent of the thermo. control.
The PRE-DEF. lamp comes on during defrost operation and when
the indoor heat exchanger temperature is low when the heating
operation is started. At this time, the indoor fan is stopped to
prevent cold air from drifting into the room.
• When the indoor heat exchanger temperature is high, the
outdoor fan may be stopped by the high-temperature limit control
operation.
• When the compressor current is large, the outdoor fan may be
stopped by the current limit control operation.
Compressor does not work while the compressor restart delay
(3-min.) timer is active. The same is true after power is turned
on, as the time is still active.
After selection of the cooling and heating operation, the operation
mode is selected again when the compressor off mode continues
for 15min. according to the room temperature.
When the room temperature is within setting temperature ± 1°C
the fan only mode is selected.
When the auto restart controlling is selected, the operation is
performed automatically in the previous operation mode after
the power supply has been turned on.
– 39 –
Description