Mitsubishi Heavy Industries SRC20MA-S Technical Manual Download

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4.6 SLEEP operation:

(1) SLEEP operation: This function prevents the temperature in the cooling operation from

becoming too low and the temperature in the heating operation from
becoming too high; regulates the room temperature automatically as
time goes by; and stops automatically after the time set.

(2) Operation method:

①

If the SLEEP button is pressed during the operation of the air

conditioner,

and the run time, such as

, will appear.

There are 11 options, including 1-10 hours (interval of 10 hours)
and OFF.

②

If the SLEEP button is pressed when the air conditioner is in the

stop mode, the air conditioner will execute the previous
operation settings and stop after the time set.

(3) Making correction based on the set temperature and regulating the

room temperature automatically:

①

During cooling operation:

Beginning (-1

℃

), 1 hour later (±0

℃

), 2 hours later (+1

℃

);

②

During heating operation:

Beginning (-1

℃

), 30 minutes later (-2

℃

), 1 hour later (-1

℃

), 2 hours later (-6

℃

); 4 hours

later (-3

℃

)

(4) The set time of SLEEP operation can be changed with the SLEEP button at any time. Since

the remote controller receives the change signal, the air conditioner continues to run
according to the changed set time.

(5) When the operation switch change signal is received during the SLEEP operation, the air

conditioner will control the sleep setting according to the operation switching and the
temperature correction value in the elapsed time will be retained.

(6) When the set temperature change signal is received during the SLEEP operation, the

temperature correction value will be recalculated.

(7) When the air conditioner is set to automatic control (fuzzy automatic) and the indoor

operating mode (cool room · drying · warm room) is set, the SLEEP operation begins. The

change of cool room · drying · warm room state arising from the automatic control (fuzzy
automatic) is made only when the set temperature is changed. (In other words, the operating
mode judgment according to the operation judgment timing is not executed.)

(8) Priority of sleep timing operation

①

Set temperature correction: HI POWER operation > Setting correction temperature

②

Timing: Sleep timing run > HI POWER run

4.7 Timing OFF:

(1) Timing OFF: The timing OFF operation begins when the Timing OFF

signal is received from the remote controller and stops after the set time.

(2) Operation method:

①

When the air conditioner is in the stop mode, press the ON/OFF

button;

②

When the air conditioner is running, press the TIMER OFF button

and the Timing OFF indicator will flash;

③

Press the

button to set the OFF time (unit: 10

minutes);

④

Within 60 seconds, press the TIMER OFF button and the indicator

will change from flashing to a fixed state. The setting is finished;

⑤

The TIMER lamp (yellow) of the indoor unit lights up.

(3) Use the TIMER OFF button to set a new Timing OFF time at any time.
(4) During the Timing OFF operation, all setting change signals from the remote controller are

accepted.

(5) During the Timing OFF operation, when the Timing ON signal is received, the operation will

become the programmed timing operation and the remaining Timing OFF time will be
retained.

(6) During the Timing OFF operation, when the Sleep signal is received, the Timing OFF

operation will be canceled (and the remaining time will be canceled too) and the operation
will be switched to the SLEEP operation. (In other words, the SLEEP operation can’t be used
with the Timing OFF function.)

(7) To cancel the Timing OFF function, press the Cancel button and the TIMER lamp will go

off.

Sleep
timing

Timing
OFF