Mitsubishi Heavy Industries SRK25ZSP-W, User Manual

EN-12

COOL/HEAT/DRY/FAN mode operation

Airflow direction adjustment procedure. 

 Page 13

4

3

  To stop: 

Press the ON/OFF button.

x

  In case air is not blown out, when starting the heating 

operation. 

x

  The operation mode can also be set or changed when the 

air-conditioner is not in operation.

NOTE

2

1

Air-conditioner operation temperature range

■

  Use within the following operational range. Operating outside of this range may result in the protection devices being activated and 

preventing the unit from working.

Characteristics of HEAT mode operation

Mechanism and capacity of HEAT mode operation

x

  The unit draws heat from the cold outside air, transfers it to indoors and heats the room. As a characteristic of heat pump system, the 

heating capacity reduces when the outside air 

temperature gets colder.

x

  It may take some time to supply hot air after turning on the air-conditioner. 

x

  If the outside temperature becomes extremely low, it would be better to use an additional source of heating.

Defrosting

If the outside temperature becomes low and humidity is high, the heat exchanger in the outdoor unit may frost over, which prevents efficient heating. 

If this happens, the automatic defrost function is activated and the heating operation stops for 5 to 15 minutes during defrosting.

x

  Both indoor and outdoor fans stop and the RUN light blinks slowly (1.5 seconds ON, 0.5 seconds OFF) during defrosting.

x

  The outdoor unit may release some steam during defrosting. This is to help the defrosting 

process and is not a defect.

x

  The HEAT operation resumes as soon as defrosting has been completed.

Press the FAN SPEED button

Set the fan speed as preferred.
A fan speed cannot be set under DRY operation.

 Page 22

COOL

HEAT

DRY

FAN

26 °C - 28 °C

22 °C - 24 °C

24 °C - 26 °C

—

Press the MODE button.

Set to a required mode.

 (COOL), 

 (HEAT),   (DRY),  (FAN)

Press the ON/OFF button.

Press the TEMP button. 

Press 

 or 

 button for the preferred temperature. 

Recommendation

COOL mode operation

HEAT mode operation

Outside temperature

Approximately -15 to 46 °C

Approximately -15 to 24 °C

Inside temperature

Approximately 18 to 32 °C

Approximately 10 to 30 °C

Inside humidity

Below approximately 80 %
The long-term use of the unit with a humidity level 
exceeding 80 % may result in condensation forming 
on the surface of the indoor unit, leading to water 
drops.

RLC012A103_EN.indd   12

9/25/2018   11:57:41 AM