Mitsubishi Electronics MS-AWA ユーザーズマニュアル

6

Indoor fan operates continuously at the set speed by FAN SPEED CONTROL button 
regardless of the thermostat’s OFF-ON.
In AUTO the fan speed is as follows.

Room temperature minus set temperature : 3.1 degrees or more ·······························High
Room temperature minus set temperature : Between 1.8 and 3.1 degrees ···················Med.
Room temperature minus set temperature : less than 1.8 degrees  ····························Low

3.1deg.

5.4deg.

1.8deg.

Initial temperature difference

Difference between room 
temperature and set temper-
ature during operation (

T)

Fan speed

Temperature of indoor coil thermistor

50°F or more

43°F to 46°F

37°F to 43°F

37°F or less

Operation frequency

Normal (variable)

46°F to 50°F

Raise 6Hz

Fixed

Lower 3Hz

Lower 6Hz

Compressor is turned OFF for 5 minutes when temperature of
indoor coil thermistor continues 37°F or less for 5 minutes or more.

The indoor fan maintains the actual speed of the moment.

Temperature control
When indoor coil thermistor detects following temperature for 90 seconds, operational frequency 
of compressor is controlled according to the following table.

-1.8deg.

-1.3deg.

Thermostat is ON or OFF by difference between room temperature and set temperature

Initial temperature difference                 Thermostat 

Room temperature minus set temperature : -1.8 degrees or more·····································ON
Room temperature minus set temperature : less than -1.8 degrees···································OFF

Set temperature

Difference between room
temperature and set temper-
ature during operation.

If the outside temperature falls to 64°F or less during operation in COOL mode, the unit enters the low outside temperature 
operation mode.

<Operation>
(1) If the unit enters the low outside temperature operation mode, the outside fan rotation speed gets slow down.
(2) Even when the unit is in the "thermostat-off" status under the low outside temperature operation mode, the outside fan 

rotation does not stop.

(3) In this mode to detect the exact outside temperature the compressor turns OFF with the outdoor fan ON for 3 minutes      

once 1 hour; if the outside temperature rises over 64°F, the unit goes back to the normal COOL mode, and if the 
outside temperature is still 64°F or less, the unit stays in the low outside temperature operation mode.

(4) Dew drop prevention

When the ambient temperature thermistor RT65 reads 10°F or less, as coil frost or dew drop from indoor unit may 

occur, the compressor turns OFF with the outdoor fan ON for prevention of them.

W

Other protections work as well as in the normal COOL mode.

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