2. INDOOR UNIT CONTROL

2-1 COOL operation

 

 

SWING

 

TIMER OFF TIMER￿

CLOCK AUTO AUTO￿

FAN￿

 

CHECK SET TEMP.

START STOP

FILTER

SPEED

 

 

AUTO￿

CHECK MODE

 

 

RETURN

TEST RUN

<How to operate>

1Press POWER ON/OFF button.

2Press the MODE button to display COOL.

3Press the SET TEMP. button to set the desired temperature. NOTE: Set temperature changes 2°F when the SET TEMP. button

is pressed one time. Cooling 65 to 87°F.

<COOL operation time chart>

 

 

 

Operation starts by

 

Room temperature￿

 

Room temperature

 

 

Operation stops by￿

 

 

 

P O W E R b u t t o n￿

 

becomes equal to￿

 

rises

above set￿

 

 

P O W E R b u t t o n￿

 

 

 

ON.

 

set temperature.

 

temperature.

 

 

OFF.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermostat

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW or HIGH

 

 

 

 

LOW or HIGH

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

Indoor fan

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Auto vane

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 minutes

Drain pump

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Minimum 3 minutes

w1

 

 

 

 

 

 

w1 Even if the room temperature rise above the set temperature during this period, the compressor will not start until this period has ended.

(1)Compressor control

1 3-minute time delay

To prevent overload, the compressor will not start within 3 minutes after stop.

2 The compressor runs when room temperature is higher than set temperature.

The compressor stops when room temperature is equal to or lower than the set temperature.

The compressor maintains the previous state when the room temperature minus the set temperature is 0 degrees or more, or lower than 2 degrees.

3 The compressor stops in check mode or during protective functions.

4 Coil frost prevention

To prevent indoor coil frost, the compressor will stop when the indoor coil thermistor (RT2) reads 34°F or below after the compressor has been continuously operated for at least 16 minutes or more. When the indoor coil temperature rises to 50°F or above, the compressor will start in a 3-minute(w2) time delay.

w2 When the indoor coil temperature is 30°F or less, the compressor starts in 6 minutes.

NOTE : By turning OFF the dip switch SW1-3 on indoor controller board, the start temperature of coil frost prevention changes from 34°F to 36°F.

OC194-26

Page 26
Image 26
Mitsubishi Electronics PL30FK21, PL42FK21, PL36FK31 OC194-26, Indoor Unit Control, How to operate, Compressor control

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