Mitsubishi Electric MCF-13NV-E3 Service Manual page 17

—DRY mode of "I FEEL CONTROL"—
The system for dry operation uses the same refrigerant circuit as the cooling circuit.
The compressor and the indoor fan are controlled by the temperature.
By such controls, indoor air flow amounts will be reduced in order to lower humidity without much room temperature
decrease.
1. Indoor fan speed control
Indoor fan operates at the set speed by FAN SPEED CONTROL button.
However, in AUTO fan operation, fan speed becomes Lo.
2. The operation of the compressor and indoor / outdoor fan
Compressor operates by temperature control and time control.
Set temperature is controlled to fall 2°C from initial room temperature.
Indoor fan and outdoor fan operate in the same cycle as the compressor.
• When the room temperature is 23°C or over:
When the thermostat is ON, the compressor repeats 8 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
• When the room temperature is under 23°C:
When the thermostat is ON, the compressor repeats 2 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
Operation time chart
Example
Thermostat
Indoor fan
Outdoor fan
Compressor
3. Coil frost prevention
• The operation is as same as coil frost prevention during COOL mode of "I FEEL CONTROL".
• Indoor fan operates at the set speed and the compressor stops for 5minutes, because protection (Coil frost
prevention)has the priority. However, when coil frost prevention works while the compressor is not operating, it's speed
becomes Lo.
9-2. COOL ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a
beep tone.
(2) Select COOL mode with the OPERATION SELECT button.
(3) Press the TEMPERATURE buttons.
(TOO WARM or TOO COOL button) to select the desired
temperature.
The setting range is 16 ~ 31°C
Indoor fan continues to operate regardless of thermostat's OFF-
ON at set speed.
Coil frost prevention is as same as COOL mode of "I FEEL
CONTROL".
9-3. DRY ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a
beep tone.
(2) Select DRY mode with the OPERATION SELECT button.
(3) The microprocessor reads the room temperature and determines the
set temperature. Set temperature is as shown on the right chart.
Thermostat (SET TEMP.) does not work.
The other operations are as same as DRY mode of "I FEEL CONTROL".
(4) DRY operation will not function when the room temperature is 13°C or below.
(5) When DRY operation functions, the fan speed is lower than cool operation.
ON
OFF
ON
OFF OFF
ON
OFF
OFF
8 min.
OFF
ON
ON
OFF
ON ON
OFF
4 min.
1 min.
3 min.
:
35
30
25
20
15
10
10
17
ON
Set temperature and
initial room temperature in DRY mode
15 20 25
Initial room temperature
:
30 35