Mitsubishi Electric MSC-C07TV Service Manual page 37

The system for dry operation uses the same refrigerant circuit as the cooling circuit.
The compressor and the indoor fan are controlled by the room temperature.
By such controls, indoor 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 .
In Auto fan speed becomes Low.
2. The operation of the compressor and indoor / outdoor fan
Compressor operates by room temperature control and time control.
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
OFF
Thermostat
Indoor fan
OFF
Outdoor fan
OFF
Compressor
3. Coil frost prevention
The operation is as same as coil frost prevention during COOL operation.(Refer to 9-1.2. Coil frost prevention)
However when coil frost prevention works while the indoor fan is OFF, it's speed becomes set speed..
9-3. FAN ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.
(2) Select FAN mode with the OPERATION SELECT button.
(3) Select the desired fan speed. When AUTO, it becomes Low.
Only indoor fan operates.
Outdoor unit does not operate.
9-4. HEAT ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.
(2) Select HEAT mode with the OPERATION SELECT button.
(3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button) to select the desired temperature.
The setting range is 16 ~ 31°C.
1. Indoor fan speed control
(1) Indoor fan operates at the set speed by FAN SPEED CONTROL button.
In Auto the fan speed is as follows.
Set temperature minus room temperature: 2 degrees or more················································· High
Set temperature minus room temperature: Between 1 and 2 degrees ····································· Med.
Set temperature minus room temperature: less than 1 degree················································· Low
ON
ON
ON
OFF
ON
ON
OFF
8 min. 3 min.
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MU-C07/C09/C12TV
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MUH-C07/C09/C12TV
Initial temperature difference
OFF
ON
OFF
ON
OFF
4 min.
1 min.
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37
ON
Difference between room
temperature and set tem-
Fan speed perature during operation
1 deg. 1.7 deg.
2 deg. 4 deg.