Mitsubishi Electric MSZ-G09SV Service Manual page 49

(4) The initial set temperature is decided by the initial room temperature.
Model
COOL mode of
"I FEEL CONTROL"
DRY mode of
"I FEEL CONTROL"
HEAT mode of
"I FEEL CONTROL"
w1 When the system is restarted with the remote controller, the system operates with the previous set temperature regard-
less of the room temperature at restart.
The set temperature is calculated by the previous set temperature.
(5) TEMPERATURE buttons
In "I FEEL CONTROL" (h) mode, set temperature is decided by the microprocessor based on the room temperature.
In addition, set temperature can be controlled by TOO WARM or TOO COOL buttons when you feel too cool or too
warm.
Each time the TOO WARM or TOO COOL button is pressed the indoor unit receives the signal and emit a beep tone.
Fuzzy control
When the TOO COOL or TOO WARM button is pressed, the microprocessor changes the set temperature,
considering the room temperature, the frequency of pressing TOO COOL or TOO WARM button and the user's
preference to heat or cool. So this is called "Fuzzy control", and works only in "I FEEL CONTROL" mode.
In DRY mode of "I FEEL CONTROL", the set temperature doesn't change.
TOO
COOL
... To raise the set temperature 1~2 degrees (°C)
TOO
WARM
... To lower the set temperature 1~2 degrees (°C)
9-14-1. COOL mode of "I FEEL CONTROL"
1. Indoor fan speed control
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 : 1.7 degrees or more ··························High
Room temperature minus set temperature : Between 1 and 1.7 degrees·················Med.
Room temperature minus set temperature : less than 1 degree ·····························Low
2. Coil frost prevention
1 Temperature control
When the indoor coil thermistor RT12 or RT13 reads -1°C or below, the coil frost prevention mode starts immediately.
However the coil frost prevention doesn't work for 5 minutes since the compressor has started.
The indoor fan operates at the set speed and the compressor stops for 5 minutes.
After that, if RT12 or RT13 still reads below -1°C this mode prolonged until the RT12 and RT13 reads over -1°C.
Initial room temperature
26: or more
25: to 26:
23: to 25:
less than 23:
Initial temperature difference
49
Initial set temperature
24:
Initial room temperature minus 2:
Initial room temperature minus 2:
26:
Fan Speed
w1
Difference between room tem-
perature and set temperature
during operation
deg.
3
deg. deg.
1 1.7