Louver Control; Louver Position; Cold Draft Preventive Control - Toshiba RAS-M10SMUV-E Service Manual

Item

7. Louver control

This function controls the air direction of the indoor unit.
1) Louver
• The position is automatically controlled according to the operation mode (COOL/HEAT).
position
• The set louver position is stored in memory by the microcomputer, and the louver returns to the
stored position when the next operation is performed. (Cooling/heating memory position)
• When the power supply turned on and operation of the air conditioner stopped, the louver is fully
opened once and then becomes full close status.
Suction port
1) Louver position during cooling or drying operation (Except swinging time)
2) Louver position during heating and fan operation
3) During swing operation (All operation modes)
2) Cold draft • To prevent the cold draft during heating operation, fix lower limit angle of the louver to 36° if
preventive temperature of the indoor heat exchanger is low. This control is not operated during cooling, drying
or fan operation.
control
1) At increase of Tc sensor temp.
The lower limit angle of the louver is fixed to 36° until Tc sensor temp exceeds Z°C. In this case,
the louver does not operate even if [FIX] or [SWING] button is pushed. When Tc sensor temp
exceeded Z°C, the louver moves to the HEAT memory position.
2) At decrease of Tc sensor temp.
The louver is at the HEAT memory position until Tc sensor temp exceeds Z–2°C.
Tc sensor temp exceeded Z–2°C, the louver moves to the lower limit angle (36°).
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Operation flow and applicable data, etc.
36˚
Lower limit angle
Upper
92˚
52˚
limit angle Cooling upper limit angle
Lower limit angle (36˚)
Cooling upper limit angle (52˚)
Lower limit angle (36˚)
Upper limit
angle (92˚)
Lower limit angle (36˚)
Upper limit
angle (92˚)
Tc sensor temp.
Z
Z-2
Z˚C : Tsc + 3˚C and the upper limit is 28˚C.
(Ex) : Z = 23˚C when Tsc = 20˚C, Z = 28˚C when Tsc = 27˚C
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Full close (0˚)
Pushing [FIX] button of the remote
controller during cooling or drying
operation moves the louver. The
louver operates in the range
Full close (0˚)
between lower limit angle (36°) and
cooling upper limit angle (52°).
(Except swinging time)
Pushing [FIX] button of the remote
controller during heating or fan
operation moves the louver. The
louver operates in the range
between lower limit angle (36°) and
Full close (0˚)
upper limit angle (92°).
Pushing [SWING] button of the
remote controller during operation
of the air conditioner swings the
louver. The louver swings in the
range between lower limit angle
(36°) and upper limit angle (92°).
(Even during cooling or drying
Full close (0˚)
operation) When pushing [SWING]
button during swinging operation,
swinging operation stops.
B zone
Louver is at heating memory angle
A zone
Louver is fixed to lower limit angle (36˚).
Description
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