Samsung AM072BXV Series Service Manual page 272

Piping Diagram
7-3 Functions (cont.)
7-3-2 Control (cont.)
7-3-2-6 Indoor unit control (cont.)
Fan Speed Control
▪ Purpose
Provide automatic and manual fan speed control options, allowing users to obtain the desired fan speed.
▪ Concept
Auto control automatically adjusts the fan speed according to the indoor temperature and set temperature.
Manual control adjusts the fan speed according to the fan speed selected by the remote control.
▪ Control specifications in detail
If automatic fan speed control mode is on in cooling mode, the fan speed changes as shown in the following charts.
In cooling mode
Set Temp.
Indoor Temp.
HIGH
T+2
MIDDLE
T+1
LOW
T
LL
- Manual fan speed control
User control
System control
- Quiet mode : it can reduce the noise from fan motor during cooling or heating mode.
- Fan feedback indoor unit(ex. RAC, 1way, 2way, 4way): Current Fan speed -1 step (1step = about 20 rpm)
- Fan non feedback indoor unit(ex. duct) : H → M, M → L, L → L
Samsung Electronics
HIGH
MIDDLE
LOW
LL
- Ultra Low : minimum step( * non feedback type : 5 step + Low step x 0.25)
- Low Low : Low – 1 step ( * 1step : about 20rpm)
- High High : High + 1 step
- Ultra High : High + 2 step
In heating mode
"Indoor Temp-(Set Temp=f)"
* f (compensation temp. option) : 2/5K
Set
fan speed = LOW
T+3
T+2
MIDDLE
T+1
HIGH
However, it varies with "Cold air prevention"
of Indoor heat exchanger's temperature
conditions.
MIDDLE
HIGH
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