11-3
CONTROL SYSTEM
SM HDDHED 1-A.1 GB
11.1.4
Indoor Fan Control
8 Indoor fan speeds are determined for each model. 4 speeds for COOL modes and 4 speeds for
HEAT mode.
Unit Model
Mode
Turbo(Super high)
High
Medium
Low
09
Cooling
1300
1100
900
700
Heating
1300
1140
980
820
12
Cooling
1350
1150
950
750
Heating
1350
1190
1020
850
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In AutoFan user setting, fan speed will be adjusted automatically according to the difference
between actual room temperature(RAT) and user set point temperature(SPT).
Indoor Fan speed
High
Medium
Low
RAT-SPT
Cooling >=2
(0,2)
<=0
Heating
<=1
(1,3)
>=3
In DRY mode, the automatic fan speed is forced to be low.
11.1.4.1 Turbo
Speed
In COOL and HEAT mode (not available in AUTO, DRY, FAN mode), press the Turbo button, the
super high fan speed is selected on Remote control and the indoor fan rotates at super high speed.
11.1.5
Outdoor Fan Control
11.1.5.1
OFAN Speed Type
The outdoor fan motor is a one speed AC motor and controllered by the relay on outdoor controller.
11.1.5.2 General
rules
The
1.
outdoor fan is ON when compressor ON during cooling, dring and heating mode.
Outdoor
2.
fan OFF will delay 30sec when compressor is OFF during cooling and heating mode.
Outdoor
3.
fan control under outdoor deicing please refer to 11.11.5
11.1.6 Refrigerant
control
Capiliary is used in model 09 and 12
11.1.7
Reversing Valve (RV) Control
Reversing valve is on in heat mode.
Switching of RV state is done only after compressor is off for over 2 minutes.
11.2 Fan
Mode
In this mode, the indoor fan may run at high,medium,low and automatic speed. The compressor,
outdoor fan and 4-way valve will be OFF.
In this mode, the range of setting temperature is 16~30
o
C
11.3 Cool
Mode
If RAT
≥
SPT, the unit starts cooling operation. In this case, the compressor and outdoor fan will
operate and the indoor fan will run at the setting speed.
If RAT
≤
SPT-2, the compressor will stop operation and the outdoor fan will delay 30 seconds to
stop. While the indoor fan will run at the setting speed.
If SPT-2
＜
RAT
＜
SPT, the unit will maintain the previous status.
