Outdoor Fan Control - Airwell CADE024 Service Manual

11.1.4 Indoor Fan Control
4 Indoor fan speeds are determined for each model.
In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed.
In Auto Fan 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
RAT-SPT
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 high speed.
11.1.5

Outdoor Fan Control

11.1.5.1 OFAN Speed Type
The outdoor fan motor is DC motor with 10 defi ned speeds.
11.1.5.2 General rules
1. The outdoor fan is ON when compressor ON during cooling,dring and heating mode.
2. When the unit is off by remote control, in safety stops and stop after reaching to the temperature
point, the outdoor fan stops;
3. The outdoor fan is ON 30 sec ahead compressor start
4. Outdoor fan OFF will delay 60sec when compressor is OFF during cooling, dring and heating mode.
11.1.5.3 OFAN control in cooling mode:
If HPS2 is cut off (Pressure higher than 3.0Mpa), the OFAN will go to high fan speed. If the HPS2 is
recovery (pressure is 2.4MPa), the OFAN speed will reduce by 1 speed until the pressure is reaching
3.0MPa.
This control is performed every 1 hour or pressure is below 2.4MPa.
11.1.5.4 OFAN control in heating mode:
OFAN will keep high fan speed
11.1.6 Refrigerant control
11.1.6.1 EEV is used for all model
1. EEV operation after power-on: When power on, EEV will open 240steps and then move back
with 540steps. This position will be recognized as 0. Then EEV will open to 480 steps and be
ready for system operating.
2. EEV openloop depends on OAT,RAT,SPT and compressor frequency after compressor starts to
operate.
3. Target CTT control will be performed after compressor operates for 5min.
4. The EEV opening will be updated every 5s.
High
Cooling >=2
Heating <=1
11—CONTROL SYSTEM
Medium Low
(0,2)
(1,3)
SM YUDE 1-A.1 GB | 11—3
<=0
>=3