Airwell ELECTRA AWAU-VDDE009-H11, Service Manual

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12-4
SM
JE
DE 1-A.1 GB
CONTROL SYSTEMS
12.1.6.1 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.
12.1.7 Outdoor Fan Control
12.1.7.1 FAN Speed Type
The outdoor fan motor is a one speed AC motor and controlled by the relay on outdoor controller .
12.1.7.2General rules
1. The outdoor fan is ON when compressor ON during cooling, dring and heating mode.
2. Outdoor fan OFF will delay 30sec when compressor is OFF during cooling and heating mode.
3. Outdoor fan control under outdoor deicing please refer to 12.11.6
12.1.8 Refrigerant control
12.1.8.1 EEV was used in model 09 and 12
1. EEV operation after power-on: When power on, EEV will open 240 steps 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 open loop: 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.The EEV opening will
be updated every 5s.
12.1.8.2 Capiliary is used in model 18 and 24
12.1.9 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.
12.2 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
12.3 Cool Mode
For model 09 and 12
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.