4
2. Control Specifications
2.1 General introduction
The indoor fan motor uses PG
；
The compressor is 4 poles brushless motor which rotary
speed can be adjusted within 25-100rps.The outdoor controller has IPM transducer which
can control the compressor and PFC control circuit
，
and the power factor of complete unit
reaches up to more than 95%.
The aim of controlling
：
Temperature difference between indoor temperature and set
temperature. This unit has the following control:
2.1.1 Indoor fan motor controls
（
PG motor
）
Fan speed
：
High,medium,low,gentle.
2.1.2 Outdoor fan motor (AC machine)
Fan speed
：
High,low.
2.1.3 Capacity control
Change the capacity of cooling and heating through changing the rotate speed of
compressor. The transducer can convert the voltage AC220V into volts d.c. and control the
power supply condition of compressor by IPM module.
2.1.4 Over current protection
Outdoor controller examines input current and the compressor begins to run after accepting
the order from indoor unit. When the current value exceeds the prescribed value, the
outdoor controller will decrease the rotate speed of compressor, in that case, compressor
can run at the speed by the order from indoor unit within the range of the current value does
not exceed the prescribed value.
2.1.5 High-loaded prevention
（
freeze-prevention
）
Indoor heat exchanger examines the condensation temperature of refrigerant when the unit
is in heating operation.
（
evaporate temperature of refrigerant when cooling and heating
）
.If
the temperature exceeds the prescribed value,(or lower than the prescribed value
），
then
decrease the rotary speed of compressor to make compressor runs at the speed within the
prescribed temperature range in order to keep high pressure from excessive rising.
（
Or
keeping indoor heat exchanger from freezing.
）
2.1.6 Blades control
Users can realize tridimensional airflow through controlling vertical blades.
Control the position of blades automatically according to operating condition. Press“vertical
airflow ”button to set the position of vertical blades freely. Electric control will store the
position of blades when the current is switched on.
2.1.7 Power-failure automatic reset
2.2 Panel display
2.2.1. See Q model for the details of panel display.
