Functions and control
5 Functions and Control
5.1 Main functions and control specification
5.1.1 Automatic operation
When start and turn to automatic mode, the system will choose running mode according to the current room
temperature.
Tr≥23 ć Choose Cooling Mode
Tr˘23 ć Choose Heating Mode
Tr means room temperature;
Ts means setting temperature;
Tp means temperature of indoor coil pipe.
In automation mode, the running mode can be switched between cooling, fan and heating mode, according
to the change of the indoor temperature. But the conversion between cooling mode and heating mode must
be conducted after 15 minutes.
5.1.2 Cooling operation mode
Temperature control range: 16ć---30ć
Temperature difference: ±1ć
1. Control features:
When Tr
˄input airflow˅>Ts˄set temperature˅, the compressor will start, the indoor fan will running under the
set speed and t
he mode signal will be sent to the outdoor system.
When Tr
˄input airflow˅< Ts˄set temperature˅, the compressor will start, the indoor fan will running under
the set speed and the mode signal will be sent to the outdoor system.
If Tr = Ts, the system will keep the original status.
2. Fan speed control:
(temperature difference 1ć)
Automatic: When Tr≤Ts+3ć, high speed.
When Ts+1ć≤Tr<Ts+3ć, medium speed
When Tr<Ts+1ć, low speed
When the sensor is off, low speed
When the airflow speed has no delay from the high to low switching, the speed should remain at high speed
for 3 minutes before the next switch.
Manus: When the system is operating, you can set the high, medium or low speed manually. (When the
sensor is on or off, the system will change the speed 2 seconds after receiving the signal.)
3. Airgate location control:
The location for the airgate can be set according to your needs.
4. Defrosting
function:
Preventing the frosting on the evaporator (when cooling or dehumidifying). When the temperature of the
indoor coils has been below 0ćfor 10 seconds, the compressor will continuously running no more than 1/6
minutes. When the indoor coil raise to 7ć, the unit will restart, the compressor will restart again (after 3
minutes)
5. Timing system on/off function & Dormant control function.
Domestic air conditioner
16
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