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7.Funcitions and Control
7.1 Main functions and control specification
7.1.1 Automatic operation
When the running mode is turned to automation after starting the system, the system will first determine
the running mode according to the current room temperature and then will run according to the determined
mode. Tr in the following selection conditions means room temperature, Ts means setting temperature, Tp
means temperature of indoor coil pipe
Tr≥Ts-3℃
Tr＜Ts-3℃
After turning to the automation mode, the running mode can be switched between cooling mode, fan
mode and heating mode according to the change of the indoor ambient temperature. But the automatic
conversion between cooling mode and heating mode must be conducted after 15 minutes.
7.1.2 Cooling operation mode
Temperature control range: 16 ---30
Temperature difference:
* Control features: When Tr input airflow >Ts set temperature
fan will operate at the set speed and the mode signal will be sent to the outdoor system. When Tr input
airflow
Ts set temperature
and the mode signal will be sent to the outdoor system. The system will keep the original status if Tr= Ts.
Airflow speed control: (temperature difference 1 )
Automatic: When Tr Ts+3 , high speed.
When Ts+1
When Tr<Ts+1 , 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 be delayed for 3
minutes (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.)*Airgate location control: the location for the airgate can be
set according to your needs.*Defrosting function: preventing the frosting on the indoor heat exchanger
(when cooling or dehumidifying). When the compressor works continuously for 6 minutes and the temperature
of the indoor coils has been below one centigrade for 10 seconds, the compressor will be stopped and the
malfunction will be recorded in the malfunction list. The indoor system will continue to run. When the temperature
of the indoor coil is raised to 9℃, the compressor will be restarted again (the requirement of 3 minutes' delay
should be satisfied.)
* timing system on/off function.
* Dormant control function.
7.1.3
Dehumidifying mode.
* temperature control range: 16---30℃
* temperature difference:
Choose Cooling Mode
Choose Heating Mode
1
, the compressor will be opened, the indoor fan will operate at the set speed
Tr<Ts+3 , medium speed
±1℃
, the compressor will be opened, the indoor
13
Functions and Control
Domestic air conditioner
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