Functions And Control - Haier AS35S2SD1FA-CL Service Manual

7.Functions 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 room temperature and set temperature D-value .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 room temperature >Ts set temperature
indoor fan will be operated at the set speed and the mode signal will be sent to the outdoor system. When Tr
room temperature < Ts set temperature
the set speed 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 ≤Tr<Ts+3 , medium speed
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.
7.1.3 Dehumidification mode.
* temperature control range: 16---30
* temperature difference:
Control feature: send the dehumidifying signal to the outdoor system.
When Tr>Ts+2 , the compressor will be open, the indoor fan will be operated at the set speed.
Choose Cooling Mode
Choose Heating Mode
±1
±1
, the compressor will be closed, the indoor fan will operate at
18
Functions and control
, the compressor will be open, the
Domestic air conditioner