Functions And Control - Haier HSU-12HEB03 - annexe 1 Manual

5 Functions and control

5.1 main functions and control specifications
Including brief introduction to air conditioners of series models and electric control function.
5.1.1 Automatic running
(1)
Single cold automatic run mode:
After entering into this mode, the main control "MCU" determines the corresponding work pattern according
to the indoor temperature so as to maintain the preset temperature (the preset temperature is 26 ). When the
indoor temperature is below 26 , outlet air from compressor is off, the automatic wind from fan motor is low,
and wind can be set to high, medium or low by hand. When the indoor temperature is or above 26 , the unit
enters the cooling mode and conducts the cooling programme (the preset temperature is 26 ), outlet air from
compressor is on and indoor fan motor run in fixed wind speed.
5.1.2 Indoor temperature control
Temperature control range : 16 —30
Temperature control precision: 1
Compressor can't be controlled by temperature sensor within 2 minutes after it starts
Cooling mode:
When Tr> Ts, outdoor fan motor and compressor on, and indoor fan motor run at fixed wind speed. When Tr
Ts, outdoor fan motor and compressor off, and when Tr > Ts, outdoor fan motor and compressor are working
again .If Tr=Ts, the indoor fan motor , outdoor fan motor and the compressor's state will not change.
Heating mode:
When Tr Ts, compressor, four-ways valve and outdoor fan motor is on, indoor fan
motor runs as in cold blast avoidance mode, and 4 of compensation is added after compressor is started.
When Tr>Ts+5 , compressor is off, and the indoor fan motor runs as in cold blast avoidance mode.
When Tr<Ts+5 , compressor, four-ways valve and outdoor fan motor is on, and the indoor fan motor runs
as in the mode of avoiding cold blast.
5.1.3 Cooling run mode:
temperature control range :16
temperature control precision: 1
compressor can't be controlled by temperature sensor within 2 minutes after it starts.
control character: when Tr
speed. When Tr Ts, outlet air from compressor is off , and when Tr > Ts, outlet air from compressor is on.
wind speed control: (the temperature difference is 1 )
auto: when Tr>=Ts+3 , the wind speed is high;
When Ts+1
When Tr Ts+1 , the wind speed is low.
When temperature sensor is off, the fan motor runs at low speed.
when the wind speed changes from low to high, there is no delay, and when it changes from high to low,
there is a 3-minutes delay before conversion.
Manual operation:When unit is on the wind speed can be set to high, medium, low or automatic as required
(execute instruction 2 seconds later after receiving remote signal)
Compressor control The compressor can't be controlled by temperature sensor within 2 minutes after start
up and can be only restarted at least 3 minutes later after shutdown. There is no 3-minute protection with power on
30
Ts, outlet air from compressor is on and indoor fan motor run at fixed wind
Tr Ts+3 , the wind speed is medium.
10