Electrical Control - Haier HSU-12LV03 Service Manual

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ELECTRICAL CONTROL

ELECTRICAL CONTROL
1. Run mode:(Tr: inlet air temperature,Ts:the set temperature)
1. Run mode:(Tr: inlet air temperature,Ts:the set temperature)
1.1 automatic run mode
1.1 automatic run mode
The background lighting of the LCD is white
The background lighting of the LCD is white
1) cooling only type automatic run mode:
1) cooling only type automatic run mode:
When the system runs under "automatic" mode for the first time, it will determine the operating mode
When the system runs under "automatic" mode for the first time, it will determine the operating mode
according to the follows,
according to the follows,
Tr≥Ts+3℃ Choose Cooling mode
Tr≥Ts+3℃ Choose Cooling mode
Tr<Ts-3℃ Choolse Blowing Mode
Tr<Ts-3℃ Choolse Blowing Mode
The system will shift its operating mode between the above mentioned two to changes of the indoor
The system will shift its operating mode between the above mentioned two to changes of the indoor
temperature. If the system is currently under cooling mode, it will switch to blowing mode when
temperature. If the system is currently under cooling mode, it will switch to blowing mode when
Tr<Ts-3℃; if the system is currently under blowing mode, it will in turn switch to cooling mode
Tr<Ts-3℃; if the system is currently under blowing mode, it will in turn switch to cooling mode
when Tr > Ts+3℃. The switching mode as below,
when Tr > Ts+3℃. The switching mode as below,
1.2 Cooling run mode: (Tr: inlet air temperature,Ts:the set temperature)
1.2 Cooling run mode: (Tr: inlet air temperature,Ts:the set temperature)
The background lighting of the LCD is blue
The background lighting of the LCD is blue
Temperature control range : 16℃—30℃
Temperature control range : 16℃—30℃
Temperature control precision: ±1℃
Temperature control precision: ±1℃
Compressor can't be controlled by temperature sensor within 2 minutes after it starts.
Compressor can't be controlled by temperature sensor within 2 minutes after it starts.
Control character: when Tr> Ts, outdoor fan motor and compressor on, and indoor fan motor run at
Control character: 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
fixed wind speed. When Tr < Ts, outdoor fan motor and compressor off, and when Tr > Ts, outdoor fan motor
and compressor are working again.
and compressor are working again.
If Tr=Ts, the indoor fan motor,outdoor fan motor and the compressor's state will not change.
If Tr=Ts, the indoor fan motor,outdoor fan motor and the compressor's state will not change.
wind speed control: (the temperature difference is 1℃)
wind speed control: (the temperature difference is 1℃)
auto: when Tr>=Ts+3℃, the wind speed is high;
auto: when Tr>=Ts+3℃, the wind speed is high;
when Ts+1℃≤Tr<Ts+3℃, the wind speed is medium.
when Ts+1℃≤Tr<Ts+3℃, the wind speed is medium.
When Tr<Ts+1℃, the wind speed is low.
When Tr<Ts+1℃, the wind speed is low.
When temperature sensor is off, the fan motor runs at low speed.
When temperature sensor is off, the fan motor runs at low speed.
when the wind speed changes from low to higher, there is no delay, and when it
when the wind speed changes from low to higher, there is no delay, and when it
changes from high to lower, there is a 3-minutes delay before conversion.
changes from high to lower, 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
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)
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
compressor control:The compressor can't be controlled by temperature sensor within 2 minutes after
startup and can be only restarted at least 3 minutes later after shutdown. There is no 3-minute
startup and can be only restarted at least 3 minutes later after shutdown. There is no 3-minute
protection with power on for the first time (over 3 minutes with power off). The compressor
protection with power on for the first time (over 3 minutes with power off). The compressor
must stands by for 3 minutes before it is restarted after shutdown.                               
must stands by for 3 minutes before it is restarted after shutdown.                               
There is no 2-minute limit when changing the temperature setting or shutting down the machine
There is no 2-minute limit when changing the temperature setting or shutting down the machine
through the remote controller, and the machine can be shut down immediately.
through the remote controller, and the machine can be shut down immediately.
Controlling the position of air door: set the position of air door as required.
Controlling the position of air door: set the position of air door as required.
Protection of frost is available : In order to prevent the indoor heat
Protection of frost is available : In order to prevent the indoor heat
exchanger from freezing (in refrigation or dehumidifying mode), the compressor will be shut
exchanger from freezing (in refrigation or dehumidifying mode), the compressor will be shut
off when the temperature of the indoor coil pipe is or below 0℃ and the compressor runs
off when the temperature of the indoor coil pipe is or below 0℃ and the compressor runs
for over 5 minutes. When the temperature of the indoor coil pipe ascends to over 7℃, the
for over 5 minutes. When the temperature of the indoor coil pipe ascends to over 7℃, the
compressor is restarted (must meet a 3-minutes delay)
compressor is restarted (must meet a 3-minutes delay)
Timer on, Timer off and sleep control are available.
Timer on, Timer off and sleep control are available.
Air Conditioner
2
Edition:2006/8/20

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