Haier HSU-07HV03/R2 Service Manual page 59

15 minutes later: it will switch to the cooling mode if the temperature is Tr£¾ Ts+3¡æ.
2.2 Cooling run mode: (Tr: inlet air temperature,Ts£º the set temperature)
The background lighting of the LCD is blue
Temperature control range : 16¡æ¡ª 30¡æ
Temperature control precision: ±1¡æ
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 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.
wind speed control: (the temperature difference is 1¡æ)
auto: when Tr>=Ts+3¡æ, the wind speed is high;
when Ts+1¡æ≤Tr<Ts+3¡æ, the wind speed is medium.
When Tr<Ts+1¡æ, 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 higher, there is no delay, and
when it 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 required (execute instruction 2 seconds later after receiving remote
signal)
compressor control£º 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
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.
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.
Avoiding electrical shock: outdoor fan motor is available 2 seconds later after the
compressor startup.
Controlling the position of air door: set the position of air door as required.
Protection of frost is available (disable in test run or heating mode): In order to prevent the
indoor heat
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¡æ and
the compressor runs for over 5 minutes. When the temperature of the indoor
coil pipe ascends to over 7¡æ, the compressor is restarted (must meet a 3-minutes
delay)
Air Conditioner
Edition:2006/1/10