Haier HSU-07HV03/R2 Service Manual page 52

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 compressor
startup.
Controlling the position of air door: set the position of air door as required.
Protection of expiration of current peak value is available: Current cross detection is
available in order
to avoid burning out the compressor when the current is too big. The action
character as follows:
The compressor can't be detected in 60 seconds after startup. when current is above
"CT 1.6 V"
and lasts 3 seconds, the system enter protection mode and shut off compressor with
outdoor air
blower and indoor fan motor controlled as the temperature sensor is off. After 3
minutes the
machine can be started again.
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)
Timer on, Timer off and sleep control are available.
2.4 Heating mode: (Tr: inlet air temperature,Ts£º the set temperature)
The background lighting of the LCD is red
Temperature control range : 16¡æ¡ª 30¡æ
Temperature control precision: ±1¡æ
Control Character:
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¡æof compensation is added after
compressor is started.
When Tr>Ts+5¡æ, compressor is off, and the indoor fan motor runs as in cold blast
avoidance mode.
When Tr<Ts+5¡æ, compressor, four-ways valve and outdoor fan motor is on, and the
indoor fan motor runs as in the mode of avoiding cold blast.
Control of indoor fan motor:
Manual operation: The wind speed can be set to high, medium, low or automatic as
required.
Automatic operation: When Tr < Ts, the wind speed is high;
Control of air door: setting the position of air door as required.
compressor control£º The compressor can't be controlled by temperature sensor in 2
Air Conditioner
When Ts=<Tr<Ts+2¡æ, the wind speed is medium.
When Tr>= Ts+2¡æ, the wind speed is low.
Edition:2006/1/10