
Domestic air conditioner
*Temperature control range : 16ďā30ď
*Temperature control precision: r1ď
*Control Character:
When Tr dTs, compressor, four-ways valve and outdoor fan motor is on, indoor fan motor runs as in cold
blast mode, and 4ďof compensation is added after compressor is started.
When Tr!Ts+5ď, compressor is off, and the indoor fan motor runs as in warm blast mode.
When Tr<Ts+5ď, 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;
WhenTsdTrTs+2ď, the wind speed is medium.
WhenTs+2ďdTr, the wind speed is low.
*Control of air door: setting the position of air door as required.
*Compressor control喚The compressor can’t be controlled by temperature sensor in 2 minutes after start up
and also can’t be started again at least 3 minutes later after shut down. There are 3-minute protection with power
on for the first time (over 3 minutes with power off). The compressor must be started again 3 minutes later after
shut down.
*Avoiding electrical shock: outlet air is available 2 seconds later after start up.
*Timer on, Timer off and sleep control are available.
*Control of 4-way valve: When the unit is started for the first time, the 4-way valve starts runnig 10 seconds
earlier than compressor does. After compressor stops runnig, the 4-way valve continues running for 2 minutes and
then stops. If changing the unit from heating to cooling, the 4-way valve is shut off 2 minutes later and
compressor is started 3 minutes later.
*Cold draft prevetion:
(1)Compressor is interrupted during the defrosting operation and continues to run after defrosting is
completed. When the indoor exchanging temperature is below 23ď, the indoor fan motor is off. When the indoor
exchanging temperature is above 23ď, the indoor fan motor is running at weak speed.
(2)If the temperature of coil pipe can’t be above 38ď4 minutes later after start up, fan motor is running at
the preset wind speed.
(3) If the temperature of coil pipe is above 38ď4 minutes later after start up, fan motor is running at the
preset wind speed.
(4)If coil pipe descends to the temp. lower than 38ďfrom 38ď. fan motor is running at the preset wind
speed.
*Warm blast: If the temperature sensor is off. Compressor stops runnig. If the temperature of coil pipe is
above 23ď, fan motor enter breeze mode; and if the temperature of coil pipe is below 20ď, fan motor stops
running.
*High temperature protection and high temperature expiration protection:
(1)High temperature prevention: When the temp. of coil pipe is above ď, the outdoor fan motor
stops.When the temp descends to ď, the outdoor fan motor is restarted and fan speed invertage frequence is
more than 45 seconds.
(2)High temperature expiration prevention:When the temp.of coil pipe is above 72ď,compressor and outlet
air stop running 10 seconds later, and inlet air runs as the temp. sensor is off. When compressor stands by for 3
minute and the temp. of coil pipe is below 64ď, the unit can be started again.
*Current protection and current expiration protection: (Not detecting within 60 seconds after start up)
*Overcooling protection˖One and half a minutes later after compressor starts, if the temperature of coil pipe
HSU-22L/HEA03 Functions and control
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