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When Tr<Ts+5 , compressor, fourć -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 TrdTs, the wind speed is high;
When Ts d TrdTs+2 , the wind speed is medium. ć
When Ts+2ćd Tr, 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 running 10
seconds earlier than compressor does. After compressor stops running, 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 prevention:
ķCompressor is interrupted during the defrosting operation and continues to run after defrosting is
completed. When the indoor exchanging temperature is below 23 , the indoor fan motor is off. When theć
indoor exchanging temperature is above 23 , the indoorć fan motor is running at weak speed.
ĸIf the temperature of coil pipe can’t be above 38 4 minutes later after start upć 喌fan motor is running
at the preset wind speed.
ĹIf the temperature of coil pipe is above 38 4 minutes later after start up, fan motor ić s running at the
preset wind speed.
ĺIf coil pipe descends to the temp. lower than 38 from 38 . fan motor is running at the preset windćć
speed.
*Warm blast: If the temperature sensor is off. Compressor stops running. If the temperature of coil pipe is
above 23 , fan motor enter breeze mode; and if the temperature of coil pipe is below 20 , fan motor stopsć ć
running.
*High temperature protection and high temperature expiration protection:
ķHigh temperature prevention: When the temp. of coil pipe is above 53 ,ć the outdoor fan motor stops.
When the temp descends to 49 , the outdoor fan motor is restartedć and fan speed invertage frequency is
more than 45 seconds.
ĸHigh temperature expiration prevention: When the temp.of coil pipe is above 60ć, 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 50 , the unit can be started again.ć
*Overcooling protection喚One and half a minutes later after compressor starts, if the temperature of coil
pipe is below 1 , compressor and air outlet stop, and air inlet runs according to the temp. setting.ć
Compressor can be restarted 3 minutes later.
*Defrosting:
Entry conditions of defrosting:
The entry conditions of defrosting are classified into two types: intelligentized defrosting and sensor
defrosting. Through selecting and judging, the models without outdoor sensor defrost according to
intelligentized defrosting, and others with sensor defrost according to sensor defrosting.
+6824L/H(A
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