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2.2 Dry Mode
2.2.1 Dry Conditions and Process
When Tamb. 2 , the unit starts drying and cooling operation. In this case, the compressor and the outdoor fan
operate; the indoor fan operates at low speed.
When Tpreset-2 ≤Tamb. ≤2 , the unit will start drying operation. In this case, the indoor fan operates at low speed;
the compressor and the outdoor fan operate for 6 minutes and stop for 4 minutes in cycle.
When Tamb. Tpreset-2 , the compressor and the outdoor fan stop operation; the indoor fan operates at low speed.
In drying mode, the four-way valve is de-energized; temperature setting range is 16 30 ; the indoor unit displays operation
icon, dry icon and set temperature.
2.2.2 Protection
Freeze protection
During drying and cooling operation, if the system is under freeze protection, the compressor and outdoor fan stop operation
while indoor fan operates at low speed. If freeze protection is eliminated and the compressor has been out of operation for 3
minutes, the complete unit will resume its previous running status.
During the cycle of on for 6 min and off for 4 min, if freeze protection is detected, the compressor and the outdoor fan will stop
operation; the indoor fan will operate at low speed. When freeze protection is eliminated and the compressor has been out of
operation for 4 minutes, the complete unit will resume its previous running status.
2.2.3 Other protection
Other protections are the same as those in cooling mode.
2.3 Heating mode
2.3.1 Heating conditions and process
When Tamb. ≤2 , the unit starts heating operation. In this case, the 4-way valve, compressor and outdoor fan operate
simultaneously; the indoor fan operates with a maximum delay of 2 minutes.
When Tamb≥4 , the compressor and outdoor fan stop operation. The 4-way valve remains energized; the indoor fan
blows residual heat.
When T
preset
+2 T
amb.
T
preset
+4 , the unit will maintain its previous running status.
Under this mode, the 4-way valve is energized; temperature setting range is 16 30 ; the indoor unit displays operation icon,
heating icon and set temperature.
T2 ˚C
Tpreset –2 ˚C
Tamb.
Compressor
Outdoor fan
Indoor fan
Cooling
6 min.
6 min.
4 min. 4 min.
low speed
Run
Stop
Drying
Stop running
4 ℃
2 ℃
Stop heating
Original operating status
Start heating
Run
Indoor fan
valve
Outdoor fan
Compressor
Stop
min.
min.
min.
Tamb. .
min. min.
preset wind preset wind
Reversing