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1Temperature Parameters
Indoor preset temperature (Tpreset)
Indoor ambient temperature (Tamb.)
2 Basic functions
(The temperature in this manual is expressed by Centigrade. If Fahrenheit is used, the switchover between
them is Tf=TcX1.8+32.)
Once the compressor is energized, there should be a minimum interval of 3 minutes between two start-ups. But if the unit is
de-energized and then energized, the compressor can restart within 3 minutes.
2.1 Cooling mode
2.1.1 Cooling conditions and process
When Tamb. ≥1
, the unit starts cooling operation. In this case, the compressor and the outdoor fan operate and the
indoor fan operates at set speed.
When Tamb. ≤Tpreset-1
, the compressor and the outdoor fan stop while the indoor fan runs at set speed.
When Tpreset-1
Tamb.
1
, the unit will maintain its previous running status.
In cooling mode, the four-way valve is de-energized; temperature setting range is 16
30
; the indoor unit displays operation
icon, cooling icon and set temperature.
2.1.2 Protection Functions
Freeze protection
f the system is under freeze protection, the compressor and the outdoor fan stop operation, and the indoor fan operates at set
speed. If freeze protection is eliminated and the compressor has been out of operation for 3 minutes, the unit will resume its
previous running status.
T
preset
+1
T
preset
1
T
amb.
Start cooling
Original operating status
Stop cooling
min
.
min
.
min
.
Compressor
Outdoor fan
Indoor fan
Preset speed
Run
Stop
During antifreeze protection
Compressor
Outdoor fan
Indoor fan
min
Preset speed
Run
Stop