Service Manual
Technical Information
20
6.3 Function Introduction
1 Basic Function
1.1 Cooling mode
1.1.1 Cooling condition and process
a. When Tindoor amb.
Tpreset+1 2 , the unit operates in cooling mode. Meanwhile, compressor and outdoor
fan operate and indoor fan operates at set fan speed.
b. When Tindoor amb.
Tpreset-1 2 , compressor and outdoor fan stop operation, while indoor fan operates at
set fan speed.
c. When Tpreset-1
2 <Tindoor amb.<Tpreset+1 2 , the unit keeps original operation status.
1.1.2 In this mode, the set temperature range is 16 ~30
61 ~86
1.2 Dry Mode
Dry Conditions and Process
a. When Tamb.
Tpreset+2 (4 ), the unit will operate in Cool mode, and the fan will run at low speed.
b. When Tpreset-2
(4 ) Tamb. Tpreset+2 (4 ), the unit will operate in Dry mode. In that case, the indoor fan will operate
at low speed. The compressor and the outdoor fan will stop for 6 min and operate for 4min circularly.
c. When Tamb.
Tpreset-4 (2 ), the compressor will stop working and the fan will operate at low speed.
Under this mode, the setting temperature range is 16~30
61~86
1.3 Energy saving mode
1.3.1 Drying condition and process
a. When Tindoor amb.
Tpreset + 1 2 the compressor will be turned on and the fan will run at set fan speed.
b. When Tindoor amb.
Tpreset – 1 2 , the compressor will stop operation and the indoor fan will also stop
operation after operating at set fan speed for 60s.
c.When Tpreset – 1 (2 )
Tindoor amb. Tpreset + 1 2 , the unit will keep previous operation status.
1.3.2 In this mode, the set temperature range is 16 ~30
61 ~86 .
1.4 Heating mode
1.4.1 When Tindoor amb.
Tpreset+1 , the unit will operate at heating mode. Meanwhile, 4-way valve and compressor will
operate. Fan will operate at cold air prevention condition;
1.4.2 When Tindoor amb.
Tpreset + 3 6 , compressor will stop operation while 4-way valve will be energized. Fan will
operate at blowing residual heat mode.
1.4.3 When Tpreset + 1 Tindoor amb Tpreset + 3 the unit will keep its previous operation status;
1.4.4 Under this mode, the temperature setting range is 16-30
(61-86 ).
1.5 Fan mode
a. In this mode, compressor and electric heating pipe will stop operation and fan will operate at set speed.
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