Lennox LNINVC052, Руководство по обслуживанию

Страница: 28 / 117

25
Technical Information
Service Manual
②
The indoor unit displays operation icon, cooling icon and set temperature.
③
Protection functions (See function protection of this section)
(3) Dry Mode
①
Dry conditions and process
◆
When Tamb. ≥Tset-0.5
℃
, the unit starts drying and cooling. In this case, the compressor and the ODU fan motor run, and the IDU fan
motor runs at low speed.
◆
When Tamb. ≤Tset-2
℃
, the compressor and the ODU fan motor stop after a few seconds, while the IDU fan motor runs at low speed.
◆
When Tset-2
℃＜
Tamb.
＜
Tset-0.5
℃
, the unit will maintain its present operation status.
◆
When the unit stops due to malfunction or protection, the indoor unit maintains its present operation status and displays malfunction
code.
In this mode, the 4-way valve is de-energized (cooling only unit is without 4-way valve). Temperature setting range is 16
～
30
℃
.
②
The indoor unit displays operation icon, dry icon and set temperature.
③
Protection functions (See function protection of this section)
(4) Fan mode
①
Fan conditions and process
In this mode, IDU fan motor runs at set speed while the compressor and ODU fan motor stop operation. The 4-way valve is de-energized
(cooling only unit is without 4-way valve). Temperature setting range is 16
～
30
℃
.
②
The indoor unit displays operation icon and set temperature.
③
Protection functions (See function protection of this section)
(5) Heating mode (not available for cooling only type)
①
Heating conditions and process
◆
When Tamb.≤Tset+3.5
℃
, the unit starts heating operation. In this case, the 4-way valve, compressor and ODU fan motor run
simultaneously; the IDU fan motor runs after a while to prevent blowing out cold air.
◆
When Tamb. ≥Tset+5
℃
, the compressor and ODU fan motor stop after a few seconds; the 4-way valve remains energized; the IDU
Indicates operation
Indicates stop
Tpreset -0.5 ˚C
Tpreset –2 ˚C
Compressor
Outdoor fan motor
Indoor fan motor
Graphic instruction:
(Same as below)
Tamb.
Stop cooling
Start cooling
Original operating status
7 min. 3 min. 7 min.
Set fan speed
Tpreset -0.5 ˚C
Tpreset –2 ˚C
Compressor
Outdoor fan motor
Indoor fan motor
Tamb.
Stop Drying
Start Drying
Original operating status
7 min. 3 min. 7 min.
Low speed