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Room Air Conditioner
Part 2 Functions & Controls
5.12 Low Ambient control
5.12.1 9,12kBtu/h Model
• If outdoor temperature drops below certain temperature, liquid back is prevented by reducing fan speed.
• It can prevent frosting of evaporator and keep cooling operation
• No matter even if the outdoor temperature reaches -10°C(14°F).
• You can Cool your room at your desired temperature all year around.
Freq.
0
°
C(32
°
F)
°
…
Outdoor temp.
Outdoor pipe temp.
0
°
C outdoor fan On/Off
control
°
Comp Freq.
Outdoor fan
On
On
Off
Off
Outdoor temp.:-10
°
C(14
°
F)
-5(23
°
F)
0(32
°
F)
5(41
°
F)
10(50
°
F)
15(59
°
F)
20(68
°
F)
25(77
°
F)
0
50
100
150
200
Time(Min.)
Temp.(
°
C)
Outdoor fan On/Off control
Cond . temp.
5.12.2 18, 24, 30kBtu/h Model
Low ambient cooling case : In this situation outdoor fan works in ON/OFF control.
: If the pipe temperature 0°C(32°F) and it is falling rapidly in that case compressor will run for 5 min & then it will
go in low ambient control. (
❈
Temp. value can be different for each model.)
❈
After the system is stopped by CT cut or heat sink cut-off then the cycle returns to the normal condtiond control.
(T1 = 0)
°
C
(T2 = 0)
°
C
Outdoor pipe temp
O/D fan
Set speed
Off
Off
Set speed
Set speed