Protection Control; Pressure Control On Cooling Mode - LG multi V PLUS Service Manual

3. Protection control

3.1 Pressure protection control

3.1.1 Pressure control on cooling mode

High pressure control
Pressure range
Pc>2657kPa
2441kPa <Pc ≤ 2657 kPa
2284kPa <Pc ≤ 2422kPa
Pc ≤ 2284kPa
Low pressure control(above -10˚C)
Pressure range
Pe >101kPa
62 kPa< Pe ≤ 101kPa
49 kPa< Pe ≤ 62 kPa
Pe ≤ 49 kPa
• Hot gas bypass off condition : if hot gas bypass valve is on, the valve turn off above 399 kPa
Compressor
System stop
5 Hz down/sec
High pressure
No frequency up
Low pressure High pressure
control
Compressor
Low pressure High pressure
control
Low pressure
No frequency up
control
5 Hz down/sec 5 Hz down/sec
System stop
Hot gas
Fan
bypass
10 Hz up/sec
control
control
Hot gas
Fan
bypass
control
On
On
Service Manual 213
Function
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