Protection Control; Pressure Protection Control - LG ARUV Series Service Manual

3. Protection control

3.1 Pressure protection control

3.1.1 Pressure control on cooling mode
High pressure control
Pressure Range
Pd ≥ 3676 kPa
Pd > 3546 kPa
Pd ≥ 3284 kPa
Pd < 3284 kPa
Low pressure control
Pressure Range
Ps ≤ 229 kPa
after 1min
Ps ≤ 229 kPa
before 1min
Ps ≤ 242 kPa
Ps ≥ 399 kPa
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Compressor
Stop
-5Hz/2sec.
Frequency holding
Normal control
Compressor
Stop
-5 Hz/2sec.
Normal control
Normal control
- 209 -
Fan Hot gas
Stop
+10Hz/2sec.
Normal control
Fan Hot gas
Stop
-10Hz/2sec.
Frequency
holding
Function
Off
On
Off
LGE Internal Use Only