LG MULTI V WATER IV ARWN080LAS4

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Only for training and service purposes
LGE Internal Use Only
3.1.2 Pressure control on heating mode
■ High pressure control
■ Low pressure control
Pressure Range
P
s ≥ 190 kPa
Ps ≤ 190 kPa
Ps ≤ 98 kPa
Compressor
+2 Hz or less/10sec.
Normal control
Stop
Ps ≤ 124 kPa
-15Hz/10sec.
Ps ≤ 137 kPa
Frequency holding
Pressure Range
P
d ≥ 4003 kPa
P
d > 3415 kPa
Compressor
Stop
-15Hz/10sec.
Function
3.1 Pressure protection control
3.1.1 Pressure control on cooling mode
■ High pressure control
■ Low pressure control
❈ Frequency holding : frequency (or RPM) is not increasing ( can decrease )
❈ Frequency holding : frequency (or RPM) is not increasing ( can decrease ).
3. Protection control
Pressure Range
P
d ≥ 4000 kPa
3775 kPa
3578 kPa
P
d > 3775 kPa
P
d ≥ 3513 kPa
P
d ≥ 3480 kPa
P
d < 3480 kPa
Normal control
Pressure Range
Compressor
Stop
-15Hz/10sec.
Compressor
Stop
-15Hz/10sec.
Frequency holding
+2 Hz or less/10sec.
Ps ≤ 98kPa, 1 minute later operation
Ps ≤ 124kPa, 1 minute before operation