LG MULTI V M ARNU07GTU 4 Series

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Only training and service purposes.
3.1.2 Pressure control on heating mode
n High pressure control
n Low pressure control
Function
3.1 Pressure protection control
3.1.1 Pressure control on cooling mode
n High pressure control
n Low pressure control
h Frequency holding : frequency (or RPM) is not increasing ( can decrease )
h Frequency holding : frequency (or RPM) is not increasing ( can decrease ).
3. Protection control
Pressure Range Compressor Fan
Ps ≤ 98 kPa, 1 minute later operation Stop
Ps ≤ 124 kPa -15Hz/10 s -100RPM/10 s
Pressure Range Compressor Fan
Pd > 3846 kPa Stop
Pd ≥ 3513 kPa -15Hz/10 s -50RPM/10 s
Pd ≥ 3317 kPa Frequency holding -50RPM/10 s
Pd ≥ 3115 kPa Frequency holding RPM holding
Pd < 3115 kPa Normal control
Pressure Range Compressor Fan
Ps ≤ 98 kPa, 1 minute later operation Stop
Ps ≤ 124 kPa -15Hz/10 s +100RPM/10 s
Ps > 124 kPa Frequency holding +100RPM/10 s
Ps ≥ 137 kPa +2Hz or less/10 s +100RPM/10 s
Ps ≥ 190 kPa Normal control
Pressure Range Compressor
Pd ≥ 4167 Stop
Pd ≥ 4036 -5Hz/10 s
Pd ≥ 3938 Frequency holding
Pd < 3840 Normal control