Protection Controls; Pressure Protection Control - LG MULTI V ARUN072BTE4 Service Manual

PROTECTION CONTROLS

Pressure Protection Control

Pressure Protection Control
Pressure Control in Cooling Mode
Table 12: High Pressure Control in Cooling Mode.
Pressure Range
Pd ≥ 580 psi
548 psi
519 psi
Pd > 548 psi
Pd ≥ 510 psi
Pd ≥ 505 psi
Pd < 505 psi
* Frequency Hold = Frequency (or RPM) is not increasing (can decrease).
Table 13: Low Pressure Control in Cooling Mode.
Pressure Range
Ps ≤ 14 psi, One (1) minute After Operation
Ps ≤ 118 psi, One (1) minute Before Operation
Pressure Control in Heating Mode
Table 14: High Pressure Control in Heating Mode.
Pressure Range
Pd ≥ 581 psi
Pd > 495 psi
Table 15: Low Pressure Control in Heating Mode.
Pressure Range
Ps ≤ 14 psi
Ps ≤ 18 psi
Ps ≤ 20 psi
Ps ≤ 28 psi
Ps ≥ 28 psi
* Frequency Hold = Frequency (or RPM) is not increasing (can decrease).
14
Compressor
-15 Hz / 10 seconds
Frequency Hold*
+2 Hz or less / 10 seconds
Compressor
-15Hz / 10 seconds
Compressor
-15 Hz / 10 seconds
Compressor
-15 Hz / 10 seconds
Frequency Hold*
+2 Hz or less / 10 seconds
Normal Control
Due to our policy of continuous product innovation, some specifications may change without notification.
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Stop
Normal Control
Stop
Stop
Stop
Fan
Stop
+100 RPM / 10 seconds
+100 RPM / 10 seconds
+100 RPM / 10 seconds
Fan
Stop
-100 RPM / 10 seconds
Fan
Stop
-50 RPM / 10 seconds
Fan
Stop
+100 RPM / 10 seconds
+100 RPM / 10 seconds
+100 RPM / 10 seconds
Normal Control