LG Multi V5 Service Manual

45
Outdoor Unit Functions
Due to our policy of continuous product innovation, some specifications may change without notification.
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SPECIAL CONTROL
Oil Return Control
Oil return operation recovers any oil that has accumulated in the piping and returns it to the compressor. Each component operates as shown
in the tables below during oil return.
Oil Return in Cooling Mode
Table 2: Outdoor Unit Oil Return Control in Cooling Mode.
Component Start During Oil Return Operation Stop
Inverter Compressor 30Hz Set Value 30Hz
Fan Normal Control Normal Control Normal Control
Main EEV
Upper: Minimum Pulse
Lower: Maximum Pulse
Upper: Minimum Pulse
Lower: Maximum Pulse
Upper: Normal Control
Lower: Normal Control
Subcooling EEV Minimum Pulse 20 Pulse 80 Pulse
Four-Way Valve 1 Off Off Off
Four-Way Valve 2
Heat Pump: On
Heat Recovery: Off
Off Off
Table 3: Indoor Unit Oil Return Control in Cooling Mode.
Component Start During Oil Return Operation Stop
Fan Normal Control Off Normal Control
Thermo On Unit EEV Normal Control Normal control Normal Control
Thermo Off Unit EEV 40 Pulse 400 Pulse 40 Pulse
Oil Return Signal Off On Off
• Start: Oil Return Operation begins when the oil sensor continuously measures low oil levels.
• Oil Return Operation will run for three (3) minutes.
• Stop: Oil Return Operation will end if / when compressor protection control starts.
Table 4: Outdoor Unit Oil Return Control in Heating Mode.
Component Start During Oil Return Operation Stop
Inverter Compressor 30Hz Set Value 40Hz
Fan Normal Control Normal Control Normal Control
Main EEV
Upper: Minimum Pulse
Lower: Maximum Pulse
Upper: Minimum Pulse
Lower: Maximum Pulse
Upper: Normal Control
Lower: Normal Control
Subcooling EEV Minimum Pulse 20 Pulse 80 Pulse
Four-Way Valve 1 On Off On
Four-Way Valve 2
Heat Pump: Off
Heat Recovery: Off
Off Off
Oil Return Control in Heating Mode
Table 5: Indoor Unit Oil Return Control in Heating Mode.
Component Start During Oil Return Operation Stop
Fan Normal Control Off Normal Control
Thermo On Unit EEV Normal Control 400~800 Pulse Normal Control
Thermo Off Unit EEV 80~130 Pulse 400~800 Pulse 80~130 Pulse
• Start: Oil Return Operation begins when the oil sensor continuously measures low oil levels.
• Oil Return Operation will run for three (3) minutes.
• Stop: Oil Return Operation will end if / when compressor protection control starts.
Oil Return Control

LG Multi V5 Specifications

General

Compressor Type	Inverter Scroll
Refrigerant	R410A
Energy Efficiency	High
Heat Recovery	Available
Smart Diagnosis	Yes
Type	VRF (Variable Refrigerant Flow)
Control	Centralized Control
Power Supply	380-415V / 3Ph / 50Hz