Oil Return/Defrost Control; Liquid Bypass Control; Heat Recovery Units - LG Multi V5 Service Manual

Table 53: Oil Return / Defrost Control.
Component
Inverter Compressor
High Pressure Vapor Valve
Low Pressure Vapor Valve
Balancing Valve

Liquid Bypass Control

Are the Indoor Units Operating?
Are All the Indoor Units
Operating in Cooling Mode?
Solenoid Valve Open for Liquid
Low Pressure Vapor Valve).
Subcooling EEV Control
Subcooling EEV operates with fuzzy logic to keep the degree of subcooling (Target: About 77°F) at the outlet of the subcooler during simulta-
neous cooling / heating operation.
Temperature of Subcooler = T Subcooler Outlet – T Subcooler Inlet
HEAT RECOVERY UNIT FUNCTIONS
Start
Stop
Keep
Keep
Open for 30 seconds
No
Yes
Due to our policy of continuous product innovation, some specifications may change without notification.
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During Operation
60 Hz
Close
Open
Close
Special Control
Stop
40 Hz
Open or Close
Open or Close
Close
95