LG General Wall Mounted-Inverter Type - Manual (Page 29)

Service Manual 29
Part 2 Functions & Controls
5.14 Oil equalizing control(30kBtu/h Model)
Operating condition :
1) When the continuous inverter compressor running time at under 40 Hz(option) is over 2 hours(option) in 2 com-
pressor system, oil restoring operation is made.
2) If compressor operating Hz is below 40 Hz by the safety control, the accumulated time will be cleared and oil
restoration is not made.
3) During this operation,if operating Hz couldn’t be changed by safety control ,stop this operation.
Operating process : Raise the operating HZ up to 70,and after 20 sec.(option) recover to the last value.
5.13 Oil return control(30kBtu/h Model)
5.13.1 Operating Contion
1) When the continuous running time is over 3hr.(option), oil returning operation is made for 3min.
In case of the initial operation, oil returning operation is made, after completing initial operation.
2) After defrost and oil returning operation, the continuous running time is resetted.
5.13.2 Operation Process
1) EEV-Full open, Hot gas bypass valve-On
2) Compressor Step-70Hz + Constant Comp. On(Option)
3) Reversing valve-Off(Process of Off/On, follows defrost operating.)
4) Outdoor Fan-Low step