LG ABNH186HLAB, Service Manual

Page: 144 / 183

144 Universal System Air Conditioner
Outdoor Units
2.4 Oil equalizing control
2.4.1 Inv comp. Only : in heating & cooling
Operating condition :
1) When the continuous inverter compressor running time at under 25 Hz(option) is over 25 min.(option),oil restor-
ing operation is made.
2) If safety control device is operating under the 1) condition,this operation is not made.
3) During this operation,if operating Hz couldn’t be changed by safety control ,stop this operation.
Operating process :Once change the operating HZ to 50(option), and recover to the last value.
2.4.2 MPS system : in heating & cooling
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.