LG multi V PLUS, Service Manual

Page: 210 / 373

210 Outdoor Unit
Function
2.3.3 Equalizing control of compressors
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Equalizing control about sub unit which no compressor operates
- No equalizing control works
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Equalizing control about sub unit which one compressor operates
1) Current compressor works for 2 min after oil equalizing control begins
2) Current compressor stops after 2 min.
3) The other compressor work after the one compressor stops for 2 min.
4) The compressor working is changed after ending of oil equalizing control.
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Equalizing control about unit which two compressor operates
1) One compressor stops at beginning of oil equalizing control according to compressor stage table
(stage 1 down)
2) Sub unit works with only one compressor for 2 min.
3) Current operating compressor stops after 2 min.
4) The other compressor runs for 2 min.
5) After 2 min, two compressors start to work after ending operation.(stage up)
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Equalizing control about inverter compressor
1) Inverter compressor keep 30Hz operation during constant compressor operation.
2) Frequency increases 80Hz after 1min.
3) Inverter compressor decrease frequency to 40Hz after ending operation
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Equalizing control change condition
Any Indoor unit's operation mode is changed to thermo off state.
After equalizing control is changed, alternate equalizing control begins.
• Alternate equalizing control: it controls each compressor to turn on and turn off one by one for 2 min per 1
compressor