Mode - LG FMN0760NL Service Manual

Outdoor Unit
Power relay control
• If power is on, it will operate to charge capacitor (330µF/450WV) on controller and power relay will oper-
ate after about 2~5sec.
Comp. Freq. control
• The final operating freq. of comp. is set the lowest freq. that limited outdoor temp., discharge pipe temp.,
target freq., owing to CT.
Overheatng. Protection(Powr module)
Freq. speed control(up/down speed)
V/F control
• It will be changed the drive voltage of comp. according to operating frequency.
Total current control (over current protection)
DC peak current control
4 way valve control
• It is only operated in the heating operation mode except defrosting operation.
Outdoor fan motor control
• High speed/Low speed
Discharge pipe temp. control
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