Protection Control Mini UM S/M48 Function4.4 Inverter Protection ControlInverter current protection control and inverter fin temperature control are performed to preventtripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase.[Inverter overcurrent protection control][Inverter fin temperature control]Not limitedLimitedInverter current >23.8AInverter currentInverter current ≥ 24.9A>23.8A•Inverter current ≤ 23.8A•INV upper limit frequency&•10 sec.•Matching of frequency&• When occurring 3 times within 60 min.,the malfunction code "L8 " is output.• When occurring 3 times within 30 min.,the malfunction code "L9" is outputINV upper limit frequency:1-step down from currentcompressor frequencyINV upper limit frequency:1-step up from currentcompressor frequencyInverter currentstandbyInverter current ≤ 23.8Acontinues for 3 min.Status quoWithout conditions(V3178)Not limitedLimitedTfin≥93°CTfin≥93°CTfin≥99°CFin temp. standby&•INV upper limit frequency:1-step down from currentcompressor frequency&Tfin≤90°Ccontinues for 3 min.INV upper limit frequency:1-step up from currentcompressor frequencyStatus quoWithout conditions(V3179)• Tfin<90°C• INV upper limit frequency• 10 sec.• Matching of frequencyWhen occurring 3 times within 60 min.,the malfunction code "L4" is output.
