Electronics
AC Module System Installation Manual
Copyright © 2020 LG Electronics.
All Rights Reserved.
96
Rev. 1.0
Cause
Device
Event Code
Impact
Event Name
(App / Web)
Event
Class
Description
Remarks
MI
MI_VDC_OVR
Error
Inverter
Failure Error
Vdc
Status
ERROR. Iac Status - 1:
Vdc Over (Error #4
DC Link Voltage High)
AC Module has been in failure
mode.
MI_VFR_OVR
Notice AC Frequency
High
Vfreq
Status
NOTICE. Vfreq
Status 10: Vfreq Over
AC Frequency is the
frequency at which voltage
varies on the utility grid. AC
Frequency coming from the
utility is higher than allowed.
These events are usually
transient and recovered
by the utility. No action is
required unless the condition
persists.
MI_VFR_UND
Notice AC Frequency
Low
Vfreq
Status
NOTICE. Vfreq Status
11: Vfreq Under
AC Frequency is the
frequency at which voltage
varies on the utility grid. AC
Frequency coming from the
utility is lower than allowed.
These events are usually
transient and recovered
by the utility. No action is
required unless the condition
persists.
MI_VPV_OVR
Error
DC Voltage
High
Vpv
Status
ERROR. Vpv
Status -10: Vpv Over
(Error #1 - DC Voltage
Too High)
DC Input voltage from the AC
Module is higher than
allowed.
MI_VPV_UND
Notice
DC Voltage
Low
Vpv
Status
NOTICE. Vpv
Status -11: Vpv Under
(Error#7 - DC Voltage
Too Low)
DC Input voltage from the
AC Module is too low. This
is usually a normal condition
during hours of low light
and at dawn and dusk. If this
condition does happen during
hours of full daylight, the
AC Module may be heavily
shaded or covered by snow.