Enphase
DC Res Low

DC Resistance Low (Ground Fault / GFDI)

Ground Fault Detection and Interruption (GFDI) has detected low DC resistance to earth from the module wiring.

Module bypass diode failure causing frame-to-wiring shortDamaged module junction box sealWet wiring connector
STEP 1
Identify the specific microinverter(s) flagging this event in Enlighten. Inspect the module and wiring connector at that location for damage or moisture
STEP 2
Replace damaged connector or cable at the affected module. Check module junction box integrity
No wiring fault found and fault persists — module junction box failure, escalate
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More Enphase fault codes

ACVOOR
AC Voltage Out of Range
ACFOOR
AC Frequency Out of Range
DC Too Low
DC Input Voltage Too Low
DC Too High
DC Input Voltage Too High
Crit Temp
Critical Temperature