Also applies to:SUN-120K-G01P3-EU-BM8SUN-125K-G01P3-EU-BM8SUN-130K-G01P3-EU-BM8SUN-135K-G01P3-EU-BM8SUN-136K-G01P3-EU-BM8SUN-7K-G02P1-EU-AM2SUN-7.5K-G02P1-EU-AM2SUN-8K-G02P1-EU-AM2+3
What it means
DC feedback fault — Current was detected feeding back into the DC side. The manual notes this code has hardly ever appeared in the field.
Cause: Current was detected flowing back into the DC side (DC feedback/backfeed).
How to fix it
Restart the inverter; if the code persists after the restart, contact your installer or Deye service and provide the inverter serial number, the installation date and the displayed error code.
Source: sun-120k-g01p3-eu-bm8-sun-125k-g01p3-eu-bm8-sun-130k-g01p3-eu-bm8-manual.pdf, p.62 · sun-7k-g02p1-eu-am2-sun-7-5k-g02p1-eu-am2-sun-8k-g02p1-eu-am2-manual.pdf, p.51 · sun-9k-g02p1-eu-am2-sun-10k-g02p1-eu-am2-sun-10-5k-g02p1-eu-am2-manual.pdf, p.51
Also applies to:SUN-60K-G03SUN-70K-G03SUN-75K-G03SUN-80K-G03SUN-90K-G03SUN-100K-G03SUN-110K-G03SUN-60K-G01P3-EU-AM8-LV+7
What it means
DC feedback fault — Current was detected feeding back into the DC side.
Cause: Current was detected flowing back into the DC side (DC feedback/backfeed).
How to fix it
Restart the inverter; if the fault is not ruled out, contact the installer or the manufacturer's customer service.
Source: sun-70k-g03-sun-75k-g03-sun-80k-g03-sun-90k-g03-sun-100k-g03-sun-110k-g03-manual.pdf, p.62 · sun-120k-g01p3-eu-am8-manual.pdf, p.61 · sun-60k-g01p3-eu-am8-lv-sun-70k-g01p3-eu-am8-lv-sun-75k-g01p3-eu-am8-lv-manual.pdf, p.61 · +1 more official manuals
Also applies to:SUN-6K-G06-LV-P1SUN-8K-G06-LV-P1SUN-6K-G06P3-EU-BM2-LV-P1SUN-8K-G06P3-EU-BM2-LV-P1SUN-10K-G05-LVSUN-12K-G05-LVSUN-15K-G05-LVSUN-15K-G06P3-EU-BM2-P1+27
What it means
DC feedback fault — Reverse (feedback) energy flow detected on the DC side.
Cause: Current fed back into the DC input instead of flowing from the PV array into the inverter.
How to fix it
Restart the inverter; if the fault is not ruled out, contact the installer or manufacturer customer service.
Source: sun-6k-g06-lv-p1-manual.pdf, p.57
Also applies to:SUN-1K-G04P1-EU-AM1SUN-1.5K-G04P1-EU-AM1SUN-2K-G04P1-EU-AM1SUN-2.2K-G04P1-EU-AM1SUN-2.5K-G04P1-EU-AM1SUN-2.7K-G04P1-EU-AM1SUN-3K-G04P1-EU-AM1SUN-3.3K-G04P1-EU-AM1+36
What it means
DC feedback fault — Reverse (feedback) energy flow detected on the DC side.
Cause: Current fed back into the DC input instead of flowing from the PV array into the inverter.
How to fix it
Deye states this code has hardly ever appeared in the field; contact your installer or Deye service if it occurs.
Source: sun-2-7k-g04p1-eu-am1-sun-3k-g04p1-eu-am1-sun-3-3k-g04p1-eu-am1-sun-3-6k-g04p1-eu-am1-sun-4k-g04p1-eu-am1-manual.pdf, p.53 · sun-7k-g06p3-eu-bm2-sun-8k-g06p3-eu-bm2-sun-9k-g06p3-eubm2-sun-10k-g06p3-eu-bm2-sun-12k-g06p3-eu-bm2-manual.pdf, p.57
Also applies to:SUN-5K-SG01HP3-EU-AM2SUN-6K-SG01HP3-EU-AM2SUN-8K-SG01HP3-EU-AM2SUN-10K-SG01HP3-EU-AM2SUN-12K-SG01HP3-EU-AM2SUN-15K-SG01HP3-EU-AM2SUN-20K-SG01HP3-EU-AM2SUN-25K-SG01HP3-EU-AM2+9
What it means
DC Feedback Fault — DC_Feedback_Fault - abnormal DC feedback detected.
Cause: The inverter detected abnormal DC feedback and tripped its DC feedback protection.
How to fix it
Restart the inverter 3 times and restore the factory settings.
Source: sun-12k-sg01hp3-eu-am2-manual.pdf, p.50 · sun-29.9-30-35-40-50k-sg01hp3-eu-bm3-4-20260224-en-manual.pdf, p.51 · sun-60-70-75-80k-sg02hp3-eu-em6-20260224-en-manual.pdf, p.51
Also applies to:RW-L2.5ARW-L5.1RW-L10.2RW-F16SE-F5SE-F5 PlusSE-F5 ProSE-F12+7
What it means
AFE communication fails — The BMS controller lost communication with its analog front-end chip.
Cause: Internal communication between the BMS microcontroller and the analog front end failed - an internal BMS board fault.
How to fix it
- 1Restart the battery with the BMS switch.
- 2If the code persists, the BMS board needs service - contact Deye support.
Source: deye-rw-l2.5a-user-manual-en.pdf, p.10 · rw-f16-manual.pdf, p.10 · rw-l10-2-manual.pdf, p.10 · +6 more official manuals
Also applies to:GB-A
What it means
ALARM_ID_POWER_SUPPLY_FAULT — Abnormal supply voltage.
Cause: The BMS auxiliary power-supply voltage is out of range - a fault in the internal supply or its source.
How to fix it
- 1Restart the system.
- 2If the fault persists, contact Deye support.
Source: gb-a-pack6-gb-a4-gb-a10-gb-a16-manual.pdf, p.13