Also applies to:SUN-120K-G01P3-EU-BM8SUN-125K-G01P3-EU-BM8SUN-130K-G01P3-EU-BM8SUN-135K-G01P3-EU-BM8SUN-136K-G01P3-EU-BM8
What it means
GFCI(RCD) Ac leakage current fault — The GFCI/RCD stage measured an average AC leakage current above 300 mA.
Cause: The average AC leakage current measured by the GFCI/RCD stage exceeds 300 mA, from a real leakage path on the DC supply or solar panels or from a faulty leakage current sensor or its circuit.
How to fix it
- 1Check whether the DC power supply and the solar panels are OK, then check that the 'Test data' -> 'diL' value is about 40, then check the leakage current sensor and its circuit (viewing test data requires the big LCD)
- 2Restart the inverter; if the error still exists, contact your installer or Deye service.
Source: sun-120k-g01p3-eu-bm8-sun-125k-g01p3-eu-bm8-sun-130k-g01p3-eu-bm8-manual.pdf, p.61
Also applies to:SUN-7K-G02P1-EU-AM2SUN-7.5K-G02P1-EU-AM2SUN-8K-G02P1-EU-AM2SUN-9K-G02P1-EU-AM2SUN-10K-G02P1-EU-AM2SUN-10.5K-G02P1-EU-AM2
What it means
GFCI(RCD) Ac leakage current fault — The GFCI/RCD stage measured an average AC leakage current above the protection threshold.
Cause: The average AC leakage current measured by the GFCI/RCD stage exceeds the protection threshold, from a real leakage path on the DC supply or solar panels or from a faulty leakage current sensor or its circuit.
How to fix it
- 1Check whether the DC power supply and the solar panels are OK, then check the 'Test data' -> 'diL' value, then check the leakage current sensor and its circuit (viewing test data requires the big LCD)
- 2Restart the inverter; if the error still exists, contact your installer or Deye service.
Source: 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
GFCI(RCD) Ac leakage current fault — The GFCI/RCD stage measured an average AC leakage current above 300 mA.
Cause: The average AC leakage current measured by the GFCI/RCD stage exceeds 300 mA, from a real leakage path on the DC supply or solar panels or from a faulty leakage current sensor or its circuit.
How to fix it
- 1Check whether the DC power supply and the solar panels are OK, then check that the 'Test data' -> 'diL' value is about 40, then check the leakage current sensor and its circuit (viewing test data requires the big LCD)
- 2Restart the inverter; if the error still exists, contact your installer.
Source: sun-70k-g03-sun-75k-g03-sun-80k-g03-sun-90k-g03-sun-100k-g03-sun-110k-g03-manual.pdf, p.60 · sun-120k-g01p3-eu-am8-manual.pdf, p.60 · sun-60k-g01p3-eu-am8-lv-sun-70k-g01p3-eu-am8-lv-sun-75k-g01p3-eu-am8-lv-manual.pdf, p.60 · +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+48
What it means
GFCI(RCD) AC leakage current fault — The GFCI/RCD function measured continuous (average) leakage current above the limit.
Cause: The average leakage current is over 300 mA, caused by a DC-supply or solar-panel insulation problem, or by a faulty leakage-current sensor or its circuit.
How to fix it
- 1Check whether the DC power supply and solar panels are OK; check the 'Test data' -> 'diL' value (about 40; requires the big LCD); check the leakage-current sensor and its circuit.
- 2Restart the inverter; if the error still exists, contact your installer or Deye service.
Source: sun-6k-g06-lv-p1-manual.pdf, p.57 · 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.56
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+15
What it means
GFCI(RCD) AC leakage current fault — The GFCI/RCD function measured continuous (average) leakage current above the limit.
Cause: The average leakage current exceeded the permanent GFCI/RCD protection limit, caused by a DC-supply or solar-panel insulation problem, or by a faulty leakage-current sensor or its circuit.
How to fix it
- 1Check whether the DC power supply and solar panels are OK; check the 'Test data' -> 'diL' value (requires the big LCD); check the leakage-current sensor and its circuit.
- 2Restart the inverter; if the error still exists, contact your installer or Deye service.
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
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
GFCI Failure (Leakage Current) — GFCI_Failure - leakage (residual) current fault.
Cause: The leakage current to ground exceeded the limit, usually due to a PV-side cable ground connection problem.
How to fix it
- 1Check the PV side cable ground connection
- 2Restart the system 2-3 times.
Source: sun-12k-sg01hp3-eu-am2-manual.pdf, p.49 · sun-29.9-30-35-40-50k-sg01hp3-eu-bm3-4-20260224-en-manual.pdf, p.50 · sun-60-70-75-80k-sg02hp3-eu-em6-20260224-en-manual.pdf, p.50
Also applies to:SUN-5K-SG04LP3-EUSUN-6K-SG04LP3-EUSUN-8K-SG04LP3-EUSUN-10K-SG04LP3-EUSUN-12K-SG04LP3-EUSUN-3K-SG05LP3-EU-SM2SUN-4K-SG05LP3-EU-SM2SUN-5K-SG05LP3-EU-SM2+9
What it means
AC Leakage Current Fault — AC leakage current fault - leakage (residual) current fault.
Cause: The leakage current to ground exceeded the limit, usually due to a PV-side cable ground connection problem.
How to fix it
- 1Check the PV side cable ground connection
- 2Restart the system 2-3 times
- 3If the fault still exists, contact us for help.
Source: sun-5-6-8-10-12k-sg04lp3-eu-20260319-en-manual.pdf, p.46 · sun-3-4-5-6-8-10-12k-sg05lp3-eu-sm2-20260319-en-manual.pdf, p.46 · sun-14-15-16-18-20k-sg05lp3-eu-sm2-20260319-en-manual.pdf, p.46
Energy storage systemFault Also applies to:AI-W5.1-5P3-EU-B-ESSAI-W5.1-6P3-EU-B-ESSAI-W5.1-8P3-EU-B-ESSAI-W5.1-10P3-EU-B-ESSAI-W5.1-12P3-EU-B-ESS
What it means
AC leakage current fault — Leakage current fault (GFCI).
Cause: Ground-leakage current exceeded the limit - typically a PV-side cable ground/insulation problem.
How to fix it
- 1Check the PV-side cable ground connection and restart the system 2-3 times.
- 2If the fault still exists, contact Deye for help.
Source: ai-w5-1-b-datasheet.pdf, p.46
Energy storage systemFault Also applies to:GB-SL5K-EUGB-SL6K-EUGB-SL8K-EUGB-SL10K-EUGB-SL12K-EUGB-SL15K-EUGB-SL20K-EUGB-SL Pro 5K-EU+6
What it means
GFCI_Failure — Leakage current fault (GFCI).
Cause: Ground-leakage current exceeded the limit - typically a PV-side cable ground/insulation problem.
How to fix it
- 1Check the PV-side cable ground connection and restart the system 2-3 times.
- 2If the fault still exists, contact Deye for help.
Source: gb-s12k-eu-gb-s15k-eugb-s20k-eu-gb-s15k-eu-gb-s20k-eu-manual.pdf, p.49 · gb-s5k-eu-gb-s20k-eu-datasheet.pdf, p.44
Also applies to:GB-A
What it means
ALARM_ID_SOC_OVER_LEV_2 — High SOC fault.
Cause: The state of charge rose above the allowed upper limit - charging continued past full, usually from wrong charge settings or SOC drift.
How to fix it
- 1Stop charging and let the battery discharge slightly; check the PCS charge cut-off settings.
- 2Contact Deye support if the SOC reading looks wrong.
Source: gb-a-pack6-gb-a4-gb-a10-gb-a16-manual.pdf, p.13