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
AC leakage current is transient over current — The AC leakage current rose above 30 mA suddenly.
Cause: The leakage current jumped above 30 mA suddenly, from a real transient 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 (checking test data requires the big LCD)
- 2Restart the inverter; if the fault still exists, contact your installer or Deye service.
Source: 041_BManual_SUN-120_125_130_135_136K-G01P3-EU-BM8_20251021_en_a2166559.pdf, p.62
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
AC leakage current is transient over current — The AC leakage current rose above the transient protection threshold suddenly.
Cause: The leakage current suddenly jumped above the transient protection threshold, from a real transient 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 (checking test data requires the big LCD)
- 2Restart the inverter; if the fault still exists, contact your installer or Deye service.
Source: 065_BManual_SUN-7_7.5_8K-G02P1-EU-AM2_20260625_en_4466f08b.pdf, p.51 · 032_BManual_SUN-9_10_10.5K-G02P1-EU-AM2_20260625_en_df0f2106.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
AC leakage current is transient over current — The AC leakage current rose above 30 mA suddenly.
Cause: The leakage current jumped above 30 mA suddenly, from a real transient 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 (checking test data requires the big LCD)
- 2Restart the inverter; if the fault still exists, contact your installer.
Source: 033_BManual_SUN-70_75_80_90_100_110K-G03_20260702_en_a9db1e1b.pdf, p.62 · 042_BManual_SUN-120_125_130_135_136K-G01P3-EU-AM8_20260702_en_05f936e3.pdf, p.61 · 060_BManual_SUN-60_70_75K-G01P3-EU-AM8-LV_20260701_en_f559aeec.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+48
What it means
AC leakage current is transient over current — A sudden (transient) jump of leakage current above the limit was detected.
Cause: The leakage current rose above 30 mA suddenly, from 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 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 fault still exists, contact your installer or Deye service.
Source: 063_BManual_SUN-6K-G06-LV-P1_20250923_en_30a96699.pdf, p.57 · 036_BManual_SUN-3_4_5_6_7_8_9_10_12_15K-G06P3-EU-BM2_20250506_en_0eb78440.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+15
What it means
AC leakage current is transient over current — A sudden (transient) jump of leakage current above the limit was detected.
Cause: The leakage current rose above the transient limit suddenly, from 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 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 fault still exists, contact your installer or Deye service.
Source: 031_BManual_SUN-1_1.5_2_2.2_2.5_2.7_3_3.3_3.6_4K-G04P1-EU-AM1_20260624_en_15adc00c.pdf, p.53
Also applies to:SUN-3.6K-SG05LP1-EU-SM2-PSUN-5K-SG05LP1-EU-SM2-PSUN-6K-SG05LP1-EU-SM2-PSUN-7K-SG05LP1-EU-SM2-PSUN-7.6K-SG05LP1-EU-SM2-PSUN-8K-SG05LP1-EU-SM2-PSUN-10K-SG05LP1-EU-SM2-PSUN-7.6K-SG01LP1-EU+21
What it means
AC leakage current is transient over current — Leakage current fault: the AC leakage (residual) current is transiently over the limit.
Cause: Excess leakage current on the AC side, typically from a poor PV side cable ground connection.
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: 039_BManual_SUN-3.6_5_6_7_7.6_8_10K-SG05LP1-EU-SM2-P_20260428_en_70c401a6.pdf, p.49 · 043_BManual_SUN-12_14_16K-SG01LP1-EU_20260519_en_703e15ac.pdf, p.45 · 052_BManual_SUN-_3.6-6_K-OG01LP1-EU-AM2_20260406_en_dc31b173.pdf, p.45 · +4 more official manuals
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
Leakage Transient Overcurrent — Tz_GFCI_OC_Fault - transient overcurrent of the leakage (residual) current.
Cause: The leakage current spiked beyond the transient 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: 037_BManual_SUN-5_6_8_10_12_15_20_25K-SG01HP3-EU-AM2_20260224_en_9ef2717c.pdf, p.50 · 050_BManual_SUN-29.9_30_35_40_50K-SG01HP3-EU-BM3_4_20260224_en_544e1b2f.pdf, p.51 · 062_BManual__SUN-60_70_75_80K-SG02HP3-EU-EM6_20260224_en_38cbc9f6.pdf, p.51
Also applies to:SUN-5K-SG02LP2-US-AM2SUN-6K-SG02LP2-US-AM2SUN-7.6K-SG02LP2-US-AM2SUN-8K-SG02LP2-US-AM2SUN-10K-SG02LP2-US-AM3SUN-12K-SG02LP2-US-AM3
What it means
AC Leakage Transient Overcurrent — AC leakage current is transient over current - leakage (residual) current fault.
Cause: The leakage current spiked beyond the transient 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: 059_BManual_SUN-5_6_7.6_8_10_12K-SG02LP2-US-AM2_AM3_20260406_en_fb6a30c7.pdf, p.54
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
Leakage Transient Overcurrent — Tz_GFCI_OC - the leakage (residual) current is in transient overcurrent.
Cause: The leakage current spiked beyond the transient 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: 038_BManual_SUN-5_6_8_10_12K-SG04LP3-EU_20260319_en_081932c1.pdf, p.46 · 040_BManual_SUN-3_4_5_6_8_10_12K-SG05LP3-EU-SM2_20260319_en_b0183b7d.pdf, p.46 · 044_BManual_SUN-14_15_16_18_20K-SG05LP3-EU-SM2_20260319_en_ac7cdbd1.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
Tz_GFCI_OC transient over current — Leakage current fault (transient GFCI over-current).
Cause: A transient ground-leakage over-current was detected - 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: 002_Download_4e90fe7a.pdf, p.47
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
Tz_GFCI_OC_Fault — Leakage current fault (transient GFCI over-current).
Cause: A transient ground-leakage over-current was detected - 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: 081_deye_gb_sl_pro_user_manual_46fa941a.pdf, p.50 · 010_Download_cc05df18.pdf, p.45
Also applies to:GB-A
What it means
ALARM_ID_HEAT_RELAY_ADHESION — The heating relay contacts are stuck ('glued').
Cause: The heating relay contacts are welded closed, so the heating film can no longer be switched off reliably.
How to fix it
Switch the battery off to prevent uncontrolled heating and contact Deye support.
Source: 008_deye_ess_user_manual_gb_a_jpnen_v02_20250829_3fea617e.pdf, p.13