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 end insulation error — An insulation error was detected at the DC end. The manual notes this code has hardly ever appeared in the field.
Cause: The insulation at the DC end of the power stage fell below the acceptable level.
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.52 · sun-9k-g02p1-eu-am2-sun-10k-g02p1-eu-am2-sun-10-5k-g02p1-eu-am2-manual.pdf, p.52
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 end insulation error — An insulation error was detected at the DC end.
Cause: The insulation at the DC end of the power stage fell below the acceptable level.
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 end insulation error — Insulation error detected at the DC end.
Cause: The insulation impedance at the DC terminal end fell below the limit.
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 end insulation error — Insulation error detected at the DC end.
Cause: The insulation impedance at the DC terminal end fell below the limit.
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.54 · 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 Insulation Fault (Internal) — DC_Insulation_Fault - internal DC insulation fault.
Cause: The inverter's DC insulation monitoring reported a fault.
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
Temperature sampling fails — A temperature sensor returned an invalid reading.
Cause: An NTC temperature sensor is open-circuit, shorted, or disconnected inside the pack, so the BMS cannot read a valid temperature.
How to fix it
- 1Restart the battery.
- 2If the code persists, the sensor circuit 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_BMU_ADDR_REPEAT — Duplicate BMU address (the manual's description column reads 'the BMU repeatedly fails'; the alarm ID identifies a repeated BMU address).
Cause: Two battery modules (BMUs) are configured with the same address on the internal bus.
How to fix it
- 1Correct the module addressing so every BMU has a unique address, then power-cycle the system.
- 2Contact Deye support if addresses cannot be changed on site.
Source: gb-a-pack6-gb-a4-gb-a10-gb-a16-manual.pdf, p.13