30Fault

DEYE inverter error 30 (F030)

AC main contactor failure

Also displayed as F030 / F30 on some models.

Fault — the inverter cuts its output and the red LED stays solid until the fault is cleared.

The exact meaning depends on your model:

SUN G01P3-EU-BM8 Series

InverterFault

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

AC main contactor failure — The main AC relay/contactor failed to operate.

Cause: The main AC relay failed to close correctly: a relay fault, a relay driver circuit fault, or software that is not suitable for this inverter (old inverters have no relay detection function).

How to fix it

  1. Check the relays and the AC voltage of the relays
  2. Check the relay driver circuit
  3. Check if the software is not suitable for this inverter (old inverters have no relay detection function)
  4. Restart the inverter; if the fault 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.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

SUN G03/G01P3-AM8 Series

InverterFault

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 main contactor failure — The main AC relay/contactor failed to operate.

Cause: The main AC relay failed to close correctly: a relay fault, a relay driver circuit fault, or software that is not suitable for this inverter (old inverters have no relay detection function).

How to fix it

  1. Check the relays and the AC voltage of the relays
  2. Check the relay driver circuit
  3. Check if the software is not suitable for this inverter (old inverters have no relay detection function)
  4. Restart the inverter; if the fault 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.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

SUN G04/G05/G06 3-Phase

InverterFault

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+71

What it means

AC main contactor failure — The AC main contactor failed to operate.

Cause: Faulty relays or missing AC voltage across them, a relay driver-circuit fault, or software not suitable for this inverter (old inverters have no relay detection function).

How to fix it

  1. Check the relays and the AC voltage of the relays; check the relay driver circuit; check whether the software is suitable for this inverter.
  2. Restart the inverter; if the fault still exists, contact your installer or Deye service.

Source: sun-6k-g06-lv-p1-manual.pdf, p.57 · 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

SUN SG01HP3/SG02HP3 Hybrid

InverterFault

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

AC Main Contactor Fault — AC_MainContactor_Fault - the main AC contactor reported a fault.

Cause: The main AC contactor of the inverter failed its check or did not switch correctly.

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

RW Spring Series Battery

BatteryFault

Also applies to:RW-L2.5ARW-L5.1RW-L10.2RW-F16SE-F5SE-F5 PlusSE-F5 ProSE-F12+7

What it means

Internal communication fails — Communication between internal BMS boards/modules was lost.

Cause: The internal data link between BMS boards or between the BMS and internal modules dropped - internal wiring or board fault.

How to fix it

  1. Restart the battery.
  2. If the code persists, 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

GB-A HV Battery

BatteryFault

Also applies to:GB-A

What it means

ALARM_ID_PCS_CAN_COMM_FAIL — The PCS CAN communication fails.

Cause: The CAN link between the battery COM port and the PCS dropped - loose or miswired cable, wrong pinout, or wrong protocol selection on the PCS.

How to fix it

  1. Check the communication cable and pin assignment between the battery COM port and the PCS, and verify the PCS battery-protocol setting.
  2. Restart both units.

Source: gb-a-pack6-gb-a4-gb-a10-gb-a16-manual.pdf, p.13

Frequently asked questions

What does error 30 mean on a DEYE inverter?
It depends on the model — 10 devices use code 30. On the SUN G01P3-EU-BM8 Series it means: AC main contactor failure. The card for each model on this page gives its exact meaning and fix.
Is error 30 a fault or a warning?
30 is a fault code: the inverter cuts its output and the red LED stays solid until it is cleared.
How do I clear or fix error 30?
1. Check the relays and the AC voltage of the relays. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the SUN G01P3-EU-BM8 Series

All SUN G01P3-EU-BM8 Series codes All SUN G02P1-EU Series codes

Other codes on the SUN G03/G01P3-AM8 Series

All SUN G03/G01P3-AM8 Series codes

Other codes on the SUN G04/G05/G06 3-Phase

All SUN G04/G05/G06 3-Phase codes All SUN G04P1/G05P1 Series codes All SUN G06P3-EU Series codes

Other codes on the SUN SG01HP3/SG02HP3 Hybrid

All SUN SG01HP3/SG02HP3 Hybrid codes

Other codes on the RW Spring Series Battery

All RW Spring Series Battery codes All SE Spring Series Battery codes

Other codes on the GB-A HV Battery

All GB-A HV Battery codes

Prefer the full written guide? Read the complete DEYE inverter error-code guide

Compiled from official DEYE user manuals. Always consult your device manual and a qualified technician before performing repairs.