What does error W06 mean on a DEYE inverter?

W06 means: CT Not Connected Warning. The CT wires are not connected correctly or are disconnected.

Is error W06 a fault or a warning?

W06 is a warning: the red LED flashes and the unit keeps running. Fix the underlying condition before it escalates.

W06

DEYE inverter error W06

CT Not Connected Warning

Warning — the red LED flashes and the inverter keeps running. Deal with it before it escalates.

SUN SG01HP3/SG02HP3 Hybrid

InverterWarning

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

CT Not Connected Warning — CT_Notconnect_warn - a current transformer (CT) is not detected by the inverter.

Cause: The CT wires are not connected correctly or are disconnected.

How to fix it

Check whether the wires of the CTs are connected correctly.

Source: 037_BManual_SUN-5_6_8_10_12_15_20_25K-SG01HP3-EU-AM2_20260224_en_9ef2717c.pdf, p.48 · 050_BManual_SUN-29.9_30_35_40_50K-SG01HP3-EU-BM3_4_20260224_en_544e1b2f.pdf, p.49 · 062_BManual__SUN-60_70_75_80K-SG02HP3-EU-EM6_20260224_en_38cbc9f6.pdf, p.49

Frequently asked questions

What does error W06 mean on a DEYE inverter?: W06 means: CT Not Connected Warning. The CT wires are not connected correctly or are disconnected.
Is error W06 a fault or a warning?: W06 is a warning: the red LED flashes and the unit keeps running. Fix the underlying condition before it escalates.
How do I clear or fix error W06?: Check whether the wires of the CTs are connected correctly.

Related error codes

Other codes on the SUN SG01HP3/SG02HP3 Hybrid

All SUN SG01HP3/SG02HP3 Hybrid 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.