Solar · Error codes
Why is one Enphase microinverter showing a solid red light?
Short answer
A solid red status LED on an Enphase IQ8 means 'DC Resistance Low - Power Off': insulation between the panel wiring and earth fell below about 7 kΩ, so that microinverter stopped; the rest keeps working. The fault stays latched until your installer clears it remotely through the Enphase Installer Platform; if it returns, the panel or microinverter needs replacing.
Last checked 24 September 2026 · 1 source
In more detail
- Causes: module insulation defect, damaged wiring/connectors, moisture ingress.
- Flashing orange = grid OK but no gateway communication; flashing red = grid absent/out of spec.
The facts, dated
- 01IQ8 DC Resistance Low trips below ~7 kOhm PV-to-earth — 7 kOhm
manufacturer · n/a · checked 24 September 2026 · midsummerwholesale.co.uk
Sources
- midsummerwholesale.co.uk — midsummerwholesale.co.uk/pdfs/enphase-iq8-microinverters-installation-and-operat…
Last checked: 24 September 2026