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4-6_4-7myenergi · eddi solar immersion diverter

4-6_4-7 on a myenergi eddi solar immersion diverter: Over Voltage (>253 V) / Under Voltage

Short answer

On a myenergi inverter, 4-6_4-7 means: Over Voltage (>253 V) / Under Voltage. The inverter keeps running with some functions stopped.

Reviewed 24 September 2026 · 1 source

What it means

The manual says: Over Voltage (>253 V) / Under Voltage.

Likely causes:

  • AC supply voltage out of range (solar export can raise it).

Is it safe?

Does the inverter stop?Partly
SeverityFault — clears by itself when the condition goes

The inverter keeps running with some functions stopped.

Resetting itself: when voltage in range.

Manual reset: Reboot device from menu or via supply breaker.

What you can check

  • Read the fault on the eddi screen. Check the eddi supply breaker is ON. Persistent high voltage is a DNO matter.

What the engineer will check

  • Measure voltage at SUPPLY terminals.

Who to ask for: Electrician / plumber-electrician for immersion circuits.

Certification: Competent electrician (BS 7671); immersion heater work to Part P.

What you might notice

Sources

A code explains what the controller detected, not a confirmed root cause.

Reviewed: 24 September 2026