Solar · Error codes · myenergi
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 |
|---|---|
| Severity | Fault — 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
- myenergi Help Centre - eddi Installers > Fault Codes ((4)1 to (4)8) ↗ · Help Centre article · page 30222317260305 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026