Solar · Error codes · Fox ESS
Meter Lost FaultFox ESS · H1 G2 single-phase hybrid inverter
Meter Lost Fault on a Fox ESS H1 G2 single-phase hybrid inverter: The communication between meter and Inverter is interrupted
Short answer
On a Fox ESS inverter, Meter Lost Fault means: The communication between meter and Inverter is interrupted. The inverter keeps running.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: The communication between meter and Inverter is interrupted.
Part involved: export meter / CT.
When it shows: No data from meter.
Likely causes:
- Meter RS485/communication cable disconnected or faulty; meter unpowered.
Is it safe?
| Does the inverter stop? | No |
|---|---|
| Severity | Warning |
The inverter keeps running.
Resetting itself: yes.
Manual reset: Check meter communication cable.
What you can check
- Read the full code and message on the inverter screen or in the FoxCloud app and note the date/time for your installer.
- Check the inverter's AC isolator next to the inverter and the solar/battery breaker in the consumer unit are ON (do not reset a breaker that trips again - call your installer).
- Check the Fox meter/CT unit near the consumer unit still has its display lit (look only - do not open the consumer unit).
What the engineer will check
- Check meter comms cable, Modbus address (Meter1=1, Meter2=2) and power supply to meter.
Who to ask for: Qualified electrician / MCS PV installer.
Certification: Battery and hybrid-inverter DC work: installer trained/approved by the manufacturer; electrical work under BS 7671 by a competent person.
What you might notice
Sources
- H1(G2)/AC1(G2) Series User Manual ↗ · V1.0.8 · page 50 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026