Inverter faults & error codes
Zero output, warning lights, error codes on the display. Most inverter faults have a specific cause — and a specific fix. We match you to engineers who specialise in your inverter brand and model.
- ✓Error code diagnosis — what the code actually means and what to do
- ✓Grid connection and communication faults
- ✓Repair vs replacement — honest assessment before any spend
- ✓All major brands — Solis, SolarEdge, Fronius, Growatt, Huawei, Ginlong
35V imbalance — panel or connection fault on String B
Panels not generating properly
A drop in kWh output — or one string underperforming — usually points to a specific panel, connection, or shading problem. String voltage testing identifies the exact source without guessing.
- ✓String voltage testing — isolates the underperforming section precisely
- ✓Panel inspection — cracks, delamination, soiling, cell failure
- ✓DC connection and cabling check throughout
- ✓Optimiser and micro-inverter assessment where fitted
Battery storage issues
Not charging, draining too fast, BMS errors, or the app showing a fault. Battery systems have specific failure modes — the engineer needs to understand storage, not just panels.
- ✓BMS error diagnosis and reconfiguration
- ✓Charge/discharge cycle analysis from monitoring data
- ✓Cell degradation and capacity testing
- ✓GivEnergy, Tesla Powerwall, Pylontech, Sunsynk, Solax specialists
Battery management error — not charging
Monitoring offline or readings wrong
App disconnected, generation data missing, export readings wrong. Monitoring problems often mask underlying system faults — and they affect your Smart Export Guarantee payments.
- ✓Datalogger and WiFi connectivity diagnosis
- ✓Export meter and CT clamp verification
- ✓SEG payment accuracy check
- ✓Platform reconfiguration — SolarEdge, Solis Cloud, GivEnergy, Solax
Physical damage
Storm damage, impact cracks, panel fractures, or mounting system failure. Physical damage can create live electrical hazards. Assessment needs to happen before the system is used again.
- ✓Safe isolation and hazard assessment first
- ✓Full structural and electrical damage report
- ✓Insurance-suitable documentation provided
- ✓Panel replacement, re-mounting, full recommission
System isolated — do not use
Cracked panels carry full DC voltage. Contact a specialist before switching back on.
Annual servicing & maintenance
Most solar faults are preventable. An annual check covers connections, fixings, inverter health, monitoring accuracy and battery condition — before small issues become expensive ones.
Some home insurance policies require evidence of regular maintenance for solar systems. We can match you to engineers who provide certification.
See maintenance services →