Case Study — Basingstoke, Hampshire
Solar PV Fault Finding and SolarEdge Optimiser Replacement in Basingstoke
Project Overview
A homeowner in Basingstoke contacted Omni3 after their SolarEdge solar PV system had stopped generating electricity correctly. The system had previously been operating normally but was now producing significantly reduced output, affecting the property's renewable energy generation and financial savings.
Our task was to diagnose the fault, identify the root cause and restore the system to full operation.
The Challenge
Initial investigation revealed that the SolarEdge inverter was only detecting a portion of the optimisers installed on the roof. Several optimisers were reporting abnormal voltages, while others were not being detected by the inverter during the pairing process.
The system consisted of a SolarEdge inverter and multiple panel-level power optimisers. Due to the way SolarEdge systems operate, a single failed optimiser can affect communication and performance across the string — making accurate fault finding critical before any parts are replaced.
Our Solution
Omni3 carried out a structured fault-finding process to systematically isolate the cause before any unnecessary parts were replaced. This included:
- •SolarEdge inverter diagnostics
- •Optimiser communication checks
- •Individual optimiser voltage testing
- •Solar panel open-circuit voltage testing
- •String continuity verification
- •Optimiser pairing and commissioning
During testing, multiple faulty optimisers were identified. These units were removed and replaced with compatible SolarEdge optimisers. Following replacement, the system was re-paired and fully recommissioned.
Results
- ✓Faulty SolarEdge optimisers were successfully replaced
- ✓The inverter was able to detect all operational devices
- ✓Solar generation was fully restored
- ✓The homeowner avoided the unnecessary expense of replacing the inverter or solar panels
- ✓The system returned to normal operation
Customer Benefits
Restored solar generation
Full energy production resumed after repair.
Increased renewable savings
System back to generating free electricity for the household.
Extended system lifespan
Existing installation preserved — no major replacement required.
Cost-effective repair
Targeted optimiser replacement avoided a far more expensive inverter or panel replacement.
Solar PV Repairs in Basingstoke
Omni3 provides professional solar PV fault finding, SolarEdge optimiser replacement, inverter diagnostics, solar maintenance and renewable energy services across Basingstoke, Hampshire and the surrounding areas.
SolarEdge systems are widely installed across residential properties throughout Hampshire. While SolarEdge inverters and optimisers are reliable, faults can develop over time — particularly with optimisers on older installations. A structured diagnostic approach, rather than a blanket component replacement, is the most cost-effective way to restore system performance.
If your solar panel system is underperforming, reporting inverter faults or showing reduced generation in the monitoring app, the cause is often a failed optimiser or communication issue rather than a panel or inverter failure. Early fault finding avoids unnecessary costs and gets your system back to generating as quickly as possible.
Solar System Underperforming?
If your solar panels are generating less than expected or your inverter is reporting faults, contact Omni3. We diagnose and repair SolarEdge, GivEnergy, SolarX and other systems across Hampshire, Sussex and the South East.