Is your solar system generating less than it should? Let us find the cause.

A solar system can appear operational while quietly losing 10, 20, or even 30 percent of its rated output. Monitoring apps report generation, but they never tell you why output has dropped, which component is at fault, or whether your system is running safely.
Solar fault finding is the process of identifying exactly what is causing underperformance. It goes beyond reading a dashboard and requires on-site inspection, electrical testing, and a working knowledge of how panels, inverters, wiring, and monitoring systems interact.
Here are the most common reasons Melbourne homeowners contact us for solar diagnostics.
● Generation output has dropped compared to the same period last year
● Monitoring app shows intermittent or partial output from specific strings
● Inverter is logging faults but continuing to operate
● The system appears active but electricity bills have not reduced as expected
● One section of the roof array seems to be producing less than the other
● Monitoring connectivity has dropped out and cannot be re-established
● The system passed an earlier inspection but performance has since declined
Solar system diagnostics that involve electrical testing - measuring DC/AC voltages, testing isolators, checking earthing, or accessing the inverter's internal parameters - must be carried out by a Registered Electrical Contractor (REC).
This is not just a legal requirement. It is a safety requirement. DC solar circuits carry live voltage whenever panels are exposed to light, including at the circuit breaker. The risks of untrained fault finding include electric shock, arc flash, and fire.
Enelex holds full REC status. All fault finding work is carried out to AS/NZS 5033 and Victorian electrical safety standards.

If Enelex carries out repair work following a fault finding assessment, the diagnostic fee is credited toward the repair. The quote for commercial system diagnostics depends on the site and system size. All pricing confirmed in writing before work begins. Enelex finds the fault, gives you the report, and fixes it - at a fixed price, no hidden costs.
Why is your solar system not performing up to your expectation? You shouldn’t have to guess that anymore.
Call 03 9309 2319 now. We are available 24 hours.




Remote Monitoring Review
Before attending the site, we review your system's monitoring data, i.e., generation logs, fault history, and output trends to narrow down where the problem is likely to originate. This makes the on-site visit faster and more targeted.
On-Site Solar System Diagnostics
Our licensed electricians carry out hands-on electrical testing across your system, including
● Panel-level output testing using IV curve analysis and thermal imaging where applicable
● String voltage and current measurement to identify underperforming strings
● DC isolator and wiring continuity testing
● Inverter input/output measurement against rated specifications
● Earthing and bonding checks
● Shading impact assessment - trees, new structures, or neighbouring buildings
Inverter Fault Diagnosis
We interrogate your inverter's error log, test its operational parameters, and determine whether the fault is inverter-side, panel-side, or a wiring/connection issue. This distinction matters, misdiagnosis leads to unnecessary inverter replacements that do not fix the underlying problem.
If an inverter fault is confirmed, see our Solar Inverter Repairs and Solar Inverter Replacement pages.



Solar Performance Monitoring Setup & Reconnection
If your monitoring system has dropped out, been misconfigured, or was never set up correctly, we reconnect and reconfigure it. We work with all major solar monitoring platforms, including
● Fronius Solar.web
● SolarEdge monitoring portal
● SMA Sunny Portal
● Enphase Enlighten
● Goodwe SEMS Portal
● Huawei iSolarCloud
● SolarAnalytics
A properly configured solar performance monitoring system means you catch the next fault early, not months later.
Written Fault Report
Every assessment concludes with a written fault finding report covering the fault identified, its cause, its estimated impact on output, and recommended remediation with indicative costs. No verbal-only summaries. No unexplained invoices.

Brunswick, Coburg, Preston, Thornbury, Northcote, Fitzroy North

Bundoora, Macleod, Greensborough, Eltham, Diamond Creek, Watsonia

Doncaster, Templestowe, Manningham, Box Hill, Ringwood

Kew, Hawthorn, Glen Waverley, Knox
We’re here to help. Get in touch for any electrical installations, maintenance or repairs.
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