Solar PV Fault Finding Across Cumbria
When a solar array stops performing, the loss often shows up only as a slowly rising electricity bill. Our free service puts Cumbria households in touch with independent engineers who diagnose and repair PV systems, whoever fitted the system in the first place.
Many older arrays in Cumbria were fitted by companies that have since stopped trading, which leaves owners looking for someone new to look after them.
Typical Solar Problems We Get Asked About
- Overheated connectors on the roof
- Failed roof-mounted DC isolators letting in water
- Physically damaged or degraded panels
- Earth faults that trip the inverter
- Wildlife damage to wiring under the array
- Loose rails, clamps or slipped tiles after high winds
Sometimes the panels are fine and the inverter is the problem, in which case a replacement may be the answer rather than a repair.
What Happens When an Engineer Visits
An engineer starts by checking the inverter's error log and your monitoring data, before isolating the panels and testing each string in turn. String voltage, current and insulation resistance readings show where the fault lies, allowing a clear price for the fix. If roof access is needed, the engineer will explain whether it can be done from ladders, a roof ladder or needs scaffolding.
Solar Fault Repair Prices Across Cumbria
| Repair | Typical cost |
|---|---|
| Diagnostic visit and testing | £150 – £300 |
| Isolator or AC-side repair, no roof access | £150 – £400 |
| Connector or cable repair with roof access | £300 – £700 |
| Panel replacement including scaffolding | £700 – £1,200+ |
Access equipment can account for much of the price when the fault is on the roof, so it makes sense to combine repairs with cleaning or bird-proofing where possible.
Repairs, Planning and Safety in Cumbria
Like-for-like repairs to an existing solar system do not normally need planning permission. Owners of listed buildings should check first if the work alters how the array looks. Planning guidance is available from Cumberland/Westmorland & Furness (unitary). Any electrical work should be certified by a qualified electrician.
Choosing a Solar Repair Engineer in Cumbria
- Do they take on other installers' systems?
- Is the diagnostic fee fixed and deducted from the repair?
- What happens if your panel model is discontinued?
- Is scaffolding included in the repair price?
- Is the repair certified?
A Useful Question for Your Specialist
Fault-finding starts with safe isolation and a review of inverter logs and generation records. An engineer may then test strings, connectors, isolators and cabling, inspect panels and mounting from safe access, and explain whether a repair, component replacement or warranty claim is the sensible next step.
A clear written scope helps you compare what is included before choosing a contractor.
Frequently Asked Questions
Here are some practical answers to common questions about this work.
Can you find someone to repair a system fitted by a company that has closed?
Yes. Many engineers in our network carry out fault-finding and repairs on systems installed by other companies, including those that are no longer trading.
How do I know if my solar panels are faulty?
Check your generation meter or monitoring app on a bright day. If generation has stopped or is far lower than in previous years, there is likely a fault somewhere in the system.
Are solar repairs covered by warranty?
Some faults may be covered by the manufacturer's product warranty or the original installer's workmanship guarantee. Check your handover documents before booking a paid repair.
Do repair engineers cover all of Cumbria?
Our network includes solar repair specialists covering towns and villages throughout Cumbria. Add your postcode to the form and we will search for repair engineers who travel to you.