What Happens in a Solar Panel Service? A Guide for Bournemouth & Poole Homes

If you have solar panels on a home in Bournemouth, Poole or Ferndown, the chances are they went on the roof, started generating, and haven’t been looked at since. That’s normal, but it’s also how small faults quietly cost you output. So what actually happens during a proper service? Here’s a plain-English walkthrough from our NAPIT-registered electricians.

Why a solar service is more than a quick clean

Washing the panels is only the visible part. A genuine solar panel servicing in Dorset visit looks at the whole system: the panels, the cabling, the inverter, the isolators and the electrical protection that ties it into your home. Most of the problems we find are not on the roof glass at all.

What a solar panel service should include

1. Visual inspection of the array

We check for cracked or delaminated panels, discolouration, hot-spot marks, loose or corroded mounting hardware and anything that has changed since installation, such as new shading from a growing tree or an extension next door. Coastal air around Bournemouth and Poole can be hard on fixings, so these are worth a look.

2. Wiring, connectors and isolators

DC cabling and connectors are exposed to sun, wind and rain for decades. We look for chafed cable, loose or damaged connectors, water ingress and failing isolators. This is the part of a system where a hidden fault can become a safety issue, which is why it should only ever be inspected by a qualified electrician rather than by guesswork from the ground.

3. Inverter checks

The inverter is usually the first component to need attention. We check for error codes and fault history, ventilation and heat, display and monitoring connection, and whether it is performing as expected against what the panels are producing.

4. Electrical safety and protection

Solar connects to your consumer unit, so the protective devices and earthing matter. If your installation is old or has been added to over the years, an EICR electrical safety certificate gives a clear picture of the wider installation, not just the solar side.

5. Performance review

We compare actual generation with what a system of your size should realistically produce for the time of year. A gradual unexplained drop is often the first sign of a fault, so it’s worth keeping an eye on your monitoring app between visits.

Signs you shouldn’t wait for the next service

• Generation noticeably lower than the same time last year
• An inverter showing an error, flashing light or no display
• Visible damage, slipped panels or birds nesting under the array
• A burning smell, buzzing or tripping electrics linked to the system

If you notice any of these, switch off only if it is safe and straightforward to do so, and call a qualified electrician. Please don’t go on the roof or open up the inverter or isolators yourself. Our guide to common solar panel faults and repairs in Dorset explains what usually causes a drop in output.

How often should you book a service?

For most homes a check every year or two is sensible, and sooner if output falls or the system is a few years old with no service history. We cover cleaning and timing in more detail in how often solar panels should be cleaned and serviced.

Local solar servicing in Bournemouth, Poole and Dorset

We look after solar systems across Bournemouth, Poole, Ferndown, Ringwood and the wider Dorset area. If you’d like a straight answer on what your system needs, take a look at our solar maintenance service or get in touch and we’ll talk you through it, no pressure and no jargon.