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Solar Power System Repairs

If your original solar installer and or their warranty providers are no longer trading and your solar PV system isn't working, underperforming, has developed a fault or needs to be moved, refurbished, changed, decommissioned (permenantly or temporarily) then we can help.

Established in May 2007, we are one of the longest serving and most experienced renewable energy companies around, we've carried out all sorts of repairs involving most types and size of solar PV system, we will be happy to help get your system back up and running.

Below we describe some common situations and faults and how they are resolved:

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Repair SMA Inverter

Inverter Faults and Warnings:

The inverter is the most intelligent and hard working part of most solar PV systems and can stop working due to the presence of any number of faults. These could be faults within the inverter itself or as a result of the inverter safely shutting itself down after identifying a discrepency elsewhere in the system such as from the solar panels, the mains or in the integrity of the wiring.

If the display on the inverter (assuming it has one) is still functioning, then the first place to look for a clue as to why the system isn't working correctly can be found by looking on the inverter's display and noting any warnings and or fault codes and then looking up these fault codes in the inverter's manual.

Please feel free to call us if you'd like help in identifying your inverter's make or model number, if there is no display visible, for assistance with locating manuals and or in understanding what any fault codes mean.


Temporary Inverter Faults: Safe Shutdown and Restart

The vast majority of Solar PV Systems installed in the UK (and nearly all of those associated with a Feed in Tariff) will have been installed in such a way that would allow the owner/operator to safely Shutdown and Restart the solar power system without an engineers assistance.

Instructions should be displayed on-site outlining how to do so, often placed either near the inverter or near the consumer unit, sometimes these instructions can be found in the paperwork provided with the solar PV system. If after assessing the situation, it's appropriate and you feel confident that you can do so safely, shutting down and restarting the system is often all that's needed to clear temporary inverter faults.


Inverter Identified Faults

Sometimes inverters shut themselves down as a safety measure after identifying a fault or finding itself in what it assesses to be an unsafe condition to operate in. This could be anything to do with the power system including integrating with the mains power network (the grid), the earthing system, batteries (if connected), related to the solar panels or if when tested, no fault condition exists, a fauly inverter. Working with fault codes and the manuals will often give us a clue as to what to look for but faults like these if they persist will often require an engineer's site visit to diagnose and fix.


Inverter Warranties:

If a fault is found to be within the inverter, most solar PV inverters are provided with a 5 year manufacturers warranty, occasionally longer and sometimes extended. The good news is that even if your original installer is no longer trading, your inverter hardware if purchased within the last 5 years or within it's manufacturer's warranty period, assuming that the manufacturer is still trading, is still likely to be covered by this warranty.

Warranty Claims: Some manufacturers use their own engineers to service warranty claims, some will ask clients to arrange for the testing of the unit to prove the fault and arrange for the return. We can provide as much or as little help as is needed in order to process a manufacturer warranty claim and will be happy to carry out any testing or commissioning work that might be needed.

Out of Warranty Inverter Failures: If the inverter has failed and it is out of it's manufacturer's warranty period then it will either need to be replaced or repaired. We can help with either option and will provide all the information we can to help you decide the best way to proceed.

Solar PV Generation Meter

Solar Generation Meter Not Working

No Display: If the display of the solar generation meter has stopped working than either 1) The generation meter is broken and will need to be replaced 2) There is no power getting to the unit.

Display Works but Doesn't Count: If the display works but doesn't count than either 1) The generation meter is broken and will need to be replaced 2) There is no power getting to the unit to be counted being provided from the solar system.

Generation meter replacements are a relatively inexpensive and common repair but sometimes what appears to be a faulty generation meter can be an indication of faulty or damaged wiring elsewhere. In either case we would provide an engineer to fully inspect and test both the AC and DC sides of the solar power system before making any recomendations.

Fronius Inverter Faults

Solar Systems not generating or not generating enough power

There may be an issue on the DC side of the system which might include inverters, isolators, circuit breakers, combiner boxes, the solar panels and the associated cabling and connectors between them. You should ensure to check visually if everything that you would expect to be is turned 'On' is on. NB: If you find automatic safety devices such as circuit breakers or RCDs are 'Off' then there is likely a very good safety reason for this, leave them 'Off' until the system has been tested.

There may be an issue on the AC side of the system which includes the inverter, any isolators, the generation meter, any consumer units/distribution boards connected to the solar power system, RCDs and circuit breakers and the associated cabling between them. You should ensure to check visually if everything that you would expect to be is turned 'On. NB: If you find automatic safety devices such as circuit breakers or RCDs are 'Off' then there is likely a very good safety reason for this, leave them 'Off' until the system has been tested.

There could be an environmental issue, has there been any changes to the installation area? Has there been any building work carried out nearby? Have trees grown taller and increased the level of shading on the panels? Are the panels excessively dirty?

Assuming a succesful safe shutdown and restart had been carried out, the inverter was not showing any errors and all safety devices such as MCBs and RCD were in operation we would need to provide an engineer to fully test both the AC and DC sides of the solar power system before making any recomendations.


Damaged and Faulty Solar Panels

If any solar panel is damaged or faulty then in most systems (those where panels are wired together in strings) there is a good chance that the solar PV system will see a significant reduction in overall power generation. A damaged solar panel can't always be seen but it can be identified through testing. The ideal fix is to replace the panel with a correctly specified and well sized new one or to rewire in order to exclude the damaged panel.


Not Enough or No DC Power

If the inverter appears to be working correctly but is not registering any or enough DC power then make sure any and all DC Isolators (often grey, rotary style isolators are used) are switched 'On', some inverters also have built in DC Isolator switches, look around and on the underside of the chassis and make sure anything labelled DC Isolator is switched 'On'. If the inverter recognises the AC side of the system but not the DC and everything is turned on then there could be a problem with either the inverter, the panels, the cables or their connectors. Best advice would be to turn any available isolators (AC and DC) 'Off' and get the DC side of the system tested.

Rain on a Solar Roof

Damaged and Leaking Roofs where solar is installed

A poorly designed and installed solar PV system can cause terrible damage to roofs, which over time can allow moisture to enter and further damage the structure of buildings. Cracked tiles, poor flashing work, damaged underlay, battens and rafters, use of incorrect fixings, poor installation methods, there's a lot than can and has gone wrong when installing solar panels onto roofs.

Even if the solar system isn't directly connected to the problems with the roof, having them there can makes things more complicated to resolve.

Where traditional roofers may have concerns about repairing a roof where solar panels are installed, this is work in which we have many years experience in carrying out.

New Roofing with Solar

New Roofs and Roof Renewals

The time when a roof is due a major refurbishment or replacement might also be an opportune time to revisit the solar PV system design.

We would be happy to remove the panels and reinstall them onto the new roof or to design and supply you with a new roof that integrates the solar PV system.


What Our Customers Say:

"We had been let down by a failure on our system,and the manufacturer of the part was no longer trading. We called Glen during the afternoon and he was there in the evening. He examined the system and recommended a replacement manufacterer, promising to come back and fit in the new part once it arrived. We informed Glen of the arrival on a Friday PM, he was there fitting the new part by 10:30 on the following Monday. Of course it worked. That is what you call service, and guess who is looking after all our requirements in the future. Highly recommend this company." - Gill Spencer, Newbury

Recomendation via Facebook

"We were very relieved to find Glen when our Solar Panel system stopped working, as our original supplier had gone out of business. We cannot praise Glen's persistence enough as he thoroughly reviewed the system to identify the faults and repair it, despite the searing heat of last summer. He also talked to Solar Edge and provided fault data to enable us to get a replacement part under warranty. Many thanks Glen for getting us up and running again!" - Jane Pearce, Highworth

Recomendation via Facebook

"Glen was very helpful and very reasonably priced. I would recommend him, and use him again in future if I need any solar work." Venu Jega, Highworth

Review via Google

"Outstanding. Conscientious, thorough, friendly and reasonably priced service. Highly recommended. Made our solar panel battery system safe, correcting the sub-standard work of others. Will always use this trustworthy PV electrician. Even after the work was completed, he studied the manual for our system and assisted with resolving further problems. Thanks Glen." Rob Barnes, Royal Wootton Bassett

Review via Cylex

"Very decent with a helpful attitude and expert in the technical side and reliable too. Had to integrate with our roofers to use their scaffolding before and after their work to take down and reinstall our PV panels. Helpful scheduling. Up and running again to our satisfaction at a decent price." David Ballard, Ramsbury

Recomendation via Facebook

"Our inverter failed and as our installer had gone out of business did not know what to do. Contacted Glen who was brilliant. Came out checked the failure dealt with the manufacturer and all aspects of the warranty claim.New inverter received under warranty and Glen came out and fitted the new one straightaway. Superb service from a very professional and helpful person. Highly recommend this company." Martin Brailey, Wokingham

Recomendation via Facebook

"My inverter failed and Glen very quickly got my system up and running again. He was very professional but explained everything to me. Many thanks Glen and I've already recommended him." Di Foxwell, Wroughton

Recomendation via E-Mail

"New meter doing the business nicely. Good job, great service and friendly with it. Our thanks." Richard Illsley, Marlborough

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