Frequently Asked Questions

Call us on 024 7767 5575. For LED and lighting queries email sales@ledison-led-lights.co.uk. For solar, off-grid, battery, inverter or power queries email sales@voltacon.com. Sending to the right address means your question reaches the team that knows the product.

Our warehouse and office is at Unit 5B Paragon Way, Exhall, Coventry CV7 9QS. This is also our returns and collection address.

Delivery is worked out from what is actually in your basket rather than a flat fee, so a box of downlights does not pay pallet money. The exact figure appears at checkout before you pay. Small items go out by courier and arrive within 3 to 5 working days to most mainland UK addresses. Panels, batteries and bulk lighting travel by pallet freight instead, typically 2 to 5 working days, and the freight company contacts you directly to arrange a date. Starting prices run from £3.99 for cable, connectors and small parts up to £125.00 for complete off-grid and storage systems. The full list, along with Northern Ireland, the islands and international rates, is on our delivery information page.

Consumers have 30 days to return an item. After that window a 15% restocking fee applies. This 30-day right is a consumer protection and does not apply to business or trade customers, since distance-selling rights are for consumers only; trade returns are agreed case by case at our discretion.

Contact us and we will arrange collection. Please do not attempt to post large items such as panels or batteries back yourself. If an item is returned as faulty but found to be working on inspection, a £30 charge applies.

Once a return is received and checked, refunds are processed within 1 to 5 working days. Our liability is limited to the price of the goods.

Yes. Pricing is tiered by volume and discussed on application, so get in touch with details of what you need. Full details are on our trade accounts page.

Since 2011. We are certified to ISO9001 and ISO14001, and our lighting and power products have a history of supplying the Royal Navy and the wider marine industry.

The whole LED lighting range carries a 5 year warranty. It applies across the range rather than to tubes or a subset of products. Full terms are on the warranty page.

Yes, LED leasing is available and quoted per project. Installation is carried out by NICEIC approved installers.

Yes. We are a member of the Recolight compliance scheme, which covers lamps and luminaires and offers free collection and recycling. The detail is on our WEEE and environmental page.

Solar and power products carry the warranty stated on the individual product listing, as this varies by item. Inverter warranty terms, including the extended options, are set out on the warranty page.

This is a warning, not a fault. It means the battery is fully charged at the optimised voltage, and it only appears with Pylontech batteries such as the US2000. No action is needed.

Error 60 appears when power flows back into the inverter, usually because a motor or pump connected to the output is acting as a generator (for example, when braking). The inverter's current sensor detects this reverse flow and raises the error.

Error 08 means the generator has spiked an over-voltage at the AC input, often because the generator is undersized for the inverter. Disconnect the AC input and run on solar and battery only. If the error clears, check the generator's parameters and fit the correct surge protection device at the AC input. If it persists after that, contact us to arrange a repair, as the main board is likely damaged.

On the 5kW 48V units error 57 normally sits with the control board rather than the main board, so the repair is smaller than the error code suggests. Send us the serial number and we will confirm the part before anything is stripped down.

On the 12V MPPT inverter chargers both codes point at hardware on the main board, either the H-bridge or the switch mode power supply. A replacement main board is normally the only fix. Send us the model and serial number and we will tell you whether a repair is worth it or whether replacing the unit works out better.

Error 61 means the battery and inverter are not communicating and the BMS has not been set up correctly. Common causes are an incompatible battery, the wrong BMS cable, incorrect battery settings in the inverter menu, or the dip switches on the master battery not being set correctly. Use the BMS cable supplied with the inverter rather than the one supplied with the battery, set the battery type correctly in the inverter menu, and make sure only the master battery has dip switch 1 set to on. Contact our technical team if you are not confident making these changes yourself.

If the cabling, dip switches and battery profile all check out and the inverter still will not talk to the battery, the inverter's processor may need reflashing with current firmware from the manufacturer. This is not something to attempt blind, because the wrong file can leave the unit unusable. Call us with the model and firmware version and we will confirm the correct file or arrange for the unit to come in.

Use the inverter's Pylontech battery profile rather than a generic lead acid one, with the charge voltage around 53.2V and the charge current matched to how many packs you have. The menu numbers move between models and firmware versions, so rather than publish a list that may not match your unit, call us with the model and we will read the correct settings out to you.

For a manually configured US2000 bank the usual figures are 25A of charge current per pack, battery type set to user defined, cut-off around 48V, return to grid around 51V, bulk charge 53.2V and low battery around 47.5V. Check these against the manual that came with your inverter, as the program numbers differ between firmware versions.

Yes, Pylontech US2000 and US3000 batteries can be used together in parallel. The battery's own BMS auto-adjusts charge current and voltage to protect against overcharging or overheating.

Yes. When paralleling inverters onto a shared battery bank, one inverter needs to be configured as master and the other as slave. If you are using Pylontech batteries, the inverter's BMS port handles this communication.

Yes. In the shared supply mode the output can be fed from solar and the grid together, which is useful when a load draws more than the array can deliver on its own. The trade-off is that the batteries will not charge while the system is running that way.

Yes, off-grid inverters can be programmed to charge from the grid during specific overnight hours, for example to take advantage of a cheap night tariff. This does not need any special licence or paperwork, since the system does not feed power back to the grid. Contact our technical team for the specific menu settings for your inverter model, as these vary by model and firmware version.

On inverters with a built-in AC charger timer, opening the output source or charger source menus clears the timer back to 00:00. Set your charging window last, after any other menu changes, and it will stay put.