The Office for Product Safety and Standards published a product safety report on 23 April 2026 covering the Sigenergy SigenStor Energy Controller with quick connect AC plug, which it says presents a risk of burns1. The notification number is 2604-0013 and the risk level is listed as low1.
The report identifies the affected models as 8.0kW, 10.0kW and 12.0kW connectors for single phase supply, with part numbers 1104002700, 1104002800 and 11040029001. The product is described as an AC plug for an energy control unit, branded Sigenergy, with country of origin China, and is categorised as electrical appliances and equipment, adaptors1.
The hazard is set out as follows:
"In rare cases, the quick connect AC plug may present a risk of overheating and burns in cases where it has been installed not in accordance with the manufacturer's instructions."
The corrective action is a modification programme rather than a full recall:
"The manufacturer has initiated a modification programme to warn customers of the risk and arrange for on-site inspection and repair of affected products."
Owners of affected products who need further information are directed to contact sigenservice.uk@sigenergy.com1. The report states that contact is not needed if the EC controller was installed and commissioned after February 2026, as the product is unaffected, or if the product has already been replaced1.
| Item | Detail |
|---|---|
| Models | 8.0kW, 10.0kW, 12.0kW single phase connectors |
| Part numbers | 1104002700, 1104002800, 1104002900 |
| Hazard | Overheating and burns where installed not in accordance with instructions |
| Action | Modification programme: warning, on-site inspection and repair |
| Notified by | Office for Product Safety and Standards |
| Notification number | 2604-0013 |
Why it matters for households
The component named is the AC plug that connects an energy control unit to the home's electrical supply, so the report concerns the point where a home energy system meets mains wiring. The hazard is tied specifically to installation that departs from the manufacturer's instructions, which places the condition on how the unit was fitted rather than on the product in normal use1.
For a household, the practical effect is that the safety of this connection depends on the quality of the original installation and on the inspection and repair the manufacturer has said it will carry out on site1. The report does not state how many units are affected, how households are identified, or what the inspection involves; those details have not been reported1. The risk level is recorded as low1.
The report sits alongside the wider framework of product markings and standards that apply to equipment sold in the UK, and households tracking similar notices can find them in the home energy product recalls and safety notices section. How such products are assessed against declared performance is covered in how energy products are tested.
What happens next
The manufacturer has begun a modification programme to warn customers and arrange on-site inspection and repair of affected products1. No completion date, timescale or number of affected units is given in the report1.