Last updated: 1 November 2026
1. Warranty period
We warrant that every product we manufacture is free from defects in material and workmanship. The standard warranty runs for 18 months from the date of commissioning, or 24 months from the date of shipment, whichever expires first. The warranty period stated in your purchase contract takes precedence over this page.
2. What the warranty covers
Within the warranty period we will, at our discretion, repair or replace free of charge any product or component that fails because of:
- a defect in the raw material or cast resin used in manufacture;
- a fault in our manufacturing or assembly process;
- a failure to meet the rated parameters stated in the product datasheet, when the product is installed and operated according to that datasheet.
3. What the warranty does not cover
The warranty does not apply to faults caused by:
- installation, wiring or commissioning that does not follow the product datasheet or the applicable IEC standard;
- operation outside the rated voltage, current, frequency or ambient conditions;
- modification, repair or disassembly carried out without our written consent;
- damage in transit after the risk has passed to the buyer, or damage caused by fire, flood, a lightning strike beyond the rated withstand level, theft or vandalism;
- normal wear and tear, and consumable parts.
4. How to file a claim
- Email sales2@nahugroup.com within 30 days of discovering the fault. Include the model, the serial number, the date of commissioning and a description of the problem.
- Send photographs or a short video showing the fault and the installation conditions.
- Our engineering team will assess the claim and reply with a diagnosis within 5 working days.
- If the claim is accepted, we will arrange repair, replacement or credit. Where the fault is confirmed as a manufacturing defect, we bear the freight for the replacement part.
5. Returns
Returns require our prior written authorisation. Please do not ship anything back before you receive a return authorisation number.
- Defective goods — accepted under the warranty terms above.
- Non-defective goods — standard catalogue products in original condition may be returned within 30 days of delivery, subject to a restocking charge. Returns of custom-built or made-to-order equipment are not accepted unless the goods are defective.
- Return freight for non-defective goods is borne by the buyer.
6. Limitation
Our liability under this warranty is limited to repair, replacement or credit for the product itself. It does not extend to indirect or consequential loss, including loss of production, loss of revenue, or the cost of removing and reinstalling equipment. Nothing in this policy limits any right you have under applicable law that cannot be limited by contract.
7. Contact us
Nahu Group (NAHU Electric Technology)
Room A1901, Building 3, No.28, 10th Avenue, Baiyang Sub-district, Qiantang District, Hangzhou, Zhejiang 310000, China
Email: sales2@nahugroup.com
Phone: +86 189 5773 6120
