When the power grid is in phase imbalance, there are high-power mechanical equipment nearby, or the line contact is poor, the voltage may be too high, too low, or too high or too low for a moment, exceeding or falling below the power input range, causing damage to the power supply.

Damage to the non-isolated power supply will generally not burn the lamp bead board. Only when the positive and negative poles are broken down to form a circuit will the lamp bead board be damaged.

Interference from the on-site environment may cause occasional light flickering. It is recommended to use a dual-stage screen-free power supply in an environment with interference.

The warranty period for different power supply systems is two years, three years, and five years respectively. The cause can only be determined after testing. In special circumstances, the salesperson can submit an application for replenishment before returning the product.

For sporadic defective products, customers can purchase power supplies first to replace them, and return the defective products after replacement. In special cases, sales can submit an application for replenishment first and then return the products.

Product overvoltage protection. During power matching, the lamp board voltage is close to or exceeds the upper limit of the power supply voltage. Replace a more suitable driver to match.

The light is on normally but flickers irregularly. First, determine which of our products is being used (most likely a non-certified product). Find out if there are any large electrical devices or signal towers around the customer that cause interference. We recommend that the customer replace the product with a certified series product.

The normal working hours for indoor products are 8-10 hours, and for outdoor products 24 hours.

The ambient temperature is too high, the grid voltage is abnormal (too high, too low), lightning surge, soaking in water for a long time, etc.