Correct the root cause before fitting another driver. Improve loose or undersized conductors, incompatible controls, overloaded strings, poor heat transfer, water entry, blocked drainage, inadequate surge protection, or incorrect enclosure design where evidence supports the change.<\/p>\n
Create a commissioning record containing input voltage, output voltage or current, load, control state, cable length, ambient and enclosure temperature, and branch identification. Future technicians can compare new measurements with this baseline instead of replacing components by guesswork.<\/p>\n
WEHO was founded in 2007 and offers 1000+ models. Confirmed company quality facts include 100% high-temperature full-load testing and a 99.7% yield. Applicable certifications listed by WEHO are ISO9001, CE, RoHS, FCC, and CCC; confirm the documents required for the exact model and destination market.<\/p>\n
<\/span>FAQs<\/span><\/h2>\n\n
<\/span>Why is my LED driver not producing output voltage?<\/span><\/h3>\nPossible causes include missing input power, an open fuse or breaker, incorrect control wiring, protection shutdown, a disconnected load, or an internal failure. Isolate power and follow the manufacturer’s approved test procedure before taking measurements.<\/p>\n
<\/span>Can an LED driver shut down because the load is too small or too large?<\/span><\/h3>\nYes. A driver may require a defined load range, and overload, short circuit, or an incompatible LED string can trigger protection. Compare the connected load with the exact model’s documented current, voltage, and power limits.<\/p>\n
<\/span>Why does an LED driver work briefly and then turn off?<\/span><\/h3>\nIntermittent operation can result from thermal protection, overload, unstable input voltage, poor connections, or a control signal that changes state. Record input, output, load current, temperature, and timing when the shutdown occurs.<\/p>\n
<\/span>Can a dimmer make a working LED driver appear faulty?<\/span><\/h3>\nYes. An incompatible dimming method, missing control reference, reversed control polarity, or incorrect dimmer range can keep the output off or cause flicker. Test only according to the driver’s documented control interface.<\/p>\n
<\/span>Should I increase the output voltage when LEDs are dim?<\/span><\/h3>\nNot until the cause is known. Dim output may come from voltage drop, current limiting, excessive load, poor connections, or the wrong driver type. Raising voltage without confirming the LED rating can damage the load.<\/p>\n
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