Opener light does not turn on during operation or stays on constantly.

Safety: Turn off power before changing bulbs.

• 1. Replace bulb: Install a new bulb of the correct wattage and type recommended by Sommer (often LED or low‑wattage incandescent).
• 2. Check socket: Inspect the light socket for corrosion or heat damage. Clean contacts or replace socket if necessary.
• 3. Verify timer setting: Some Sommer models allow adjustment of light‑on time. Reset to factory default per manual.
• 4. If light stuck on/off: The light relay on the control board may be welded or open. Replace the control board if the light cannot be controlled by settings.