If your low-voltage transformer is not working properly, follow these basic checks:
1. The transformer won’t turn on
- Make sure the transformer is plugged in
- Confirm the outlet is working
- If the breaker trips:
- Unplug the transformer
- Fix the issue before plugging it back in and resetting the breaker
2. Check the timer and photocell settings
- OFF = unit stays off
- ON = unit stays on
- AUTO = turns on at dusk and off at dawn
- To test:
- Set to AUTO
- Cover the photocell for 30–60 seconds
If the lights turn on, the photocell is working correctly
3. Inspect wiring connections
- Make sure wires are:
- Properly stripped
- Fully inserted under the terminal
- Tightened securely
Loose connections can prevent the system from working
4. Check the light fixtures
- A burned-out lamp can make it seem like the system isn’t working
- Swap with a known working light to test
5. Make sure the transformer is not overloaded
- Do not exceed 80% of the transformer’s total wattage
- Example: 150W transformer = max 120W load
Overloading can cause the system to shut down or reduce lifespan
6. Check transformer placement
- Install the transformer close to the lights
- This helps prevent voltage drop from long cable runs
7. General safety reminders
- Plug into a GFCI-protected outdoor outlet
- Do not use extension cords
- Do not submerge the transformer
- Ensure proper grounding
Following these steps will resolve most common transformer issues and help ensure proper operation of your lighting system.