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The first test to perform will determine if power is passing through the transformer and any switching devices (timer, photocell) to the low voltage taps.

1. If the transformer includes a PhotoCell (PC), cover the photo eye with a black bootie and switch the timer to the “on” position by rotating the small knob on the top of the timer counterclockwise.
2. Next, turn your voltmeter on and place one of the probes on the lug labeled “Circuit #1 Common 300 w Max” and the other probe on the voltage Tap labeled “Low Volt Hot 11 volt”.

Repeat this test on the 12 volt, 13 volt and 14 volt taps and also on circuit #2 and #3 if applicable.

If your readings are 11 volts +/- 0.5 volt, 12 volts +/- 0.5, etc, you will have determined that the transformer and all switching devices are operating properly.

If your low voltage taps are getting power and your lights still don’t work, most likely there is a problem with the circuit cable (cut cable), a problem with the lamps or a problem with the wire connectors.

If you’ve determined that the transformer is getting proper voltage from the electrical panel to the receptacle on the face of the transformer and your system still isn’t working, we will next test to see if your timer has malfunctioned. To test the timer, you must have a voltmeter.

Note: All high voltage side testing should be performed by a trained electrician, electrical shock can occur if testing is not done properly.

1. First remove the two screws located on each end of the clear terminal block face plate.
2. Raise the face plate up and place one voltmeter probe on the voltage tap labeled “120v Common White” and one on the tap labeled “Photocell Hot Black”.
3. Make sure the timer is switched to the "on" position by rotating the small knob on the top of the timer counterclockwise.
4. If your reading is approx 120 volts, you know the timer is working.
5. If you get no reading, remove the timer, reinsert the plug into the timer receptacle and test the two taps again. If your voltmeter is reading approx 120 volts, you’ve determined that the timer has malfunctioned. Install a new timer.

If the voltmeter reading is 0 when performing this test, something has come loose inside the transformer and it will need to be returned to the factory for repair. This is, however, a very rare occurrence.

Note: if your transformer includes a PhotoCell (PC) you must cover the photo eye with a black bootie or electrical tape in order to simulate night time. Removing the timer but not covering the PhotoCell will not provide an accurate test as the power path will stop at the PhotoCell.