![]() Timer must be reset after power outage or after unplugging timer. Timer turns on automatically at dusk unless you set override feature shown below If timer resets because of feedback, it begins 4 hour countdown again, so lights will not turn off until much later than planned, or not turn off until dusk. Is when the photo eye gets too much light, and then timer thinks it'sĭawn, so lights turn off, and a moment later photo eye thinks it's duskįeedback from lights will cause timer to reset the 4 hour countdown.Ī car pulling in driveway can cause feedback. Timer set to 4 hours will start countdown when timer turns ON > and 4 hours later timer will turn off. Timer turns on automatically at dusk because timer has photo eye. To set for ON at dusk, and off 4 hours later, rotate dial to the number 4. You posted under Intermatic make HB51 timer. If timer is not functioning correctly, then timer is defective. Set timer for 2 hours for example and then check if timer turned off 2 hours later. You can test timer by putting black tape over photo eye, and then timer will turn on. If the timer resets because of feedback, it begins the 8 hour countdown again, so the lights will not turn off until dawn. ![]() Make sure timer is turned away from lights so photo-eye doesn't receive feedback.įeedback is when the photo eye gets too much light, and then timer thinks it's dawn, so lights turn off, and a moment later photo eye thinks it's dusk again and lights turn on again.įeedback from lights will cause timer to reset the 8 hour countdown.Ī car pulling in the driveway can cause feedback. Timer set to 8 hours will start countdown when timer turns ON > and 8 hours later timer will turn off. To set for ON at dusk, and off 8 hours later, rotate dial to the number 8. If this is not your timer, then add a comment.
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