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Intermatic HB51R photoelectric timer shuts off too soon

I am using this outdoors for Christmas lights. It comes on at dusk like it is supposed to but shuts itself off after 2 to 3 hours instead of the 6 I programmed it for. It is not an overload problem as the circuit doesn't trip and it turns back on if I set the dial to a different setting while it is still plugged in. Doesn't seem to matter what setting, I can go up to 8 hours or down to 4. Either way, moving the dial turns it back on.

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  • jdmcdale Dec 09, 2008

    I am using this outdoors for Christmas lights as well. It comes on at dusk like it is supposed to but shuts itself off after 2 to 3 hours instead of the 6 I programmed it for. It is not an overload problem as the circuit doesn't trip and it turns back on if I set the dial to a different setting while it is still plugged in. Doesn't seem to matter what setting, I can go up to 8 hours or down to 4. Either way, moving the dial turns it back on. My electrician friend told me it could be electrical interference

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Its seeing the light from your xmas display

Posted on Dec 02, 2009

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Hb51r manual


Plug in
make sure bulbs work
rotate dial to set choice of delay times
timer turns on at dusk,,, and delays off for amount of time you choose
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#outdoor

Gene

Dec 13, 2013 | Intermatic Outdoor Timer/Photo Control...

1 Answer

How do I set timer


manual for HB51RC
http://www.intermatic.com/%7E/media/files/intermatic/products/instructions/timers/hb61rc%20-%20english.ashx
See timer at Amazon
http://www.amazon.com/Intermatic-HB61RC-Digital-Outdoor-Control/dp/B00004W4X5


Plug timer into outlet
Plug lights into timer
Timer turns on automatically at dusk + override lets timer run during daylight hours
Timing cycle repeats each 24 hours
Use selector button to set timer
Timer must be reset after power outage or after unplugging timer.
Rotate selector button and choose one of following

F > Lights are OFF
O > Constant ON
1 through 9 > timer turns ON at dusk and turns OFF 1 to 9 hours later
d > timer turns ON at dusk and OFF at Dawn
1. through 9. > timer turns ON immediately and then turns OFF 1 to 9 hours later
Maximum wattage 1000
50 mini-bulb-string of Christmas lights is 25 watts

Dec 14, 2010 | Intermatic Outdoor Timer/Photo Control...

1 Answer

How do I set it and can I use it indoors?


I see nothing in the manual that says 'outdoor use only' EXCEPT timer runs on photoelectric eye.
Timer turns ON automatically at dusk, so if timer is inside, and indoor lights are ON, then timer stays OFF.

http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/hb51rc%20-%20english.ashx

http://www.intermatic.com/products/timers/consumer%20outdoor%20timers/electromechanical%20timers/hb51rc.aspx


To use timer outdoors.
Plug timer into wall.
Timer turns ON automaically at Dusk.
Rotate dial to set how long timer will stay ON.
Set timer to turn OFF 2 4 6 8 Hours after dusk
Set timer to turn off at dawn
Set timer to ON so lights are ON full time
Set timer to OFF so lights are off full time.
geno_3245_161.jpg

Dec 09, 2010 | Intermatic Outdoor Timer/Photo Control...

1 Answer

Will the HB51R have to be placed outside to work on dusk to dawn.


The dawn to dusk feature is activated by photoelectric eye that senses when it gets dark.
If you put timer in a dark room, it will turn ON ... let's say to operate Christmas tree after you leave a room for the evening.
But if room stays dark, the timer will not sense when to turn off unless you also set timer to turn off 1-9 hours after ON.
That being said, a Christmas tree might make too much light for the timer's photoelectric eye.
Make sure photoelectric eye is turned away from direct light.

Dec 09, 2010 | Intermatic Outdoor Timer/Photo Control...

1 Answer

I have an intermatic HB51R. when i go to program it to stay on for a certain amount of time it turns the lights off as soon as i switch it away from the on position. Am i doing something wrong?


I don't think it is supposed to be in the "on" position when setting it up.
Turn dial to "off".
Then plug timer into grounded outlet.
Turn dial to 2, 4, 6 or 8 hours to run after dusk.
Plug in your outdoor lights.
Wait until dusk.
Let us know if this works.

Dec 08, 2010 | Intermatic Outdoor Timer/Photo Control...

1 Answer

My intermatic time HB51R flashes on and off when on the timer position (2,4,6, hours) it keeps the lights lit on the "on" position and "off" on the off position


I think the timer's photoelectric eye is getting too much light from the Load it turns on.
To check this, set timer at 2 hours, and then put black tape over the photoelectric eye so timer senses that it is dark and turns ON.
If timer does not blink with black tape, then problem is too much light with will cause on-off cycling of the timer.
If timer blinks with black tape over the eye, then timer is suspect. Exchange timer for another one.

Dec 05, 2010 | Intermatic Outdoor Timer/Photo Control...

2 Answers

My timer comes on at dusk and the lights blink on and off until they shut off 6 hours later.


1) Put black tape over photoelectric eye on timer.
Photo-eye is small round eyeball that bulges out.
See of lights stay on.

2) Turn timer away from source of light so photoelectric eye does not pick up feedback from lights.

It sounds like photo eye is receiving enough light that it turns off, 'thinking' it's dawn.
And then when lights are off, photo eye 'thinks' it's dark again, so lights come back on.

Let me know if this is the answer, because it's Christmas season, and folks have been asking about blinking outdoor timers. And then you're en-route to become fixya expert and boost your GNP by 3 cents an answer.

Nov 30, 2010 | Woods Outdoor Photoelectric 24 Hour...

1 Answer

How do I set the hb51r so it turns on and off after 6 hours?


manual for HB51RC
http://www.intermatic.com/%7E/media/files/intermatic/products/instructions/timers/hb61rc%20-%20english.ashx
See timer at Amazon
http://www.amazon.com/Intermatic-HB61RC-Digital-Outdoor-Control/dp/B00004W4X5

Plug timer into outlet
Plug lights into timer
Timer turns on automatically at dusk unless you set override feature shown below

Timing cycle repeats each 24 hours
Use selector button to set timer
Timer must be reset after power outage or after unplugging timer.
Push selector button and choose one of following

F > Lights are OFF
O > Constant ON
1 through 9 > timer turns ON at dusk and turns OFF 1 to 9 hours later
d > timer turns ON at dusk and OFF at Dawn
1. through 9. > timer turns ON immediately and then turns OFF 1 to 9 hours later
Maximum wattage 1000
50 mini-bulb-string of Christmas lights is 25 watts

From these instructions, you should push button until 6 displays. Timer will turn ON at dusk and turn OFF 6 hours later
If timer.
If you want timer to turn ON immediately and turn OFF 6 hours later, push button until 6. shows in display.

If timer does not display or does not operate correctly, then timer is suspect. Return timer for another one.

Oct 02, 2009 | Intermatic Outdoor Timer/Photo Control...

1 Answer

Setting


manual for HB51RC
http://www.intermatic.com/%7E/media/files/intermatic/products/instructions/timers/hb61rc%20-%20english.ashx
See timer at Amazon
http://www.amazon.com/Intermatic-HB61RC-Digital-Outdoor-Control/dp/B00004W4X5

Plug timer into outlet
Plug lights into timer
Timer turns on automatically at dusk + override lets timer run during daylight hours
Timing cycle repeats each 24 hours
Use selector button to set timer
Timer must be reset after power outage or after unplugging timer.
Push selector button and choose one of following

F > Lights are OFF
O > Constant ON
1 through 9 > timer turns ON at dusk and turns OFF 1 to 9 hours later
d > timer turns ON at dusk and OFF at Dawn
1. through 9. > timer turns ON immediately and then turns OFF 1 to 9 hours later
Maximum wattage 1000
50 mini-bulb-string of Christmas lights is 25 watts

Oct 02, 2009 | Intermatic Outdoor Timer/Photo Control...

1 Answer

Lights continue to go off


Maybe the lights are causing photoelectric eye to sense that it's no longer dark.
This is called feedback.
To check this, set timer for 2 hours.
Put black tape over photoeye.
Check if timer turns on-and-off.

If timer continues to blink, then timer is suspect. Return it for another one.
If feedback is causing the problem, then turn timer away from lights or place obstruction between timer and lights.

Dec 10, 2008 | Intermatic Outdoor Timer/Photo Control...

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