Question about Intermatic Inc. EJ500C Digital Wall Switch Timer - Self-Adjusting Feature

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Our Intermatic timer is about 20 years old and is sporadic when it comes to coming on and staying on. I keep resetting the timer but to no avail. I would like to replace it but do not have the manual. What do I need to do to remove the current timer?

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Hi,

See the link below and see if one of these timers is like yours. You should be able to get some instructional material by following the links.

http://www.intermatic.com/products/timers/consumer%20indoor%20timers/in-wall%20timers.aspx

Posted on Jul 16, 2010

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There is a new line of timers coming from China that looks identical to Paragon 4000, and uses same tripper. As a result this timer design and trippers could be around for years to come.

Replacement timer is Intermatic T104R 240Volt indoor outdoor enclosure, with replacement parts widely available
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Intermatic R8806P101C timer hesitates when turned on manually


1) Copy following link for troubleshoot:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timers.html
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2) Blow out timer with compressed air.
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3) Add comment dec 2012 and say what you discover

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How do I reset the intermatic EI400 light timer


Copy following link to identify Ei400 series programmable countdown timer and download possible manual:
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#Ei200

Hold down ON/OFF button and fully press-and-release small round reset button using paper clip.
Keep holding ON/OFF button until display changes

This timer uses CR2 battery installed in tray below the buttons.
Reset timer after installing new battery.
If functionality is not restored after new battery install and reset, then timer has gone bad.
This timer has 1 year limited warranty through Intermatic for defects in workmanship.

Ei400 can be wired for single-pole or 3-way.
Timer requires no neutral wire since battery operates the timer and relay circuit

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I have an intermatic timer ET170 series and I can't program the days for my lights to come on... I already tried several times but the timer does not take my changes why.


Is this a newly purchased timer?
ET170 series has standard 1 year limited warranty, and is discontinued timer replaced by 7-day, 1 and 2 channel ET1700 series.
The manual shows troubleshoot section:
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/et175c%20-%20english.ashx

Last step restoration for electronic timers is to replace battery and push in reset button.
Battery compartment is located below buttons.
Compartment slides down and outward and holds AA battery.
If functionality is not restored, then timer has gone bad.

Intermatic customer service:
http://www.intermatic.com/customer%20service.aspx

Aug 25, 2011 | Hardware & Accessories

1 Answer

Timer display says "Lo Battery". I put two new


Intermatic timers might require reset-and-reprogram after battery replacement.
To reset, hold down on-off button and push reset button once.
Keep holding on-off button until display changes.
Release on-off button, and display should blink 12:00

Try cleaning battery carriage contacts with alcohol and make sure battery polarity is correct.

If functionality is not restored, then replace timer.
Intermatic EJ500 comes with 1 year limited warranty and is rated for incandescent light bulbs only.
http://waterheatertimer.org/Intermatic-timers-and-manuals.html

Aug 08, 2011 | Intermatic Inc. EJ500C Digital Wall Switch...

1 Answer

My wall installed intermatic timer will not shut offf. Either by the program or the manual switch. Help appreciated


Timer model is not known.
Last ditch troubleshoot for ST01C, EJ500, and Ei600 programmable timers is to change battery and then reset timer.
Battery is inside compartment located below programming buttons.
Make note which way battery/batteries come out for easy replacement.
How to reset these timers: Hold down on-off button. Push reset momentarily. Keep holding down on-off until display shows INIT. Release on-off button and 12:00 is flashing. Reprogram timer.
If functionality is not restored, then timer is bad.
ST01C and EJ500 have 1 year limited warranty.
Heavier duty Ei600 is same as ST01C, but has 5-year limited warranty.

Open following link to identify product, and then add a comment for more help if needed.
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1 Answer

The wall timer to my outside lights says "noop"


noop means no operation.
This usually shows on older timer.
You posted under Intermatic ST01C.
Other have written to fixya with same symptoms.

CR2 battery might be bad. Replace battery.
Replace battery quickly and current time remains in memory.
Battery out of timer longer than 30 seconds, then current time and day disappear.
Programming remains inside timer forever with or without battery until timer is reset.
Others report they changed battery and timer never came back to life afterward.
http://waterheatertimer.org/ST01C-program.html#battery

Manual troubleshoot section also suggests resetting timer, and then re-programming.
Manual:
http://waterheatertimer.org/Intermatic-st01c.pdf
To reset timer, hold down ON-OFF button and push small round reset button with paper clip.
Push reset for 3 seconds and release.
Keep holding down ON-OFF until INIT shows on display.
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If display never shows, then battery is dead or timer is bad.
ST01C comes with 1 year limited warranty.

Advantage of Intermatic battery operated timer is simple wiring, plus astronomic function (dawn-dusk).
All in-wall timers have advantages and disadvantages.

Nextag shows new ST01C sellers
http://www.nextag.com/intermatic-st01c/products-html?nxtg=90ff0a280507-C4F7FB4C58223A3F
Page also shows Intermatic EI600 astronomic timer that comes with 5 year limited warranty

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HB65 manual is not available.
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http://www.intermatic.com/products/timers/consumer%20outdoor%20timers/digital%20timers.aspx
http://www.intermatic.com/customer%20service/instruction%20manuals.aspx

HB61 manual:
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/hb61rc%20-%20english.ashx

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1 Answer

I have a intermatic ej351 in my garage to turn the outside coach lights on and off. I made the mistake of putting some 10 year bulbs in the coach lights and now the red light on the timer just flashes...


I answer questions for free.
I specialize in timers and electrical devices

Below is the manual for the EJ351
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/ej351c%20-%20english.ashx
The red light is a good indicator of the EJ351 timer.
The manuals says that you can clear all programming by moving control lever to OFF-CLEAR position for 20 seconds.
After programs are cleared, the red light will turn off.
Then move control lever to ON position, and then red indicator light will start flashing.
So the problem may be that the timer programs were accidentally cleared.
Use the instruction manual to re-program your timer.
Add a comment if you need more assistance, and I will help.
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1 Answer

The timer will turn on at the correct time, and then does not shut off at all. Any suggestions? I have tried resetting


A conflict in programming, or program overlap will cause timer to ignore programs. Write out a schedule before programming.

If you reset and re-programmed timer, that is the final answer for the EJ500 and ST01C intermatic battery-operated timers.

The timer comes with a 1 year limited warranty. It doesn't last forever.

If timer is old, maybe it's time for a new one.
If timer is new, then take it back

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