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

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Pls tell me how to set my ej500 timer to go off and on. i have no instructions and i don't care about 7 days programming, just on and off. thanks

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Easyset Programming the Intermatic EJ500C timer.

Special note:

The EJ500 timer can not be used with compact fluorescent style bulbs.

Resetting the timer:

Press the RESET and the NEXT ON/OFF buttons at the same time.

Release the buttons and wait for 1200 to start blinking.

Setting the calendar:

Press the MODE button one time. ( CAL ) will appear in the top left corner.

Year will be flashing between the word year and 2003.

If the year is not showing 2003 you must repeat the RESET procedure.

To adjust the year press the M+ZONE+YEAR+ button (bottom right)

If you pass the present year use the (bottom center) button to subtract a year.

Press the NEXT ON/OFF button one time. DATE will be flashing.

Press the DAY/DST (bottom left) button to set the current day.

Press the M+ZONE+YEAR+ (bottom right) to set the current month.

Press the NEXT ON/OFF button one time. DST/AUTO will be flashing.

Press the DAY/DST button ( bottom left) to select daylight savings time.

If daylight savings is not being used press the button again and select manual.

Press the NEXT ON/OFF button one time. ZONE will be flashing.

Press the M+ZONE+YEAR+ button (bottom right) and select the zone area of your location.

South , Central or North.

Press the NEXT ON/OFF button one time. SUNUP will be flashing showing the preset time for this zone.

To adjust this time press the HOUR+YEAR- button (bottom center) to adjust the hour and the

M+ZONE+YEAR+ button (bottom right) to adjust the minutes.

Press the NEXT ON/OFF button one time. SUNDN will be flashing, showing the preset time for this zone.

To adjust this time, press the HOUR+YEAR- button (bottom center) to adjust the hour and the

M+ZONE+YEAR+ button (bottom right) to adjust the minutes.
The calendar portion of the timer is now set.

Posted on Apr 03, 2011

  • Jyackle5
    Jyackle5 Apr 03, 2011


    Note: you must continue and set both the clock and the programming function.

    Setting the clock:

    Press the MODE button one time. (CLK) will be displayed in the top left corner of the timer. Using the

    HOUR+YEAR- button (bottom center) set the hour of your current time.

    Using the M+ZONE+YEAR+ (bottom right) button set the minutes of your current time.

    Programming:

    Press the MODE button one time. (PGM) will be displayed on the top left corner of the timer. We are setting

    the ON time for Program 1. --:-- -- 1 ON will be displayed on the screen.

    Press the DAY/DST (bottom left) button to select the day or series of days the timer is to turn ON. You can

    either select the ASTRO time, which will adjust as the days get longer and shorter or a specific time. To use the

    ASTRO time press the DAY/DST until SNST appears on the screen. All seven days will be shown on the bottom

    of the timer.

    Or to use a specific time press the DAY/DST button and select the day or series of days the timer is to turn ON.

    Use the HOUR+YEAR- (bottom center) button and select the HOUR to turn the unit ON. Use the

    M+ZONE+YEAR+ (bottom right) button to set the MINUTES of your on time.

    Press the next ON/OFF button one time. We are now setting the OFF time for program 1. Press the DAY/DST

    (bottom left) to select the day or series of days of operation. To use the ASTRO time press the button until

    SNUP appears on your screen.

    Or to select a specific time, press the DAY/DST button and select a day or series of days the unit is to turn Off.

    Press the HOUR+YEAR- (bottom center) button and set the hour of your off time. Press the M+ZONE+YEAR+

    (bottom right) button to select the minutes of your Off time.



    For additional programs press the NEXT ON/OFF button to the next program and follow above steps. Check the unused programs to assure they are blank. To check the other programs press the NEXT ON/OFF button, you should see --:-- -- on the screen. If a time appears press and release the DAY/DST button until the --:-- -- appears. Repeat this step thru Program 7 off.

    Press the MODE button. (AUTO) will appear on top center of screen.

    Note: If your timer is in the ON position and your program calls for the unit to be OFF at this time press the NEXT ON/OFF button to toggle the unit to OFF.



    For further assistance please call our technical support at 815-675-7000

    Note: you must continue and set both the clock and the programming function.

    Setting the clock:

    Press the MODE button one time. (CLK) will be displayed in the top left corner of the timer. Using the

    HOUR+YEAR- button (bottom center) set the hour of your current time.

    Using the M+ZONE+YEAR+ (bottom right) button set the minutes of your current time.

    Programming:

    Press the MODE button one time. (PGM) will be displayed on the top left corner of the timer. We are setting

    the ON time for Program 1. --:-- -- 1 ON will be displayed on the screen.

    Press the DAY/DST (bottom left) button to select the day or series of days the timer is to turn ON. You can

    either select the ASTRO time, which will adjust as the days get longer and shorter or a specific time. To use the

    ASTRO time press the DAY/DST until SNST appears on the screen. All seven days will be shown on the bottom

    of the timer.

    Or to use a specific time press the DAY/DST button and select the day or series of days the timer is to turn ON.

    Use the HOUR+YEAR- (bottom center) button and select the HOUR to turn the unit ON. Use the

    M+ZONE+YEAR+ (bottom right) button to set the MINUTES of your on time.

    Press the next ON/OFF button one time. We are now setting the OFF time for program 1. Press the DAY/DST

    (bottom left) to select the day or series of days of operation. To use the ASTRO time press the button until

    SNUP appears on your screen.

    Or to select a specific time, press the DAY/DST button and select a day or series of days the unit is to turn Off.

    Press the HOUR+YEAR- (bottom center) button and set the hour of your off time. Press the M+ZONE+YEAR+

    (bottom right) button to select the minutes of your Off time.


    For additional programs press the NEXT ON/OFF button to the next program and follow above steps. Check the unused programs to assure they are blank. To check the other programs press the NEXT ON/OFF button, you should see --:-- -- on the screen. If a time appears press and release the DAY/DST button until the --:-- -- appears. Repeat this step thru Program 7 off.

    Press the MODE button. (AUTO) will appear on top center of screen.

    Note: If your timer is in the ON position and your program calls for the unit to be OFF at this time press the NEXT ON/OFF button to toggle the unit to OFF.


    For further assistance please call our technical support at 815-675-7000

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Programming:
Set present time
Then set ON time for program 1
Set OFF time for program 1
Then set ON time for program 2
Set OFF time for program 2
Most timers will not function if there is a conflict in programming > for example Program 1 says ON at 6 and OFF at 7 and Program 2 says opposite or has overlapping times
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I am an electrician and my client wants me to reprogram the digital timer (Intermatic) I don't know the model # but it looks like the one on the previous page. Probably the most popular digital wall timer...


Below are links to digital timers to help identify your timer.
Manuals for each timer appear on page.
Programming takes patience, which might be why your customer wants you to do it.
And these 1-year warranty timers go bad, and then timer will not reprogram, which may be another reason why customer wants you to do it.
Intermatic EJ500 and ST01C are battery operated, and will not program if battery is low.
Aube has rechargeable battery that is not replaceable, and this timer will not program if battery is bad.
Other timers shown below have clocks that operate on 120V circuit and require white neutral before display lights up.

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With Intermatic EJ500 and ST01C, event1 is the ON event and event2 is the OFF event, up to 40 events.

Add a comment if you hit trouble spot when programming.
Also fixya offers live phone support for a price.

Intermatic EJ500 with 7-day or dusk-to-dawn
Programming remains in memory forever, so you may only have to re-enter current time.
http://waterheatertimer.org/Flipdown.html

Intermatic ST01C with 7-day or dusk-to-dawn
http://waterheatertimer.org/ST01C-program.html

Intermatic EI500 7-day
http://waterheatertimer.org/Programmable.html#EI500

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http://waterheatertimer.org/Aube-timers.html

Utilitec 0192773 with 7-day and astro dusk to dawn
http://waterheatertimer.org/Program-wire-Utilitec-0192773.html

Utilitec 0141224
http://waterheatertimer.org/Program-wire-Utilitec-0141224.html

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http://waterheatertimer.org/GE-timers-and-manuals.html

Woods 59018 in-wall
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http://waterheatertimer.org/Tork-consumer-timers-and-manuals.html

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Flickering bulbs


You posted under EJ500 Intermatic battery-operated timer.
If you have different timer, add a comment.
I have tested EJ500 timer.

A) If this is new single-pole installation and lights click on-off when timer turned on, then you connected red wire where blue wire should be connected.

Manual says for single pole switch:
Timer-black-wire to Hot; Timer-blue-wire to Load (lights)
Here's how to wire timer correctly:
1) Timer-green-wire connects to bare ground wire.
2) Switch has 2 wires. Take switch wires and connect them to timer-black-wire and timer-blue-wire. Choose either one for now.
3) Put wire nut on red wire.
4) Turn on electricity, and push ON-OFF button. If lights come on, timer is wired correctly. If lights do not come on, then reverse timer-blue and timer-black wires.

B) If you are replacing 3-way switch, view wiring diagrams shown on link below, and then add a comment saying exact color of wires. To wire this timer for 3-way can require additional wire between switches. This is because EJ500 blue wire must always go to Load (light, fan, motor)
http://waterheatertimer.org/ST01C-program.html#EJ500-wire

C) If this is older timer that stopped working, check your bulbs. Then check timer battery. Manual says if timer stops working and bulbs are good, and battery good, then reset timer and reprogram. How to reset timer. Press reset button while holding down Next/ON-OFF button.
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EJ500 manual
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/ej500c%20-%20english.ashx

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1 Answer

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If you have a battery operated timer, it is probably the Intermatic ST01C or EJ500.

http://waterheatertimer.org/Programmable.html
The link above will help you identify your timer.

As a general rule, if a new battery does not revive the Intermatic timer, then timer needs to be replaced. Make sure you have electricity. And be sure to mark your wires before removing timer. Mark the black wire that connected to timer-black wire. It's the hot wire from breaker box.
You can replace with same model and brand so your wiring is EZ.

The ST01C and EJ500 are 7-day timers with up to 40 programs per week. They each connect with 2 wires. Black and Blue with red wire capped off. Just mark your wires before you disconnect old timer. And then reconnect new timer wires just as old timer was connected. The red wire is capped off.

The Aube T1032 is also a 7-day timer with 7 programs per week. This timer connects a bit differently. It connects with 3 wires. You put the black where old timer-black wire connected. And then you connect the red and blue together and connect them where the old timer-blue wire connected.

Other timers require wiring that is bit different, but the page link above shows the wiring ... and you can re-post another question any time >>> or respond to this answer.

Keep us posted.

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EJ500 has 1 year warranty. The reset button sits naturally lower than other buttons.

The manual shows troubleshooting.
http://waterheatertimer.org/Intermatic-ej500c-manual.pdf

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Maybe a new timer is needed. ST01C (1 year) & EI600 (5 year warranty) each offer same 40-programs per week.

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