Question about Intermatic EI600WC - In-Wall Decorator Electronic 7 Day Astronomic Time Swi

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The timer(mdl. ST01 suddenly will not turn on lights..Please help

The timer suddenly stopped working there is power but but when I press the button it won't turn on the lights. I've tried resetting the timer but it hasn't helped. ( the Screen blinks to batt and then back to the time I don't maybe this has something to do with it)... Please help me Man in the Dark

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Posted on Jan 02, 2017


SOURCE: My wall timer controls an

If you have a battery operated timer like Intermatic ST01C, it may not operate another timer.
The ST01C will not operate circuits farther away than 100 feet, or operate when wires are located underground. Sounds peculiar doesn't it.
I assume these parameters are because of how the battery interacts with electronics inside the timer.
On the other hand, maybe your battery is getting weak.
The manual shows incandescent, fluorescent, motors and DC loads.
But manual doesn't specifically include or exclude other electronic devices that might put electronic feedback on the line.

I'll run a test on the ST01C next couple days, and post result on this thread.

Posted on Dec 16, 2010

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SOURCE: Malibu Low Voltage Outdoor 300-Watt

How many watts of lights are connected to the transformer. It should be between 250 and 300 watts.

Posted on Mar 20, 2011

SOURCE: I have 3 brand new

You are having bad run on timers.
At least your car is working and the whole house fan motor-winding didn't overheat and stop working.
The problem with timers that don't work is that you have the timer and can fiddle with the settings.
The expert is just guessing at a possible causes, and at the end you still have a timer that doesn't work and might wish the expert can drive over and sort out problem > but that isn't going to happen.

The free answer is not interactive, so for best possible answer, re-post question and pay for interactive answer with expert who can suggest things, and then you try that and give feedback to expert, and then try next thing and give feedback, etc.

Before you pay for answer, let me make free guesses for your benefit
It seems you are experimenting with different loads and each load is causing same result, so that implies that timer is probably the problem.
You do not mention trippers, so maybe you don't have turquoise 107TN222 on-tripper and red 107TN221 off-tripper in place or pushed all the way down.
Maybe your timer did not come with trippers
You don't mention if your Load is turned on > for example turn on the light before plugging into timer. The timer does not reach up and operate the on-off switch on a lamp for example.
You can manually rotate timer dial clockwise and that will cycle through entire day. Manually rotating dial will let you test tripper and and switch settings.
Some timers are 'vacation timers.' TN111 is not vacation timer, but vacation timers are factory preset for on-off times and cannot be set by customer.
Maybe you do not have T111 timer: Open link to identify timer.
Maybe you got a bad batch of timers and they are defective. I test timers and 4-6% of in-wall and plug-in timers arrive defective. Intermatic makes a top-notch product.
Your yard light timers are probably not related, but open first link to see cross section of yard timers. Most timers come with 1 year limited warranty, so if all of them stopped working at same time, maybe a dust storm put particulate in the clock gears, or maybe a power spike fried the clock motor electronics.
Use cheap circuit analyzer from home center and check outlets for problems.
I suggest whole house surge protector which is more costly than timers, but will protect things that are on not on a surge protector, like water heater electronics, whole-house-fan, heat-AC, refrigerator, circuit breaker panel, etc. Surge protector will protect from lightning strike, and is replaced after each event.

Posted on Apr 29, 2011

SOURCE: I returned from vacation last

1) You performed correct troubleshoot steps down the line.
Last thing would be to install defect timer on another light circuit in house, and see if problem is the timer or wire going to coach lights.

2) EJ351C has 1 year limited warranty.
Buy new EJ351c and install single pole light switch until timer replacement is available.
Timer has easy 2-wire installation. Turn off power. Connect new timer just like old one was connected. Either timer black wire connects to either wire in switch box.

Posted on Aug 08, 2011

SOURCE: We've lost the instruction manual

Question posted under Intermatic timer:
Open following link to identify timer and download possible manual:

IF Intermatic timer stopped working because battery failed, then all that's needed is to reprogram current time, because the original timer programs you set are stored inside timer forever until timer is manually reset using reset button.

If you have Intermatic ST01C timer, then open following page for ez instructions:

If you need help programming specific timer, then get as far along in manual as possible, and then add a comment.

If you have different brand timer, than each brand has link that shows on Intermatic page.

Posted on Aug 11, 2011

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If timer is not functioning... the battery needs to be changed or installed (if timer has battery, such as ST01, Ei500, EJ500 timers)
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The EJ500 is rated for incandescent (resistive) bulbs only, and not LED CFL etc.
Max distance between light and timer is 100 feet and wire cannot be underground.
Replace with ST01 timer, or Ei600 timer... these timers are rated for any load (resistive or inductive), and are programmable or dawn-dusk... 7 day... single-pole or 3-way


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Intel self adjusting in-wall timer

Reset timer by holding down on-off button then press and release small round reset button. Then release on-off button. Display should flash 12:00
This timer uses CR2 battery.
If functionality is not restored after new battery and reset, then timer has probably gone bad?
ST01 timer has 1 year warranty from


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If reset does not restore functionality, then timer is bad, or in case of ST01 timer, the CR2 battery may need to be replaced.

1) Timer model and brand are unknown.
Copy following link for ST01 timer:

2) Add a comment and describe timer in detail, and add if this is new installation or older timer that stopped working.

Dec 26, 2012 | Hardware & Accessories

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I have SONY BRAVIA KLV-32BX300 TV and I had a problem connecting it with my pc, I tried the VGA cable and the pc with another monitor and it worked fine, so I tried doing a firmware upgrade and followed...

This is indicative of a bad flash; I would recommend formatting your USB stick (FAT32), redownload the pkg update (available here: ), and performing a firmware upgrade again.
Taken from:
  1. Turn the TV on.
  2. Insert the USB storage device into the USB port on the back of the TV.
    Note: The USB storage device can only be inserted into the USB port slot one way.
  3. Turn your TV off by pressing the power button on the TV
  4. Press the POWER button again. The POWER indicator will be green for 30 seconds, followed by the PIC OFF/TIMER indicator slowly flashing amber, and the STANDBY indicator is red.
  5. After several minutes, the TV will turn off and then turn back on to complete the update.
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I have an intermatic switch. Just put a new lightbulb in and when I try to turn the light on, I hear a repeated clicking as (presumably) the power is switched on and off. Have tried replacing battery and...

1) If timer worked before and suddenly stopped working, then reset timer.

2) If this is new installation, timer might be wired incorrectly or timer is defective.

You posted under ST01C timer.
If you have different timer, instructions below will not apply.
To reset ST01C timer, hold down on-off button and press reset with paper clip.
Release reset button.
Keep holding on-off button until INIT displays.
Release on-off button and 12:00 will display.
Reprogram timer

Open following links to see wiring diagrams and download manual for ST01C and EJ500 timers:

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

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Should have oil in it. I don't think you can refill it. If it has leaked out, it's probably no good. Anyway, here are the instructions.

Press the *power button* once to start the heater on high power, continuous run. If left at this setting, the unit will run continuously on high power (1500 watts, 12.5 amps) and will not shut off until the unit is manually turned off.
Press the *power button* again, to change to low power, continuous run, (900 watts, 7.5 amps) and will not shut off until the unit is manually turned off.

Set temperature:

Press the temp/timer button until the temperature icon blinks. Use the up and down arrows to set the desired temperature.
The temperature icon will stop blinking and the current room temperature will reappear after the desired temperature is set.

The heater will turn off and on to achieve the desired temperature.

Set timer: (auto off)

Press the timer/timer button until the timer icon blinks. The hour display will appear. The auto off icon will also appear.
Use the up and down arrow buttons to set the heater operation time between 1 and 10 hours. This function will activate once the timer icon stops blinking. The heater will automatically turn off whn the times runs out.

Set timer: (auto on)

Press the temp/timer button until the timer icon blinks. The hour display will appear. The auto on icon will also appear.
Use the up and down arrow buttons to set the heater start time between 1 and 10 hours. This function will activate once the timer icon stops blinking.
The heater will automatically turn on when time expires.

Hope this helps!

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