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Have a new home with an Intermatic timer for an exhaust fan. Fan continually runs. Replaced battery, reset, and programmed the timer but it does not control the fan in program or manual modes. When trying to turn on/off the display reads "noOp". I do not have a manual and cannot tell what model number it is. It is small white wall unit with clear cover over keypad. Clear cover is pushable to activate on/off event button. Any ideas on what to do with this? - Thanks

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Posted on Jan 02, 2017

VtToolMan
  • 704 Answers

SOURCE: intermatic outdoor can't reprogram. display reads NoOp

Les, First thing to do is to change the battery and see if the timer will allow you to reprogram it. Sometimes these timers will fail, as some models have a known history of failing fairly often.

NoOp, means non operating within the Intermatic line of electronic timers, so in order to see if the unit has failed or is just malfunctioning, due to a weak battery, remove the existing battery and install a fresh, new one.

You can remove the existing battery by flipping down the front switch panel and removing the battery tray with either your fingernail or a small flat bladed screwdriver. As your timer is showing the NoOp, you don't have to worry about losing your programmed on/off cycles, so you can take your time. Normally, if you're changing the battery, you get about 30 seconds to do this with some models of Intermatic timers, or you'll lose the settings. The newer models store the program regardless of how long it takes to change the battery.

Once you've replaced the battery, press the Reset button on the timer and allow it to refresh. If the NoOp is gone, just reprogram the timer with your on/off cycles and days and you're back in action. If the timer doesn't clear, you'll likely need to replace it, as it could be damaged and will not be able to be programmed again.

Usually, changing the battery and resetting the timer works about 60% of the time for me, as I've installed thousands of the various Intermatic timers in customer's homes over the years.

Hope you find this Very Helpful and best regards!

Posted on Sep 09, 2009

SOURCE: What is Noops meant? Intermatic

No operation.
Either battery is bad or timer quit working.

ST01C takes CR2 battery, but folks post on fixya that ST01C quit working even with new battery:
http://waterheatertimer.org/ST01C-program.html#battery

Posted on Nov 13, 2010

SOURCE: 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.
Release ON-OFF and wait for display to show.
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

Posted on Nov 29, 2010

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1 Answer

Whole house fan


no-op means no operation.
Replace battery, and reset timer... if functionality is not restored, then replace timer
http://waterheatertimer.org/ST01C-program.html#battery
http://waterheatertimer.org/Countdown-timer-horsepower-ratings.html

Gene

Apr 06, 2014 | Intermatic Hardware & Accessories

1 Answer

Anyone have a problem with replacement battery for SS8 intermatic timer


Copy following link for all Intermatic timers, including new Ej600, and older SS series timers.
http://waterheatertimer.org/Intermatic-timers-and-manuals.html

Try resetting the timer. Hold down ON-OFF button and push and release reset button. Keep holding down ON-OFF until display starts flashing 12:00
Clean battery terminals.
My SS8 manual shows 1.5 volt alkaline battery but does not specify the shape or size of battery.
If the display is visible, then timer is getting power.
The low battery error might clear up after reset, but if it does not, then replace timer.
Intermatic has new EJ600 timer that has internal rechargeable battery, and does not need battery replacement. Or use ST01C or Ei600.
Remember also that timers cannot be exposed to extremes of hot or cold, or the battery can stop functioning.

May 01, 2012 | Intermatic Hardware & Accessories

1 Answer

I have a timer that won't hold the program time set schedule? I have paid an electrician to come out and check to make sure i don't have any shorted out wires?? Electrician didn't find any...


Question posted under 120volt Intermatic Eh10 timer.
I do not have repairs for defective timer.
EH10 has 1 year limited warranty.

Located just below the digital display is compartment for AA battery.
Display is controlled by battery.
Replace battery, press and hold reset button for several seconds to reset timer, and try to program again.
http://waterheatertimer.org/How-to-wire-EH40-hot-water-heater-timer.html#EH10
http://waterheatertimer.org/pdf/eh10-manual.pdf

EH10 and EH40 timers are susceptible to line noise.
If timer is connected to water heater, there is no line noise. And electrician tested for shorting wires.
But when timer is connected to fan, pump, or other type of load, then interference can be a problem.
Intermatic can provide a filter.
http://www.intermatic.com/customer%20service.aspx

Digital timers, digital water heaters, digital washer and dryer, digital water softener, digital treadmill, etc are increasingly common, yet are not protected from surge.
People protect computers and TVs, but forget other costly items.
EH10 can be affected by surge.
Install whole house surge protection:
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#surge

Aug 17, 2011 | Intermatic 7 Day Electronic Timer Eh10...

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My intermatic ej351c timer is not working properly. lights only stay on a few seconds - a few minutes before shutting off, even when button is pushed to override program. is there a battery that needs to...


Timer has non-replaceable capacitor battery for 15 minute carryover during power outage.
Timer can be affected by radio and TV receivers. Unplug those devices and check if function is restored.
Reset timer and program again.
If timer function is not restored after reset, then buy new timer.
Timer has 1-year limited warranty, and is rated for incandescent only, up to 150Watts.
http://waterheatertimer.org/pdf/Intermatic-ej351c.pdf
http://waterheatertimer.org/Intermatic-timers-and-manuals.html

Aug 12, 2011 | Intermatic Programmable 24 Wall Switch...

1 Answer

My Tn111 timer is running hot with just a fan running


TN111 timer should not be hot.
All electrical devices generate heat, but the clock motor inside TN series is around 3Watts, and should put off same heat as 3 watt light bulb.
This timer is rated for inductive loads like a fan, up to 1/3 HP (horsepower). Some timers are incandescent only and are not rated for fans or HP loads.
1) Try plugging timer into different outlet and to different Load (light, fan)
2) Test outlet with cheap circuit analyzer from home center to make sure outlet is wired correctly.
3) This line of timers has limited 1 year warranty
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#appliance

Jul 24, 2011 | Intermatic TN111C Standard Lamp &...

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.
Release ON-OFF and wait for display to show.
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

Nov 29, 2010 | Intermatic Inc. ST01C Digital In-Wall...

1 Answer

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.
EJ500 manual has long list of programming instructions: Add a comment if you forgot parts of programming.
EJ500 manual
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/ej500c%20-%20english.ashx

Nov 28, 2010 | Intermatic Inc. EJ500C Digital Wall Switch...

1 Answer

Does not turn on exhaust fan motor in bathroom. Display functions work. Could it be the battery or the unit?


The problem can be either battery or timer.
Several people wrote fixya over past months saying that ST01C failed completely after installing new CR2 battery.
http://waterheatertimer.org/ST01C-program.html#battery

Battery operated timer, then weak battery can cause timer to malfunction.
ST01C troubleshoot says BATT advisory does not always display.
ST01C has 1 year warranty.

Advantage of battery-operated timer is simple wiring when box does not have neutral or ground wire.
Battery-operated Intermatic EI600 has 5 year warranty
http://www.intermatic.com/products/timers/in-wall%20timers/electronic%207-day%20astro%20time%20switches.aspx
Honeywell Aube T-1032 7-day timer has internal rechargeable battery
http://waterheatertimer.org/Aube-timers.html

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1 Answer

We recently purchased a home with an intermatic model EJ500 timer. It does not work. Changed batteries - screen does not light up. Breaker checked and working. Nothing happens when press next/on/off and...


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

If timer is blank: display bulb burned out; press next/on/off, other timer or switch has turned off power to EJ500.

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

Timers shown above are battery operated, and cannot operate load farther than 100' from timer.

EI500 & GE 15086 offer 7 programs per week ... 7 on events and 7 off events.
http://waterheatertimer.org/Programmable.html#progr

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2 Answers

Can't program my Intermatic DT620CH self adjusting timer


RTFM should get you sorted:
DT620
Reply back if you still have questions. :-)

Dec 27, 2009 | RTO Intermatic DT620CL 15 Amp Indoor...

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