Question about Intermatic Inc. EJ500C Digital Wall Switch Timer - Self-Adjusting Feature
Can't reprogram outdoor light timer display reads NoOp not sure of intermatic model
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
My experience is that changing the battery rarely helps. But here is what does help. The compicated but excellent answer can be found at http://www.fifengr.com/intermatic/. My answer is similar, but requires only minimal disassembly of the unit. The NoOp state happens when the motor gets stuck. To unstick the motor, all you need to do is run the motor backwards once. Then you will be able to run it fowards from then on and life will be good. To run the motor boackards, so this: 0) Remove the unit from the wall, disconnecting the AC wires, and don't electrocute yourself. 1) Remove the battery holder (but leave the battery in the holder). 2) open the unit by lifting the four white tabs in the sides of the case. 3) separate the two halves. Don't remove the circut board from the front half. (if you do, don't lose the two tiny springs that provide contact between the battery terminals and the front circut board). 4) on the main body (which you have NOT opned), there are five springs sticking up. the two on the left power the motor. Touch the battery holder contacts to the springs. The motor will turn. When you have the battery connected backwards, the motor will turn once and stop. Touch the contacts the other way around and the motor will run forwards and cycle numerous times. 5) Repeat step 4, connecting the battery backwards and forwards until you are satisfied the motor will run forwards nicely. 6) Put everything backtogether and enjoy!
Posted on Oct 05, 2012
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Posted on Jan 02, 2017
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