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INTERMATIC k1121 Can the permantly closed Intermatic k1121 be diagnosed and reruned to on/off cycling?

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The closed contacts would mean the relay is not energized or contacts welded closed. Given the relay is the only moving part, the chances are good the relay has failed. But probably a 50:50 chance other internal electronics. Possibly lightning strike which makes it not likely repairable.

Anything can be fixed but economics would prohibitive. So unless you looking for an electrical project... no.

Open it up and look for arcing and/or burnt components. Check relay coil for continuity. If relay coil is open, you might get lucky and merely replacing the relay will make it functional.

Posted on Jun 16, 2019

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6 Suggested Answers

6ya6ya

6ya staff

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SOURCE:

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: remove Intermatic 60 min. wall timer face plate only from wall

That knob should just pull straight off. Check to make sure there isn't a tiny set screw on the side, but otherwise you can pull it off and remove the cover plate.

Posted on Jan 24, 2009

Anonymous

  • 94 Answers

SOURCE: INstruction manual needed Intermatic HB800RCL

To download the file you need Acrobat reader 7 at least. I just tried it and I was able to get it. It was slow but got it. Go for it and hop this was helpful!

Posted on Aug 23, 2009

VtToolMan

Mark

  • 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

VtToolMan

Mark

  • 704 Answers

SOURCE: Intermatic Model DT 121 "LO" after programming

That is the visual indication for a "LO" battery. You need to replace the battery very soon or the timer will cease working properly.

Typically with this model of Intermatic timer, you only have about 30-40 seconds to change out the battery before the programming is erased and you'll have to re-enter your desired on/off cycles and such.

The battery is located under the manual push faceplate, just flip it down and you can either use a small flat bladed screwdriver or your fingernail to open up the battery compartment to change out the battery.

Hope you find this Very Helpful and best regards!

Posted on Sep 09, 2009

Testimonial: "Exactly on point."

Anonymous

  • 1 Answer

SOURCE: how to replace clock in intermatic timer

I need to replace the timer on a model #ML600TW

Posted on Oct 19, 2009

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1 Answer

E10694 timer


Scroll down and identify timer:
http://waterheatertimer.org/Intermatic-timers-and-manuals.html
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

E10694 is imaginary number applied to all sorts of intermatic timers sold by folks who want their timer to appear unique and rare on internet. It has been used for T101 120V timer, T104 240v timer, T170 series timer with day-skipper, and also with 'cycle' timers... except all timers with rotating dial could be called cycle timers, but 'cycle timers' are normally timers with less than 24 hour rotation period.

Gene h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Mar 24, 2014 | Intermatic Hardware & Accessories

1 Answer

Is the K1121 a two or three wire device?


Photocells are always 3-wire. The photocell switch has to be powered continuously, while power going to the load is turned on only when switch turns on.
Intermatic K1100 pages says: "three 6 in. color-coded leads"
http://www.intermatic.com/products/ec%204%20layer/photo%20controls/k1100%20k1200%20series%20relay%20type/k1100%20and%20k1200%20series%20relay%20type.aspx

Same 3-wires are required when photocell controls 120Volt or 240volt.
Open following links for some diagrams and information:
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#photo

Jul 28, 2011 | Intermatic K1121 Photo Cell Control...

1 Answer

When photcell turns off contactor vibrates and chatters. Everything rated and sized correctly


If the chattering goes on continuously until you remove power or cover the photo-cell, then your contactor (relay) is wired wrong. If that is the case, read on.... The relay is probably a double-throw relay, and it is wired in such a way that turning off the photo cell allows the relay to open, but when it opens, it closes on the other contacts, which are wired to re-energize the coil, causing it to close again. It is, in effect, bouncing off of the secondary contacts. This is exactly how buzzers and old phone ringers operate.
Good luck.

Nov 29, 2010 | Intermatic K1121 Photo Cell Control...

1 Answer

On Intermatic HB65R Timer, how do I set AM/PM or 24 Hour cycle ?


HB65 manual is not available.
Intermatic has pared-down it's timer line recently.
Some old manuals still show, but those are disappearing because timers don't last forever.
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

HB61 timer has a photo-cell switch and automatically turns ON at dusk, and then you set timer for how many hours it will operate before turning off.

Nov 23, 2010 | Hardware & Accessories

1 Answer

I have an intermatic 7 day all weather timer model HB71R.I have lost the owners manuel.Anywhere I can print one off as it has to be re-programed.


Intermatic does not show that manual.

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

They show HB77R raintight.
This model may be close enough to figure out button sequence.
I work with timers and most programming follows similar pattern.
Older timers usually follow same pattern as new timers, except with fewer options.
http://www.intermatic.com/products/timers/consumer%20outdoor%20timers/digital%20timers/hb77r.aspx

Nov 16, 2010 | Intermatic 7 Day Digital Timer Model...

1 Answer

How do you test a K1121 photocell besides covering its eye?


covering the eye is the only way that I know of to activate the internal switch. If the problem is that the light does not come on, I would double check the connection to the switch leg wire for the light. Then cover the eye, it may take few minutes before it turns the switch on...

Jan 26, 2010 | Intermatic K1121 Photo Cell Control...

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