Question about Intermatic Grasslin KM2ST-2D Timer, 2 Gang 24 Hour Timer with Decora Switch

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Instruction for setting Grasslin Analog timer. I've got a maual type Grasslin timer - don't know the model. How do you set the on/off switches and how do you identify AM/PM?

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Posted on Jan 02, 2017

  • 8197 Answers

SOURCE: intermatic timer T101

This link should help you set timer.

Good Luck and Please Rate FixYa!

Posted on Feb 27, 2009

  • 3600 Answers

SOURCE: timer won't turn off or on by itself

Pull the pin up wait and see if it comes on you will know then. Most do pull up but there are a few that have the pin that has to be shoved in. 90% however do have to be pulled up to set the timer for off and on.

Posted on Oct 02, 2009

Testimonial: "The problem was trying to decide if the pins up or down turned it on and off. I think I have it figured out now. UP (i think) makes it turn off & on."

SOURCE: i need instruction to set

GE 15086 manual:

Posted on Nov 24, 2010

Testimonial: "Perfect and precise. Thank you"

SOURCE: I have a HB88RC Intermatic 7 day / 7 event timer.

I have 6 Intermatic timers in my office now, and test all brands of timers for programming and wiring difficulties.
Usually I avoid questions about new timers that don't work ... because customers are dissatisfied when there's no clear solution or timer is busted.
However this sounds like Christmas emergency, so I will give my best here.

With troublesome timers:
1) I write out instructions while pushing timer buttons.
2) Work on it later
3) Pull out battery for 30 seconds to reset and reprogram until thing makes sense.
4) Some timers are simply defective.
One guy last week had HB88RC that skipped over automatic, so MODE button must have been bad.

Another guy today had 2 defective timers, which made me suspect receptacle needs line analysis.
a) Plug timer in another part of house to double check line is not interfering with timer electronics.

b) HB88RC programming steps are straightforward compared with other timers.
This leads me to believe there is some small thing missed or line is bad, or timer is defective.

Here are trip-up points that might apply to you.

c) I suggest take battery out for 30 seconds and start over.

d) Current day has to be set.
Hold clock button down while setting current day-hour-minute.
Current time displays when timer is operable, and keeps time when set.

e) When programming, each event requires ON time and OFF time.
You understand this concept.
For example event1 ON has to be set and then event1 OFF has to be set.
Then set event2 ON and then event2 OFF.

Press program button until 1 ON displays. Press day button until all-days show > Hour 4pm > MIN :30
Press program button until 1 OFF displays. Press day button until all-days show > Hour 11pm > MIN :30

d) When programming is complete, press Clock button. Current time displays.
Press MODE button to set to automatic.

e) When programming, check screen carefully to make sure 1ON appears, and then 1OFF appears in screen exactly like Fig1 and Fig3.

f) Each ON time requires OFF time for same choice of days. For example ON Tuesday and OFF All-days-of-week will not work correctly.

g) ON 7pm Tuesday and OFF 7pm Tuesday will not work.

h) Conflicts in programming cause some timers to skip programming: For example event1 says ON
7 pm Tuesday and OFF 9pm Tuesday, but event2 says opposite. This is why I suggest resetting timer.

i) Does manual override work correctly? Press MODE button until ON-OFF shows. Are lights burned out? If MODE button does not override timer and turn Load on-and-off, then I suspect timer is busted. Plug in different type of light and try MODE button again.

j) Plug another type of light into timer, for example table lamp. Christmas lights are incandescent or LED. Timer manual does not include or exclude LED or CFL bulbs. Some timers work with specific types of Loads, but this timer manual doesn't exclude certain Loads.

EZ manual at Intermatic:
Full manual:

Posted on Dec 03, 2010

SOURCE: instruction manual G1921 Grasslin Digital Timer

I don't have a manual for Grasslin G1921 timer.
You posted under photo of GE15079 which coincidentally has same buttons, but may or may not have same programming
Open following link to identify timer similarities.

GE 15079 manual:

Add a comment and say if these timers are both programmable with same instructions.

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

Posted on Mar 04, 2011

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1 Answer

How do I set the timer on my betacom 24c

Copy following link for setting analog timers by experimenting with features:

2) Betacom timer is ordinary 24-hour grasslin analog timer, with moveable trippers located around outer edge of dial, and 3-position switch.

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1) Ariston 999599 is ordinary 24-hour FM1 analog timer from Grasslin.

2) The timer dial rotates around each 24 hours, and pins are pushed outward or inward to set on-off times, and are dependent on wiring and position of override switch located on front tof timer dial.
Copy following link for setting analog timers.

3) After opening links above, add comment and attach photo of your timer.

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L have a Grasslin T35/16 without thr manual want to know how to programm it or use it

Grasslin T35 appears to be ordinary 24-hour analog timer.
Copy following link for instructions by experimenting with timer features

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1 Answer

I do not know how to set it. i have lost the instructions for a 111woods model tn300

Woods timers sometimes have more than one number for same timer.
This is true for most brands of timer.
Companies change model numbers and add new model numbers.

Intermatic makes two different analog timers with 111 model number. TN111 and HB111.
Grasslin has older electronic timer Tactic 111
Timex sells TE111 timer.

Open following link to identify TN300 analog timer and read instructions and download possible manual:
If TN300 is not same as your timer, view images on link and then add a comment for possible help with different timer.

Open following link for instructions how to set analog timers.

Sep 02, 2011 | Woods 2C 24 Hour Indoor Mechanical Timer...

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I installed the GE Basic Timer 15070 ok. I set on and off times followint the insdtructions several times. The time will tunr the light on at the set on time but it never turns the light off at the set off...

Something doesn't sound right.
I have two of these timers and cannot figure out what your timer is doing, unless wiring is wrong or timer is defective, or you connected timer to 3-way switch.

15070 is single pole analog timer that requires neutral wire.
Slide switch is set to 'Timer' for automatic timer functions.

Open following links to identify timer and see wiring and how to set analog timers:

Aug 03, 2011 | Intermatic Grasslin KM2ST-2D Timer, 2 Gang...

1 Answer

The clock dial on my grasslin analog timer does not correspond to the time on the "2:00" arrow. how do i realign the clock dial to be in line with the arrow?

I don't know what the 2:00 o'clock arrow is.
KM series Arrowhead is located to right side of timer dial.
To set clock, manually rotate timer dial clockwise until current time lines up with arrowhead

If this is not your timer, then add a comment with description of timer for possible help

Jul 23, 2011 | Intermatic Grasslin KM2ST-2D Timer, 2 Gang...

1 Answer

How to set my grasslin pool time trying to understand to let it run in day and shut off at nite about 6pm so i need to set it that way with the pin

Open following link for setting Intermatic/Grasslin FM1 timer setting instructions:
To set the 24-hour analog timer, you need to move 4 consecutive tripper pins for each hour of run time.
So for 6 am to 6 pm, 48 trippers pins will be moved outward and 48 inward.

Open following link for Intermatic FM1 series and PB series modular timers with wiring, manuals, model numbers and instructions for setting.

Add a comment for more help

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jun 08, 2011 | Intermatic FM1STUZH-120U - 24 Hour...

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