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I just fitted a grasslin socket box timer for my oil heating the clock only works when the manual override is switched on

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  • D. E. Hev Mar 29, 2015

    Hi WILLIAM BRYANS, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
    Model Number?

    WILLIAM BRYANS Mar 30, 2015

    Can't see model number on instructions, see image.

    WILLIAM BRYANS Mar 30, 2015

    I have used mains switching diagram.



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Posted on Jan 02, 2017

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SOURCE: intermatic timer for my pool pump - clock is not running

Usually the timer motor is bad when that happens. Replacement timer motors are available from websites like this one:

Be sure to get the right voltage timer motor. Intermatic T101's and T103's use a 120 volt timer motor (Cat# WG1570) and the T104 uses a 240 volt timer motor (Cat# WG1573).

If you don't want to mess around replacing the timer motor, you can purchase a new timer, and as long as the existing enclosure is in good shape, just swap out the guts.

Posted on May 14, 2010

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SOURCE: Need user instructions for a Grasslin iht d120

Took a little hunting but managed to find it for you.
Here's the link to the manual including programming instructions.

Have a great day

Posted on Dec 29, 2010

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SOURCE: My daughter has a Baxi Combo 105e fitted with an

I have a Baxi Combi 105 HE boiler that has just been fitted and it has the optional 7 day digital timer but no instructions on how to set it does anyone know where I could get them from. Many thanks

Posted on Feb 25, 2011

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.

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For a price, expert works with you while you work on timer or any do-it-yourself project.
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Posted on Mar 04, 2011

SOURCE: need an operation manual for

Talento 371 is single channel din-rail timer.
Following manual might work
They also make the mini-371

Posted on Aug 19, 2011

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1 Answer

Grasslin Intermatic pool timer turns on and off randomly

did you change the base out or just the clock?? it could be shorting out threw the base

May 29, 2014 | Intermatic Grasslin Pool Time Clock 24hr...

1 Answer

After lighting strike my grasslin gm40 only works manually are the relays fried?

1) Something is fried. Probably the electronics if relays turn on-off with override.

2) Try moving dip switches to different voltage, and change wiring and voltage for possible work around.
For example if you are controlling 240Volt, then move dip switches to 120V and run neutral wire to timer and use one 120V hot leg from 240Volt circuit to power clock motor.

3) If timer module is not rotating, then remove module for identifying marks on back. Order new FM1 timer module.

4) There is no reset protocol for this timer, or surge protection. Timer has one year warranty against workmanship defect. There are no replacement circuit boards.

5) Buy cheaper-made GE 15207 timer at Home Depot. Then if timer goes bad, buy another timer and return defect in new box for refund. This gives timer owner unofficial extended warranty.

Feb 12, 2013 | Intermatic GM40 - 24 Hour/7-Day Dial...

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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...

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I have pressed reset on my grasslin qe1 timer and now nothing will work on it

Grasslin qe1 and qe2 manual does not show troubleshoot section.

1) Remove power to unit and see if it will reset.
2) Press reset and hold button longer
4) Timer has stopped working. I test timers, and they all stop working one day.

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.

Mar 04, 2011 | Hardware & Accessories

1 Answer

The yellow time dial has stopped turning and the auto switch cannot activate the sprinklers

If I understand correctly, the manual override does not work, and the clock dial does not turn.

It seems odd that both things would happen together. Usually the clock motor stops but the manual override still works.

Check that your timer has electricity. Check your breaker. It sounds like the electricity is off.

Does your manual override snap clean and crisp, or it it sluggish? If the manual override is sluggish, the timer mechanism may be rusted.

Snap the timer out from the box and look at the condition of the gears, and the override lever. If the timer is rusty and the manual override does not snap clean and crisp, then the timer needs to be replaced. Buy a new timer and swap out the insides without changing the box.

You might need a clock motor

Snap out the mechanism and get the number off clock

Intermatic site shows pages of clock motors: They are priced high, but cheaper than new timer.

Aplus supply sells assortment of Intermatic clock motors.

To search these pages quickly for your clock numbers, use browser Find (Click edit at top of bowser, click Find)

Intermatic has a page with manuals:
Open page, click plus next to timers and scroll down to sprinkler and irrigation timers
It's good to have the manual on hand in case the product is discontinued

Nov 09, 2010 | Intermatic R8806P101C -...

1 Answer

No power to box. TEST switch seems to be jammed as well. No breaker switches are tripped. Any help would be fantastic! Thanx!

T-104R is raintight 240V timer.

1) No power to box:
a) Test timer for voltage: test screw terminal1 and screw terminal2 to bare copper wire to see if there is some voltage. See T-104 wiring.
b) Your 240V breaker can be loose on the busbar, and not be tripped. Jiggle it a bit and see if you hear crackling. Click the breaker switch all the way over and then snap it back.
c) The 240V breaker can have one wire loose, so only 120V arrives at timer.
In this case, the timer voltage can appear dead on some terminals, or live on some terminals, but the 240V clock motor inside timer and 240V Load will not work.
d) The loss of power is one thing, but a power loss will not jam the manual override on your timer unless there was some high-voltage event like a lightning strike.

2) Test switch jammed ... that must mean manual override is jammed
Lift and rotate dial so trippers are away from on-off lever, then try manual override again. If manual override was just stuck on a tripper, you need a new T-100 series 240V clock motor. It requires a small star-screwdriver to change clock.

3) If the manual override is bad, then timer is bad. Buy a new T-104 timer mechanism and install the mechanism without changing boxes. All T-104 timer mechanisms will snap into any other T-104 box.


If this doesn't get you going, add a comment at bottom of page, and it will automatically send me an e-mail and then I will help further.

Oct 26, 2010 | Intermatic T104R 208-277Volt 40-amp Timer...

1 Answer

Grasslin timer instructions

Grasslin timers and manuals
Click timer-categories on left to see drop-down menus

Grasslin electronic time switch
Click on model number and drop-down menu shows manuals

Oct 11, 2010 | V, Inc. 12v Dc Timergeneratortransfer...

1 Answer

The off tripper pin is not turning off my timer. Why?

Does the manual override work?
If manual override does not work, then the timer is probably worn out.
Buy new T-104 (not T-101 or T-103 because these have 120V motor)
No need to replace box >>> new T-104 mechanism snaps out and fits old box

If override works then the tripper pin could be worn out.

How it works is this: The tripper pin come into contact with a metal lever, and the clock motor pushes the wheel until the tripper clicks the metal lever. The manual override is connected to same metal lever.
Tripper is softer metal and wears out before lever

Grainger sells Intermatic trippers:
f6ca61a.jpgTrippers for T-104 series

4c6036b.jpgTrippers for 15 minute time-interval timers

Oct 08, 2010 | Intermatic T104R 208-277Volt 40-amp Timer...

1 Answer

Clock does not work to turn pool filter on and off. do I need a new timer mechanism or clock motor

Things to check:

1) Is yellow dial rotating? If not, then clock motor is probably bad. T-100 240V time clock motor sells for $16 at grainger.
Also timer may not be getting 240V so check manual override.

2) If clock motor is turning, but manual override never clicks on-and-off, then pins are probably worn out. Buy pins at grainger

3) Does manual override work? Does it click crisp? If manual override clicks crisp on-and-off, and pool filter turns on-and-off normally, then a) the circuit is getting 240V and b) the timer mechanism is ok ... so clock motor is probably bad.

4) If manual override snaps crisp but pool timer does not turn on, then then circuit breaker could be bad, wire is loose, motor has gone bad
Test for 240 across poles 1 and 2
... or timer contacts are worn out & you need new T-104
See back of mechanical timer

5) If manual override is loose or sluggish, then you need new T104. You can buy a T-104, T-104R, T-104M etc ... and the interior body will snap into old box.

Note: Do not buy T-101 or T-103 as these have 120V motor.

Sep 29, 2010 | Intermatic T104M 208-277Volt 40-amp Timer...

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