Question about Intermatic & Indoor/Outdoor Rain Tight Timer

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Intermatic timer for my pool pump - clock is not running

The timer clock has stopped running.
I do have power to the timer and the on/off switch works manually.

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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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1 Answer

Intermatic t101

99% chance the Timer wires are reversed ... and line from breaker and line to pump are reversed. Or remotely possibly the circuit is 240V, and somebody changed clock motor on old T101 from WG1570 to WG1573, converting old T101 into T102...
Add a comment with what you discover

If you need further help, I’m available over the phone at

May 14, 2013 | Hardware & Accessories

1 Answer

Intermatic e1010

Is this new timer installation, or older timer that stopped functioning?

1) Copy following link to help identify timer, download manual:

2) If this is new installation, then check wiring for single pole installation. This timer will not work for 3-way switching.

3) If timer worked before, and now clock motor has stopped working:
Turn power off, use compressed air to blow out timer, then see if you can spray highly flammable vapor from WD40 can into the motor.gears.

4) There are replacement trippers for this timer, but no replacement clock motors.
Buy another single-pole in-wall timer.

If you need further help, I’m available over the phone at

Dec 03, 2012 | Intermatic Hardware & Accessories

1 Answer

The timer has started stopping at the time it should switch on, as though it is stuck. It works fine if I turn it on manually and turns off at scheduled time. I am thinking it might be the timer tripper...

You can buy trippers, but problem is the timer clock motor has gone bad.
Clock modules are not sold separately.

Maybe easiest to buy cheap plug-in timer, set power pack override to ON, then plug power pack into cheap timer.

Aug 21, 2011 | Malibu ML88TL 88Watt Low Voltage Power...

1 Answer

The timer went out and the time of day no longer changes. I can manually turn the lights on by rotating the switch on top of the timer. How would I go about replacing the timer?

Question posted under Intermatic/Malibu power pack.
Timer clock modules are not sold separately for this timer.
Some people report being able to take the clock module apart, cleaning gears and re-lube with Vaseline. Mark parts carefully so re-assembly is easy.
Power packs have 1-5 year warranty.
Another work around is to buy cheap plug-in timer, set power pack to override, and then plug power pack into cheap timer.
Open following link for troubleshoot steps, trippers, links to manuals, tips for next power pack, and warranty contact info.

Aug 10, 2011 | Intermatic & Malibu& 300 Watt Power/Pack...

1 Answer

I bought a house that had an intermatic t104 running timer running the pool pump. It worked for a little while then the clock stopped turning. The manual switch still worked to turn on the pool. I...

If you only have a Black wire, White wire and a ground wire, you are only wired for 120 volts. For 240 volts you have to have two Black wires or a Black and a Red as well as a White (neutral) and a ground.

Jun 21, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

I have a new Intermatic T104 P201 timer. When the manual switch is on, the clock runs normally and is able to trip the switch to off using the trippers. once the it is tripped off, the clock stops...

I suspect the wiring to Load is reversed with wiring from circuit breaker.

Open following link for troubleshoot checklist:

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.

May 30, 2011 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

The timer works but gets "stuck" when it comes to the ON time. it will continue this cycle if i force it to click past the ON time; but when it comes around the next day it sticks again.

You posted under malibu power pack.

When clock motor gets weak, it can no longer push timer dial past the trip point switch.
Right now the clock motor is overheating and will stop functioning.
This timer does not have replacement clock motor, but comes with 5-year limited warranty.
Buy cheap plug-in timer, set power pack to override, and plug power pack into cheap timer.

For complete troubleshoot, trippers, manuals and warranty information:

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.

Apr 14, 2011 | Malibu ML900TW 900 watt Power Pack Timer...

1 Answer

Hello! I have a 59017 timer, and this is my problem: When I put the timer in Timer option, If I have all the pins in off, the timer run ok, but if I put one Pin in On mode, The timer run ok but when find...

You don't say if this is new timer installation.
Or if timer was working before and suddenly stopped working.

I also own Woods 59017 timer from Home Depot.

1) New timer installation:
Open following link to access manual and read wiring instructions.

2) Old timer that stopped working:
If timer dial does not rotate, then the timer is broken, does not have power, or is wired wrong.
If timer stalls when it gets to a pin, then the clock motor has gotten weak, and is overheated and will stop working.

3) Buy new GE 15070 timer from Home Depot for $18
4) Buy new Woods 59017 at Amazon for $11 plus shipping

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 03, 2011 | Woods Mechanical Inwall Timer 59017

1 Answer

Power is good going into the timer but the timer is not running. I am wondering if there is a fuse that needs to be changed or a reset switch? The timer has been replaced in the last year.

If I understand correctly, you have T-104 240V timer.
Timer was running fine before, and recently stopped working.
If this is not your timer, add a comment.

1) Click manual override back and forth to see if Load turns on-off.
If Load does not turn on-off, then check power at Load.
Timer has 5 terminals A 1 2 3 4
Check terminals 2 and 4 for 240Volts when Load is ON

2) Check terminals 1 and 3 for 240Volts to make sure timer has full 240V and breaker is not tripped OFF on one leg. If timer has 120V, it appears to have voltage, but clock will not rotate and Load will not turn on-off. Check breaker for 240V across both screws.

3) Is dial rotating?
If dial is not rotating or is stuck in place, replace 208-277V clock motor.

4) If dial is rotating, but trippers don't flip on-off lever, then trippers may be worn down. Buy new trippers.

5) How to wire T104 timer

How timer works
Clock motor rotates dial.
ON-OFF trippers on dial contact lever.
ON tripper pushes lever one direction.
OFF tripper pushes lever other direction.
Lever moves electrical contacts together, or pulls contacts apart.
When lever moves on-off, manual override lever also snaps back and forth with audible clicking sound.


Nov 24, 2010 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

Timer is working but stops but stops at the on and off points like it don't have enough power to engage switch, timer is less then year old.

The pins push the lever.

New T-104 comes with a bit of white grease on the lever.

The lever is connected to the manual override.
Click the manual override back and forth. It should click firm and crisp.
If the manual override is sluggish or it sticks, then timer might be bad ... buy a new T-104 and snap the new insides into the box without changing out the box ... and if you bought it at the local store, then return the new timer with the old insides.

If the manual override works crisp and clean, then the clock motor may be bad.
Clock motors and Intermatic timers run for years, but the clock gears are plastic.
You can buy a T-100 series 240Volt clock motor at WW Grainger for $16
I think you need a small star screwdriver to change clock motor

Finally, the main dial gears are steel. If timer is exposed to moisture and dirt, the gears can get rusty and that might cause dial to stall. Snap out the insides and clean out the dirt, spray a bit of WD-40. Turn off electricity because WD-40 is extremely flammable.

Up-vote if this information helped. Thanks for the feed back.

Oct 14, 2010 | Intermatic T104R 208-277Volt 40-amp Timer...

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