Question about Intermatic & Indoor/Outdoor Rain Tight Timer

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I have a intermatic timer model T103 i just put in. I use it to run outdoor lights. I can manually turn off and on lights but i cant get the clock to rotate or work. I have returned it and replaced it with new. Still has same problem. wondering if i have it wired right.

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Sounds like you have Line and Load wires reversed.
Line wires come from breaker to timer.
Load wires leave timer and go to Load (light, fan, motor, pump)
Open following link to view wiring for T103
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T103

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Fixya is always less expensive than a service call.

Posted on Feb 05, 2011

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On/off tripper problem with T 103 timer


if it won't trip it, the on pin is not lining up right and u need to take it off and put it making sure it is right. if that's not it u got a bad timer

Mar 26, 2012 | Intermatic Hardware & Accessories

1 Answer

I just purchased a home that has an Intermatic T103 installed in the garage, how can I figure out want it's connected too?


T-103 is 120Volt timer that can be used to control 120Volt and/or 240Volt loads, for example pools and spas and outdoor lights.
Look at the yellow dial and see if it has trippers attached to dial.
If no trippers are on the dial, then the timer function is off.
Next look at dial and see if it rotates as time passes.
If dial does not rotate, then either the clock motor is bad or electricity to timer is off or timer is not connected to power.
Test across terminals A and 1 for 120Volts will tell if timer is getting power.
Last, move manual override back and forth and see if anything turns on and off.
Open following links for more information:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T103
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

Jun 12, 2011 | Intermatic T103 Indoor 120-Volt 40-amp...

1 Answer

I have Intermatic timer WG 1573 208/277V 60Hz 3W stamped on the case. I would like to chage this unit to a 110V timer system if possible. (In other words just be able to switch clock motors) If this is...


WG1573 is a 240 Volt clock motor for T100 series timers.
This means you have T-104 timer.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
Image shown on link above is T104R outdoor timer.
T104 indoor timer is the same except door does not have rubber gasket.
Terminals are labeled A 1 2 3 4
If this is not your timer, then add a comment.

Following instructions will convert T104 240V timer to T103 120V timer

Clock motor can be replace with identical 120V clock motor from Grainger
http://www.grainger.com/Grainger/INTERMATIC-Time-Clock-Motor-1PNK1?Pid=search

Timer mechanism snaps out and clock motor is located on back.
Remove clock motor with star screwdriver tip

Connect new clock motor wires to DIFFERENT terminals than before.
Old clock was connected to terminals 1 and 3
New 120V clock motor is connected to terminals A and 1

Wiring for 120V T103 is shown on link below.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T103
White neutral wire must connect to terminal A
Black hot wire must connect to terminal 1

Dec 19, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

The dial on the intermatic water heater timer is not rotating on it's own and is easy to turn in either direction-without pulling it out and setting the time. The unit is only 1 year old..Can I replace the...


You can replace clock motor on many Intermatic timers:
Snap mechanism loose using metal spring top inside box.
Tip mechanism out and get clock motor number off motor.
Google search specific clock motor number.

Aplus sells many clock motor:
http://www.aplussupply.com/intermatic/timermotors.htm
Electric supply online sells clock motors
http://www.electricsupplyonline.com/prod/intermatic-motors.php

Grainger carries inexpensive clock motors for T101, T103, T104 timers.
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi
T101 and T103 use 125v motor
http://www.grainger.com/Grainger/INTERMATIC-Time-Clock-Motor-1PNK1?Pid=search
T104 uses 240v motor
http://www.grainger.com/Grainger/INTERMATIC-Time-Clock-Motor-1PNK2?Pid=search

Dec 01, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

I having troble with my t103 timer to turn the lights on manualy i try to set the timer but for some reason doesn't work what can i do ???


T103 Intermatic timer has 120Volt clock motor and can control 120V or 240V Loads.
Wiring for timer is shown on following link:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T103

Troubleshoot T103:
1) Manual override is working correctly, and it snaps crisp and clean, and Load turns on-and-off.
That means timer is basically good.

2) Next look to see if yellow dial is rotating.
If dial is not rotating, then 120Volt clock motor needs to be replaced.
Take photo of wiring and mark wires before starting.
Remove two white wires connected to screw terminals 1 and A.
Snap timer mechanism out of box, clock motor is on back of timer.
Use small star screwdriver to remove old clock motor.
Reattach white wires on terminals 1 and A, tighten screws very tight.
Reset current time: lift and rotate dial until current time lines up with silver pointer.
Grainger sells 125V clock motor:
http://www.grainger.com/Grainger/INTERMATIC-Time-Clock-Motor-1PNK1?Pid=search

3) If dial is rotating, but gets stuck at certain times, or runs slow, then replace clock motor.

4) If dial is rotating, and trippers are attached to dial, but timer does not turn ON, then trippers are worn down and need to be replaced.
Grainger sells the T103 trippers
http://www.grainger.com/Grainger/INTERMATIC-Timer-Tripper-2E054?Pid=search

5) How Intermatic mechanical timers work:
Dial with ON-OFF trippers is rotated by clock motor.
Trippers on dial contact ON-OFF lever.
ON tripper pushes lever one direction.
OFF tripper pushes lever opposite direction.
Lever moves electrical contacts on back of timer that turn Load ON-OFF.
Manual override lever clicks back and forth with each ON-OFF action.

geno_3245_85.jpg

Nov 20, 2010 | Intermatic T103 Indoor 120-Volt 40-amp...

1 Answer

The timer clicked OFF but poot pump kept running. Had to trip breaker to stop pool pump.


Your Intermatic timer has a manual override.
The override is a good diagnostic.
Click the manual override and see if pump turns on and off.

Next, watch if the clock is rotating.
If the clock is rotating, the OFF tripper may be worn out and you need a new tripper

geno_3245_4.jpg

If the clock wheel is not rotating, you need a new clock motor.
If you have T104, your clock motor is 240Volts
If you have T101 or T103, your clock motor is 125Volts
Buy trippers and clock motors at Grainger
Clock motor replacement takes a small star-screwdriver bit
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi

If your manual override is not working, then the gears might be rusty and need to be cleaned or your timer needs to be replaced.
You can buy same model number timer and then swap the insides without changing boxes.

Add a comment if you need more help.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

Nov 02, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

2 Answers

Have model T103 Intermatic Timer that have been turning on the store lights for the past 20 years. Recently the timer does not turn the lights on in the morning and I have to manually flip the switch to...


Sounds like you need new ON pin
http://www.grainger.com/Grainger/INTERMATIC-Timer-Tripper-2E054?Pid=search

d3c9f33.jpg

The ON-OFF pins rotate around until they come in contact with a lever. The clock motor pushes the pin forward until it clicks the on-off lever. The pins are softer metal than the lever, so the pins wear out.

If you need a new T-103 timer some day > the new timer mechanism can snap right into the old box without changing boxes.

If the dial is not rotating, then you can replace the T100 series 125 Volt clock motor (the T103 clock motor is 125V)
http://www.grainger.com/Grainger/wwg/search.shtml?searchQuery=Wh40&op=search&Ntt=Wh40&N=0&sst=subset

Oct 12, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

Model T104P wiring instructions for 110volt motor


T104 timer is for 240 Volt circuits. It has internal 240V clock motor. Clock terminals and timer terminals are connected, so there is no way this timer can control 110V circuit.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

T101 timer is for 110V circuit.
T101 has 110V clock motor
Both white neutral wires = terminal A.
Black hot wire from breaker box = terminal 1
Black wire to load = terminal 2.
Grounds = green screw
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T103 timer is for 110V circuit
T103 has 110V clock motor
Both white neutral wires = terminal A.
Black hot wire from breaker box = terminal 3
Black hot wire to load = terminal 4
Grounds = green screw

T1905 timer is for 110V circuit.
T1905 has 110V clock motor
Both white neutrals = Clock terminal
Black hot from breaker = COM
Black to load = NO [load comes on when timer turns on]

Sep 21, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

Timer stopped running so I replace timer motor. However the timer still does not run. I can still turn pool pump on manually. Will I have to replace entire unit?


T103 clock motor is 125 volt WG1570
1) If you bought the 240V WG1573, the clock will not operate
2) If you connected the motor wires to wrong terminals, then clock will not operate.
3) If original box label says T103, but 240V T104 was installed in same box, and you bought wrong voltage motor
4) Test for 120Volts across terminals A and 1, and make sure clock motor matches voltage of timer, and clock motor wires are connected to terminals A and 1.
Open following links:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#103

Jun 26, 2010 | Intermatic T103 Indoor 120-Volt 40-amp...

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